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541 Commits

Author SHA1 Message Date
davidxu
c0f6b35a3a - Reduce function call overhead for uncontended case. 
- Remove unused flags MUTEX_FLAGS_* and their code.
- Check validity of the timeout parameter in mutex_self_lock().
 2008-05-29 07:57:33 +00:00
imp
b9242ed45b Commit missing mips libthr support that I thought I'd committed earlier 2008-05-11 05:54:52 +00:00
davidxu
fc58e99cef Remove libc_r's remnant code. 2008-05-06 07:27:11 +00:00
davidxu
0e9d39ae8f Use UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE to save 
time in kernel(avoid VM lookup).
 2008-04-29 03:58:18 +00:00
kris
4a87c82b19 Increase the default MUTEX_ADAPTIVE_SPINS to 2000, after further 
testing it turns out 200 was too short to give good adaptive
performance.

Reviewed by:   jeff
MFC after:     1 week
 2008-04-26 13:19:07 +00:00
imp
92f18b23d5 Bring in mips threads support from perforce mips2-jnpr branch. 2008-04-26 12:17:57 +00:00
delphij
6b7d752076 Avoid various shadowed variables. libthr is now almost WARNS=4 clean except 
for some const dequalifiers that needs more careful investigation.

Ok'ed by:	davidxu
 2008-04-23 21:06:51 +00:00
davidxu
b794176bc5 Use native rwlock. 2008-04-22 06:44:11 +00:00
davidxu
6a349c6771 _vfork is not in libthr, remove the reference. 2008-04-16 03:19:11 +00:00
davidxu
a1371575f4 don't include pthread_np.h, it is not used. 2008-04-14 08:08:40 +00:00
davidxu
8d9f007088 put THR_CRITICAL_LEAVE into do .. while statement. 2008-04-03 02:47:35 +00:00
davidxu
2d5bf7e6fc add __hidden suffix to _umtx_op_err, this eliminates PLT. 2008-04-03 02:13:51 +00:00
davidxu
f1df18eb48 Non-portable functions are in pthread_np.h, fix compiling problem. 2008-04-02 11:41:12 +00:00
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
0f0375e36a Remove options MK_LIBKSE and DEFAULT_THREAD_LIB now that we no longer 
build libkse.  This should fix WITHOUT_LIBTHR builds as a side effect.
 2008-03-29 17:44:40 +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
b118d117f4 Add more cpu affinity function's symbols. 2008-03-05 06:56:35 +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
obrien
d3499a87ee style.Makefile(5) 2008-02-13 05:25:43 +00:00
obrien
d8f894d961 style(9) 2008-02-13 05:12:05 +00:00
des
ddda03a2e0 Yet another pointy hat: when I zapped FBSDprivate_1.1, I forgot to move 
its contents to FBSDprivate_1.0.
 2008-02-06 20:45:46 +00:00
des
f006d1f25a Remove unnecessary prototype. 2008-02-06 20:43:19 +00:00
des
3086491df6 Convert pthread.map to the format expected by version_gen.awk, and modify 
the Makefile accordingly; libthr now explicitly uses libc's Versions.def.

MFC after:	2 weeks
 2008-02-06 20:25:00 +00:00
des
85a226c62d Remove incorrectly added FBSDprivate_1.1 namespace, and move symbols which 
are new in FreeBSD 8 to the appropriate namespace.
 2008-02-06 20:20:29 +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
9acb5351ab SYSTEM_SCOPE_ONLY flag is no longer needed, it is the only mode libthr 
supports.
 2008-01-18 04:29:36 +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
6a4c1655fd Remove warning level and aliasing restrictions. 2007-11-21 05:29:57 +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
jb
5582e69034 These are the things that the tinderbox has problems with because it 
doesn't use the default CFLAGS which contain -fno-strict-aliasing.

