Commit Graph

1444 Commits

Author SHA1 Message Date
Ingo Weinhold
b538ceb816 Added dup_foreign_fd() to duplicate a FD from another team.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29468 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-11 00:57:17 +00:00
Ingo Weinhold
2d4fb82c0f Added TableSize(), CountElements(), and Clear() methods.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29428 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-07 21:19:15 +00:00
Ingo Weinhold
a7edf1f7c0 Moved RECURSIVE_LOCK_HOLDER() macro to the header and fixed it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29407 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-05 23:15:15 +00:00
Ingo Weinhold
5ecc4b3775 * Introduced ref-counting for the I/O contexts.
* The I/O context related vfs_*() functions have io_context* instead of void*
  parameters/return values, now.
* vfs_new_io_context(): Lock the parent I/O context before getting its table
  size. Otherwise the table size could change until we do.
* vfs_resize_fd_table(): Fixed use of MutexLocker. We created only a temporary
  object, not one with function scope.
* Renamed load_image_etc() to load_image_internal() and added a parameter for
  specifying the parent team of the one to create.
* Introduced a kernel private load_image_etc() with a few more arguments than
  load_image().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29375 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-02 00:26:22 +00:00
François Revol
595d8a3b9c Fix for gcc4 build. Thx Monni.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29340 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-27 22:44:05 +00:00
Ingo Weinhold
42ef52132a Made usable from userland.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29335 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-27 16:11:57 +00:00
Ingo Weinhold
e1975d3353 * When a team debugger is installed automatically, the thread causing that is
stored now.
* Extended the debugger message for B_DEBUGGER_MESSAGE_HANDED_OVER by the
  causing thread.
* Also send B_DEBUGGER_MESSAGE_HANDED_OVER to the debugger to which the team
  was handed over. The message will be the very first one the debugger gets
  from the team in question.
* Some harmless refactoring (added thread_hit_serious_debug_event()).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29302 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-23 22:59:45 +00:00
Michael Lotz
6eba063647 * Added simplified possibility to schedule UHCI transfers from within KDL.
* Added debugger commands to resolve usb_ids to pipes.
* Adjusted the physical memory allocator to be usable in a slimmed down mode
  when running inside the kernel debugger.
* Implemented USB keyboard support for KDL through a kernel debugger add-on.
* Added kgetc() and made use of it where previously individual methods were used
  to ensure that reading characters always goes through the kernel debugger
  add-ons and the other methods.

This has some preconditions to meet though:
1) The keyboard must be in the boot protocol (currently the case but needs to
   be revisited once we have a full usb_hid).
2) The keyboard must be attached to a UHCI root port (i.e. not use EHCI or OHCI,
   also not through hubs unless those are USB 1.1).
3) the usb_hid driver has to be opened for this to work. This means that for the
   time between initializing USB and when usb_hid is opened by the input_server
   there is no keyboard support.

Also note that this has no way of detecting hot-plug, meaning that you can't
re-attach your USB keyboard from the hub to the root port once in KDL.

On the bright side of things, since this is a non-destructive mechanism it is
possible to enter and leave KDL without loosing the USB state.

