Commit Graph

1709 Commits

Author SHA1 Message Date
Ingo Weinhold
e5846dfa61 Added shared sort_[physical_]address_ranges() to avoid code duplication. Also
fixes the m68k build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36951 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-27 17:08:47 +00:00
Ingo Weinhold
d73ddac5bf * Introduced phys_addr_range type, an equivalent to addr_range for physical
address ranges, and a set of support functions working with it.
* Changed the type of the kernel_args physical address range arrays to
  phys_addr_range and adjusted the code working with those.
* Removed a bunch of duplicated address range code in the PPC's mmu.cpp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36947 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-27 11:50:40 +00:00
Ingo Weinhold
147133b76c * First run through the kernel's private parts to use phys_{addr,size}_t
where appropriate.
* Typedef'ed page_num_t to phys_addr_t and used it in more places in
  vm_page.{h,cpp}.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36937 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-25 21:34:08 +00:00
Ingo Weinhold
9d570af7c8 Changed the type of the "op" parameter of the fs_vnode_ops::ioctl() hook and
the _kern_ioctl() syscall from ulong to uint32.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36927 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-24 21:04:22 +00:00
Ingo Weinhold
f51bcfb25b Added a heap_init_post_area() which is called right after areas can be
created, and moved the heap's grow and VIP heap initialization to it. Should
fix #5956.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36855 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-18 15:51:27 +00:00
Ingo Weinhold
13fa4c845a * Introduced new area creation flag CREATE_AREA_DONT_COMMIT_MEMORY.
map_backing_store() doesn't commit memory when this flag is given.
* Used the new flag vm_copy_area(): We no longer commit memory for read-only
  areas. This prevents read-only mapped files from suddenly requiring memory
  after fork(). Might improve the situation on machines with very little RAM
  a bit.
  We should probably mark writable copies over-committing, since the usual
  case is fork() + exec() where the child normally doesn't need more than a
  few pages until calling exec(). That would significantly reduce the memory
  requirement for jamming the Haiku tree.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36651 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-06 14:59:14 +00:00
Ingo Weinhold
863c623f9a Added is_address_range_covered(), returning whether the given address range
is fully covered by the ranges in the array.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36631 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-05 21:09:11 +00:00
Axel Dörfler
8c8fcd770a * Moved the addition of the basic debugger commands directly after the VM init.
* Separated the other stuff previously done in debug_init_post_vm() to the new
  debug_init_post_settings().
* Removed superfluous status_t return codes - they are ignored, anyway, and if
  there really is a show stopper in the init process, panicking would be the
  thing one should do.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36623 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-05 10:05:25 +00:00
Ingo Weinhold
c1be1e0761 * VMTranslationMap::Map()/Protect(): Added "memoryType" parameter. Not
implemented for any architecture yet.
* vm_set_area_memory_type(): Call VMTranslationMap::ProtectArea() to change the
  memory type for the already mapped pages.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36574 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-01 21:33:12 +00:00
Ingo Weinhold
3b0c1b5227 * VMArea: Made memory_type private and added setter and getter methods.
* Don't set the VMArea's memory type in arch_vm_set_memory_type(), but let the
  callers do that.
* vm_set_area_memory_type(): Does nothing, if the memory type doesn't change.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36573 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-01 20:41:57 +00:00
Ingo Weinhold
907886143f * Changed some parameters of VM syscalls from int to uint32, mostly for sake
of consistency.
* Moved the B_OVERCOMMITTING_AREA flag from B_KERNEL_AREA_FLAGS to
  B_USER_AREA_FLAGS, since we really allow it to be passed from userland.
* Most VM syscalls check the provided protection against B_USER_AREA_FLAGS
  instead of B_USER_PROTECTION, now. This way they allow for
  B_OVERCOMMITTING_AREA as well.
