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freebsd-skq/lib/libthr/thread
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Konstantin Belousov 066d836b02 Current pselect(3) is implemented in usermode and thus vulnerable to 
well-known race condition, which elimination was the reason for the
function appearance in first place. If sigmask supplied as argument to
pselect() enables a signal, the signal might be delivered before thread
called select(2), causing lost wakeup. Reimplement pselect() in kernel,
making change of sigmask and sleep atomic.

Since signal shall be delivered to the usermode, but sigmask restored,
set TDP_OLDMASK and save old mask in td_oldsigmask. The TDP_OLDMASK
should be cleared by ast() in case signal was not gelivered during
syscall execution.

Reviewed by:	davidxu
Tested by:	pho
MFC after:	1 month
2009-10-27 10:55:34 +00:00
..
Makefile.inc Add POSIX pthread API pthread_getcpuclockid() to get a thread's cpu 2008-03-22 09:59:20 +00:00
thr_affinity.c Avoid various shadowed variables. libthr is now almost WARNS=4 clean except 2008-04-23 21:06:51 +00:00
thr_atfork.c Replace internal usage of struct umtx with umutex which can supports 2006-09-06 04:04:10 +00:00
thr_attr.c Avoid various shadowed variables. libthr is now almost WARNS=4 clean except 2008-04-23 21:06:51 +00:00
thr_autoinit.c
thr_barrier.c _thr_ucond_wait drops lock, we should pick it up again. 2006-12-05 23:46:11 +00:00
thr_barrierattr.c
thr_cancel.c Tweak _thr_cancel_leave_defer a bit to fix a possible race. 2006-12-05 05:01:57 +00:00
thr_clean.c Make pthread_cleanup_push() and pthread_cleanup_pop() as a pair of macros, 2008-06-09 01:14:10 +00:00
thr_concurrency.c
thr_cond.c Remove unused functions. 2008-04-02 08:33:42 +00:00
thr_condattr.c In function pthread_condattr_getpshared, store result correctly. 2008-08-01 01:21:49 +00:00
thr_create.c Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 2008-04-29 03:58:18 +00:00
thr_detach.c
thr_equal.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_event.c Allow psaddr_t to be widened by using thr_pread_{int,long,ptr}, 2008-09-14 16:07:21 +00:00
thr_exit.c Move call to _malloc_thread_cleanup() so that if this is the last thread, 2008-09-09 17:14:32 +00:00
thr_fork.c These are some cosmetic changes to improve the clarity of libthr's fork implementation. 2009-05-11 16:45:53 +00:00
thr_getcpuclockid.c Add POSIX pthread API pthread_getcpuclockid() to get a thread's cpu 2008-03-22 09:59:20 +00:00
thr_getprio.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_getschedparam.c use rtprio_thread system call to get or set thread priority. 2006-09-21 04:21:30 +00:00
thr_info.c If a thread who's name is being set is not the current thread, use macros 2007-04-05 07:20:31 +00:00
thr_init.c - Reduce function call overhead for uncontended case. 2008-05-29 07:57:33 +00:00
thr_join.c If a thread was detached, return EINVAL instead, the error code 2006-11-28 11:05:31 +00:00
thr_kern.c use rtprio_thread system call to get or set thread priority. 2006-09-21 04:21:30 +00:00
thr_kill.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_list.c Eliminate atomic operations in thread cancellation functions, it should 2006-11-24 09:57:38 +00:00
thr_main_np.c
thr_multi_np.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_mutex.c Add two commands to _umtx_op system call to allow a simple mutex to be 2008-06-24 07:32:12 +00:00
thr_mutexattr.c pthread_mutexattr_destroy() was accidentally broken in last revision, 2008-03-20 11:47:08 +00:00
thr_once.c Eliminate global mutex by using pthread_once's state field as 2008-05-30 00:02:59 +00:00
thr_printf.c
thr_private.h Make openat(2) a cancellation point. 2009-10-11 20:19:45 +00:00
thr_pspinlock.c Reverse the logic of UP and SMP. 2007-10-16 07:36:02 +00:00
thr_resume_np.c Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 2008-04-29 03:58:18 +00:00
thr_rtld.c In the current code, rdlock_count is not correctly handled for some cases. 2009-07-06 09:31:04 +00:00
thr_rwlock.c In the current code, rdlock_count is not correctly handled for some cases. 2009-07-06 09:31:04 +00:00
thr_rwlockattr.c
thr_self.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_sem.c Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 2008-04-29 03:58:18 +00:00
thr_setprio.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_setschedparam.c use rtprio_thread system call to get or set thread priority. 2006-09-21 04:21:30 +00:00
thr_sig.c Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 2008-04-29 03:58:18 +00:00
thr_single_np.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_spec.c don't report error if key was deleted. 2009-09-25 00:15:30 +00:00
thr_spinlock.c Avoid various shadowed variables. libthr is now almost WARNS=4 clean except 2008-04-23 21:06:51 +00:00
thr_stack.c
thr_suspend_np.c Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 2008-04-29 03:58:18 +00:00
thr_switch_np.c
thr_symbols.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
thr_syscalls.c Current pselect(3) is implemented in usermode and thus vulnerable to 2009-10-27 10:55:34 +00:00
thr_umtx.c Add two commands to _umtx_op system call to allow a simple mutex to be 2008-06-24 07:32:12 +00:00
thr_umtx.h rwlock implemented from libthr need to fall through the 'hard path' and 2009-09-23 21:38:57 +00:00
thr_yield.c Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00