Until the code is cleaned up, just add -fno-strict-aliasing to the
CFLAGS of these for the tinderboxes' sake, allowing the rest of the
tree to have -Werror enabled again.
 2007-11-20 02:07:30 +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
davidxu
674cdbbcee Don't do adaptive spinning if it is running on UP kernel. 2007-10-31 01:44:50 +00:00
davidxu
e199852bb6 Restore revision 1.55, the kris's adaptive mutex type. 2007-10-31 01:37:13 +00:00
kris
9e91eb96b8 Adaptive mutexes should have the same deadlock detection properties that 
default (errorcheck) mutexes do.

Noticed by:          davidxu
 2007-10-30 09:24:23 +00:00
davidxu
97a20b1db7 Add my recent work of adaptive spin mutex code. Use two environments variable 
to tune pthread mutex performance:
1. LIBPTHREAD_SPINLOOPS
	If a pthread mutex is being locked by another thread, this environment
	variable sets total number of spin loops before the current thread
	sleeps in kernel, this saves a syscall overhead if the mutex will be
	unlocked very soon (well written application code).
2. LIBPTHREAD_YIELDLOOPS
	If a pthread mutex is being locked by other threads, this environment
	variable sets total number of sched_yield() loops before the currrent
	thread sleeps in kernel. if a pthread mutex is locked, the current thread
	gives up cpu, but will not sleep in kernel, this means, current thread
	does not set contention bit in mutex, but let lock owner to run again
	if the owner is on kernel's run queue, and when lock owner unlocks the
	mutex, it does not need to enter kernel and do lots of work to resume
	mutex waiters, in some cases, this saves lots of syscall overheads for
	mutex owner.

In my practice, sometimes LIBPTHREAD_YIELDLOOPS can massively improve performance
than LIBPTHREAD_SPINLOOPS, this depends on application. These two environments
are global to all pthread mutex, there is no interface to set them for each
pthread mutex, the default values are zero, this means spinning is turned off
by default.
 2007-10-30 05:57:37 +00:00
kris
bbfd76f872 Add a new "non-portable" mutex type, PTHREAD_MUTEX_ADAPTIVE_NP. This 
is also implemented in glibc and is used by a number of existing
applications (mysql, firefox, etc).

This mutex type is a default mutex with the additional property that
it spins briefly when attempting to acquire a contested lock, doing
trylock operations in userland before entering the kernel to block if
eventually unsuccessful.

The expectation is that applications requesting this mutex type know
that the mutex is likely to be only held for very brief periods, so it
is faster to spin in userland and probably succeed in acquiring the
mutex, than to enter the kernel and sleep, only to be woken up almost
immediately.  This can help significantly in certain cases when
pthread mutexes are heavily contended and held for brief durations
(such as mysql).

Spin up to 200 times before entering the kernel, which represents only
a few us on modern CPUs.  No performance degradation was observed with
this value and it is sufficient to avoid a large performance drop in
mysql performance in the heavily contended pthread mutex case.

The libkse implementation is a NOP.

Reviewed by:      jeff
MFC after:        3 days
 2007-10-29 21:01:47 +00:00
ru
8ea97e9ef7 - Stop calling libthr alternative as it's now the default 
threading library.

- Now that libpthread is a symlink, it's no longer possible
  to link applications with libpthread and have libmap.conf(5)
  select the desired threading library; applications will be
  linked to the default threading library, libkse or libthr.
  Remove an obsolete paragraph.

- Mention that improvements can be seen compared to libkse.

Reviewed by:	deischen, davidxu
 2007-10-22 10:13:38 +00:00
davidxu
5523a9bb34 Use macro THR_CLEANUP_PUSH/POP, they are cheaper than pthread_cleanup_push/pop. 2007-10-16 07:46:15 +00:00
davidxu
38b01da7d2 Reverse the logic of UP and SMP. 
Submitted by: jasone
 2007-10-16 07:36:02 +00:00
obrien
a1598920aa Tweak the handling of "WITHOUT_LIBPTHREAD". Also remove the accidental 
treatment of 'LIBKSE' as an "old style" knob.

Submitted by:	ru
Approved by:	re(kensmith)
 2007-10-09 23:31:11 +00:00
ru
08a6766d3a Always install libpthread.* symlinks if at least one of 
the threading libraries is built.  This simplifies the
logic in makefiles that need to check if the pthreads
support is present.  It also fixes a bug where we would
build a threading library that we shouldn't have built:
for example, building with WITHOUT_LIBTHR and the default
value of DEFAULT_THREADING_LIB (libthr) would mistakenly
build the libthr library, but not install it.