* _user_map_file(), _user_set_memory_protection(): Check the protection like
  the other syscalls do and use fix_protection() instead of doing that
  manually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36572 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-05-01 19:47:39 +00:00
Ingo Weinhold
7f987e49d7 Added a rendez-vous variable parameter to smp_trap_non_boot_cpus() and make
boot CPU wait until all other CPUs are ready to wait. This solves a
theoretical problem in main(): The boot CPU could run fully through the early
initialization and reset sCpuRendezvous2 before the other CPUs left
smp_cpu_rendezvous(). It's very unlikely on real hardware that the non-boot
CPUs are so much slower, but it might be a concern in emulation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36558 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-30 19:32:12 +00:00
Ingo Weinhold
28d05e026f Make scheduler_reschedule() an no-op until we're ready to start the
scheduler. This avoids the need to use the send_signal_etc() work-around for
resume_thread() during the early kernel initialization. Might fix #5851.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36530 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-29 15:10:37 +00:00
Ingo Weinhold
b1e06d23ce * The "page_stats" command does now also print the longest contiguous runs of
free respective free and cached pages.
* Removed the unused vm_page_allocate_page_run_no_base().
* vm_page_allocate_page_run() (and allocate_page_run()):
  - Use vm_page_reserve_pages() instead of vm_page_try_reserve_pages(), i.e.
    wait until the reservation succeeds.
  - Now we iterates two times through the pages to find a suitable page run. In
    the first iteration it only looks for free/clear pages, in the second
    iteration it also considers cached pages. This increases the chance of the
    function to succeed, when a lot of caching is going on.
    This reduces the amount of memory required to use the IOCache when booting
    off the anyboot Live CD to around 160 MB in qemu. It also seems to work with
    128 MB, but the syslog indicates that some memory allocations fail, which
    is not exactly inspiring confidence.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36489 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-26 13:56:09 +00:00
Ingo Weinhold
efeca209a1 Made VMCache::Resize() virtual and let VMAnonymousCache override it to free
swap space when the cache shrinks. Currently the implementation stil leaks
swap space of busy pages.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36373 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-20 14:04:18 +00:00
Axel Dörfler
868aa7a0e0 * Added shortcut handling to the boot loader menu (in preparation of adopting
ticket #5312).
* Added shortcut 'b' to continue booting, 'r' to reboot.
* Consolidated asterisk style.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36310 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-15 18:07:40 +00:00
Axel Dörfler
7af231d838 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36305 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-15 17:05:20 +00:00
Axel Dörfler
9de17be600 * Moved I/O APIC initialization to a later point, now the APCI and DPC modules
can safely be used.
* Since using the I/O APIC is disabled by default, I've removed the "return"
  that prevented its use when enabled. Let's see if it already does anything.
* Adapted other arch_int.cpp with a bit of cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36290 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-15 12:42:10 +00:00
Ingo Weinhold
c3676b54bf * Added vm_debug_copy_page_memory() which copies memory from a potentially not
mapped page.
* debug_{mem,strl}cpy():
  - Added "team" parameter for specifying the address space the address are
    to be interpreted in.
  - When the standard memcpy() (with fault handler) fails, fall back to
    vm_debug_copy_page_memory().
* Added debug_is_debugged_team(): Predicate returning true, if the supplied
  team_id refers to the same team debug_get_debugged_thread() belongs to.
* Added DebuggedThreadSetter class for scope-based debug_set_debugged_thread().
  Made use of it in several debugger functions.
* print_demangled_call() (x86): Fixed unsafe memory access.

Allows KDL stack traces to work correctly again, even if the page daemon has
already unmapped the concerned pages.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36230 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-13 17:40:15 +00:00
Ingo Weinhold
86875ad9d1 Added VMCache::DebugHasPage() and DebugLookupPage() for use in the kernel
debugger.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36228 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-13 17:18:57 +00:00
Ingo Weinhold
09418c869b Added DebugGet() method for use in the kernel debugger.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36227 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-13 17:16:42 +00:00
Michael Lotz
33fbe25496 * Add code to allocate and free interrupt vectors for message signaled
interrupts (MSI).
* Add the remaining IDT entries and redirection functions in the interrupt code.
