Commit Graph

3819 Commits

Author SHA1 Message Date
Ingo Weinhold
8ccbb7815c * Moved the vnode structure (to by Vnode class at some time in the future) into
its own header/source files.
* Changed vnode's bit fields to a single, atomically changeable int32 using
  flags instead. Added respective accessor methods.
* Added a per-vnode mutex-like lock, which uses 2 bits of the structure and
  32 global "buckets" which are used for waiter lists for the vnode locks.
* Reorganized the VFS locking a bit:
  Renamed sVnodeMutex to sVnodeLock and made it an r/w lock. In most situations
  it is now only read-locked to reduce its contention. The per-vnode locks guard
  the fields of the vnode structure and the newly introduced sUnusedVnodesLock
  has taken over the job to guard the unused vnodes list.

The main intent of the changes was to reduce the contention of the sVnodeMutex,
which was partially successful. In my standard -j8 Haiku image build test the
new sUnusedVnodesLock took over about a fourth of the former sVnodeMutex
contention, but the sVnodeLock and the vnode locks have virtually no contention
to speak of, now. A lot of contention migrated to the unrelated "pages" mutex
(another bottleneck). The overall build time dropped about 10 %.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34865 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 23:27:41 +00:00
Stephan Aßmus
5c9bd9d619 Patch by Andreas Faerber with small changes by myself:
* Skip mappings to non-physical memory in the PPC MMU code. Gets the
   PPC kernel booting a little further.

Thanks! Fixes ticket #5193.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34863 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 18:40:07 +00:00
Stephan Aßmus
8d9e8ba5b7 Patch by Andreas Faerber (small changes by myself):
* Fix compilation with tracing enabled.

Thanks! Fixes ticket #5183.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34862 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 18:34:42 +00:00
Stephan Aßmus
6e95b86e15 Patch by Andreas Faerber:
* Fix compilation when commented out.

Thanks! Fixes ticket #5192.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34861 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 18:31:24 +00:00
Stephan Aßmus
e355ce92a4 Patch by Andreas Faerber:
* Fix compilation with tracing enabled.

Thanks! Fixes ticket #5188.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34860 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 18:26:43 +00:00
Stephan Aßmus
5d80127809 Patch by Andreas Faerber:
* Fix a typo in the comments: unintialized -> uninitialized.

Thanks a lot!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34857 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:21:09 +00:00
Stephan Aßmus
745b2d9db7 Patch by Andreas Faerber:
* Fix duplicate assignment which is probably a merging artifact.

This patch was also a requirement for a working PPC KDL prompt. I didn't
apply the patches in order... Thanks a lot!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34856 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:19:05 +00:00
Stephan Aßmus
16f50e3394 Patch by Andreas Faerber:
* Fix a warning in VM tracing output, which prevented the compilation since
   warnings are treated as errors.

Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34855 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:13:21 +00:00
Stephan Aßmus
352455f269 Patch by Andreas Faerber:
* The kernel's _start entry function expects now a second argument, the
   current CPU index. The PPC boot loader didn't initialize GPR4, passing
   its second argument, the kernel entry address, as CPU index, causing
   smp_cpu_rendezvous() to loop forever. This fix gets the PPC boot to a
   kernel debug prompt. The CPU index is currently fixed to 0.

Thanks a lot!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34854 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:09:09 +00:00
Stephan Aßmus
50028fc7aa Patch by Andreas Faerber:
* Choosing Reboot from the menu will now reboot the system instead of
   returning to the OpenFirmware prompt. Places, where returning to the
   prompt was desirable have been adapted to maintain their current behavior.

Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34852 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:04:37 +00:00
Stephan Aßmus
9592b510c5 Patch by Andreas Faerber:
* Fixed typo in panic() message.

Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34851 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 10:00:53 +00:00
Stephan Aßmus
431b9a3183 Patch by Andreas Faerber: (OpenFirmware network boot)
* If retrieving an IP address from the non-standard /chosen/dhcp-response
   fails, try to parse it from /options/default-client-ip instead.

Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34850 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-02 09:38:53 +00:00
Ingo Weinhold
fb5c39cb6d Removed TODO again. I tried a similar event mechanism as used for busy pages
in VMCache, but, if anything, that makes a -j8 build marginally slower. I
guess busy vnodes are encountered so rarely that the additional overhead for
a more intelligent algorithm isn't really worth it. Reduced the wait time,
though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34845 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 22:13:13 +00:00
Colin Günther
ac20a24e6f Adding strndup.cpp to kernel_lib_posix. Introduced for having a safe way
duplicating firmware names in firmware_get() of the freebsd compat layer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34844 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 22:05:45 +00:00
Ingo Weinhold
f42efbcd26 Moved the entry cache implementation into its own file.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34843 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 20:51:30 +00:00
Ingo Weinhold
7a9b8baa54 Made vnode::type private, renamed it to fType, and added accessor methods. It
stores the value right-shifted by 12 bits, now, since those bits are not
relevant. This saves some bits and also resolves a TODO.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34842 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 20:43:20 +00:00
Ingo Weinhold
3caec2871a * Resolved TODO in free_vnode(): There was a race condition between vnode
destruction and VMVnodeCache::AcquireUnreferencedStoreRef(). Solved by
  adding a flag to VMVnodeCache and letting AcquireUnreferencedStoreRef()
  fail, if set.
* Added TODO regarding replacing the snooze() waiting for busy vnodes.
* get_vnode(): Unlock sVnodeMutex while calling the put_vnode() hook on
  error.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34841 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 20:20:11 +00:00
Axel Dörfler
a7cc5352d8 * Our userland build obviously adds some default headers with GCC2 - why would
it do that? This fixes the kernel build, and probably GCC4, too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34840 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 19:36:01 +00:00
Axel Dörfler
31e49a2f1d * Implemented missing alphasort(), and scandir() POSIX functions. Completely
untested yet, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34838 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 18:49:55 +00:00
Ingo Weinhold
355dc6bef4 Inlined several VMCache methods.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34837 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 17:09:23 +00:00
Ingo Weinhold
1021fd2826 * agp_gart(): Use vm_page_[un]reserve_pages().
* Removed unused vm_page_allocate_pages().
* Removed now unused (always true) "reserved" parameter from
  vm_page_allocate_page().
* Removed unused (always false) "stealActive" parameter from steal_page().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34836 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 16:37:14 +00:00
Axel Dörfler
e30dd2c076 * If the VESA driver remaps the frame buffer on init, it will now also make
sure that the kernel's frame buffer console points to the right data.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34835 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 14:54:41 +00:00
Ingo Weinhold
4502d80d7e capture_tracing_stack_trace():
* When interrupts are disabled, it is still safe to capture the kernel stack
  trace. The respective TODO preceded the introduction of the "kernelOnly"
  flag.
* Actually made "kernelOnly" work. The wrong flag was passed to
  arch_debug_get_stack_trace() in case it was false, so we never captured
  user stack traces.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34832 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-31 17:21:17 +00:00
Ingo Weinhold
91bd177eb1 Replaced the rootfs mutex by an rw_lock. To avoid race conditions in the
directory iteration code, a mutex to protect the iteration cookie and one
to protect the cookie list have been introduced.
Overall this reduces the contention of the rootfs lock significantly. The
Haiku image -j8 build gets only marginally faster though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34831 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-31 17:11:52 +00:00
Ingo Weinhold
2ea2527fe4 R/W lock implementation:
* Changed the rw_lock_{read,write}_unlock() return values to void. They
  returned a value != B_OK only in case of user error and no-one checked them
  anyway.
* Optimized rw_lock_read_[un]lock(). They are inline now and as long as
  there's no contending write locker, they will only perform an atomic_add().
* Changed the semantics of nested locking after acquiring a write lock: Read
  and write locks are counted separately, so read locks no longer implicitly
  become write locks. This does e.g. make degrading a write lock to a read
  lock by way of read_lock + write_unlock (as used in the VM) actually work.

These changes speed up the -j8 Haiku image build on my machine by a few
percent, but more interestingly they reduce the total kernel time by 25 %.
Apparently we get more contention on other locks, now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34830 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-31 17:03:41 +00:00
Ingo Weinhold
3ce2634533 * Fixed the semantics of [v]snprintf(): If the buffer is not large enough,
the function shall nevertheless return the length of the string that would
  be written, if the buffer were large enough.
  Added a touch of C++ while doing that. :-)
* Fixed the instances in boot loader, kernel, and kernel modules where the
  wrong semantics were expected. The majority of uses actually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34826 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-30 15:17:09 +00:00
Ingo Weinhold
3069ca963e Enable loading debug symbols again. The approach to use the driver settings
is broken.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34825 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-30 14:55:07 +00:00
Ingo Weinhold
448671a39c * Build library libroot_debug.so, which is the standard libroot.so with the
debug heap implementation.
* Added libroot_debug.so to the DevelopmentMin optional package. Since it has
  the same soname as the standard libroot, it can simply be specified in
  LD_PRELOAD to run a program with that version.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34788 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-28 00:13:17 +00:00
Ingo Weinhold
765a039de2 Pre-load shared objects as libraries, so their symbols will be used
automatically and a pre-loaded library will not be loaded again, when it's
also a dependency.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34786 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-28 00:05:10 +00:00
Ingo Weinhold
9704a425ea When pre-loading stuff, we must not access gProgramImage unchecked.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34785 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-28 00:02:54 +00:00
Ingo Weinhold
eb8dc1ebfb * Removed DEBUG_PAGE_CACHE_TRANSITIONS debugging.
* Added VMCache::MovePage() and MoveAllPages() to move pages between caches.
* VMAnonymousCache:
  - _MergeSwapPages(): Avoid doing anything, if neither cache has swapped out
    pages.
  - _MergeSwapPages() does now also remove source cache pages that are
    shadowed by consumer swap pages. This allows us to call _MergeSwapPages()
    before _MergePagesSmallerSource(), save the swap page shadowing check
    there and get rid of the vm_page::merge_swap flag. This is an
    optimization based on the assumption that usually none or only few pages
    are swapped out, so we save a lot of checks.
  - Implemented _MergePagesSmallerConsumer() as an alternative to
    _MergePagesSmallerSource(). The former is used when the source cache has
    more pages than the consumer cache. It iterates over the consumer cache's
    pages, moves them to the source and finally moves all pages back to the
    consumer. The final move is relatively cheap (though unfortunately we
    still have to update all pages' vm_page::cache field), so that overall we
    save iterations of the main loop with the more expensive checks.

The optimizations particularly improve the common fork()+exec*() situations.
fork() uses CoW, which is implemented by putting two new empty caches between
the to be copied area and its cache. exec*() destroys one copy of the area,
its cache and thus causes merging of the other new cache with the old cache.
Since this usually happens in a very short time, the old cache does still
contain many pages and the new cache only few. Previously the many pages were
all checked and moved individually. Now we do that for the few pages instead.