Approved by:	re (kensmith)
 2007-10-01 18:29:55 +00:00
davidxu
52bd1282cd Output error message to STDERR_FILENO. 
Approved by: re (bmah)
 2007-08-07 04:50:14 +00:00
davidxu
abf8c6f8db Set warning level to 2. 2007-06-08 02:21:13 +00:00
deischen
ff36458e08 Bump library versions in preparation for 7.0. 
Ok'd by:	kan
 2007-05-21 02:49:08 +00:00
ru
3be5d73f3d Fix a logic bug I re-introduced in my patch I sent to Daniel 
that would cause the selected shared threading library to be
overwritten with its 32-bit version on amd64.

PR:		amd64/112509
 2007-05-18 12:25:48 +00:00
deischen
7d5de3a8a3 Allow DEFAULT_THREAD_LIB to be set from /etc/src.conf. 
Submitted by:	ru
 2007-05-17 04:54:35 +00:00
deischen
bf3a79274d Enable symbol versioning by default. Use WITHOUT_SYMVER to disable it. 
Warning, after symbol versioning is enabled, going back is not easy
(use WITHOUT_SYMVER at your own risk).

Change the default thread library to libthr.

There most likely still needs to be a version bump for at least the
thread libraries.  If necessary, this will happen later.
 2007-05-13 14:12:40 +00:00
davidxu
d97c4f1e52 backout experimental adaptive spinning mutex for product use. 2007-05-09 08:39:33 +00:00
deischen
2a7306fdc5 Use C comments since we now preprocess these files with CPP. 2007-04-29 14:05:22 +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
ru
815d860c2f - When building world WITHOUT_LIBPTHREAD, link libthr to libpthread. 
- Don't build ngctl(8) and cached(8) if threading libs aren't built.
- Fix various issues in a cached(8) makefile.
 2006-11-26 14:36:34 +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
marcel
d21513035e Stylize: avoid using a global register variable. 2006-09-01 21:01:11 +00:00
marcel
2d71eb396a Rename TLS_TP_OFFSET back to TP_OFFSET. The former clashes with rtld. 2006-09-01 06:36:00 +00:00
marcel
1125db3243 Stylize. 2006-09-01 06:15:00 +00:00
marcel
6a1762d589 Stylize. 2006-08-31 23:31:18 +00:00
marcel
5ffd88a18e TLS fixes: 
o  The TLS pointer (r2) points 0x7000 after the *end* of the TCB.
o  _rtld_allocate_tls() gets a pointer to the current TCB, not the
   current TLS pointer.
o  _rtld_free_tls() gets the size of the TCB structure.
 2006-08-31 19:16:47 +00:00
marcel
c088f26c25 Fix harmless bug: sizeof(tcb) equals sizeof(void*) not sizeof(struct tcb). 
The argument is (currently) not used by _rtld_free_tls().
 2006-08-31 19:06:30 +00:00
marcel
4736b1fdce o Set TP using inline assembly to avoid dead code elimination. 
o  Eliminate _tcb.
 2006-08-30 03:31:32 +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
ru
4d582ffe09 Remove alpha left-overs. 2006-08-22 08:03:01 +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
f53e1c9383 __error could be called too early before libthr is initialized, test 
this case and return global varible errno instead.
 2006-07-12 03:44:05 +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
975a6925fe Add symbol versions: FBSD_1.0 and FBSDprivate. 2006-05-11 07:02:52 +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
ru
450f399135 Install shared libpthread library into /lib; needed by some 
/sbin programs.
 2006-04-12 19:42:20 +00:00
davidxu
7d0c23506c Do not check validity of timeout if a mutex can be acquired immediately. 
Completly drop recursive mutex in pthread_cond_wait and restore recursive
after resumption. Reorganize code to make gcc to generate better code.
 2006-04-08 13:24:44 +00:00
davidxu
f921934131 Remove declaration of _thr_initial from MD header file, it is no longer 
needed.
 2006-04-04 03:35:26 +00:00
davidxu
8bff50a485 Simplify _get_curthread() and _tcb_ctor because libc and rtld now 
already allocate thread pointer space in tls block for initial thread.
Only i386 and amd64 have been done, others still have to be tested.
 2006-04-04 03:26:06 +00:00
davidxu
31f2b819c6 WARNS level 4 cleanup. 2006-04-04 02:57:49 +00:00
des
5438ed2ce6 Fix prototype mismatch. 2006-03-28 21:46:55 +00:00
davidxu
255936645e Remove priority mutex code because it does not work correctly, 
to make it work, turnstile like mechanism to support priority
propagating and other realtime scheduling options in kernel
should be available to userland mutex, for the moment, I just
want to make libthr be simple and efficient thread library.