* Make the PIC end_of_interrupt() return a result to indicate whether the vector
  was handled by this PIC. If it isn't we now issue a apic_end_of_interrupt()
  in the assumption of apic local interrupt, MSI or IPI. This also removes
  the need for the gUsingIOAPIC global and doing manual apic_end_of_interrupt()
  calls in the SMP and timer code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36221 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-13 14:46:09 +00:00
Michael Lotz
3d310bd5f4 * Fix build, the APIC definitions are used in the bootloader too.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36189 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-12 15:59:40 +00:00
Michael Lotz
5819c3f9ff Forgot to remove these in the previous commit.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36183 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-12 13:07:21 +00:00
Michael Lotz
655f3b4161 Seperate the generic (local) APIC stuff into it's own file and use it from the
other places where previously the same functionality was duplicated. Also
seperated the header which was originally arch_smp.h into apic.h and arch_smp.h
again as some of it is MP and not actually APIC.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36182 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-12 12:56:13 +00:00
Axel Dörfler
ee0d2be9e4 bonefish+axeld:
* Implemented a tiny bit more sophisticated version of
  estimate_max_scheduling_latency() that uses a syscall that lets the scheduler
  decide.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36170 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-11 20:40:58 +00:00
Ingo Weinhold
813d4cbe94 * Moved created subdirectory src/system/kernel/lock.cpp to new subdirectory
locks.
* Added syscalls for a new kind of mutex. A mutex consists only of an int32 and
  doesn't require any kernel resources. So it's initialization cannot fail
  (it consists only of setting the mutex value to 0). An uncontended lock or
  unlock operation can basically consist of an atomic_*() in userland. The
  syscalls (when the mutex is contended) are a bit more expensive than semaphore
  operations, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36158 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-11 16:07:39 +00:00
Ingo Weinhold
349039ff2e Added vm_[un]wire_page(), which are essentially versions of
[un]lock_memory_etc() optimized for a single page.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36156 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-11 15:07:06 +00:00
Axel Dörfler
7f0bff63d0 * Fixed typo.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36058 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-07 07:05:20 +00:00
Ingo Weinhold
2be99447d8 * Added some comments to the thread flags.
* Added new thread flag THREAD_FLAGS_ALWAYS_RESTART_SYSCALL. If set, it forces
  syscall restart even when a signal handler without SA_RESTART was invoked.
* Fixed sigwait(): If one of requested signals wasn't already pending it would
  never wake up. Also, the syscall always needs to be restarted, if interrupted
  by another signal.
* Renamed a bunch of the POSIX signal function implementations which did return
  an error code directly (instead via errno). Added correct POSIX functions
  where needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36054 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-06 20:23:18 +00:00
Ingo Weinhold
4f774c503c * VMArea::Unwire(addr_t, size_t, bool): Don't delete the removed range, but
return it.
* lock_memory_etc(): On error the VMAreaWiredRange object could be leaked.
* [un]lock_memory_etc(): Call VMArea::Unwire() with the cache locked and
  explicitly delete the range object after unlocking the cache to avoid
  potential deadlocks.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36035 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-05 12:12:36 +00:00
Ingo Weinhold
369111e741 * Removed the VMArea::Wire() version that has to allocate a VMAreaWiredRange.
Since the requirement is that the area's top cache is locked, allocating
  memory isn't allowed.
* lock_memory_etc(): Create the VMAreaWiredRange object explicitly before
  locking the area's top cache.

Fixes #5680 (deadlocks when using the slab as malloc() backend).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36033 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-05 11:08:01 +00:00
Ingo Weinhold
550376ffb8 * vm_delete_areas(): Changed return type to void (was status_t and not used).
* _user_map_file(), _user_unmap_memory(): Verify that the address (if given) is
  page aligned.
* Reworked memory locking (wiring):
  - VMArea does now have a list of wired memory ranges and supports waiting for
    a range to be removed.
  - vm_soft_fault():
    - Added "wirePage" parameter that, if given, makes the function wire the
      page and return it.
    - Added "wiredRange" parameter (for calls from lock_memory_etc()) and made
      sure we never unmap wired pages. This could e.g. happen when a page from a
      lower cache was read-mapped and a write fault occurred. Now in such a
      situation the function waits for the page to be unwired and restarts.
  - All functions that manipulate areas in a way that could affect wired ranges
    do now either require the caller to make sure there are no wired ranges in
    the way or do that themselves. Added a few wait_if_*_is_wired() helper
    functions for that purpose.
  - lock_memory_etc():
    - Does now also work correctly when the range spans more than one area.