Tested OK in QEMU, not tested on real hardware yet, will see in a few minutes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29291 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-22 20:46:27 +00:00
Michael Lotz
3684e40bb8 * Introduce a (private) flag B_NO_HANDLED_INFO for install_io_interrupt_handler.
It causes the interrupt handler to be inserted at the very end of the list
  instead of at the top. It is intended to be used as a workaround when a
  interrupt handler cannot know if it actually handled the interrupt. This
  should never be used by native drivers. Also if we know that the result is
  not valid because of this flag we won't disable the vector in case we count
  many unhandled interrupts as those numbers are then unreliable.
* Moved B_NO_LOCK_VECTOR to be a private flag as well.
* Made the interrupt handler list a simple manually maintaned singly linked list
  instead of the doubly linked one used with insque and remque as it greatly
  simplifies things for such an easy use case and is more compact.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29241 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-17 21:41:51 +00:00
Michael Lotz
c33667d400 Fixing warnings under GCC4 in preparation to enable -Werror there as well:
* Replaced the use of offsetof() for structs that aren't PODs. Add a
  offset_of_member() macro to util/khash.h because that's what it's used for
  in our cases.
* Change the signature of add_debugger_command()/remove_debugger_command() on
  GCC > 2 to avoid the depricated conversion from string constants to char *.
* Adding some "suggested" parenthesis. I know that not everyone likes that, but
  it pointed out at least one bug that is fixed here as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29113 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-01 20:48:02 +00:00
Axel Dörfler
2c1e463c7e * Removed B_{MIN|MAX}_PRIORITY from OS.h - they were never really intended
as public defines. They are now called THREAD_{MIN|MAX}_SET_PRIORITY to
  better reflect what they are for. Minimum priority is now 1, ie. you no
  longer can set another thread to the idle priority. This fixes part of
  ticket #2959.
* set_thread_priority() will no longer allow to change the priority of the
  idle thread to something else. This fixes the rest of ticket #2959.
* Automatic whitespace cleanup in OS.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28521 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-05 18:11:58 +00:00
Ingo Weinhold
56eb43e3ca * Made kernel_cpp.h usable in the runtime loader.
* Added new(mynothrow) operators which avoid clashes when also linking
  against libgcc.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28474 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-03 13:15:12 +00:00
François Revol
9da2356857 Work in progress to pass the image extents to the kernel,
- code is disabled yet as the bootloader doesn't have add_boot_item.. will need to pass via kernel args
- add a GetFileMap() method to the vfs, and implement it in FAT code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28445 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-01 20:39:14 +00:00
François Revol
ebb7d4466e add header & (c)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28444 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-01 20:33:39 +00:00
Ingo Weinhold
9a42ad7a77 When switching to a kernel thread we no longer set the page directory.
This is not necessary, since userland teams' page directories also
contain the kernel mappings, and avoids unnecessary TLB flushes. To make
that possible the vm_translation_map_arch_info objects are reference
counted now.

This optimization reduces the kernel time of the Haiku build on my
machine with SMP disabled a few percent, but interestingly the total
time decreases only marginally. Haven't tested with SMP yet, but for
full impact CPU affinity would be needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28287 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 15:12:32 +00:00
Ingo Weinhold
412319e8eb * Use a singly linked list for the deferred free entries.
* Added deferred_delete() that takes a DeferredDeletable and deletes it
  asynchronously.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28285 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 14:46:20 +00:00
Ingo Weinhold
63a9f18f31 Added MoveFrom().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28284 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 14:43:46 +00:00
François Revol
d4dcbf95f6 - Fix build.
- make system_time() return something sensible until platform code works.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28271 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-21 21:23:55 +00:00
Ingo Weinhold
53892c92a0 * Replaced scheduler_remove_from_run_queue() by
scheduler_set_thread_priority(). Setting the thread priority was the
  only situation in which it was used.
* Renamed scheduler.cpp to scheduler_simple.cpp.
* The scheduler functions are no longer called directly. Instead there's
  an operation vector now, which is initialized at kernel init time.
  This allows for picking the most suitable scheduler for the machine
  (e.g. a non-SMP scheduler on a non-SMP machine).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28262 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-21 12:37:13 +00:00
Ingo Weinhold
59dbd26f5f * Moved more debug macros to kernel_debug_config.h.
* Turned the checks for all those macros to "#if"s instead of "#ifdef"s.
* Introduced macro KDEBUG_LEVEL which serves as a master setting.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28248 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 14:24:46 +00:00
Ingo Weinhold
1894a0a98b Consistently use KDEBUG. It is always defined and therefore must be
checked with "#if".