Discussed with: deischen, julian
 2006-03-27 23:50:21 +00:00
davidxu
4b5909711d Comment out -g compiler option, found by 'FreeBSD Build Options Survey'. 2006-03-27 05:58:58 +00:00
davidxu
32673f0256 Check cancellation state carefully to see we really need to call 
_pthread_testcancel(). Preserve errno in _thr_suspend_check().
 2006-03-26 01:57:03 +00:00
davidxu
2926ddf5d1 Don't cancel thread if it is in critical region. 2006-03-25 07:03:13 +00:00
davidxu
679e2338c0 Only wake up writer if the lock is free. 2006-03-25 05:14:21 +00:00
davidxu
cba4d932c1 Compile thr_rtld.c 2006-03-25 05:00:54 +00:00
davidxu
6ee36bbb6d Add locking support for rtld. 2006-03-25 04:49:07 +00:00
davidxu
eb9bdb4259 set an upper limit for thread structures which can be allocated. 2006-03-24 04:34:06 +00:00
davidxu
020594940d Set default contention scope to system. 2006-03-20 03:14:14 +00:00
ru
5f8b6d3c5a Convert NO_PROFILE and NO_LIB32 to new style. 2006-03-18 21:37:05 +00:00
davidxu
d119bdaa7a Remove mqueue and timer, now they are in librt. 2006-03-08 23:47:04 +00:00
deischen
e586a0042e Add some more pthread stubs so that librt can use them. 
The thread jump table has been resorted, so you need to
keep libc, libpthread, and libthr in sync.

Submitted by:	xu
 2006-03-05 18:10:28 +00:00
davidxu
6fdf2b7d81 Reimplement mutex_init to get rid of compile warning. 2006-02-28 06:06:19 +00:00
davidxu
bb43155dbb Disable POSIX SIGEV_THREAD notification support, soon we will have a common 
library which can be reused both for libthr and libpthread.
 2006-02-22 02:52:22 +00:00
davidxu
91fda076fb Read cycle count before sending signal, this fixes a userland thread 
suspension bug.

MFC after: 3 days
 2006-02-20 09:02:40 +00:00
davidxu
70ea4e1323 Rework last change of pthread_once, create a function _thr_once_init to 
reinitialize its internal locks.
 2006-02-15 23:05:03 +00:00
davidxu
44a8ce5006 After fork(), reinitialize internal locks for pthread_once(). 2006-02-15 13:41:02 +00:00
davidxu
08b1c5c928 Now, thread name is stored in kernel, userland no longer has to keep it. 2006-02-05 03:04:54 +00:00
davidxu
118990614c use syscall thr_set_name to implement pthread_set_name_np. 2006-02-05 02:26:17 +00:00
davidxu
3172ccca0f Add missing symbol pthread_set_name_np. 2006-01-23 06:11:23 +00:00
davidxu
97a1cdabb8 Eliminate unused code. 2006-01-16 05:33:48 +00:00
davidxu
aedf24a684 Enable mutex inheritance code in mutex_fork, I forgot to turn on it. 
while here, add some comments about process shared mutex.
 2006-01-14 11:33:43 +00:00
jasone
e30d92806f Increase the number of spinlocks, since libc's malloc implementation is 
about to significantly increase the number of spinlocks used.