    - Adds VMAreaWiredRanges to the affected VMAreas and retains an address
      space reference (so that the address space won't be deleted as long as a
      wired range exists).
    - Resolved TODO: The area's caches are now locked when
      increment_page_wired_count() is called.
    - Resolved TODO: The race condition due to missing locking after looking up
      the page mapping is now prevented. We hold the cache locks (in case the
      page is already mapped) and the new vm_soft_fault() parameter allows us
      to get the page wired.
  - unlock_memory_etc(): Changes symmetrical to those in lock_memory_etc() and
    resolved all TODOs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36030 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-04-03 18:01:29 +00:00
Ingo Weinhold
feddedab0c x86:
Added fields for temporary storage of the debug registers dr6 and dr7 to the
arch_cpu_info structure. The actual registers are stored at the beginning of
x86_exit_user_debug_at_kernel_entry() and read in
x86_handle_debug_exception().
The problem was that x86_exit_user_debug_at_kernel_entry() itself overwrote
dr7 and, if kernel breakpoints were enabled, dr6 could be overwritten anytime
after. So x86_handle_debug_exception() would find incorrect values in the
registers (definitely in dr7) and thus interpret the detected debug condition
incorrectly. Usually watchpoints were recognized as breakpoints.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35951 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-26 00:03:53 +00:00
Ingo Weinhold
cfefeee3f8 * Changed arch_debug_save_registers() to take an arch-specific structure
arch_debug_registers instead.
* Call arch_debug_save_registers() on all CPUs when entering the kernel
  debugger.
* Added debug_get_debug_registers() to return a specified CPU's saved
  registers.
* x86:
  - Replaced the previous arch_debug_save_registers() implementation. Disabled
    getting the registers via the gdb interface for the time being.
  - Fixed the "sc", "call", and "calling" commands to also work for threads
    running on another CPU.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35907 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-18 17:20:06 +00:00
Ingo Weinhold
fe0963a835 Added commands to the page access debugging panic()s.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35904 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-18 16:19:13 +00:00
Ingo Weinhold
085cf27b40 * Added Directory::CreateFile() which can be implemented by file systems to
support file creation.
* Extended open() and open_from() to support O_CREAT to create files.
  open_from() has got an optional "permissions" parameter for that purpose.
* Fixed errno. It would crash when being used. Also changed the POSIX functions
  to return their error code via errno as expected.
* Added writev().
* FAT file system:
  - Added support for reading long file names.
  - Added support for creating files (8.3 name only) and writing to them.
  - Enabled scanning partitions with it.
* Boot loader menu:
  - Enabled the "Reboot" menu item unconditionally.
  - Added "Save syslog from previous session" menu item to the debug menu.
    Currently saving the syslog to FAT32 volumes is supported.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35882 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-16 17:29:58 +00:00
Ingo Weinhold
fac2ce3d92 Added ring_buffer_get_vecs() that returns iovecs describing the contents of
the buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35880 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-16 17:07:40 +00:00
Ingo Weinhold
7778bccf93 sigsuspend() would previously wake up correctly when a matching signal was
received, but if the signal was in the thread's signal block mask, it would
not be handled. Added thread::sig_temp_enabled, an additional mask of not
blocked signals, which is set by sigsuspend() and evaluated and reset by
handle_signals(). Fixes #5567.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35836 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-13 13:17:40 +00:00
Ingo Weinhold
f795376ec6 remove_addr_range() is actually called remove_address_range().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35824 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-12 16:55:42 +00:00
Ingo Weinhold
28a2172c3f kernel:
* The kernel syslog ring buffer is no longer emptied by the syslog sender
  thread. Instead we only drop the oldest data from the buffer when we're
  writing to it and there's not enough free space in it.
  Advantages: We drop old data rather than the most recent data when the buffer
  is full. The "syslog" KDL command has more data available now. So the odds
  are that kernel syslog messages not written to disk yet are at least still
  in the kernel buffer.
* Changed dprintf_no_syslog() semantics: Now it writes to the syslog, but
  doesn't notify the syslog sender thread.

boot loader:
* Added the ring_buffer implementation and a dummy user_memcpy().
* bios_x86: Moved the syslog stuff from serial.{cpp,h} to debug.{cpp.h}.
