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52bd1282cd
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237 Commits

Author SHA1 Message Date
davidxu
52bd1282cd Output error message to STDERR_FILENO. 
Approved by: re (bmah)
 2007-08-07 04:50:14 +00:00
davidxu
d97c4f1e52 backout experimental adaptive spinning mutex for product use. 2007-05-09 08:39:33 +00:00
davidxu
2dd85eafce If a thread who's name is being set is not the current thread, use macros 
THR_THREAD_LOCK and THR_THREAD_UNLOCK instead, this should fix wrong
lock level problem.

Bug reported by: ed dot maste at gmail dot com
 2007-04-05 07:20:31 +00:00
imp
9109b1ceb8 Remove 3rd clause, renumber, ok per email 2007-01-12 07:26:21 +00:00
davidxu
9770c4c640 Insert mutex at tail if it has highest ceiling. 2007-01-05 03:57:11 +00:00
davidxu
dec2b546dd Oops, don't corrupt the list. 2007-01-05 03:33:47 +00:00
davidxu
190109deab Check if the PP mutex is recursive, if we have already locked it, place the 
mutex in right order sorted by priority ceiling.
 2007-01-05 03:29:15 +00:00
davidxu
d305995d66 get LIBPTHREAD_ADAPTIVE_SPIN early, so it can be used for some global 
mutexes.
 2006-12-20 05:05:44 +00:00
davidxu
e034ab54f2 Check environment variable PTHREAD_ADAPTIVE_SPIN, if it is set, use 
it as a default spin cycle count.
 2006-12-20 04:43:34 +00:00
davidxu
ca27871833 - Remove variable _thr_scope_system, all threads are system scope. 
- Rename _thr_smp_cpus to boolean variable _thr_is_smp.
- Define CPU_SPINWAIT macro for each arch, only X86 supports it.
 2006-12-15 11:52:01 +00:00
davidxu
26cbb63b3f Create inline function _thr_umutex_trylock2 to only try one atomic 
operation, if it is failed, we call syscall directly, this saves
one atomic operation per lock contention.
 2006-12-14 13:22:02 +00:00
davidxu
229aca4634 Correctly check failed syscall. 2006-12-12 05:26:39 +00:00
davidxu
fcda4340a4 Move checking for c_has_waiters into low level _thr_ucond_signal and 
_thr_ucond_broadcast, clear condition variable pointer in cancellation
info after returing from _thr_ucond_wait, since kernel has already
dropped the internal lock, so we don't need to unlock it in cancellation
handler again.
 2006-12-12 03:08:49 +00:00
davidxu
33168bd24f test cancel_pending to save a thr_wake call in some specical cases. 2006-12-06 00:15:35 +00:00
davidxu
b01e86cf0a _thr_ucond_wait drops lock, we should pick it up again. 2006-12-05 23:46:11 +00:00
davidxu
3f73376426 the c_has_waiters is lazily updated, temporarily disable the false 
alarm code.
 2006-12-05 07:23:58 +00:00
davidxu
f26900460b Use ucond to implement barrier. 2006-12-05 06:54:25 +00:00
davidxu
f1f5293365 Add _thr_ucond_init(). 2006-12-05 06:53:44 +00:00
davidxu
19c999e75f Tweak _thr_cancel_leave_defer a bit to fix a possible race. 2006-12-05 05:01:57 +00:00
davidxu
5ad129a10a Fix typo, I was using a wrong header file, and the typo is not detected 
by compiler.
 2006-12-04 14:27:42 +00:00
davidxu
cbb0fd8174 Use kernel provided userspace condition variable to implement pthread 
condition variable.
 2006-12-04 14:20:41 +00:00
davidxu
61e0842016 If a thread was detached, return EINVAL instead, the error code 
is also returned by pthread_detach() if a thread was already
detached, the error code was already documented:

>    [EINVAL]	The implementation has detected that the value speci-
>		fied by thread does not refer to a joinable thread.
 2006-11-28 11:05:31 +00:00
davidxu
add205129c Eliminate atomic operations in thread cancellation functions, it should 
reduce overheads of cancellation points.
 2006-11-24 09:57:38 +00:00
davidxu
cc0840138e Move code calculating new inherited priority into single function. 2006-11-11 13:33:47 +00:00
davidxu
e8a2970aaf Don't inherit THR_FLAGS_NEED_SUSPEND for child process, child process 
only has one thread, setting the flag can cause the thread to be
suspended and no another thread will resume it.
 2006-10-14 13:40:08 +00:00
davidxu
653013bedc o Make _thr_umutex_init a function. 
o Eliminate unused parameter for some functions.
o Convert type of first parameter to void * for _thr_umtx_wait
  and _thr_umtx_wake.
 2006-10-13 22:31:00 +00:00
davidxu
4fdad8dba6 Use type pthread_state for thread state. 2006-10-13 12:45:21 +00:00
davidxu
d2c57b7fad use rtprio_thread system call to get or set thread priority. 2006-09-21 04:21:30 +00:00
davidxu
e83ab88356 Use return value of _thr_umutex_lock instead of using zero. 2006-09-08 09:29:14 +00:00
davidxu
21e4536026 Replace internal usage of struct umtx with umutex which can supports 
real-time if we want, no functionality is changed.
 2006-09-06 04:04:10 +00:00
davidxu
567ba06917 Same as pthread_setschedparam, use sizeof(struct sched_param) instead. 2006-09-05 14:39:06 +00:00
davidxu
5b28602728 Pass correct parameter size. 2006-09-05 14:37:22 +00:00
davidxu
37473cc569 Remove unused file. 2006-08-29 13:01:23 +00:00
davidxu
faa99f1910 pthread_sigmask is in thr_sig.c, remove this file. 2006-08-28 12:29:54 +00:00
davidxu
b7dde83f82 Kill unused files. 2006-08-28 05:01:31 +00:00
davidxu
58fc7458af Use umutex APIs to implement pthread_mutex, member pp_mutexq is added 
into pthread structure to keep track of locked PTHREAD_PRIO_PROTECT mutex,
no real mutex code is changed, the mutex locking and unlocking code should
has same performance as before.
 2006-08-28 04:52:50 +00:00
davidxu
77e7cda2cf Add umutex APIs. 2006-08-28 04:47:27 +00:00
davidxu
c8a98491d0 Axe unused member field. 2006-08-08 05:04:43 +00:00
davidxu
cfa46376c7 Get number of CPUs and ignore spin count on single processor machine. 2006-08-08 04:42:41 +00:00
davidxu
5193e44c40 1. Don't override underscore version of aio_suspend(), system(), 
wait(), waitpid() and usleep(), they are internal versions and
   should not be cancellation points.
2. Make wait3() as a cancellation point.
3. Move raise() and pause() into file thr_sig.c.
4. Add functions _sigsuspend, _sigwait, _sigtimedwait and _sigwaitinfo,
   remove SIGCANCEL bit in wait-set for those functions, the signal is
   used internally to implement thread cancellation.
 2006-07-25 12:50:05 +00:00
delphij
36c285d128 Unexpand two TAILQ_FOREACH_SAFE cases. 
Ok'ed by:	davidxu
 2006-07-17 09:23:44 +00:00
davidxu
2b1dbc0acb Caching scheduling policy and priority in userland, a critical but baddly 
written application is frequently changing thread priority for SCHED_OTHER
policy.
 2006-07-13 22:45:19 +00:00
davidxu
19b8418903 Use thr_setscheduler, thr_getscheduler and thr_setschedparam to implement 
pthread functions.
 2006-07-13 06:35:43 +00:00
davidxu
ecacf536b0 Use kernel facilities to support real-time scheduling. 2006-07-12 06:13:18 +00:00
davidxu
be54fdbbff Remove unused member. 2006-06-03 00:19:40 +00:00
davidxu
523fcb36a8 Remove unused member field m_queue. 2006-06-02 08:37:01 +00:00
delphij
6e4a34202a Explicitly request pre-zeroed memory instead of memset'ing our 
own.

Ok'ed by:	davidxu
 2006-05-31 00:31:38 +00:00
davidxu
6a9d879cfe s/long/int. 2006-04-27 08:25:13 +00:00
davidxu
66d0fee031 - Use same priority range returned by kernel's sched_get_priority_min() 
and sched_get_priority_max() syscalls.
- Remove unused fields from structure pthread_attr.
 2006-04-27 08:18:23 +00:00
davidxu
8001df6f90 Remove multiple _get_curthread() calls. 2006-04-23 11:23:37 +00:00