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28247 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 13:06:04 +00:00
Ingo Weinhold
47c40a10a1 * Prefixed memset_physical() and memcpy_to_physical() with "vm_",
added vm_memcpy_from_physical() and vm_memcpy_physical_page(), and
  added respective functions to the vm_translation_map operations. The
  architecture specific implementation can now decide how to implement
  them most efficiently. Added generic implementations that can be used,
  though.
* Changed vm_{get,put}_physical_page(). The former no longer accepts
  flags (the only flag PHYSICAL_PAGE_DONT_WAIT wasn't needed anymore).
  Instead it returns an implementation-specific handle that has to be
  passed to the latter. Added vm_{get,put}_physical_page_current_cpu()
  and *_debug() variants, that work only for the current CPU,
  respectively when in the kernel debugger. Also adjusted the
  vm_translation_map operations accordingly.
* Made consequent use of the physical memory operations in the source
  tree.
* Also adjusted the m68k and ppc implementations with respect to the
  vm_translation_map operation changes, but they are probably broken,
  nevertheless.
* For x86 the generic physical page mapper isn't used anymore. It is
  suboptimal in any case. For systems with small memory it is too much
  overhead, since one can just map the complete physical memory (that's
  not done yet, though). For systems with large memory it counteracts
  the VM strategy to reuse the least recently used pages. Since those
  pages will most likely not be mapped by the page mapper anymore, it
  will keep remapping chunks. This was also the reason why building
  Haiku in Haiku was significantly faster with only 256 MB RAM (since
  that much could be kept mapped all the time).
  Now we're using a different strategy: We have small pools of virtual
  page slots per CPU that are used for the physical page operations
  (memset_physical(), memcpy_*_physical()) with CPU-pinned thread.
  Furthermore we have four slots per translation map, which are used to
  map page tables.

