src/lib/libpthread/thread/thr_init.c, branch release/5.3.0_cvs

This commit was manufactured by cvs2svn to create tag

2004-11-04T19:12:42+00:00

'RELENG_5_3_0_RELEASE'.

This commit was manufactured to restore the state of the 5.3-RELEASE image.

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

If _libkse_debug is not zero, activate thread mode.

2004-07-13T22:51:03+00:00

Remove surplus mmap() call for stack guard page in init_private, it is done

2003-11-29T14:10:02+00:00

in init_main_thread. Also don't initialize lock and lockuser again for initial
thread, it is already done by _thr_alloc().

Reviewed by: deischen
Approved by: re (scottl)

Add an implementation for pthread_atfork().

2003-11-04T20:04:45+00:00

Aside from the POSIX requirements for pthread_atfork(), when
fork()ing, take the malloc lock to keep malloc state consistent
in the child.

Reviewed by:	davidxu

Treat initial thread as scope system thread when KSE mode is not activated

2003-08-18T03:58:29+00:00

yet, so we can protect some locking code from being interrupted by signal
handling. When KSE mode is turned on, reset the thread flag to scope process
except we are running in 1:1 mode which we needn't turn it off.
Also remove some unused member variables in structure kse.

Tested by: deischen

Initialize rtld lock just before turning on thread mode and

2003-08-10T22:30:20+00:00

uninitialize rtld lock after thread mode shutdown.

Rethink the MD interfaces for libpthread to account for

2003-08-05T22:46:00+00:00

archs that can (or are required to) have per-thread registers.

Tested on i386, amd64; marcel is testing on ia64 and will
have some follow-up commits.

Reviewed by:	davidxu

o Eliminate upcall for PTHREAD_SYSTEM_SCOPE thread, now it

2003-07-17T23:02:30+00:00

  is system bound thread and when it is blocked, no upcall is generated.

o Add ability to libkse to allow it run in pure 1:1 threading mode,
  defining SYSTEM_SCOPE_ONLY in Makefile can turn on this option.

o Eliminate code for installing dummy signal handler for sigwait call.

o Add hash table to find thread.

Reviewed by: deischen