A very extreme example of this situation is the Haiku image build. jam has a
huge heap (> 200 MB) and it fork()s+exec*()s for every action to be executed.
Since during the cache merging the cache is locked, any write access to a
heap page causes jam to block until the cache merging is done. Formerly that
took so long that it killed a lot of parallelism in multi-job builds. That
could be observed particularly well when lots of small actions where executed
(like the Link, XRes, Mimeset, SetType, SetVersion combos when building
executables/libraries/add-ons). Those look dramatically better now.
The overall speed improvement for a -j8 image build on my machine is only
about 15%, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34784 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-27 16:14:13 +00:00
Ingo Weinhold
c2d5972b6a Moved merging swap pages from Merge() to a separate method.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34779 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-26 21:05:38 +00:00
Ingo Weinhold
4566a632c6 * Some style cleanup.
* Pulled the code moving the pages out of Merge() into a separate method.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34778 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-26 21:00:02 +00:00
Ingo Weinhold
ade3a199a6 Already assigned the IOScheduler's ID in the constructor and use it in the
names of its threads.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34770 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-25 11:46:15 +00:00
Ingo Weinhold
e0578cf89f Copy and paste left-over. Should fix the m68k build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34752 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-22 22:01:55 +00:00
Ingo Weinhold
2e74d74f4f * Added method VMCache::TransferAreas() moving areas from one cache to
another. The code originates from vm_copy_on_write_area(). We now generate
  the VM cache tracing entries, though.
* count_writable_areas() -> VMCache::CountWritableAreas()
* Added debugger command "cache_stack" which is enabled when VM cache tracing
  is enabled. It prints the source caches of a given cache or area at the
  time of a specified tracing entry.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34751 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-22 22:00:35 +00:00
Ingo Weinhold
a38f850360 * arch_debug_get_stack_trace():
- Replaced the "userOnly" parameter by a "flags" parameter, that allows to
    specify kernel and userland stack traces individually.
  - x86, m68k: Don't always skip the first frame as that prevents the caller
    from being able to record its own address.
* capture_tracing_stack_trace(): Replaced the "userOnly" parameter by
  "kernelOnly", since one is probably always interested in the kernel stack
  trace, but might not want the userland stack trace.
* Added stack trace support for VM cache kernel tracing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34742 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-22 15:15:07 +00:00
Ingo Weinhold
1c12dcb598 IOSchedulerRoster:
* Lock the notification service and check HasListeners(), so we don't prepare
  an event message needlessly.
* The on-stack buffer for the event message was too small for I/O operation
  related events. Now a larger buffer belonging to the roster object is used.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34737 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-21 21:00:21 +00:00
Ingo Weinhold
1fde952c1d DefaultNotificationService:
* Added Lock()/Unlock() for explicit locking by a service user.
* Added NotifyLocked() and made Notify() inline.
* Added HasListeners() so one can check whether there is a listener at all
  before preparing the event message.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34736 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-21 20:56:50 +00:00
Ingo Weinhold
0b58d8440c * Prefixed the INCLUDE_GPL_ADDONS variable by "HAIKU_". configure needs to
be run again or generated/build/BuildConfig needs to be adjusted manually.
* Removed bochs debug hack.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-20 13:55:45 +00:00
Ingo Weinhold
022cdb9ce3 Fixed build with scheduler tracing enabled.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34714 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-20 00:32:08 +00:00
Ingo Weinhold
a73382f7bb * uninit_port_locked(): Fixed incorrect use of ConditionVariable::NotifyAll().
Fixes #5152.
* _get_port_message_info_etc(): Check whether the port still exists and is not
  closed and empty in the loop. Though actually it shouldn't be necessary
  (same in the other functions), since Wait() would return an error, if the
  port was closed/deleted. Well, paranoia... :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34713 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-20 00:31:37 +00:00
Ingo Weinhold
7382f82116 Should have been part of an earlier commit: Initialize the IOSchedulerRoster.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34705 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-19 14:35:05 +00:00
Ingo Weinhold
f36ea5de1b Should have been part of the previous commit: Include directory for the I/O
scheduling event support.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34704 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-19 14:34:24 +00:00
Ingo Weinhold
189010cbc2 Added support for I/O scheduling events to the system profiler interface.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34703 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-19 14:33:29 +00:00
Ingo Weinhold
ca77afe75f * Implemented missing cleanup when an IOScheduler is destroyed. The threads
weren't terminated orderly.
* IOScheduler now stores its name and gets a unique ID.
* Added IOSchedulerRoster singleton which registers all IOSchedulers. It also
  provides a notification service. We generate interesting events for
  IOSchedulers, IORequests, and IOOperations.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34702 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-19 14:32:14 +00:00
Ingo Weinhold
410ba11f8c read_port_etc():
* Also check whether the port is closed after waiting.
* Don't increment read_count after waiting failed. That should have been the
  cause of #5119.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34687 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-17 12:21:05 +00:00
Ingo Weinhold
c3bc71d6e2 Removed superfluous ConditionVariableEntry::WaitStatus() checks. Wait() always
returns the correct value.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34686 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-17 11:06:16 +00:00
Ingo Weinhold
3ffeff0770 port_writev_etc(): Missing check whether the port has been closed after
waiting.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34685 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-17 10:51:05 +00:00
Axel Dörfler
7d592ec4d2 * Fixed the bug that led to #5119. There was a race condition in the read path
as soon as a second thread got into the game: if a thread was notified that
  a message is ready, another thread could call read_port() and steal it before
  the previous thread could claim it. The "Extensions" menu still doesn't seem
  to work, but I would guess that is unrelated.
* The threads of the test app never exited, as read_port() returns the number
  of bytes it read, not just a status.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34681 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-16 12:51:26 +00:00
Fredrik Holmqvist
118fa8936e Make sure settings isn't null. Not my finest day apparently.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34679 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-15 22:19:08 +00:00
Fredrik Holmqvist
0f6b7a8cad Unload driver settings as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34678 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-15 22:05:45 +00:00
Fredrik Holmqvist
d403ff624f Style fix:
* static variables should start with s.
 * function blocks should start on new line.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34668 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-15 17:00:03 +00:00
Fredrik Holmqvist
5e972c0f3d Implemented TODO about not loading symbols at boot.
This saves ~0.5s of boot time here, but I suspect it might be better for CD.
Enabled loadSymbols in kernel settings so the behavior should be the same as before this change.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34666 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-15 15:55:16 +00:00
Ingo Weinhold
0338371f26 * All scheduler implementations:
- enqueue_in_run_queue() no longer returns whether rescheduling is supposed
    to happen. Instead is sets cpu_ent::invoke_scheduler on the current CPU.
  - reschedule() does now handle cpu_ent::invoke_scheduler_if_idle(). No need
    to let all callers do that.
* thread_unblock[_locked]() no longer return whether rescheduling is supposed
  to happen.
* Got rid of the B_INVOKE_SCHEDULER handling. The interrupt hooks really
  can't know, when it makes sense to reschedule or not.
* Introduced scheduler_reschedule_if_necessary[_locked]() functions for
  checking+invoking the scheduler.
* Some semaphore functions (e.g. delete_sem()) invoke the scheduler now, if
  they wake up anything with greater priority.
  I've also tried to add scheduler invocations in the condition variable and
  mutex/rw_lock code, but that actually has a negative impact on performance,
  probably because it causes too much ping-ponging between threads when
  multiple locking primitives are involved.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34657 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-13 21:18:27 +00:00
Ingo Weinhold
89e87505cf Improved panic() message.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34656 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-13 21:03:48 +00:00
Ingo Weinhold
2f7eb9b546 Fixed a stupid race condition between IORequest finishing and
IORequest::Wait(). Wait() immediately returned when IsFinished() returned
true, but this is the case as soon as the last IOOperation has finished. The
I/O scheduler is not done with the request at this point, though, since it
will still be sitting in at least one of three doubly linked lists. Since the
usual procedure to issue synchronous I/O requests is to create an IORequest
on the stack, pass it to the I/O scheduler, and Wait() on it, Wait()
returning early might cause the IORequest object to be destroyed while it is
still in use, leading to invalid memory access in the I/O scheduler,
corruption of its list structures, as well as later corruption of the issuing
thread's stack.
Related tickets:
* #4431: The request issuing thread returned and already deleted the area the
  request was writing to before NotifyFinished() was called.
* #3048, #4883: Caused by the on stack IORequest being overwritten with other
  data while being handled by the I/O scheduler thread.
* #4517: Hard to say, but I've seen a such a problem too, after a thread
  scheduling related change. An explanation would be a list structure
  corruption in the I/O scheduler causing an infinite loop with disabled
  interrupts.
* #2845, #3428, #3429: The block notifier/writer is I/O heavy and as such
  quite likely to run into the stack corruption issue.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34655 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-13 19:28:33 +00:00
Jérôme Duval
d0c1951713 added fmin, fma, fmax from glibc (ticket #5114).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34652 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-13 14:22:13 +00:00
Axel Dörfler
a195cce7b5 * Added a bit more missing info about user_threads.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34647 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-12 19:08:04 +00:00
Axel Dörfler
adf9b14ed6 * Applied r34634 to the simple SMP scheduler as well (Rene was right, I just
overlooked it).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34641 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-12 15:02:30 +00:00
Rene Gollent
5c7993bfab Small cleanup: As the cpu_ent struct now tracks the running thread directly, the affine scheduler can use that instead of keeping track internally.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34638 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-12 00:01:33 +00:00
Ingo Weinhold
e36d79e9dc CPU selection in enqueue_in_run_queue():
* Moved the CPU selection conde into a separate function.
* Re-added the support for disabling CPUs, which I accidentally removed.
* Got rid of idle CPU tracking. We don't need it anymore -- we iterate
  through all CPUs and check the priority of the running thread.
* Added a kind of round-robin component to the CPU selection loop, so that
  we pick CPUs more evenly. And indeed, the ProcessController display is
  less skewed, now. There doesn't seem to be a measurable performance gain,
  though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34637 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-11 23:28:28 +00:00
Ingo Weinhold
b4be7c9021 * Added cpu_ent::running_thread which is maintained by the schedulers.
* simple_smp scheduler: Rewrote the interesting part of
  enqueue_in_run_queue(). It always selects a target CPU for the inserted
  thread, now. If no CPU is idle, the CPU running the thread with the lowest
  priority is chosen. If the thread running on the target CPU has a lower
  priority than the inserted one, it will be asked to reschedule. If that's
  the current CPU, we'll return the correct value (wasn't done before at
  all).
  These changes help reducing latencies. On my machine in an idle system
  playing music DebugAnalyzer shows maximum latencies of about 1 us. I still
  find that a bit much, but it's several orders of magnitude better than
  before. The -j8 Haiku image build time dropped about 10%.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34635 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-11 19:06:57 +00:00
Axel Dörfler
edc69377fa * Changed the simple scheduler's next thread selection in the same way as the
affine scheduler to avoid possible latency issues.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34634 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-11 17:40:15 +00:00
Ingo Weinhold
ec1dcae8cd We have to use dprintf_no_syslog() in the scheduler, as all code is executed
with the threads spinlock held.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34629 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-11 10:25:56 +00:00
Ingo Weinhold
3533b6597d * Reintroduced the SMP_MSG_RESCHEDULE_IF_IDLE ICI message. This time
implemented by means of an additional member in cpu_ent.
* Removed thread::keep_scheduled and the related functions. The feature
  wasn't used yet and wouldn't have worked as implemented anyway.
* Resurrected an older, SMP aware version of our simple scheduler and made it
  the default instead of the affine scheduler. The latter is in no state to
  be used yet. It causes enormous latencies (I've seen up to 0.1s) even when
  six or seven CPUs were idle at the same time, totally killing parallelism.
  That's also the reason why a -j8 build was slower than a -j2. This is no
  longer the case. On my machine the -j2 build takes about 10% less time now
  and the -j8 build saves another 20%. The latter is not particularly
  impressive (compared with Linux), but that seems to be due to lock
  contention.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34615 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-10 11:54:38 +00:00
Ingo Weinhold
10b4833178 When any of the executed timer hooks return B_INVOKE_SCHEDULER, let
timer_interrupt() return B_INVOKE_SCHEDULER. The scheduler itself uses a
timer hook and relies on scheduler_reschedule() to be called. Will make this
even more reliable in the next commit.
This might fix #3535.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34614 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-10 11:29:38 +00:00
Axel Dörfler
2388f50c53 * The io_handler::handled_count was increased unconditionally, but in some cases
not at all.
* Tried to improve the readability of the "ints" command output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34613 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-10 11:14:46 +00:00
Axel Dörfler
33c82a30c0 * While reading in a block, the block is now marked busy, and the cache
unlocked, allowing for more parallel access.
* Writing is still done synchronously, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34611 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-10 10:29:37 +00:00
Axel Dörfler
1339ccf411 * Enforce that the caller of transfer_area() owns the area - this fixes some
mean crashes with the media_server version I just checked in.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34556 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-08 15:28:44 +00:00
Ingo Weinhold
d8d4b902cb * The system profiler scheduling event structures sport nanotime_ts now.
* Adjusted the DebugAnalyzer to handle nanosecond times.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34546 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 22:56:29 +00:00
Ingo Weinhold
b2a2d5c065 The usual files forgotten to commit. The generic system_time_nsecs()
implementation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34545 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 22:53:53 +00:00
Ingo Weinhold
34a48c70ef Added type nanotime_t (an int64 storing a nanoseconds value) and function
system_time_nsecs(), returning the system time in nanoseconds. The function
is only really implemented for x86. For the other architectures
system_time() * 1000 is returned.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34543 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 21:43:19 +00:00
Ingo Weinhold
db905187d5 Implemented a class uint128 with the basic arithmetic operations and
replaced the previous, somewhat complicated and inexact method of
computing the TSC conversion factor using it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34542 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 21:37:56 +00:00
Ingo Weinhold
522c2f19d4 * Added a simple mechanism to wait for events to VMCache. WaitForPageEvents()
waits for certain events on a given page, NotifyPageEvents() wakes up
  waiting threads respectively.
* Used the new feature instead of condition variables for waiting on busy
  pages. We save publishing and unpublishing of a condition variable whenever
  a page is marked busy. There's only something to do, if there's at least
  one thread waiting in the list of the respective cache. The general
  assumption is that this is only rarely the case and even if it happens,
  there should be only very few threads.
* Added an apparently missing notification in cache_io(). At least I didn't
  see the reason for it not being there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34537 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 15:42:08 +00:00
Ingo Weinhold
be7328a9f6 Moved VMCache related definitions to <vm/VMCache.h>.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34535 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 14:14:21 +00:00
Ingo Weinhold
bcfdfff497 Added 64 bit TODO. We'll probably have to change the interface (cookie type)
of get_next_area_info() and others.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34533 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 12:26:26 +00:00
Ingo Weinhold
40cd019ea0 * Renamed VMAddressSpace::ResizeArea{Head,Tail}() to ShrinkArea{Head,Tail}()
to clarify that they never enlarge the area.
* Reimplemented VMKernelAddressSpace. It is somewhat inspired by Bonwick's
  vmem resource allocator (though we have different requirements):
  - We consider the complete address space to be divided into contiguous
    ranges of type free, reserved, or area, each range being represented by
    a VMKernelAddressRange object.
  - The range objects are managed in an AVL tree and a doubly linked list
    (the latter only for faster iteration) sorted by address. This provides
    O(log(n)) lookup, insertion and removal.
  - For each power of two size we maintain a list of free ranges of at least
    that size. Thus for the most common case of B_ANY*_ADDRESS area
    allocation, we find a free range in constant time (the rest of the
    processing being O(log(n))) with a rather good fit. This should also
    help avoiding address space fragmentation.
  While the new implementation should be faster, particularly with an
  increasing number of areas, I couldn't measure any difference in the -j2
  haiku build. From a cursory test the -j8 build hasn't tangibly benefitted
  either.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34528 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 17:18:04 +00:00
Ingo Weinhold
fe30b74fde Fix for stack traces in the early boot process: The thread might not have
its stack top/bottom assigned yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34527 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 16:01:21 +00:00
Ingo Weinhold
a54549a8cd * AVLTree:
- Renamed to AVLTreeBase and moved it into its own header/source file.
  - Renamed FindClose() to FindClosest().
  - Added CheckTree() method for debugging purposes. It checks the validity
    of the tree.
* Added a templatized class AVLTree which doesn't offer a map-like interface
  like AVLTreeMap, but rather one similar to BOpenHashMap and SplayTree. It
  is more convenient to use, if one wants to store objects that already
  contain the key.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34526 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 15:59:37 +00:00
Ingo Weinhold
08d9b6d462 Obvious copy and paste left-over. Totally missed it as I've been testing
the wrong image for quite a while. :-/