Approved by:	markm (mentor)
 2006-01-13 06:14:04 +00:00
jasone
3668a2e494 In preparation for a new malloc implementation: 
* Add posix_memalign().

  * Move calloc() from calloc.c to malloc.c.  Add a calloc() implementation in
    rtld-elf in order to make the loader happy (even though calloc() isn't
    used in rtld-elf).

  * Add _malloc_prefork() and _malloc_postfork(), and use them instead of
    directly manipulating __malloc_lock.

Approved by:	phk, markm (mentor)
 2006-01-12 07:28:21 +00:00
davidxu
84187b477c The thr_new sysscall was already in libc, don't generate it. 2006-01-11 06:10:05 +00:00
davidxu
1218aa5627 Use macro STATIC_LIB_REQUIRE to declare a symbol should be linked into 
static binary.
 2006-01-10 04:53:03 +00:00
davidxu
36bb818343 Rescue pthread_set_name_np for compatible reason, remove unused code. 2006-01-09 08:07:22 +00:00
davidxu
8798f9bcec Tweak macro THR_LOCK_RELEASE a bit for non-PTHREAD_INVARIANTS case. 2006-01-09 07:32:22 +00:00
davidxu
db9594be6e Return real detached state. 2006-01-09 03:59:51 +00:00
davidxu
6f27a53b6f Fix a bug recently introduced, the _thread_active_count should be 
decreased if thread can not be created.
 2006-01-08 10:13:18 +00:00
davidxu
d1f7b6d605 Allow background threads to be suspended. 2006-01-08 01:49:31 +00:00
davidxu
4c4f339838 Try to reduce total time needed for suspending all threads, 
first broadcast signals to all threads, then enter a wait loop.
 2006-01-08 01:48:51 +00:00
davidxu
f04292bb19 Remove functions i386_get_gsbase and i386_set_gsbase, they were already 
in libc.
 2006-01-07 06:01:43 +00:00
davidxu
d6c88c0f27 Refine thread suspension code, now thread suspension is a blockable 
operation, the caller is blocked util target threads are really
suspended, also avoid suspending a thread when it is holding a
critical lock.
Fix a bug in _thr_ref_delete which tests a never set flag.
 2006-01-05 13:51:22 +00:00
davidxu
45180066f9 1. Add SIGEV_THREAD notification for mq_notify. 
2. Reuse current timer code and abstract some common code to
   to support both timer and mqueue.
 2006-01-04 11:48:02 +00:00
davidxu
46ad9344c2 Remove in-progress wait code to sync with libpthread's behavior. 2006-01-03 13:30:23 +00:00
davidxu
2d34e45c94 Let _mutex_cv_lock call internal functiona mutex_lock_common. 2005-12-21 05:14:07 +00:00
davidxu
5ac55e9c46 Hide umtx API symbols as well. 2005-12-21 03:53:29 +00:00
davidxu
8d9e23fb51 1. Retire macro SCLASS, instead simply use language keyword and 
put variables in thr_init.c.
2. Hide all global symbols which won't be exported.
 2005-12-21 03:14:06 +00:00
davidxu
3e60ee73cb Follow the mistake in libpthread, the first version name in libpthread 
is LIBTHREAD_1_0, but really it should be LIBPTHREAD_1_0.
Fix it so libmap.conf works again (it was broken by recent versioning
code in rtld_elf).
 2005-12-21 02:34:20 +00:00
davidxu
a8cc7e07c2 Clear return code to zero if joiner successfully waited joinee. 
Bug reported by: jasone at connonware when using ports lang/onyx
MFC after: 3 days
 2005-12-19 03:20:55 +00:00
davidxu
272f64aa70 Update copyright. 2005-12-17 09:42:45 +00:00
davidxu
7bdde27518 Remove unused _get_curthread() call. 2005-12-12 07:14:57 +00:00
davidxu
ae161ac239 Fix name compatible problem with POSIX standard. the sigval_ptr and 
sigval_int really should be sival_ptr and sival_int.
Also sigev_notify_function accepts a union sigval value but not a
pointer.
 2005-11-04 09:41:00 +00:00