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* Repo copy libpthreads to libkse.David E. O'Brien2007-10-094-512/+0
| | | | | | | | | This introduces the WITHOUT_LIBKSE nob, and changes WITHOUT_LIBPTHREADS to mean with neither threading libs. Approved by: re(kensmith) Notes: svn path=/head/; revision=172492
* Add compatibility symbol maps. libpthread (.so.1 and .so.2)Daniel Eischen2006-03-131-0/+2
| | | | | | | | | | | | | | used LIBTHREAD_1_0 as its version definition, but now needs to define its symbols in the same namespace used by libc. The compatibility hooks allows you to use libraries and binaries built and linked to libpthread before libc was built with symbol versioning. The shims can be removed if libpthread is given a version bump. Reviewed by: davidxu Notes: svn path=/head/; revision=156611
* Catch up with the atomic_FOO_ptr() changes and silence a few warnings.Daniel Eischen2005-07-291-7/+14
| | | | Notes: svn path=/head/; revision=148542
* Change the spin lock logic to a reasonable one. We should spin whenXin LI2005-02-271-1/+1
| | | | | | | | | | | | the lock is held by other thread, but not when nobody owns it. According to deischen@, this part of code will never be hit in our threads library, since it does not use locks without wait/wakeup functions. Spotted by: mingyanguo via ChinaUnix.net forum Reviewed by: deischen Notes: svn path=/head/; revision=142670
* Use a generic way to back threads out of wait queues when handlingDaniel Eischen2004-12-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | signals instead of having more intricate knowledge of thread state within signal handling. Simplify signal code because of above (by David Xu). Use macros for libpthread usage of pthread_cleanup_push() and pthread_cleanup_pop(). This removes some instances of malloc() and free() from the semaphore and pthread_once() implementations. When single threaded and forking(), make sure that the current thread's signal mask is inherited by the forked thread. Use private mutexes for libc and libpthread. Signals are deferred while threads hold private mutexes. This fix also breaks www/linuxpluginwrapper; a patch that fixes it is at http://people.freebsd.org/~deischen/kse/linuxpluginwrapper.diff Fix race condition in condition variables where handling a signal (pthread_kill() or kill()) may not see a wakeup (pthread_cond_signal() or pthread_cond_broadcast()). In collaboration with: davidxu Notes: svn path=/head/; revision=139023
* Add the ability to reinitialize libpthread's internal FIFO-queueingDaniel Eischen2003-11-042-15/+57
| | | | | | | | | locks. Reviewed by: davidxu Notes: svn path=/head/; revision=122074
* Only generate code for _LCK_ASSERT if _LCK_DEBUG is defined.David Xu2003-10-021-1/+6
| | | | Notes: svn path=/head/; revision=120658
* Don't assume sizeof(long) = sizeof(int) on x86; use intDaniel Eischen2003-09-032-12/+12
| | | | | | | | | | | | | | | instead of long types for low-level locks. Add prototypes for some internal libc functions that are wrapped by the library as cancellation points. Add memory barriers to alpha atomic swap functions (submitted by davidxu). Requested by: bde Notes: svn path=/head/; revision=119723
* Move the machine specific files from sys/Makefile.inc and put themMarcel Moolenaar2003-06-231-4/+2
| | | | | | | | in a machine specific makefile. While here, sort the sub-directories in Makefile and remove _atomic_lock.S from all makefiles. Notes: svn path=/head/; revision=116705
* Attempt to eliminate PLT relocations from rwlock aquire/releaseAlexander Kabaev2003-05-301-0/+1
| | | | | | | | | | | | | | path, making them suitable for direct use by the dynamic loader. Register libpthread-specific locking API with rtld on startup. This still has some rough edges with signals which should be addresses later. Approved by: re (scottl) Notes: svn path=/head/; revision=115399
* Change low-level locking a bit so that we can tell ifDaniel Eischen2003-05-242-23/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | a lock is being waitied on. Fix a races in join and cancellation. When trying to wait on a CV and the library is not yet threaded, make it threaded so that waiting actually works. When trying to nanosleep() and we're not threaded, just call the system call nanosleep instead of adding the thread to the wait queue. Clean up adding/removing new threads to the "all threads queue", assigning them unique ids, and tracking how many active threads there are. Do it all when the thread is added to the scheduling queue instead of making pthread_create() know how to do it. Fix a race where a thread could be marked for signal delivery but it could be exited before we actually add the signal to it. Other minor cleanups and bug fixes. Submitted by: davidxu Approved by: re@ (blanket for libpthread) Notes: svn path=/head/; revision=115278