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34494 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 21:32:00 +00:00
Ingo Weinhold
2c1886aeae * Added VMArea subclasses VM{Kernel,User}Area and moved the address space list
link to them.
* VM{Kernel,User}AddressSpace manage the respective VMArea subclass now, and
  VMAddressSpace has grown factory methods {Create,Delete}Area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34493 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 17:07:16 +00:00
Ingo Weinhold
e2518ddbb1 Made VMAddressSpace an abstract base class and moved the area management into
new derived classes VM{Kernel,User}AddressSpace. Currently those are
identical, but that will change.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34492 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 14:45:08 +00:00
Ingo Weinhold
38a97b2c36 Moved all knowledge of reserved areas from vm.cpp to VMAddressSpace. It's a
pure address space feature, so it should be handled there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34491 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 13:33:25 +00:00
Ingo Weinhold
f69032f22b * Added VMAddressSpace::ResizeArea{Head,Tail}() to adjust an area's base
and size.
* Made VMArea::Set{Base,Size}() private and made VMAddressSpace a friend.
  In vm.cpp the new VMAddressSpace::ResizeArea{Head,Tail}() are used
  instead.
Finally all address space changes happen in VMAddressSpace only. *phew*
Now it's ready to be thoroughly butchered. :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34467 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 15:21:18 +00:00
Ingo Weinhold
bbd97b4bb4 Made the VMArea fields base and size private and added accessors instead.
This makes it more explicit where the fields are modified.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34464 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 14:18:24 +00:00
Colin Günther
af983c175d Coding style cleanups. Thanks axeld.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34462 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 13:05:39 +00:00
Ingo Weinhold
35d940014e * Changed the address space area list to doubly linked. The reason is to
simplify migration of the area management, but as a side effect, it also
  makes area deletion O(1) (instead of O(n), n == number of areas in the
  address space).
* Moved more area management functionality from vm.cpp to VMAddressSpace and
  VMArea structure creation to VMArea. Made the list and list link members
  itself private.
* VMAddressSpace tracks its amount of free space, now. This also replaces
  the previous mechanism to do that only for the kernel address space. It
  was broken anyway, since delete_area() subtracted the area size instead of
  adding it.
* vm_free_unused_boot_loader_range():
  - lastEnd could be set to a value < start, which could cause memory
    outside of the given range to be unmapped. Haven't checked whether this
    could happen in practice -- if so, it would be seriously unhealthy.
  - The range between the end of the last area in the range and the end of
    the range would never be freed.
  - Fixed potential integer overflows when computing addresses.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34459 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 12:41:11 +00:00
Colin Günther
1581b764e0 * Adding static Notify{One,All} functions. This allows a cleaner implementation
of the condition variable and synchronization subsystem of the freebsd compat
  layer which will be committed next.
* Also there was a discussion about adding these functions on the commit
  mailing list. The mail in http://www.freelists.org/post/haiku-commits/r34395-in-haikutrunksrclibscompatfreebsd-network-compatsys,3
  is a good sum up of it (need to scroll somewhat down, though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34458 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 12:24:17 +00:00
Ingo Weinhold
def9898c9b Moved the three address space locker classes into a separate pair of
header/source files.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34451 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 20:16:31 +00:00
Ingo Weinhold
f34a1dd5d7 Created VMArea.{h,cpp} and moved VMArea and the global area hash table (new
class VMAreaHash) there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34450 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 19:55:59 +00:00
Ingo Weinhold
e50cf8765b * Moved the VM headers into subdirectory vm/.
* Renamed vm_cache.h/vm_address_space.h to VMCache.h/VMAddressSpace.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34449 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 18:05:10 +00:00
Axel Dörfler
939b3801ea * Add info if the B_NO_HANDLED_INFO flag is set in the "ints" KDL command.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34448 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 16:49:22 +00:00
Ingo Weinhold
90d870c155 * Moved VMAddressSpace definition to vm_address_space.h.
* "Classified" VMAddressSpace, i.e. turned the vm_address_space_*() functions
  into methods, made all attributes (but "areas") private, and added
  accessors.
* Also turned the vm.cpp functions vm_area_lookup() and
  remove_area_from_address_space() into VMAddressSpace methods. The rest of
  the area management functionality will follow soon.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34447 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 16:12:15 +00:00
Ingo Weinhold
fc7864091e Attempt at allowing to use C++ structures in C only code: We use the
CreateAsmStructOffsetsHeader mechanism to generate a header with macros
defined to the sizes of the structures we're interested in and when compiling
in C mode define the structures as "struct { char bytes[size]; }".
It works in principle, but due to how jam works, one would have to specify the
dependency to the generated header for all sources that include it directly or
indirectly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34441 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 10:56:10 +00:00
Ingo Weinhold
a477e3cf20 Finished renaming of vm_cache to VMCache.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34424 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:45:55 +00:00
Ingo Weinhold
a99eb6b56f vm_area -> VMArea
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34423 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:40:04 +00:00
Ingo Weinhold
b0db552cd9 Renamed vm_address_space to VMAddressSpace.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34422 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:27:09 +00:00
Ingo Weinhold
fe01182ce4 Accidentally reverted this change before committing: Invalid cast in C++.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34421 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:26:22 +00:00
Ingo Weinhold
bd185b4117 *.c -> *.cpp
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34417 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:06:26 +00:00
Axel Dörfler
7cab82a1c9 * Cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34415 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 16:20:41 +00:00
Axel Dörfler
943bec1287 * Made a class out of free_chunk.
* Fixed realloc() - "size" wasn't what I thought it would be.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34412 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 15:39:55 +00:00
Axel Dörfler
3c627a2751 * Reimplemented realloc() to reuse the previous buffer if possible and useful.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34409 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 14:50:33 +00:00
Ingo Weinhold
e182b46db6 Since there were no further complaints: Added mutex_lock_with_timeout().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34403 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 09:38:34 +00:00
Ingo Weinhold
f39f7a05a2 Add init_once.cpp to the build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34401 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 09:35:25 +00:00
Ingo Weinhold
840be9d6e6 Added __init_once(), an almost exact clone of pthread_once(), with the
difference that the initialization function has an additional void* argument,
so that it is suitable for initializing stuff in objects.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34400 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 09:34:58 +00:00
Axel Dörfler
be62abafab * Use a condition variable when waiting for a syscall to be done calling.
* Use C++ DoublyLinkedList class instead of the struct list.
* Note, this code is untested yet, but I will test it now (Qemu doesn't work
  on Haiku anymore for some reason) :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34382 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-30 16:10:11 +00:00
Axel Dörfler
4c3744b8d7 * Added missing license.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34372 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-30 12:37:16 +00:00
Ingo Weinhold
258b34c594 * Fixed wrong parameter of lazy_mutex_destroy().
* Split locks.cpp into mutex.cpp, recursive_lock.cpp, and rw_lock.cpp (new
  subdirectory locks/).
* runtime_loader no longer includes the rw_lock, allowing removal of the TLS
  dependency again.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34364 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-30 10:29:51 +00:00
Axel Dörfler
c598298047 * Cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34363 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-30 08:31:31 +00:00
Axel Dörfler
a4faebeb11 * Replace the FD used for fopendir() instead of closing the old one - according
to the specs, the application may still use the FD without changing its state,
  and only closedir() should finally close it.
* This fixes bug #5055.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34362 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-30 08:29:12 +00:00
Jérôme Duval
f6379d4127 added tls.o to runtimeloader. It linked successfully on x86 because of inlining.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34360 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 21:58:35 +00:00
Ingo Weinhold
ea77094b24 Replaced the hown-grown recursive lock implementation by a shared lazy
recursive lock. I haven't investigated it closer, but the previous
implementation was even broken -- "strace /bin/true" showed two
release_sem() calls, but no acquire_sem().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34342 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 11:17:53 +00:00
Ingo Weinhold
8bef23107e Added a lazy_recursive_lock implementation -- identical to recursive_lock,
just using a lazy_mutex instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34341 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 11:14:50 +00:00
Ingo Weinhold
6e06922908 Replace semaphores/benaphores in the env, fork, and user/group code by lazy
mutexes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34340 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 10:47:01 +00:00
Ingo Weinhold
937b23cb21 Added locking primitive lazy_mutex, which has essentially the same behaviour
as a mutex, but allocates its semaphore lazily. This comes at the cost of an
additional atomic_add() when the semaphore has actually to be acquired, but
saves the semaphore creation completely in single-threaded programs and in
any program when there's no lock contention.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34339 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 10:44:07 +00:00
Ingo Weinhold
f2bb2575e6 Use the shared recursive lock implementation instead of the home-grown stuff.
The shared implementation is benaphore style, saving unnecessary syscalls.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34338 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 09:57:26 +00:00
Ingo Weinhold
93b9f21335 Added recursive lock implementation (an adapted kernel version).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34337 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 09:54:58 +00:00
Ingo Weinhold
d78ffde5d1 * Some minor cleanup and improved comments.
* Fixed check in hoardSbrk(): resize_area() was invoked, even if the area was
  already large enough.
* Increased the initial heap size to 64 pages. Apparently the hoard
  implementation is rather generous and the first malloc() (caused by
  __init_heap()) already required enlarging the area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34336 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-29 09:20:58 +00:00
Axel Dörfler
dec91a9754 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34321 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 18:10:03 +00:00
Ingo Weinhold
a492466dad Created new private system header computed_asm_macros.h defining the macro we
use for the asm_offsets.cpp file, so it can be reused elsewhere.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34311 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 14:07:05 +00:00
Axel Dörfler
1db31d4dbd * The slab and the block cache now both also react on address space shortages.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34310 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 13:04:30 +00:00
Axel Dörfler
b8a73945cf * The kernel's address space is now also a resource that is known to the low
resource manager.
* Could be drastically improved, though, by taking the fragmentation into
  account.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34309 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 13:03:28 +00:00
Axel Dörfler
95235380f1 * Minor clarification.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34307 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 12:26:37 +00:00
Axel Dörfler
f4ab5d73ce * This fixes the remaining warnings in exit.c
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34294 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 17:00:09 +00:00
Axel Dörfler
52d6f78a9a * Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34292 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:58:36 +00:00
Axel Dörfler
f31ffa6b8a * Use O_CLOEXEC when open directories, attribute directories, indexes, and
queries.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34291 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:38:54 +00:00
Axel Dörfler
d82802841c * Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34290 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:33:03 +00:00
Axel Dörfler
486fffdaaf * Forgot to add linkat(), this really closes #4928 now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34289 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:30:16 +00:00
Axel Dörfler
fb2500da15 * Added missing AT_EACCESS.
* Implemented renameat(), faccessat(), fchownat(), fchmodat(), and mkfifoat().
* Added stub for mknodat().
* The kernel backend for faccessat() does not yet differentiate between
  effective and real user/group IDs, though.
* Removed B_ENABLE_INCOMPLETE_POSIX_AT_SUPPORT, as we now support everything
  (more or less). This also closes ticket #4928.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34288 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:17:17 +00:00
Axel Dörfler
7ce581d7eb * Eliminated the extra buffer in dir_vnode_to_path(); we write directly to the
specified buffer now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34282 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 14:28:55 +00:00
Axel Dörfler
00362625b9 * Added support for O_NOFOLLOW.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34279 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 14:18:23 +00:00
Axel Dörfler
432bb91f34 * dir_vnode_to_path() now uses B_* error codes instead of POSIX ones, and also
returns the correct error code if the buffer was too small (should be ERANGE
  instead of ENOBUF).
* Also, it is now independent of B_PATH_NAME_LENGTH, and therefore should
  fulfill POSIX getcwd() requirements. This should also close ticket #3352.
* Is there any reason to allocate another buffer instead of using memmove()
  at the end instead of memcpy()?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34276 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 12:46:51 +00:00
Axel Dörfler
1ba04177d3 * load_image() now has exec() semantics wrt file descriptors; before each team
would always inherit them all, causing quite a number of open files.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34247 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 16:16:22 +00:00
Axel Dörfler
3a6fc6d0aa * Improved debug output.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34246 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 16:14:52 +00:00
Axel Dörfler
40fddd06d6 * Introduced a flag to decide whether it's still okay to call a certain
syscall.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34238 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 11:50:45 +00:00
Axel Dörfler
23f179da55 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34237 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 11:48:39 +00:00
Axel Dörfler
24ce75c3d8 * Added a use counter for the syscalls, so that they are no longer removed
while a hook is called.
* This closes ticket #5027.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34233 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 09:37:31 +00:00
Axel Dörfler
5472c0c23e * The VESA driver now tries to find the PCI card that it is controlling by
checking the physical frame buffer location.
* This allows us to map the whole frame buffer at once, which means there is no
  need anymore to remap the memory on mode change.
* Also, this will ease the burden of the MTRRs, as the memory size will be
  properly aligned.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34206 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-24 15:26:52 +00:00
Ingo Weinhold
bb163c0289 * Added a set_mtrrs() hook to x86_cpu_module_info, which is supposed to set
all MTRRs at once.
* Added a respective x86_set_mtrrs() kernel function.
* x86 CPU module:
  - Implemented the new hook.
  - Prefixed most debug output with the CPU index. Otherwise it gets quite
    confusing with multiple CPUs.
  - generic_init_mtrrs(): No longer clear all MTRRs, if they are already
    enabled. This lets us benefit from the BIOS's setup until we install our
    own -- otherwise with caching disabled things are *really* slow.
* arch_vm.cpp: Completely rewrote the MTRR handling as the old one was not
  only slow (O(2^n)), but also broken (resulting in incorrect setups (e.g.
  with cachable ranges larger than requested)), and not working by design for
  certain cases (subtractive setups intersecting ranges added later).
  Now we maintain an array with the successfully set ranges. When a new range
  is added, we recompute the complete MTRR setup as we need to. The new
  algorithm analyzing the ranges has linear complexity and also handles range
  base addresses with an alignment not matching the range size (e.g. a range
  at address 0x1000 with size 0x2000) and joining of adjacent/overlapping
  ranges of the same type.