These changes speed up the Haiku image build in Haiku significantly. On
my Core2 Duo 2.2 GHz 2 GB machine about 40% to 20 min 40 s (KDEBUG
disabled, block cache debug disabled). Still more than factor 3 slower
than FreeBSD and Linux, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28244 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 00:06:09 +00:00
Ingo Weinhold
7ab39de989 * Removed unused SMP_MSG_RESCHEDULE ICI message.
* Introduced flag "invoke_scheduler" in the per CPU structure. It is
  evaluated in hardware_interrupt() (x86 only ATM).
* Introduced SMP_MSG_RESCHEDULE_IF_IDLE message, which enters the
  scheduler when the CPU currently runs an idle thread.
* Don't do dprintf() "CPU x halted!" when handling a SMP_MSG_CPU_HALT
  ICI message. It uses nested spinlocks and could thus potentially
  deadlock itself (acquire_spinlock() processes ICI messages, so it
  could already hold one of the locks). This is a pretty likely scenario
  on machines with more than two CPUs, but is also possible when the
  panic()ing thread holds the threads spinlock. Probably fixes #2572.
* Reworked the way the kernel debugger is entered and added a "cpu"
  command that allows switching the CPU once in KDL. It is thus possible
  to get a stack trace of the thread not on the panic()ing CPU.
* When a thread is added to the run queue, we do now check, if another
  CPU is idle and ask it to reschedule, if it is. Before this change, the
  CPU was continuing to idle until the quantum of the idle thread
  expired. Speeds up the libbe.so build about 8% on my machine (haven't
  tested the full Haiku image build yet).
* When spinlock debugging is enabled (DEBUG_SPINLOCKS) we also record
  the spinlock acquirer on non-smp machines. Added "spinlock" debugger
  command to get the info.
* Added debugger commands "ici" and "ici_message", printing info on
  pending ICI message respectively on a given one.
* Process not only a single ICI message in acquire_spinlock() and other
  places, but all pending ones.
* Also process ICI messages when waiting for a free one -- avoids a
  potential deadlock.
* Mask out non-existing CPUs in send_multicast_ici(). panic() instead of
  just returning when there's no target CPU left.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28223 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 18:14:08 +00:00
Ingo Weinhold
78c90d44ca Moved definition of the PAUSE macro to <cpu.h>, respectively
<arch/cpu.h>.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28221 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 16:53:31 +00:00
Ingo Weinhold
901f1930e1 * Moved memset_physical() to vm.cpp and made it available in the kernel.
* Added memcpy_to_physical().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28219 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 16:32:12 +00:00
Michael Lotz
f7de7fa4e3 Add throw() to the nogrow new operator. This will cause the right version to be
used that handles NULL returns and doesn't expect an exception. This fixes that
certain constructors would still be called even if the allocation failed in low
memory situations.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28208 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 08:32:42 +00:00
Ingo Weinhold
6e595b29e3 Moved KERNEL_BREAKPOINTS to kernel_debug_config.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28197 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-16 21:43:32 +00:00
Ingo Weinhold
3b248948f2 Added ThreadCPUPinner AutoLocker class.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28196 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-16 21:41:11 +00:00
François Revol
2cf4975b4b Add FAT32 support. This allows the bootloader to find a BFS image file (currently named BEOS\IMAGE.BE) and start booting for it, until the kernel tries to mount the boot partition.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28156 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-15 23:54:04 +00:00
Michael Lotz
945a6a41ac bonefish + mmlr:
* Add possibility to restart a complete pipe through B_KDEBUG_RESTART_PIPE.
* Implement tail in the kernel debugger making use of the former.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28154 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-15 23:43:27 +00:00
François Revol
86cb5b45da - Move MFP freq to a separate header
- initialize the time_base_frequency kernel arg (should be done in the bootloader though...). We will use MFP timer to support system_time(). At least try to.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28098 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-14 18:40:45 +00:00
Axel Dörfler
38bbc95758 * Made the use of file devices more convenient and complete by adding
the methods IsFile() and GetFilePath() to BDiskDevice, and
  BDiskDeviceRoster::GetFileDeviceForPath().
* Added new syscalls to implement this functionality.
* Added new flag B_DISK_DEVICE_IS_FILE.
* Fixed wrong operator precedence assumption in the BDiskDevice class at
  several places.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28052 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 21:51:43 +00:00
François Revol
9a787d297d ADd platform hooks to read RTC. platform code should mimic the PC CMOS chip.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28035 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 13:55:57 +00:00
François Revol
7d49488b80 - cleanup
- remove dead ppc code
- add support for probing hardware registers the way linux does (early, hook with VBR to trap faults)
- detect MFPs this way.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28031 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 12:56:16 +00:00
Axel Dörfler
ddecb4a7da * Changed the way the demangle functionality works: instead of having a kernel
debugger add-on set a demangle hook, all modules under debugger/demangle/ are
  now considered demangle modules.
* Added another function to the demangle module interface that gives you access
  to the arguments.
* Implemented a demangling module for GCC2.
* The older demangling module is now called "gcc3+", but doesn't support
  getting the arguments yet.
* The "call" KDL command is now using demangling to automatically show you
  the arguments of a call from a stack crawl.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28018 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-12 23:50:41 +00:00
Ingo Weinhold
6503e5d9c6 Added functions to pin a thread to the current CPU (i.e. it will only be
scheduled on that CPU) and to avoid unscheduling it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27974 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-11 18:11:12 +00:00
Ingo Weinhold
4eaa43ac48 * Added "flags" parameter to VMCache::Read().
* Use the new VMCache::Read() flags parameter to directly read into the