* Add a method of yielding the current thread with the schedulerDaniel Eischen2003-05-162-29/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | lock held (_thr_sched_switch_unlocked()) and use this to avoid dropping the scheduler lock and having the scheduler retake the same lock again. Add a better way of detecting if a low-level lock is in use. When switching out a thread due to blocking in the UTS, don't switch to the KSE's scheduler stack only to switch back to another thread. If possible switch to the new thread directly from the old thread and avoid the overhead of the extra context switch. Check for pending signals on a thread when entering the scheduler and add them to the threads signal frame. This includes some other minor signal fixes. Most of this was a joint effor between davidxu and myself. Reviewed by: davidxu Approved by: re@ (blanket for libpthread) Notes: svn path=/head/; revision=115080
* Protect against a race between granting a lock and accessingDaniel Eischen2003-05-042-7/+28
| | | | | | | | | other parts of the lock. Submitted by: davidxu Notes: svn path=/head/; revision=114680
* Protect thread errno from being changed while operatingDaniel Eischen2003-04-231-1/+5
| | | | | | | | | | | on behalf of the KSE. Add a kse_reinit function to reinitialize a reused KSE. Submitted by: davidxu Notes: svn path=/head/; revision=113942
* Sorry folks; I accidentally committed a patch from what I was workingDaniel Eischen2003-04-182-2/+2
| | | | | | | | | on a couple of days ago. This should be the most recent changes. Noticed by: davidxu Notes: svn path=/head/; revision=113661
* Add FIFO queueing locking operations based on atomic swap.Daniel Eischen2003-04-184-7/+370
| | | | | | | | | Modify thread errno for the new libpthread changes. Reviewed by: davidxu Notes: svn path=/head/; revision=113657
* remove #ifdef _THREAD_SAFEMax Khon2003-01-241-2/+0
| | | | Notes: svn path=/head/; revision=109772
* Use KSE to schedule threads.Jonathan Mini2002-10-301-2/+1
| | | | Notes: svn path=/head/; revision=106191
* Make the changes needed for libpthread to compile in its new home.Jonathan Mini2002-09-162-3/+3
| | | | | | | | | | | The new libpthread will provide POSIX threading support using KSE. These files were previously repo-copied from src/lib/libc_r. Reviewed by: deischen Approved by: -arch Notes: svn path=/head/; revision=103388
* $Id$ -> $FreeBSD$Peter Wemm1999-08-282-2/+2
| | | | Notes: svn path=/head/; revision=50476
* Add RCS IDs to those files without them.Daniel Eischen1999-08-051-0/+1
| | | | | | | | | | Fix copyrights (s/REGENTS/AUTHOR). Suggested by: tg Approved by: jb Notes: svn path=/head/; revision=49439
* Change the name of this source file so that libc_r builds it insteadJohn Birrell1998-04-302-2/+52
| | | | | | | | | of the one in libc that contains the weak symbol for __error. FreeBSD's make accumulates paths to the point that it can find *anything*, possibly including the car keys. Notes: svn path=/head/; revision=35538
* Add spinlock.John Birrell1998-04-291-3/+4
| | | | Notes: svn path=/head/; revision=35510
* Use libc makefiles from now on instead of duplicating them in libc_r.John Birrell1997-05-031-128/+3
| | | | | | | Added Id strings too. It's useful to know who last made a change. Notes: svn path=/head/; revision=25402
* Sync with libc.Alexander Langer1996-12-291-1/+1
| | | | | | | Submitted by: John Birrell <jb@cimlogic.com.au> Notes: svn path=/head/; revision=21004
* Submitted by: john birell (jb@cimlogic.com.au)Julian Elischer1996-08-221-20/+20
| | | | | | | | fixups for makefiles and for Thread-safe sycalls Notes: svn path=/head/; revision=17769
* Submitted by: John Birrell <cimaxp1!jb@werple.net.au>Julian Elischer1996-08-201-12/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here are the diffs for libc_r to get it one step closer to P1003.1c These make most of the thread/mutex/condvar structures opaque to the user. There are three functions which have been renamed with _np suffixes because they are extensions to P1003.1c (I did them for JAVA, which needs to suspend/resume threads and also start threads suspended). I've created a new header (pthread_np.h) for the non-POSIX stuff. The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented doesn't work. I think its best to delete it. I don't think libc_r needs tags anyway, 'cause most of the source is in libc which does have tags. also: Here's the first batch of man pages for the thread functions. The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was inherited from /usr/src/lib/libc/Makefile that should only be done with libc. also: I should have sent this diff with the pthread(3) man page. It allows people to type make -DWANT_LIBC_R world to get libc_r built with the rest of the world. I put this in the pthread(3) man page. The default is still not to build libc_r. also: The diff attached adds a pthread(3) man page to /usr/src/share/man/man3. The idea is that without libc_r installed, this man page will give people enough info to know that they have to build libc_r. Notes: svn path=/head/; revision=17706
* ``mv'' -> ``mv -f''Wolfram Schneider1996-05-071-6/+7
| | | | | | | | ``rm'' -> ``rm -f'' so mv/rm may not ask for confirmation if you are not root Notes: svn path=/head/; revision=15679
* Sync libc_r with libc changes..Peter Wemm1996-05-051-3/+3
| | | | Notes: svn path=/head/; revision=15635
* Reviewed by: julianJulian Elischer1996-01-221-0/+107
Submitted by: john birrel One version of the pthreads library another will follow with differnt actions under some cases.. not QUITE complete Notes: svn path=/head/; revision=13546
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