This fixes the slow graphics on my 4 GB machine (though unfortunately the
8 MTRRs aren't enough to fully cover the complete frame buffer (about 35
pixel lines remain uncachable), but that can't be helped without rounding up
the frame buffer size, for which we don't have enough information). It might
also fix #1823.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34197 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-23 15:06:08 +00:00
Ingo Weinhold
12fef51bc7 Since r33809 dprintf() acquires a mutex when called with interrupts enabled.
This is something must must not do in an idle thread or we get the scheduler
into trouble.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34196 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-23 14:19:09 +00:00
Stephan Aßmus
f89fd840a0 bonefish+stippi:
PThreads didn't have their array for the TLS values initialized.
From what we can tell, this would have been a problem for any program using
pthreads, but since all threads are pthreads now, it was much more likely to
be encountered. Like in Beam as reported in #4949 (which via libbind seems
to use some pthread stuff).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34161 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 18:08:56 +00:00
Axel Dörfler
5cea99288b * Unlock the auto locker before deleting the object or else you will find
yourself in KDL.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34158 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 16:33:09 +00:00
Ingo Weinhold
0d1fab522b * Added flag KMESSAGE_CLONE_BUFFER, which will cause buffer passed to SetTo()
to be cloned.
* Added "flags" parameter to the SetTo(const void*,...) version.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34155 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 13:52:23 +00:00
Ingo Weinhold
395fb0895f Style cleanup. No functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34152 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 11:04:12 +00:00
Ingo Weinhold
1c61ec1aad Fixed gcc 4 warning.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34151 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 11:03:27 +00:00
Ingo Weinhold
c89002c82c * Added missing include.
* Made buildable for userland.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34146 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 07:56:18 +00:00
Ingo Weinhold
9837ec16c8 Fixed spelling.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34144 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 07:10:23 +00:00
Ingo Weinhold
1748a3cb45 IOBuffer::SetVecs(): fUser was initialized incorrectly, if the vecs referred
to physical memory whose address would accidentally satisfy the
IS_USER_ADDRESS() check.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34136 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-19 16:23:22 +00:00
Ingo Weinhold
778aa3bf62 transfer_io_request_data(): There was some confusion about the isWrite
parameter and request->IsWrite(). The parameter means whether we want to
write to the request's I/O buffer (therefore renamed it to writeToRequest),
while request->IsWrite() indicates whether the request is a write request.
One can only write to a read request's buffer and vice versa.
IOBuffer::LockMemory() also wants to know whether the request is a write
request, not whether we want to write to the memory.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34135 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-19 16:19:59 +00:00
Ingo Weinhold
62b3c49b85 Added missing "static". Spotted by Axel "Eagle Eye" Doerfler. ;-)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34123 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-19 08:41:13 +00:00
Ingo Weinhold
59d51abc40 Removed obsolete uncommented function stubs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34122 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-19 07:39:47 +00:00
Ingo Weinhold
1ca0b78f54 Extended the public I/O request C API.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34121 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-19 07:38:33 +00:00
Axel Dörfler
dcf71e1cae * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34094 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 16:08:22 +00:00
Axel Dörfler
8fd850fca9 * Added "address" specifier for the "allocations" KDL command.
* Removed superfluous malloc.h include.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34093 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 16:07:58 +00:00
Axel Dörfler
931d8b07e8 * Reverted r32216 (by mmlr): it's not a good idea to access a variable on the
stack after that has just been changed, and does not contain the data one
  would assume.
* This fixes the leaking the vm_translation_map_arch_info objects, and thus
  bug #4957.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34090 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 14:56:51 +00:00
Axel Dörfler
3917e20402 * Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34089 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 14:54:32 +00:00
Ingo Weinhold
713cc7fc84 Added fs_read_attr().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34085 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 11:35:47 +00:00
Axel Dörfler
96c4511a25 * Shuffled functions around, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34083 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-17 10:23:53 +00:00
Axel Dörfler
07d4556346 * Change get_next_sem_info() to be index based, not ID based - the semaphore IDs
aren't monotonically increasing which this code was assuming. This fixes bug
  #4917.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34074 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-16 13:08:36 +00:00
François Revol
fbe3b5b994 Force C linkage on those two, fixes them being undefined after the .c to .cpp rename.
Fixes part of #4965.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34042 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-14 19:44:00 +00:00
Ingo Weinhold
6c00aabc9e Implemented POSIX.1-2008 functions unlinkat(), symlinkat(), mkdirat(),
utimensat(), and futimens().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34010 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-12 19:14:42 +00:00
Ingo Weinhold
db2b554fa3 Moved the POSIX *at() functions and AT_* macros out of the default namespace
as long as the full set hasn't been implemented. They are guarded by the
B_ENABLE_INCOMPLETE_POSIX_AT_SUPPORT macro until then. Fixes the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33990 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 17:12:03 +00:00
Ingo Weinhold
a6147679a3 Added AT_SYMLINK_[NO]FOLLOW constants and fstatat(). Fixes the findutils
gnulib build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33987 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 14:51:25 +00:00
Axel Dörfler
492dd892ce * Removed /system/etc directory.
* /etc now points to /boot/common/etc/, and the remaining contents of the former
  "etc" are put there now, as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33986 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 14:26:42 +00:00
Axel Dörfler
0491552bc3 * Moved the "fonts" directory into the "data" directory.
* Moved fonts to where they belong.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33981 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 12:30:06 +00:00
Ingo Weinhold
9c71b326c9 Fixed build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33980 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 12:20:26 +00:00
Ingo Weinhold
b189a2014e Added readlinkat().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33978 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 11:24:46 +00:00
Ingo Weinhold
fdec1a3f87 Should have been part of r33976: fcntl.c and open.c have been joined to
fcntl.cpp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33977 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 11:16:44 +00:00
Ingo Weinhold
098906f1d4 * src/system/libroot/posix: Moved open.c and fcntl.c out of the unistd
directory, where they were misplaced, and joined them to fcntl.cpp.
* Added openat().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33976 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 11:15:35 +00:00
Ingo Weinhold
9e81ddee87 * Fixed fdopendir(): We have to explicitly (re-)open the directory, because FDs
returned by open() aren't suitable for directory iteration and because checks
  have to be performed (like whether this is a directory at all and whether the
  user has read permission).
* Added __create_dir_struct() for the attribute, index, and query open
  functions to use instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33974 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 10:55:43 +00:00
Ingo Weinhold
c3dbe62619 _user_open_dir(): Allow a NULL path to be passed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33973 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-10 10:51:08 +00:00
Axel Dörfler
ecf6b86c92 * The pthread_thread structure is now allocated for all threads.
* Therefore, all pthread functions should now work fine on all threads.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33967 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-09 21:33:35 +00:00
Axel Dörfler
7249de5e61 * Changed the affine scheduler to have more or less the same characteristics
as the BeOS scheduler. This makes MediaPlayer playback much better, as high
  priority threads could lose their quantum to a worker thread twice in a row
  with 4% probability before.
* I did not yet change the simple scheduler as well yet; maybe this isn't the
  final one either.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33965 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-09 19:00:42 +00:00
Axel Dörfler
a0439d88df * Adjusted thread priorities of several system services based on a mail from
Mikhail Panasyuk: since worker threads often end up with B_NORMAL_PRIORITY,
  it might be a good idea to give system threads a higher priority.
* Minor cleanup (mostly automatic whitespace).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33961 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-09 15:25:48 +00:00
Axel Dörfler
6242fd5977 * Added the possibility to debug latency issues with spinlocks.
* When DEBUG_SPINLOCK_LATENCIES is 1, the system will panic if any spinlock is
  held longer than DEBUG_LATENCY micro seconds (currently 200). If your system
  doesn't boot anymore, a new safemode setting can disable the panic.
* Besides some problems during boot when the MTRRs are set up, 200 usecs work
  fine here if all debug output is turned off (the output stuff is definitely
  problematic, though I don't have a good idea on how to improve upon it a lot).
* Renamed the formerly BeOS compatible safemode settings to look better; there
  is no need to be compatible there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33953 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-08 20:26:48 +00:00
Axel Dörfler
bec53b590f * Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33952 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-08 20:20:27 +00:00
Axel Dörfler
01ce3f26d2 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33951 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-08 17:31:39 +00:00
Michael Lotz
8665c30ace That was not such a good destruction order in the error case. As the scheduler
accesses the scheduler data inside the thread structure, freeing it first lead
to a crash when a thread couldn't be created.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33940 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-07 16:33:29 +00:00
Axel Dörfler
bde1f75946 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33937 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-07 10:58:18 +00:00
Axel Dörfler
ebcdd1fc61 * r33436 broke user_strlcpy() semantics: with a size of 0, "to" can be ignored,
and it's still a valid call.
* This fixes ktrace_printf() from userland.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33934 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-07 10:42:39 +00:00
Ingo Weinhold
9c7b2520c2 Added get_pthread_thread_id() function returning the Haiku thread_id of a
pthread.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33927 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-07 08:19:24 +00:00
Axel Dörfler
f40c5e3211 * common_rename() now checks the name for validity before passing it on to the
file systems, so those checks don't have to be duplicated there, anymore.
* Minor cleanup, mostly automatic whitespace.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33895 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-05 13:03:06 +00:00
Axel Dörfler
a10ac91f6d * NewBlock(), and Allocate() will now try to reuse existing memory in low
resource situations.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33892 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-05 11:14:12 +00:00
Jérôme Duval
15f18c0947 added missing posix functions
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33867 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-03 20:04:10 +00:00
Oliver Tappe
7e0d60f5b7 adding POSIX-functions llround*(), which Maxime reported missing
* copied implementations for llround(), llroundf() and llroundl() from
  glibc-2.3.2
* added corresponding declarations to math.h


