src/lib/libpthread/thread/thr_private.h, branch release/6.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2005-11-03T00:35:26+00:00

'RELENG_6_0_0_RELEASE'.

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

Fix off-by-one nanosecond in macro TIMESPEC_ADD.

2005-06-22T22:35:49+00:00

Reviewed by: deischen
Approved by: re (dwhite)
MFC after  : 4 days

Increase the default stacksizes:

2005-02-13T18:38:06+00:00

		32-bit		64-bit
main thread	  2MB		  4MB
other threads	  1MB		  2MB

Use a generic way to back threads out of wait queues when handling

2004-12-18T18:07:37+00:00

signals instead of having more intricate knowledge of thread state
within signal handling.

Simplify signal code because of above (by David Xu).

Use macros for libpthread usage of pthread_cleanup_push() and
pthread_cleanup_pop().  This removes some instances of malloc()
and free() from the semaphore and pthread_once() implementations.

When single threaded and forking(), make sure that the current
thread's signal mask is inherited by the forked thread.

Use private mutexes for libc and libpthread.  Signals are
deferred while threads hold private mutexes.  This fix also
breaks www/linuxpluginwrapper; a patch that fixes it is at
http://people.freebsd.org/~deischen/kse/linuxpluginwrapper.diff

Fix race condition in condition variables where handling a
signal (pthread_kill() or kill()) may not see a wakeup
(pthread_cond_signal() or pthread_cond_broadcast()).

In collaboration with:	davidxu

Save cancelflags in signal frame, this fixes a problem that

2004-11-01T10:49:34+00:00

a thread in pthread_cond_wait handled a signal can no longer
be canceled.

Reviewed by: deischen

1. Move thread list flags into new separate member, and atomically

2004-10-23T23:28:36+00:00

   put DEAD thread on GC list, this closes a race between pthread_join
   and thr_cleanup.
2. Introduce a mutex to protect tcb initialization, tls allocation and
   deallocation code in rtld seems no lock protection or it is broken,
   under stress testing, memory is corrupted.

Reviewed by: deischen
patch partly provided by: deischen

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

2004-08-07T15:15:38+00:00

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

s/TMDF_DONOTRUNUSER/TMDF_SUSPEND/g

2004-08-03T02:23:06+00:00

Dicussed with: deischen

Don't include lock.h and pthread_md.h when we're being included by

2004-07-18T04:22:01+00:00

libthread_db. Both headers are included seperately.

Add code to support thread debugging.

2004-07-13T22:49:58+00:00

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.