src/lib/libkse/thread/thr_exit.c, branch release/7.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2008-02-24T05:45:17+00:00

'RELENG_7_0_0_RELEASE'.

This commit was manufactured to restore the state of the 7.0-RELEASE image.

Remove 3rd clause, renumber, ok per email

2007-01-12T07:26:21+00:00

Add compatibility symbol maps. libpthread (.so.1 and .so.2)

2006-03-13T00:59:51+00:00

used LIBTHREAD_1_0 as its version definition, but now needs
to define its symbols in the same namespace used by libc.
The compatibility hooks allows you to use libraries and
binaries built and linked to libpthread before libc was
built with symbol versioning.  The shims can be removed if
libpthread is given a version bump.

Reviewed by:	davidxu

Check unhandled signals before thread marks itself as DEAD,

2004-10-23T23:37:54+00:00

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

2004-08-12T12:12:12+00:00

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

2004-08-07T15:15:38+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

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.

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

2003-09-14T22:52:16+00:00

   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

2003-08-18T04:03:08+00:00

pthread_exit in main() without creating any thread.

Tessted by: deischen

Attempt to eliminate PLT relocations from rwlock aquire/release

2003-05-30T00:21:52+00:00

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)