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33863 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-02 19:13:15 +00:00
Axel Dörfler
8cd9a52477 * delete_owned_ports() did not maintain the sUsedPorts variable, and thus led
to bug #4864.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33823 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-29 08:08:31 +00:00
Axel Dörfler
13ce48d922 * Moved dprintf_args()/debug_puts() guts to a new dedicated private function
debug_output().
* Added a second buffer to be used when interrupts are turned off, otherwise
  dprintf_args() will now use a mutex guarded buffer to fill with vfprintf() -
  the actual sending to the outputs still needs the spinlock, so things only
  slightly improved.
* Moved private functions into the private section of the source file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33809 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-28 13:31:55 +00:00
Axel Dörfler
7d6c7206c1 * There is no need for the sPageLock to be a spinlock - a mutex should do. This
should improve the kernel latencies, as things like
  vm_page_allocate_page_run() is very expensive.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33807 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-28 10:44:29 +00:00
Axel Dörfler
954da749a5 * Added SCHED_SPORADIC, and sorted the constants the way it's done in the specs.
* Also changed their numbering.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33788 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-27 13:10:17 +00:00
Axel Dörfler
d88b4037b0 * Reduce maximum priority to B_URGENT_DISPLAY_PRIORITY; real time threads isn't
really something to play with without knowing the outcome.
* Fixed indentation/coding style violations introduced with r33783. Please take
  more care when accepting patches!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33787 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-27 12:34:27 +00:00
Jérôme Duval
f386c5910b Patch from Michael Franz (ticket #4696): sched.h and pthreads to allow setting of the thread priority
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33783 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 22:56:43 +00:00
Jérôme Duval
91844cc151 Patch from Olivier Coursiere (ticket #4064): cond_wait always return EAGAIN with an unitialized pthread_cond_t
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33779 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 19:28:14 +00:00
Axel Dörfler
250288397d * Somehow, I forgot to update set_port_owner() for the new team port list.
* Now, killing a team shut properly cause the app_server to close the windows
  of that team, too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33777 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 17:23:07 +00:00
Axel Dörfler
ebcd4e1ada * Applied patch by "v" with minor changes; this allows the posixtestsuite's
pthread_create 2-1 interface conformance test to pass.
* Also fixed return values to be in the POSIX error range in case we ever switch
  them by default.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33775 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 17:11:02 +00:00
Axel Dörfler
b716ef33bf * pthread_create() will now check if attr is initialized, thus fixing bug #4827.
* pthread_kill() no longer sets errno.
* Use POSIX error codes in POSIX code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33774 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 16:49:11 +00:00
Axel Dörfler
0087f9409b * sem_entry no contains a pointer to the owning team, instead of only its
ID.
* Accidently, this should also fix bug #4839.
* Optimized _get_next_sem_info() a whole lot by iterating over the team's
  semaphore list.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33773 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 15:09:08 +00:00
Axel Dörfler
86a999adfb * delete_owned_ports() no longer scans the whole port array for ports belonging
to the owning team.
* Instead, the team now maintains a list containing the ports it owns.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33771 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 13:34:43 +00:00
Axel Dörfler
07e9fd1d84 * sem_delete_owned_sems() now grabs the team lock for a very short time, and
once only.
* Improved missing team warning.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33770 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 13:29:29 +00:00
Axel Dörfler
bd56fd8a4c * Removed the superfluous handOverPort variable I introduced earlier.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33748 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-23 15:08:47 +00:00
Axel Dörfler
ddbe12007a * Semaphores are now put into the team struct in a doubly linked list.
* This makes sem_delete_owned_sems() a lot more efficient; before it would need
  to scan the entire semaphore table.
* This speeds up the test build of the kernel by another 2 seconds (with
  KDEBUG=2) on my laptop.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33743 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-23 02:06:51 +00:00
Axel Dörfler
6390c0ca80 * _get_next_thread_info() should be a bit more picky about its team needs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33741 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-23 01:15:55 +00:00
Axel Dörfler
3530c3eb6b * Reimplemented the insane _get_next_thread_info() which previously just
iterated over all known thread *IDs* with interrupts disabled.
  Now it iterates over the team's thread list (going from back to front, since
  new threads are added at the front of the singly linked queue).
* Alexandre restarted Tracker quite a lot, and let the shell script run to
  reproduce a certain bug - and then wondered why ProcessController would
  take several seconds to open its windows until it passed through more than
  8 million IDs... :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33737 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-23 00:09:45 +00:00
Axel Dörfler
f28dd36b82 * The alphabet is obviously hard, moved some tracing defines at their
(hopefully) correct place.
* It seems to be even harder to understand basic locking primitives: when you
  think about it, it shouldn't surprise you that conditional variables never
  return B_WOULD_BLOCK. This fixes gdb again.
* Added tracing support to the ports subsystem.
* get_port_message() will now resize the port heap if needed (but will also
  take timeouts into account while doing so, more or less). The initial port
  space is 4MB (as before), the growth rate is the same, and the system wide
  limit is arbitrarily set to 64 MB (all swappable). A team limit has been set
  to 8 MB, but is not enforced yet. Since ports are using up address space in
  the kernel, those seems to be proper limits.
* This also fixes a strange, and rare lockup where the mouse cursor would still
  move, but everything else would basically hang, but look perfectly normal from
  KDL on the first look. As recently happened on Brecht's laptop, and debugged
  by mmlr and me: the cbuf space got used up when lots of windows wanted to
  redraw after a workspace switch. The app_server wouldn't answer anymore to
  client requests, but thought it would have done so, as LinkSender::Flush()
  doesn't care if it got a B_NO_MEMORY (the ports will now block until memory
  is available if possible, so that should not be a problem anymore).
* Improved "port" KDL command, it now also prints the messages in the port.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33735 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 23:14:10 +00:00
Axel Dörfler
5c056f9f10 * set_port_owner() was the only usable call of the port API, and of course it
was used this way in the debugger. Doing this later should be harmless,
  AFAICT, but Ingo will probably know better.
* Beware, though, the debugger currently does not work anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33730 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 16:10:28 +00:00
Axel Dörfler
e8885f2097 Basically rewrote the ports subsystem to use:
* its own heap allocator instead of cbuf - this makes cbuf superfluous, and I
  therefore removed it from the kernel. The heap is swappable, so lifts the
  kernel's resource usage a bit. In the future, the heap should grow as well;
  right now it should be at least as good as before.
* it no longer uses spinlocks, but just mutexes now for better scalability - it
  was not usable with interrupts turned off anyway (due to its semaphore usage).
* it no longer uses semaphores, but condition variables.
* Needed to move the port initialization to a later point, as swappable memory
  wasn't usable that early.
* All ports test are still passing, hopefully I didn't mess anything up :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33728 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 13:24:12 +00:00
Michael Lotz
ee7ec20503 Account for single page allocations. They aren't used anywhere right now because
the bin sizes ensure that when hitting this case it always allocates multiple
pages. This makes it more flexible for other use cases though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33726 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 13:06:15 +00:00
Axel Dörfler
4e61885e4a mmlr+axeld:
* Fixed some minor issues of heap_create_allocator() when it should use the
  kernel heap to allocate its heap structure.
* Fixed an off by one error in the max bin check.
* Changed the KDL "heap" command to allow the "stats" for any heap as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33725 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 12:30:53 +00:00
Michael Lotz
6bb413270b The allocation size wasn't updated on an area based realloc that would still
fit into the existing area. In that case further reallocs could then assume the
wrong previous size and then not copy enough from the original buffer, leading
to lost bytes at the end of the new buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33724 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 12:05:50 +00:00
Axel Dörfler
e0aad96f94 * Allow to use symbols as variables (prefixed with '@'). Now only tab completion
for variable names is missing B-}


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33723 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 11:44:29 +00:00
Axel Dörfler
68d9d8809b * Just use the heap instead of cbuf for send_data().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33722 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 11:42:51 +00:00
Michael Lotz
4bee71c211 * Implement per-CPU heaps. They only get enabled in case there's enough memory.
* Allow an allocator to be created on the heap to allow for non-locked
  allocators to be created.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 08:57:34 +00:00
Michael Lotz
5ee1f125e5 Make use of the wait status field so it can be provided in Notify() and then
read out in the ConditionVariableEntry::WaitStatus(). That way you can notify
with a specific status that can be read out on the other end.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33718 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-21 23:44:59 +00:00
Axel Dörfler
d4563f903d * Use kprintf() instead of dprintf() in KDL.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33711 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-21 18:03:07 +00:00
Axel Dörfler
e7baaab3ae * "sc" and "call" will no longer ignore if they couldn't find the thread you
asked them for.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33709 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-21 17:08:52 +00:00
Michael Lotz
432cc51cc7 Add small but very important missing detail. Before blocking it didn't set the
wait status and therefore would return directly without actually blocking.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33681 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-20 19:05:35 +00:00
Oliver Tappe
571d840abf * dropped svn:keywords property from all files that carried it
to avoid recurring problems during migration of subversion checkouts
  (restored binary files that were garbled by subversions during checkout)
* added appropriate svn:mime-type property for problematic (binary) files
* removed a single (mistyped) svn:mimetype property 
* dropped svn:eol-style property for cleanup (they all contained 'native')



