d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
138,371 Commits 4 Branches 49 Tags 2 GiB
d00a98a4e8
Commit Graph

294 Commits

Author SHA1 Message Date
davidxu
d00a98a4e8 Add pthread_setaffinity_np and pthread_getaffinity_np to libc namespace. 2008-04-02 08:53:18 +00:00
davidxu
aa2019ec00 Remove unused functions. 2008-04-02 08:33:42 +00:00
davidxu
570834290d Replace function _umtx_op with _umtx_op_err, the later function directly 
returns errno, because errno can be mucked by user's signal handler and
most of pthread api heavily depends on errno to be correct, this change
should improve stability of the thread library.
 2008-04-02 07:41:25 +00:00
davidxu
8d50c29c72 Replace userland rwlock with a pure kernel based rwlock, the new 
implementation does not switch pointers when it resumes waiters.

Asked by: jeff
 2008-04-02 04:32:31 +00:00
davidxu
111802a962 Restore normal pthread_cond_signal path to avoid some obscure races. 2008-04-01 06:23:08 +00:00
davidxu
664ef9f365 return EAGAIN early rather than running bunch of code later, micro optimize 
static branch prediction.
 2008-04-01 00:21:49 +00:00
davidxu
220584ad61 Rewrite rwlock to user atomic operations to change rwlock state, this 
eliminates internal mutex lock contention when most rwlock operations
are read.

Orignal patch provided by: jeff
 2008-03-31 02:55:49 +00:00
ru
e8df07e5aa Compile libthr with warnings. 2008-03-25 13:28:12 +00:00
ru
e2f2131976 Fixed mis-implementation of pthread_mutex_get{spin,yield}loops_np(). 
Reviewed by:	davidxu
 2008-03-25 09:48:10 +00:00
davidxu
1423f22a4c Add POSIX pthread API pthread_getcpuclockid() to get a thread's cpu 
time clock id.
 2008-03-22 09:59:20 +00:00
davidxu
8420f5505a Resolve __error()'s PLT early so that it needs not to be resolved again, 
otherwise rwlock is recursivly called when signal happens and the __error
was never resolved before.
 2008-03-21 02:31:55 +00:00
ru
735c62ce43 pthread_mutexattr_destroy() was accidentally broken in last revision, 
unbreak it.  We should really start compiling this with warnings.
 2008-03-20 11:47:08 +00:00
davidxu
8326c06222 Preserve application code's errno in rtld locking code, it attemps to keep 
any case safe.
 2008-03-20 09:35:44 +00:00
davidxu
1bc96ca9dc Make pthread_mutexattr_settype to return error number directly and 
conformant to POSIX specification.

Bug reported by: modelnine at modelnine dt org
 2008-03-20 08:27:14 +00:00
davidxu
5e11ba1ac4 don't reduce new thread's refcount if current thread can not set cpuset 
for it, since the new thread will reduce it by itself.
 2008-03-19 09:33:07 +00:00
davidxu
a6c50de140 - Trim trailing spaces. 
- Use a different sigmask variable name to avoid confusing.
 2008-03-19 08:13:04 +00:00
davidxu
e846a1612b if passed thread pointer is equal to current thread, pass -1 to kernel 
to speed up searching.
 2008-03-19 06:38:21 +00:00
davidxu
9dbfb036ab - Copy signal mask out before THR_UNLOCK(), because THR_UNLOCK() may call 
_thr_suspend_check() which messes sigmask saved in thread structure.
- Don't suspend a thread has force_exit set.
- In pthread_exit(), if there is a suspension flag set, wake up waiting-
  thread after setting PS_DEAD, this causes waiting-thread to break loop
  in suspend_common().
 2008-03-18 02:06:51 +00:00
davidxu
3da38e35b4 Actually delete SIGCANCEL mask for suspended thread, so the signal will not 
be masked when it is resumed.
 2008-03-16 03:22:38 +00:00
davidxu
19ffe8108d If a thread is cancelled, it may have already consumed a umtx_wake, 
check waiter and semphore counter to see if we may wake up next thread.
 2008-03-11 03:26:47 +00:00
davidxu
cd00bbaa4b Fix a bug when calculating remnant size. 2008-03-06 03:24:03 +00:00
davidxu
6b41341850 Don't report death event to debugger if it is a forced exit. 2008-03-06 02:07:18 +00:00
davidxu
5f0ffdddf1 Restore code setting new thread's scheduler parameters, I was thinking 
that there might be starvations, but because we have already locked the
thread, the cpuset settings will always be done before the new thread
does real-world work.
 2008-03-06 01:59:08 +00:00
davidxu
1efa6566c1 Increase and decrease in_sigcancel_handler accordingly to avoid possible 
error caused by nested SIGCANCEL stack, it is a bit complex.
 2008-03-05 07:04:55 +00:00
davidxu
d6c532fa79 Use cpuset defined in pthread_attr for newly created thread, for now, 
we set scheduling parameters and cpu binding fully in userland, and
because default scheduling policy is SCHED_RR (time-sharing), we set
default sched_inherit to PTHREAD_SCHED_INHERIT, this saves a system
call.
 2008-03-05 07:01:20 +00:00
davidxu
adf8d28a8f Check actual size of cpuset kernel is using and define underscore version 
of API.
 2008-03-05 06:55:48 +00:00
davidxu
8ead1ed2f9 If a new thread is created, it inherits current thread's signal masks, 
however if current thread is executing cancellation handler, signal
SIGCANCEL may have already been blocked, this is unexpected, unblock the
signal in new thread if this happens.

