src-test2/lib/libpthread/thread/thr_exit.c, branch release/6.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2005-11-03T00:35:26Z

'RELENG_6_0_0_RELEASE'. This commit was manufactured to restore the state of the 6.0-RELEASE image.

Check unhandled signals before thread marks itself as DEAD,

2004-10-23T23:37:54Z

this reduces chances of signal losting problem found by Peter Holm

As long as we have a knob to force system scope threads, why not have

2004-08-12T12:12:12Z

a knob to force process scope threads. If the environment variable LIBPTHREAD_PROCESS_SCOPE is set, force all threads to be process scope threads regardless of how the application creates them. If LIBPTHREAD_SYSTEM_SCOPE is set (forcing system scope threads), it overrides LIBPTHREAD_PROCESS_SCOPE. $ # To force system scope threads $ LIBPTHREAD_SYSTEM_SCOPE=anything threaded_app $ # To force process scope threads $ LIBPTHREAD_PROCESS_SCOPE=anything threaded_app

Add a way to force 1:1 mode for libpthread. To do this, define

2004-08-07T15:15:38Z

LIBPTHREAD_SYSTEM_SCOPE in the environment. You can still force libpthread to be built in strictly 1:1 by adding -DSYSTEM_SCOPE_ONLY to CFLAGS. This is kept for archs that don't yet support M:N mode. Requested by: rwatson Reviewed by: davidxu

Add code to support thread debugging.

2004-07-13T22:49:58Z

1. Add global varible _libkse_debug, debugger uses the varible to identify libpthread. when the varible is written to non-zero by debugger, libpthread will take some special action at context switch time, it will check TMDF_DOTRUNUSER flags, if a thread has the flags set by debugger, it won't be scheduled, when a thread leaves KSE critical region, thread checks the flag, if it was set, the thread relinquish CPU. 2. Add pq_first_debug to select a thread allowd to run by debugger. 3. Some names prefixed with _thr are renamed to _thread prefix. which is allowed to run by debugger.

1. Allocating and freeing lock related resource in _thr_alloc and _thr_free

2003-09-14T22:52:16Z

to avoid potential memory leak, also fix a bug in pthread_create, contention scope should be inherited when PTHREAD_INHERIT_SCHED is set, and also check right field for PTHREAD_INHERIT_SCHED, scheduling inherit flag is in sched_inherit. 2. Execute hooks registered by atexit() on thread stack but not on scheduler stack. 3. Simplify some code in _kse_single_thread by calling xxx_destroy functions. Reviewed by: deischen

Direct call exit if thread was never created. This makes it safe to call

2003-08-18T04:03:08Z

pthread_exit in main() without creating any thread. Tessted by: deischen

Attempt to eliminate PLT relocations from rwlock aquire/release

2003-05-30T00:21:52Z

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)

Add a method of yielding the current thread with the scheduler

2003-05-16T19:58:30Z

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)

o Don't add a scope system thread's KSE to the list of available

2003-04-28T23:56:12Z

KSEs when it's thread exits; allow the GC handler to do that. o Make spinlock/spinlock critical regions. The following were submitted by davidxu o Alow thr_switch() to take a null mailbox argument. o Better protect cancellation checks. o Don't set KSE specific data when creating new KSEs; rely on the first upcall of the KSE to set it. o Add the ability to set the maximum concurrency level and do this automatically. We should have a way to enable/disable this with some sort of tunable because some applications may not want this to be the default. o Hold the scheduling lock across thread switch calls. o If scheduling of a thread fails, make sure to remove it from the list of active threads. o Better protect accesses to a joining threads when the target thread is exited and detached. o Remove some macro definitions that are now provided by . o Don't leave the library in threaded mode if creation of the initial KSE fails. o Wakeup idle KSEs when there are threads ready to run. o Maintain the number of threads active in the priority queue.