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33670 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 22:42:52 +00:00
Axel Dörfler
86860a0c07 * debug_printf() from userland actually only worked if serial debug output was
turned on. That should explain Bruno's problems to get debug output from an
  accelerant. Thanks to Michael for the hint!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33651 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 08:32:38 +00:00
Axel Dörfler
39e3058e5b * Reverted r33643 - while it doubled the performance for my test case (with
high contention of the read lock (I experimented with the VM page mapping
  lock)), it actually hurt the compile performance pretty obviously.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33647 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 00:16:54 +00:00
Jérôme Duval
095a7d8415 using chroot with a mount point wrongly exposed the mount point name: we now avoid resolving the volume root in case we hit the IO context root.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33645 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 22:58:29 +00:00
Axel Dörfler
22ea088498 * The rw_lock is now using a mutex to protect its reader/writer counts. This
makes the reader case a lot less expensive, and should relieve the thread
  spinlock contention a bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33643 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 19:52:09 +00:00
Axel Dörfler
b2a7fcb404 * Added an arch_debug_stack_trace() function that is called from the KDL loop
in case there aren't any KDL commands available yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33642 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 19:50:13 +00:00
Michael Lotz
b501a0387d anevilyak+korli+mmlr:
* Check for overflows in memory allocation. If someone happened to (erroneously)
  try to allocate a negative amount of memory we could overflow and crash
  because of the sizes getting messed up.
* Review and update the alignment logic which was a bit broken for the huge
  allocation case (reaching the area threshold). Also assert the results so
  next time this will be easier to spot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33638 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 12:35:49 +00:00
Michael Lotz
b7204bd774 Make the swap hash lock into a rw_lock to reduce lock contention a bit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33622 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-17 17:24:59 +00:00
François Revol
6c21b53416 This should fix m68k build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33619 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-17 16:01:10 +00:00
François Revol
c9f536d7b1 Fix ARM build, thx Axel :P
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33618 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-17 15:26:58 +00:00
Axel Dörfler
e0d8627a73 * When you pressed ctrl-alt-del during the boot process, interrupts are disabled
when you enter arch_cpu_shutdown(), so you must not try to load the ACPI
  module to reboot. DaaT, that should fix the problem you showed me.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33617 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-17 14:59:26 +00:00
François Revol
8be612127e When debugging interrupt handlers is enabled, keep count of handled irq for each handler, to ease tracking which driver is unfriendly to others for shared irqs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33614 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-17 12:05:02 +00:00
Axel Dörfler
ec2719329c * Fixed timezones directory path.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33607 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-16 08:26:56 +00:00
Axel Dörfler
3e236885ab * Replaced C with C++ files, should fix BOM's build problem, but will likely
introduce new ones I currently cannot check.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33602 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 15:10:01 +00:00
Axel Dörfler
358b93352e * Moved SIGABRT to the signals that kill the process. Not sure if it's a good
idea to always send SIGKILL to the main thread, though. I'm not really getting
  more insight by reading the POSIX specs.
* Anyway, in the mean time, this fixes bug #4784.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33599 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 11:53:19 +00:00
Axel Dörfler
f1488adbf7 * While r33037 fixed the alignment of areas put into reserved areas, it actually
broke their placement at the end of the reserved area, which was the main
  reason #4778 happened so often (it would have been more hidden else).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33598 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 11:35:31 +00:00
Axel Dörfler
4124f4801b * Reserved areas would also be created in existing reserved areas in case the
space was becoming tight. This actually fixes #4778.
* Fixed overflow problem in find_reserved_area().
* Cleaned up the test app, added license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33597 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 11:23:38 +00:00
Axel Dörfler
3066f3dbf8 * Reverted r33547, this closes bug #4782 - this is obviously a regression in
GCC4.
* Adapted code accordingly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33592 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 07:48:31 +00:00
Axel Dörfler
d5a396a60b * r33037 broke the handling of reserved areas, more specifically, it ignored
the RESERVED_AVOID_BASE flag of those, and introduced a way to fill them
  from the start. This caused #4778.
* Turned IS_VALID_SPOT() macro into an inline function.
* Removed already resolved TODO comment.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33581 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-14 07:53:45 +00:00
Axel Dörfler
ea95b4d03e * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33580 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-14 07:50:53 +00:00
Axel Dörfler
273dbd0916 * The network syscalls now check if you try to pass a non-userland address to
them (which you previously could use to easily crash/take over Haiku).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33570 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-13 07:19:18 +00:00
Axel Dörfler
361f5cdfaf * Build fix for the boot loader (it's now using the new utility functions as
well). Sorry!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33560 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 19:42:50 +00:00
Axel Dörfler
b74a098352 * Got rid of the duplicated functionalities provided by RWLocker.cpp, and
Locker.cpp.
* The services are now using recursive_locks, and rw_locks instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33548 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 14:29:05 +00:00
Michael Lotz
3bb69a8235 * Use mutex and rw_lock and the proper AutoLockers as in the kernel version, as
these interfaces are now available.
* Don't be quite so paranoid by default, the checks that are on by default
  should be enough to detect most memory corruptions.

This makes the debug heap way more usable, so much that you can even use it as
your normal everyday heap without noticing much performance impact (it has quite 
a bit of additional memory overhead though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33544 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 11:29:25 +00:00
Michael Lotz
93b63126e1 Adding mutex and rw_lock with the same interface as the kernel versions to
libroot. The mutex is a simple benaphore, the rw_lock is pretty much the same
as the one from libkernelland_emu but uses a mutex per lock instead of emulating
a global thread lock. Also added MutexLocking and RWLock{Read|Write}Locking and
AutoLockers based on them. It's cased with __cplusplus so the locks are also
usable from C. Everything's currently exposed in shared/private/locks.h but I
think we should make these locking primitves public.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33543 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 11:19:33 +00:00
François Revol
dc33329747 First attempt at an Amiga boot sector, not yet working.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33535 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 20:28:44 +00:00
Bruno G. Albuquerque
891a50b2ae - Fix typo that broke the GCC4 build but not the GCC2 build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33529 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 17:31:00 +00:00
Michael Lotz
7ebd7cfc40 Add a vm_page_allocate_page_run_no_base. It bases its search on the pages found
in the free and/or clear queue. This performs better in the case where only few
pages are free/clear but performs worse in the case where there are a lot of
usable pages. It's not used anywhere but it might come in handy one time.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33527 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:55:21 +00:00
Michael Lotz
7a4d60459e Implement combining scattered physical pages using seperate iovecs in
PageWriteTransfer. This makes the transfer accept virtually contiguous pages,
where the offset is contiguous on either end of the current transfer, but where
the pages aren't physically contiguous. It will then add seperate iovecs for
these pages (32 at max right now). This reduces the number of IO requests
generated and allows for optimizations down the IO path (like in the physical to
virtual mapping case for example).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33526 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:52:19 +00:00
Michael Lotz
303727515e Virtualize the buffers using IOBuffer::GetNextVirtualVec(). This removes the
need for the IO -> InternalIO indirection as it is always fed virtual buffers,
which simplifies things a bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33525 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:50:50 +00:00
Michael Lotz
32e2b6a118 Provide a way to directly request virtual vecs from an IOBuffer. If the buffer
is virtual already it just returns the vecs directly, if it is physical it takes
over the task of virtualizing the vecs either using vm_map_physical_memory_vecs,
if there are multiple vecs or more than one page, or falls back to page wise
mapping if mapping fails or is not needed. In the best case, scattered physical
pages are mapped into one linear virtual buffer so that subsystems operating on
virtual memory only get a single vector and can then burst read/write.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33524 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:49:44 +00:00
Michael Lotz
44778a8a28 Introduce vm_map_physical_memory_vecs. It is like vm_map_physical_memory but
takes a list of iovecs describing the physical pages to be mapped. With it one
can map a set of physically disjoint pages into one linear virtual range. This
is a private API right now, but we might want to make it public as
map_physical_memory_vecs alongside map_physical_memory.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33523 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:48:03 +00:00
Michael Lotz
1af7d11504 * Rework page writing to combine page writes where possible. For now the pages
are required to be physically contiguos, which should be reworked to put them
  into seperate iovecs. Still this manages to combine a great deal of page
  writes into larger bursts already. Reduces the amount of IO requests being
  scheduled (and greatly benefits media where page wise writes are slow when
  they are accessed through a non-IOScheduler path, i.e. USB mass storage until
  that is properly implemented).
* Abstracted per page page writing tasks into a PageWriteWrapper class.
* Abstracted per transfer page writing tasks into PageWriteTransfer class which
  formerly was the PageWriterCallback.
* Use both classes from the PageWriterRun and from
  vm_page_write_modified_page_range to remove code duplication.
* Adjusted synchronous VMAnonymousCache::Write() to cope correctly with larger
  iovecs and more than one iovec. It assumed that there was exactly one page per
  vector previously.
* Introduced MaxPagesPerWrite() and MaxPagesPerAsyncWrite() to VMCache to allow
  a cache to specify restricitions. VMAnonymousCache does restrict the max pages
  to 1 for WriteAsync right now as I didn't feel like reworking that one to cope
  with non single page writes just yet.
* Pulled out PageWriteTransfer methods for better readability.
* Some typo fixes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33507 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-10 22:37:26 +00:00
Michael Lotz
f3bd145c09 When the need for physical to virtual mapping arises because of emulating IO
reads or writes for old style drivers, map the physical memory at once. Since
USB is pretty much the only one affected and there small reads/writes are
exponentially slower, the performance gain of the burst transfer far outweighs
the additional overhead of the mapping. Still this could be further optimized
and will eventually be superseeded by also providing a physical memory API in
USB. For now it should bring back USB reads to an acceptable level. Writes are
still page wise though because of how writing back memory works in general.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33503 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-10 19:55:13 +00:00
Ingo Weinhold
aa6f54aa24 Amended the {user,debug}_strlcpy() fix: Due to the strlcpy() semantics to
always return the source string length, we can't really prevent an overflow
of the source address.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33489 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-09 03:07:11 +00:00
Michael Lotz
0b4d87da22 Add missing word in comment.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33479 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-07 13:29:19 +00:00
Axel Dörfler
ab7516c8f3 * Fixed a dead lock when drivers were scanned: we must not hold the devfs lock
when scanning for drivers, as that reverts the standard locking order with
  locks like the device manager lock. There is now a dedicated scan_lock for
  each directory.
* get_device_name() now locks itself which also adds a missing lock in the
  B_GET_PATH_FOR_DEVICE ioctl().
* Minor refactoring; the directory init code was duplicated over several places
  in the source file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33465 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-06 12:56:21 +00:00
Axel Dörfler
c0f44af061 * Fixed PXE boot loader build again (hey mmu_man!).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33456 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-06 09:25:35 +00:00
Ingo Weinhold
8a71915a9d Made the {debug,user}_{mem,strl}cpy() and user_memset() functions deal with
address overflows. Apparently at least the x86 string instructions generate
a general protection fault instead of a page fault, and we only use the fault
handler in the latter case (maybe we should change that, too). Fixes #4714.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33436 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-05 09:54:40 +00:00
Ingo Weinhold
8ad4a2e971 Improved comment.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33392 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 09:31:20 +00:00
Ingo Weinhold
d815bfef61 Fixed build with tracing enabled.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33391 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 09:30:46 +00:00
Ingo Weinhold
37e6de5d4c Don't destroy tracing entries. This is not necessary and even harmful, if the
code is no longer loaded, e.g. when the module has been unloaded or the tracing
buffer was reattached from a previous session.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33389 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 04:38:19 +00:00
Ingo Weinhold
d6778355ee * <DiskDeviceTypes.h>: Removed kPartitionTypeIntel{Primary,Logical} constants.
* Added new header headers/private/system/disk_device_types.h, which defines
  the <DiskDeviceTypes.h> constants as macros and which can be used where the
  constants cannot be used. The constants are defined using the macros, so now
  there's only one place where the string literals should be specified.
* Use the macros in the partitioning systems. I was too lazy to also adjust the
  file systems -- most of them seem to hard-code the string literal yet.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33386 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:07:42 +00:00
Ingo Weinhold
a9689e8492 * VFS:
- Fixed vfs_get_vnode_from_fd() return type.
  - Added vfs_open_vnode().
  - Added a "bool traverseLeafLink" parameter to vfs_get_fs_node_from_path().
    It was always resolving symlinks.
* device manager/devfs:
  - devfs: get_node_for_path() no longer resolves leaf symlinks. That still
    doesn't help with file disk devices, as creating partition wouldn't work
    anyway.
  - Pulled the module-related implementation part of BaseDevice into new class
    AbstractModuleDevice and made all methods of BaseDevice virtual. Small
    adjustments to devfs to be happy with the new BaseDevice interface.
  - Added BaseDevice subclass FileDevice, which maps the interface to a file's
    file descriptor. Still got a few TODOs, but should basically work.
  - Use FileDevice for publishing file disk devices in devfs. Now those do
    actually work, though there's some BFS trouble with one of the images I
    tested.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33385 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:06:34 +00:00
Ingo Weinhold
3c4721f516 The B_DISK_DEVICE_IS_FILE flag is cleared by KDiskDevice and needs to be reset.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33383 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:04:32 +00:00
Ingo Weinhold
80ea5e3508 Fixed incorrect return value of _user_get_file_disk_device_path().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33382 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:03:56 +00:00
Ingo Weinhold
c51d6579e4 Fixed incorrect uses of user_{strl,mem}cpy() in the kernel debugger. This could
break stack traces.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33381 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:03:16 +00:00
Ingo Weinhold
be51dd0f4c Added debug_strlcpy() for use in the kernel debugger.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33380 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:02:34 +00:00
Ingo Weinhold
268335a069 After creating a userland thread we didn't set up the breakpoints for it.
Fixes #4665.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33369 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-30 08:40:55 +00:00
Stefano Ceccherini
fee1bc8eed Back to timer 2, since timer 0 doesn't work at all.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33368 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-30 06:34:15 +00:00
François Revol
858a20cab8 Patch by Vincent Duvert:
Remove the 4 cores limit at boot, and fix the allocator to handle 8 cores.
There are still performance problems, but this allows booting with 8 cores.
WARNING: since this changes x86 platform kernel args, you really don't want to update haiku_loader and kernel_x86 separately!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33349 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-29 13:07:10 +00:00
Stefano Ceccherini
ea40a61a84 Some big changes, still not working on my laptop, since hpet interrupts
aren't routed correctly over the 8259, it seems.
- Removed passing the hpet_regs around, since there's a static variable.
- Added lots of debug dprintfs.
- Fixed setting the timer interrupt to edge
- Timer is initialized once.
- Use the timer 0 instead of 2.
- Renamed register definitions to be more readable
- Use 64 bits registers and unions where applicable.
- Other things I don't remember