MFC after: 1 week
 2008-03-04 04:28:59 +00:00
davidxu
e0d98325b4 Include cpuset.h, unbreak compiling. 2008-03-04 03:45:11 +00:00
davidxu
7046a9b037 implement pthread_attr_getaffinity_np and pthread_attr_setaffinity_np. 2008-03-04 03:03:24 +00:00
davidxu
f88b971008 Implement functions pthread_getaffinity_np and pthread_setaffinity_np to 
get and set thread's cpu affinity mask.
 2008-03-03 09:16:29 +00:00
des
c5334cac08 _pthread_mutex_isowned_np(): use a more reliable method; the current code 
will work in simple cases, but may fail in more complicated ones.

Reviewed by:	davidxu
 2008-02-14 12:37:58 +00:00
des
f006d1f25a Remove unnecessary prototype. 2008-02-06 20:43:19 +00:00
des
053e111aba Per discussion on -threads, rename _islocked_np() to _isowned_np(). 2008-02-06 19:34:31 +00:00
des
c089534891 After careful consideration (and a brief discussion with attilio@), change 
the semantics of pthread_mutex_islocked_np() to return true if and only if
the mutex is held by the current thread.

Obviously, change the regression test to match.

MFC after:	2 weeks
 2008-02-04 12:35:23 +00:00
des
72d185548f Add pthread_mutex_islocked_np(), a cheap way to verify that a mutex is 
locked.  This is intended primarily to support the userland equivalent
of the various *_ASSERT_LOCKED() macros we have in the kernel.

MFC after:	2 weeks
 2008-02-03 22:38:10 +00:00
davidxu
70ef09a695 sem_post() requires to return -1 on error. 2008-01-07 02:26:29 +00:00
davidxu
cbdadd6e3e call underscore version of pthread_cleanup_pop instead. 2007-12-20 04:40:12 +00:00
davidxu
cd0acadf51 Remove vfork() overloading, it is no longer needed. 2007-12-20 04:32:28 +00:00
davidxu
42e5c27a87 Add function prototypes. 2007-12-17 02:53:11 +00:00
davidxu
5340a5f502 1. Add function pthread_mutex_setspinloops_np to turn a mutex's spin 
loop count.
2. Add function pthread_mutex_setyieldloops_np to turn a mutex's yield
   loop count.
3. Make environment variables PTHREAD_SPINLOOPS and PTHREAD_YIELDLOOPS
   to be only used for turnning PTHREAD_MUTEX_ADAPTIVE_NP mutex.
 2007-12-14 06:25:57 +00:00
davidxu
50439b0991 Enclose all code for macro ENQUEUE_MUTEX in do while statement, and 
add missing brackets.

MFC: after 1 day
 2007-12-11 08:00:58 +00:00
jasone
600513aa8d Fix pointer dereferencing problems in _pthread_mutex_init_calloc_cb() that 
were obscured by pseudo-opaque pthreads API pointer casting.
 2007-11-28 00:16:24 +00:00
jasone
21bb948195 Add _pthread_mutex_init_calloc_cb() to libthr and libkse, so that malloc(3) 
(part of libc) can use pthreads mutexes without causing infinite recursion
during initialization.
 2007-11-27 03:16:44 +00:00
davidxu
e24c6a3904 Simplify code, fix a thread cancellation bug in sem_wait and sem_timedwait. 2007-11-23 05:42:52 +00:00
davidxu
df28d4b72f Reuse nwaiter member field to record number of waiters, in sem_post(), 
this should reduce the chance having to do a syscall when there is no
waiter in the semaphore.
 2007-11-21 06:01:02 +00:00
davidxu
a0922e4b91 Convert ceiling type to unsigned integer before comparing, fix compiler 
warnings.
 2007-11-21 05:25:27 +00:00
davidxu
e90ed63757 Add some function prototypes. 2007-11-21 05:23:54 +00:00
davidxu
c63688968a Remove umtx_t definition, use type long directly, add wrapper function 
_thr_umtx_wait_uint() for umtx operation UMTX_OP_WAIT_UINT, use the
function in semaphore operations, this fixed compiler warnings.
 2007-11-21 05:21:58 +00:00
marius
af79ab51ec In _pthread_key_create() ensure that libthr is initialized. This 
fixes a NULL-dereference of curthread when libstdc+ initializes
the exception handling globals on archs we can't use GNU TLS due
to lack of support in binutils 2.15 (i.e. arm and sparc64), yet,
thus making threaded C++ programs compiled with GCC 4.2.1 work
again on these archs.

Reviewed by:	davidxu
MFC after:	3 days
 2007-11-06 21:50:43 +00:00
davidxu
c01b764192 Avoid doing adaptive spinning for priority protected mutex, current 
implementation always does lock in kernel.
 2007-10-31 01:50:48 +00:00