  physical page in the page fault handler instead of mapping it first.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27966 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-11 07:30:44 +00:00
Ingo Weinhold
b18c9b97ae * Implemented x86 assembly version of memset().
* memset() is now available through the commpage.
* CPU modules can provide a model-optimized memset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27952 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-10 18:43:46 +00:00
Ingo Weinhold
74785e79db * Added "from" address space parameter to vm_swap_address_space()/
arch_vm_aspace_swap().
* The x86 implementation does now maintain a bit mask per
  vm_translation_map_arch_info indicating on which CPUs the address
  space is active. This allows flush_tmap() to avoid ICI for user
  address spaces when the team isn't currently running on any other CPU.
  In this context ICI is relatively expensive, particularly since we map
  most pages via vm_map_page() and therefore invoke flush_tmap() pretty
  much for every single page.
  This optimization speeds up a "hello world" compilation about 20% on
  my machine (KDEBUG turned off, freshly booted), but interestingly it
  has virtually no effect on the "-j2" haiku build time.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27912 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 21:39:19 +00:00
Ingo Weinhold
6bbe7eb8ca * smp.c -> smp.cpp
* Added smp_send_multicast_ici(), which sends the message to all CPUs
  specified via a mask.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27910 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 21:14:24 +00:00
Ingo Weinhold
dbe295f827 Moved vm_translation_map_arch_info definition to the header.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27902 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 11:49:13 +00:00
Ingo Weinhold
e43cb37bcd Moved several VM related debug settings to kernel_debug_config.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27876 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-05 13:15:04 +00:00
Ingo Weinhold
567f78895b Fully inline {disable,restore}_interrupts() and friends when including
<int.h>. Performance-wise not really significant, but gives nicer
profiling results.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27827 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-01 14:33:10 +00:00
Ingo Weinhold
f8bdc2443d Created a central place for putting kernel debug enabling macros.
Currently it only contains KDEBUG and the block cache debugging macros.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27816 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-01 11:56:44 +00:00
Ingo Weinhold
f965a969b1 Extended the profiling API. When using the variable stack trace depth
buffer format, the buffer can now also contain other events than just
stack traces. ATM these are only references to the image events
(created/deleted). Therefore we no longer have to flush the profiling
buffer after such an event, since the debugger can exactly match the
samples. Since we couldn't flush when the profiling timer hit while the
thread was in the kernel, that wasn't working that well anyway.
"profile -f" fails to translate stack trace addresses only very rarely,
now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27775 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-29 00:53:38 +00:00
Ingo Weinhold
0dc4d1e5ca Reverted r27685, r27676, r27665, and r27664, the changes related to
letting the boot loader provide full paths for the pre-loaded images.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27753 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-27 00:28:10 +00:00
Ingo Weinhold
6075e354ab * Call module_init_post_boot_device() right after the boot volume has
been mounted, before anyone could try to load any modules from it.
  Also pass it a flag whether the boot volume is where the boot loader
  pre-loaded the modules from.
* module_init_post_boot_device() changes the pre-loaded module image
  paths to normalized boot volume paths, now. Got rid of the code in
  register_preloaded_module_image() which tried something like this.
* Changed module image ref counting. A referenced module has single
  reference to its image, which is released when the module becomes
  unreferenced.
* get_module() for a reference module will not try to re-get and re-set
  the module's image anymore. That could lead to a similar module (from
  different paths) being loaded at the same time. A module from a new
  file can only be loaded when the old one has been put completely.
* Simplified B_KEEP_ALIVE module handling a bit. When the module is
  initialized, we add another reference, which we'll never free. Thus
  the module remains loaded without special handling. Removed
  module_image::keep_loaded. A B_KEEP_ALIVE module remains referenced
  and thus its image remains referenced, too.
* Removed module::file, a cached path to the module's image. An
  optimization that wouldn't work with multiple root directories for
  modules (/boot/beos/..., /boot/common/...) or when module files were
  moved. get_module() does now always search the image file, when the
  module is still unreferenced. This should be a bit slower than before,
  but I didn't notice any difference in VMware at least. If it turns out
  to be a problem we could introduce a more intelligent cache that stays
  up to date by using node monitoring.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27752 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-26 23:59:53 +00:00
Ingo Weinhold
e8d3eff968 * vfs_normalize_path() and _user_normalize_path() use a common helper
function (normalize_path()), now. There was some code duplication
  before.
* Added "bool traverseLink" parameter to vfs_normalize_path(). When
  true and the leaf component is a symlink, it will be resolved.
* KPath:
  - Added similar leaf link traversal parameter to SetTo() and
    SetPath().
  - Added Normalize().
  - Added DetachBuffer(), which returns the object's current buffer and
    unsets itself.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27751 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-26 23:30:28 +00:00
Ingo Weinhold
8a85be4636 Register the commpage as an image and its entries as symbols.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27722 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-24 14:41:42 +00:00
Ingo Weinhold
fec47a5702 Added functions elf_create_memory_image() and
elf_add_memory_image_symbol(). The former creates and registers a new
image that has not been loaded from a file. The latter adds a symbol to
its symbol table. This is mainly a debug feature, allowing to name code
or data in memory regions that aren't associated with loaded ELF
objects.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-24 14:40:24 +00:00