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33345 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-29 08:36:36 +00:00
Stefano Ceccherini
8593bcad87 Use the hpet defines in the source.
Also shortened some defines using "TN" instead of "TIMER". It's also
the same scheme used in the specs


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33334 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 13:14:16 +00:00
Stefano Ceccherini
1d958a301e Moved the "disable APIC" menu(s) to smp.cpp.
Also only enable them if there's an APIC.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33333 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 09:42:59 +00:00
Ingo Weinhold
ac106be534 Inherit the disable_debugger() flag to a fork()ed child. load_image() doesn't
-- I'm undecided whether it should, too. Fixes #4642.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33330 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 02:54:38 +00:00
Stefano Ceccherini
6dc4fd11a2 Uncommented the hpet timer from the timers list.
Lowered its priority of hpet timer so it doesn't get picked up first
(yet)
Changed the debug output to be conditional.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33292 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 10:48:37 +00:00
Stefano Ceccherini
6d92e80531 - Moved timer conversion to a method, and added LL to the conversion
factor to avoid compiler issues.
- Removed some useless and commented debug stuff.
- Now prints also the global HPET configuration.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33291 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 10:36:39 +00:00
Stefano Ceccherini
4687d95b68 Renamed x86_hpet.c to x86_hpet.cpp and fixed the compile errors.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33290 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 09:50:32 +00:00
Stefano Ceccherini
8626c1aa5f the HPET timers resolution is REALLY high. The time conversion was off by
1000. XenServer boots correctly and in reasonable time,
now (meaning hpet timers work). I guess on real hw the bios doesn't
correctly program the hpet timers, so we'll need a bit more work.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33289 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 09:49:02 +00:00
Stefano Ceccherini
9ea40f7802 Cosmetics.
XenServer actually boots (but slow as hell) with hpet timers enabled, real hardware does
not.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33287 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 08:29:42 +00:00
Stefano Ceccherini
dd9b76727d Enable hpet_init() in the boot loader. All it does is searching the hpet
table and mapping it if needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33286 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 07:06:58 +00:00
Stefano Ceccherini
d54e62b2c8 Added dumping the timer configuration, and the possibility to use any of
the hpet timer, not just the first 3.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33285 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 05:08:22 +00:00
Stefano Ceccherini
b1c4413c56 Turns out the selection sort algorithm was broken for more than... 2 entries,
if they were not already ordered. Or, to say id differently, it was completely
broken.
Luckily no one noticed....
Also disabled again printing the timers, since it could print not available ones.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33235 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-22 19:58:40 +00:00
Stefano Ceccherini
7ddaf32ecc Second (or third) try at getting the timers ordered by priority, in
r33218 I had ordered the timers in the wrong order.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33225 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 14:44:11 +00:00
Stefano Ceccherini
ca7ba3eb23 pretty much reverted r33218.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33224 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 13:16:13 +00:00
Stefano Ceccherini
77a9df0a47 Disable tracing.
Wow! 4 commits for a simple thing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33223 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 10:21:57 +00:00
Stefano Ceccherini
249346009f Fix for the fix. The previous commit actually broke initalizing timers.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33222 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 10:21:00 +00:00
Stefano Ceccherini
9091ba579c Don't print an error if the initialization actually succeeded.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33221 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 10:18:56 +00:00
Stefano Ceccherini
cb35a69347 Introduce the PIT commands as defines and used them in the pit timer
module. They should be used also in the bootloader.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33220 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 10:14:15 +00:00
Stefano Ceccherini
bf7902cb4b Fix build with tracing enabled
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33219 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 09:50:30 +00:00
Stefano Ceccherini
bed1c0d42e Sort timers by priority before initializing them, so we avoid initializing
timers which we will never use.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33218 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-21 09:49:41 +00:00
Stefano Ceccherini
e5f7219f3a Fixed typo for real. Also disabled tracing for HPET
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33157 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-16 20:23:06 +00:00
Stefano Ceccherini
1412a38e9b Fixed build with tracing enabled.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33153 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-16 12:20:27 +00:00
Stefano Ceccherini
483651906f Fix typo
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33152 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-16 10:40:12 +00:00
Stefano Ceccherini
e08bb3e0f2 Removed leftover
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33151 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-16 10:16:35 +00:00
Stefano Ceccherini
1d5026909d Basically reverted previous commit, since at that point we haven't yet
checked the existence of the apics.
Moved the code to disable the local apic from arch_timer.c to arch_int.cpp, so
we also avoid installing the interrupt handler for it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33149 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-15 20:22:04 +00:00
Stefano Ceccherini
44f6eb85bd removed the 'smp' part from apic_smp_init_timer(), since it's used also without smp (I guess this was a leftover)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33148 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-15 20:00:57 +00:00
Stefano Ceccherini
24ca62447c Only show the "Disable APIC" option if an APIC is found.
Same for the IOAPIC, but commented out the code, since we're not using the
IOAPIC yet.
Also renamed the option to "Disable LOCAL APIC", since it's more correct.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33147 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-15 17:43:30 +00:00
Jérôme Duval
40d6120c3b Patch from Vincent Duvert (edited by myself): Implement reboot via ACPI (#4459)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33135 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-14 17:37:53 +00:00
Stefano Ceccherini
da11bb8dcb Use TRACE() instead of dprintf()
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33134 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-14 11:54:48 +00:00
Stefano Ceccherini
4f5ca99156 Added dprintf() to be able to see which driver hangs on load
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33133 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-14 11:47:16 +00:00
Stefano Ceccherini
f0bf38026a Add safemode option to disable the use of APIC timers
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33132 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-14 09:02:15 +00:00
Michael Lotz
1bcca32a9e * Also take into account that the alignment due to B_ANY_KERNEL_BLOCK_ADDRESS
can cause overflows.
* Added a generic IS_VALID_SPOT() macro that checks for overflows and checks if
  the area will fit with the given constraints.
* Use the macro to simplify the places where these checks are necessary.
* Use the provided "end" limit instead of the address space end. It currently
  doesn't matter but makes more sense.
* Rename newBase variables to alignedBase as that's what they are.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33061 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-11 07:29:36 +00:00
Michael Lotz
e717a35b6f * Change the way we check for enough available space when searching for spots
to insert areas so we don't overflow.
* Consequently use the area end (base + size - 1) where appropriate which
  prevents overflows in a few places.
* Properly check for reaching the address space end.
* If we've already found a spot we don't need to recheck if we've found one.
* Simplify the B_EXACT_ADDRESS checks down to a simpler single if statement
  instead of the four seperate ones.
* Properly calculate the search end for B_EXACT_ADDRESS as well, it's also
  base + size - 1.
* Block the full last page now that this actually works without overflowing.
* Some style changes and added spacing.