* Moved the debug options from the "Select safe mode options" menu to a new
  "Select debug options" menu.
* Added option "Enable debug syslog" to the new menu (ATM available on x86
  only). It allocates a 1 MB in-memory buffer for the syslog for this session
  in such a way that it can be accessed by the boot loader after a reset.
* Added item "Display syslog from previous session" to the new menu, doing
  what its name suggests.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35816 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-11 17:46:36 +00:00
Ingo Weinhold
546f4e5e05 * Added create_ring_buffer_etc() which allows to re-create a ring buffer from
a given flat buffer.
* Added ring_buffer_peek() for random position reading from the ring buffer
  without changing its state.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35813 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-11 17:12:21 +00:00
Ingo Weinhold
73a72c42e2 Added get_free_address_range() to get a free range in a given range array.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35801 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-10 18:36:44 +00:00
Ingo Weinhold
d40a935560 Boot loader (x86 mmu.cpp):
* Made the page table allocation more flexible. Got rid of sMaxVirtualAddress
  and added new virtual_end address to the architecture specific kernel args.
* Increased the virtual space we reserve for the kernel to 16 MB. That
  should suffice for quite a while. The previous 2 MB were too tight when
  building the kernel with debug info.
* mmu_init(): The way we were translating the BIOS' extended memory map to
  our physical ranges arrays was broken. Small gaps between usable memory
  ranges would be ignored and instead marked allocated. This worked fine for
  the boot loader and during the early kernel initialization, but after the
  VM has been fully set up it frees all physical ranges that have not been
  claimed otherwise. So those ranges could be entered into the free pages
  list and would be used later. This could possibly cause all kinds of weird
  problems, probably including ACPI issues. Now we add only the actually
  usable ranges to our list.

Kernel:
* vm_page_init(): The pages of the ranges between the usable physical memory
  ranges are now marked PAGE_STATE_UNUSED, the allocated ranges
  PAGE_STATE_WIRED.
* unmap_and_free_physical_pages(): Don't free pages marked as unused.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35726 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-03-02 18:13:06 +00:00
Ingo Weinhold
8b3d3d8a15 Correctly handle cases when a thread single-steps into the kernel as it can
happen on syscalls or "int" instructions. The debug exception handler sets
the thread debug flags B_THREAD_DEBUG_STOP and
B_THREAD_DEBUG_NOTIFY_SINGLE_STEP (new) and lets the thread continue. Before
leaving the kernel the thread is stopped and a single-step notification is
sent. Fixes #3487.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35620 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-25 20:20:16 +00:00
Ingo Weinhold
464d9f1252 Changed object_depot_store() return value to void. It is now always takes
over ownership of the object. Fixes double free introduced in r35605.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35608 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-24 19:04:41 +00:00
Axel Dörfler
ff59ce680d * The low resource handler now empties the cache depot's magazines; before,
they were never freed unless the cache was destroyed (I just wondered why
  my system would bury >1G in the magazines).
* Made the magazine capacity variable per cache, ie. for larger objects, it's
  not a good idea to have 64*CPU buffers lying around in the worst case.
* Furthermore, the create_object_cache_etc()/object_depot_init() now have
  arguments for the magazine capacity as well as the maximum number of full
  unused magazines.
* By default, you might want to initialize both to zero, as then some hopefully
  usable defaults are computed. Otherwise (the only current example is the
  vm_page_mapping cache) you can just put in the values you'd want there.
  The page mapping cache uses larger values, as its objects are usually
  allocated and deleted in larger chunks.
* Beware, though, I couldn't test these changes yet as Qemu didn't like to run
  today. I'll test these changes on another machine now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35601 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-24 14:43:20 +00:00
Ingo Weinhold
bd7645a12a * Made vm_page::state private and added accessor methods.
* Added kernel tracing for page state transitions.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35538 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-20 15:57:44 +00:00
Ingo Weinhold
8b522fcfe6 Changed ASSERT_[ALWAYS_]PRINT() to add the additional output to the panic()
message instead of printing it before calling panic().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35536 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-20 14:19:52 +00:00
Ingo Weinhold
d36b9aef3e Added vm_page::IsMapped() for convenience.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35531 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-02-20 12:29:42 +00:00