This should now really fix #2550. Previously the overflow protection didn't
actually work because on allocation we overflowed and completely missed the
protecting area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33037 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 17:58:19 +00:00
Michael Lotz
5332eb402b Style fix. I really tried hard, but still failed...
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33034 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 02:11:40 +00:00
Michael Lotz
65b5e4d7ed Make use of the address range blocking to guarantee that accessing 0xdeadbeef
and 0xcccccccc (and 64 pages thereafter) in any way will always lead to a crash.
Before it could happen that these ranges were allocated for an area and then
accessing these would not be as evident anymore. Only enabled when the
corresponding paranoid setting is enabled (which it currently is).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33033 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 02:09:16 +00:00
Michael Lotz
9aff7f1593 Block the very last page of kernel address space. The problem here is that non
of the VM functions handling areas are overflow safe. If an area is created that
spans across the last page many places will run into an integer overflow. This
mostly concerns the area allocation path in find_and_insert_area_slot() and also
vm_create_anonymous_area() where the loop for mapping pages for B_FULL_LOCK
areas overflows and runs more times than it should leading to #2550.
This could be seen as a workaround. The real fix would be to make everything
overflow safe. The thing is that this does also concern the user of the area
which could easily have forgotten to check for overflows as well, so I am a bit
uneasy with handing out areas that could easily lead to such hard to debug
problems. Since this is really an edge case and this single step safes quite a
bit of extra checks I'd actually be OK with keeping it that way.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33032 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 02:03:31 +00:00
Michael Lotz
3794518c2d Also check for read-protection of an area. Adjusted naming from read-only to
write-protected and read-protected.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33031 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 01:47:22 +00:00
Michael Lotz
0f4242de40 Implement a vm_block_address_range() function which creates an area with no
mapped pages and a non-read and non-write protection to block a certain address
range from being used by anything.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33030 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 01:40:46 +00:00
Oliver Tappe
425cb3d716 * revert r32999 and adjusted each filesystem to return B_NOT_A_DIRECTORY in
its open_dir() implementation instead (as suggested by Ingo).
-alphabranch (it's only a cleanup)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33025 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-09 13:45:12 +00:00
Michael Lotz
1a053eedc0 Revert r32994 and add a comment to explain the intention. Thanks Ingo for the
clarification.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33001 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-08 16:24:43 +00:00
Oliver Tappe
be628a94e2 * opendir() is supposed to return ENOTDIR if the given path is not
a directory, we returned EINVAL instead, which caused Perl's internal
  glob() implementation to fail prematurely
+alphabranch (will do that myself in a minute)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32999 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-08 15:59:51 +00:00
Michael Lotz
fbcf5f3f92 Don't know what this was supposed to do, but with the VADDR_TO_PDENT() it would
end up as 0 again in any case. It certainly looks correct without it, removing
so it doesn't confuse the next one reading over it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32994 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-08 03:51:17 +00:00
Michael Lotz
257f000bd2 * When reserving pages and there aren't yet enough free pages, only steal as
many pages as are actually missing, not the full count.
* Take into account that free_page_queue_count() can be less than sReservedPages
  (when some of the reserved pages have been allocated already) in
  vm_page_num_unused_pages(). Before it could return negative and therefore
  wrapped numbers.
* Simplify the page scrubber loop by continuing early. Also avoids a needless
  interrupt spin lock acquisition when there's nothing to do.
* Some minor coding style cleanup.
* Fix a typo.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32980 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-07 02:08:09 +00:00
Michael Lotz
1dd6345561 If the boot volume is BFS and read-only mount it with the write_overlay. This
allows for BFS based LiveCDs. Still this whole name matching feels hacky.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32976 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-06 23:15:23 +00:00
Michael Lotz
aad5c04223 Add valloc() and posix_memalign() to malloc debug heap.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32954 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-06 05:13:01 +00:00
Michael Lotz
a712373138 Apply fix of r32951 to malloc debug heap as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32953 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-06 05:11:48 +00:00
Michael Lotz
da3412492a When we actually delete the area, we can obviously not access the next pointer
stored in there anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32951 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-06 05:04:55 +00:00
Michael Lotz
c39414002f Give an IORequest user the possibility to suppress child finish notifications.
This allows for synchronous uses where subrequests are forked off and waited on.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32936 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-05 01:16:56 +00:00
Michael Lotz
c24f6c7b06 When deleting all subrequests the pending children count should probably be
reset as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32935 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-05 00:26:29 +00:00
Michael Lotz
230153f133 Reset the error variable to B_OK in case we want to continue after allocating
only some sub requests worked. Previously we would have simply canceled all
of the subrequests in the loop because we cancel after the first error.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32914 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-03 05:40:06 +00:00
Michael Lotz
b2350565ba Fix two problems in devfs_io:
* An off by one error prevented the very last block of a device to be accessed
  through IO.
* In case of error the request wasn't notified causing anyone (the page writer
  for example) to wait forever for the request to complete.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32913 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-03 05:36:23 +00:00
Michael Lotz
185fd1c5d2 Ported over the kernel heap to libroot to make use of it's validation
capabilities to aid in debugging memory corruption issues.

It does:
* Initialize memory to 0xcc to help turn up use of uninitialized memory
* Set freed memory to 0xdeadbeef to help find accesses of freed memory
* Use the paranoid heap validation to turn up many cases of memory corruption
* Use a simplistic wall check to turn up memory overwrites past allocations
* Take extra steps to validate freed addresses to turn up misaligned frees

It has an interface to en-/disable paranoid validation and to start/stop regular
wall checking. Both are currently just enabled. At a later stage a debug version
of libroot could be used by an application and the checks enabled at will. Note
that due to the paranoid validation and the suboptimal locking this allocator
will perform horribly. Still to find memory corruption issues in the system or
also in your applications it can be helpful to build your installation with it
turned on. To enable it you currently need to edit the Jamfile to sub-include
the malloc_debug instead of the malloc directory.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32894 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 18:15:30 +00:00
Axel Dörfler
7945b22962 * Quick fix to send notifications on mount/unmount/initialize.
* This closes #2081.

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32891 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 13:59:36 +00:00
Axel Dörfler
a2bb341447 * Cleanup, no functional change.
+ alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32890 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 13:23:05 +00:00
Michael Lotz
419f2d6f3e Fix errors in maintaining the area list due to assumptions that are only true
for the page list but not the area one. Since multiple pages can be allocated
at once, even an area that is not at the top of the list can become empty. In
such a case the area list would previously have lost entries. Also because
we can remove more than one page from any area, not just the top one, we may
need to move forward in the list so that it stays ordered by free pages.
+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32880 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 08:46:39 +00:00
Michael Lotz
5bfffb9d94 The block size wasn't initialized, causing usages of an IOScheduler without
a DMAResource not to work.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32879 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 03:37:20 +00:00
Axel Dörfler
9cca7d50e9 * Backported r32851 from the r1alpha branch.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32859 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-31 14:50:38 +00:00
Stephan Aßmus
9e15ae596c Added TODO about solving the renaming /boot problem differently as discussed
with Ingo.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32856 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-31 13:16:40 +00:00
Marcus Overhagen
a26bf7958f truncate strings to allow building the debug version
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32837 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-30 15:04:04 +00:00
Rene Gollent
92e143c14a Fix regression introduced in r32526: registering the device watcher for node monitoring needs to happen synchronously, otherwise a race condition occurs: unless you're very lucky, the event for creating the raw device would happen before the async thread had a change to add the node monitor, and as such the listener would miss it, and never trigger a filesystem/partition scan. As a result, whether or not adding a USB stick would actually show a volume was essentially russian roulette. Fixes ticket #4345.
+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32820 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-29 21:49:59 +00:00
Ingo Weinhold
adbf8b25f8 * Added fdopendir() (POSIX).
* Got rid of <dirent_private.h> -- the __DIR structure is private to dirent.c,
  now. The attribute directory, index directory, and query functions use the
  the public POSIX API, so does the kernel module code. Those components were
  not initializing the structure correctly anymore since the introduction of
  telldir()/seekdir().

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32819 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-29 20:25:24 +00:00
Axel Dörfler
6a9eee5845 * We support the timespec stat times, so why not allowing the user to set
the times with higher resolution as well?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32814 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-29 15:53:15 +00:00
Michael Lotz
d18b04298a Cleanup, remove needless line-break and trailing space. Also switched that "& "
to " &" as really the whole rest of the file uses that style.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32813 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-29 15:35:11 +00:00
Stephan Aßmus
8c5ad61d4b * Prevent the /boot entry from ever being renamed. You couldn't even try to
switch /boot to a different volume in two operations, unless you have first
  linked /system/lib into /bin. This patch assumes that / will always have the
  ID 1. Don't know if that is proper. Note that I also thought about solving
  this in the VFS, since perhaps it isn't the job of root-fs to know about
  /boot, but that would of course introduce another check for every rename
  operation, which I decided against.

+alphabranch


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32806 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-29 10:43:51 +00:00
Axel Dörfler
e09d819b6c * Since the Media/Translation Kit errors are now in Errors.h as well, we don't
need to include those two anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32781 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-28 13:01:33 +00:00
Stefano Ceccherini
11dbc6cf7a Reverted r28531 since we have working wcrtomb() and mbrtowc().
Seems like we didn't remember to change it back, even
with the #warning. :-)
I tested ftp and it works fine. This also closes ticket #4176.
+alphabranch 


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32766 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-27 20:33:18 +00:00
Stefano Ceccherini
1c2a5ae241 Fixed gcc4 warnings.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32764 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-27 20:26:31 +00:00
Axel Dörfler
89294b5084 * Added option for enabling serial debug output.
* Moved device_manager/settings.cpp to debug/safemode_settings.cpp.
* Removed the somewhat hacky concatenation of kernel settings and safemode
  settings in the boot loader. Instead, get_safemode_option() will now fall
  back to the kernel settings, if it couldn't spot a setting in the safemode
  settings. This allows for more control, and also makes enabling serial
  debug output actually work (ie. overriding the kernel settings via safemode
  options).
* Adjusted debug_init_post_vm(), and smp_init_other_cpus() to use
  get_safemode_boolean().
* Therefore, I added safemode_settings.cpp to the boot loader as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32685 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-26 08:47:54 +00:00
Axel Dörfler
e17f8de82d * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32684 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-26 08:27:54 +00:00
Axel Dörfler
f8ebd1a328 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32683 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-26 08:05:22 +00:00
Ingo Weinhold
2fb48fb46b Added missing ENOATTR text.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32681 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-26 01:01:43 +00:00
Ingo Weinhold
b02c147c05 Implemented seekdir() and telldir(). They were declared in <dirent.h> already.
So either +alphabranch or remove the declarations from <dirent.h>.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32679 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-25 22:16:40 +00:00
Jonas Sundström
9fbc65a94d Modified *jmp stubs for arch mipsel. Removed PowerPC asm.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32623 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-23 03:17:13 +00:00
Jonas Sundström
893988af82 Added and modified kernel stubs and headers for arch mipsel. Correctness not included.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32621 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-23 02:52:09 +00:00
Michael Lotz
f1a7a3752f * Use the locked version of inherit_parent_user_and_group() by moving the call
into the scope of the lock. Saves an InterruptsSpinLocker.
* Use an InterruptsSpinLocker() as in other places.
* When creating/forking a team fails because the kernel thread cannot be spawned
  balance the already sent TEAM_ADDED notification by sending a TEAM_REMOVED one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32595 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-22 03:07:11 +00:00
Jonas Sundström
8e8130d1f0 Adding routerboard_mipsel platform stubs and linker script.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32594 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-22 01:48:18 +00:00
Rene Gollent
c3350a57ff Squashed a TODO: When delivering signals, check if a) any threads were in fact enqueued, and b) if the scheduler's preemption hint indicates that a reschedule is desired. This prevents unnecessarily invoking the scheduler every single time a signal is delivered, regardless of result.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32592 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 23:48:42 +00:00
Michael Lotz
29bd9bfd7d Remove SMP_MSG_RESCHEDULE_IF_IDLE as it is not used anymore.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32574 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 16:14:18 +00:00
Michael Lotz
861b223cf2 * Strip down scheduler_simple. Anything related to multiple CPU handling has
been removed. That includes CPU disabling and thread pinning, as that becomes
  pointless with only one CPU.
* Return a proper reschedule hint on enqueing a thread, based on the priority
  of the current thread vs. the enqueued one.
* Enable dynamic scheduler selection. With one CPU the simple scheduler will
  be used, otherwise affine is selected.
* Removed the scheduler type define as we now always auto-select it.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32573 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 16:10:27 +00:00
Rene Gollent
009ccc2962 anevilyak+mmlr:
* scheduler_enqueue_in_runqueue() now allows the scheduler to return a hint as to whether a reschedule is desirable or not. This is used in a few other places in order to relegate scheduling decisions entirely to the scheduler rather than the priority hacks previously used. There are probably other places in the kernel that could now make use of that information to more intelligently call reschedule() though.
* Switch over the default scheduler to scheduler_affine().



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32554 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 04:11:40 +00:00
Rene Gollent
66dde0a85d Fix build with TRACE_SMP enabled.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32550 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-20 23:39:22 +00:00
Axel Dörfler
6d908f83f3 * Must be careful which functions to call in the notifications handler, or else
you can easily produce a dead lock. This should fix the system hang
  experienced as part of bug #4223.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32526 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-19 17:09:33 +00:00
Michael Lotz
152132f08a mmlr+anevilyak:
* Keep track of the currently running threads.
* Make use of that info to decide if a thread that becomes ready should preempt
  the running thread.
* If we should preempt we send the target CPU a reschedule message.
* This preemption strategy makes keeping track of idle CPUs by means of a bitmap
  superflous and it is therefore removed.
* Right now only other CPUs are preempted though, not the current one.
* Add missing initialization of the quantum tracking code.
* Do not extend the quantum of the idle thread based quantum tracking as we want
  it to not run longer than necessary. Once the preemption works completely
  adding a quantum timer for the idle thread will become unnecessary though.
* Fix thread stealing code, it did missed the last thread in the run queue.
* When stealing, try to steal the highest priority thread that is currently
  waiting by taking priorities into account when finding the target run queue.
* Simplify stealing code a bit as well.
* Minor cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32503 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-19 03:19:17 +00:00