src/lib/libpthread/thread/thr_resume_np.c, 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.

Move idle kse wakeup to outside of regions where locks are held.

2003-07-23T02:11:07+00:00

This eliminates ping-ponging of locks, where the idle KSE wakes
up only to find the lock it needs is being held.  This gives
little or no gain to M:N mode but greatly speeds up 1:1 mode.

Reviewed & Tested by:	davidxu

Fix suspend and resume.

2003-05-04T16:17:01+00:00

Submitted (in part) by:	Kazuaki Oda

Sorry folks; I accidentally committed a patch from what I was working

2003-04-18T07:09:43+00:00

on a couple of days ago.  This should be the most recent changes.

Noticed by:	davidxu

Revamp libpthread so that it has a chance of working in an SMP

2003-04-18T05:04:16+00:00

environment.  This includes support for multiple KSEs and KSEGs.

The ability to create more than 1 KSE via pthread_setconcurrency()
is in the works as well as support for PTHREAD_SCOPE_SYSTEM threads.
Those should come shortly.

There are still some known issues which davidxu and I are working
on, but it'll make it easier for us by committing what we have.

This library now passes all of the ACE tests that libc_r passes
with the exception of one.  It also seems to work OK with KDE
including konqueror, kwrite, etc.  I haven't been able to get
mozilla to run due to lack of java plugin, so I'd be interested
to see how it works with that.

Reviewed by:	davidxu

Make the changes needed for libpthread to compile in its new home.

2002-09-16T08:45:36+00:00

The new libpthread will provide POSIX threading support using KSE.
These files were previously repo-copied from src/lib/libc_r.

Reviewed by:	deischen
Approved by:	-arch

Revamp suspend and resume. While I'm here add pthread_suspend_all_np()

2002-05-24T04:32:28+00:00

and pthread_resume_all_np().  These suspend and resume all threads except
the current thread, respectively.  The existing functions pthread_single_np()
and pthread_multi_np(), which formerly had no effect, now exhibit the same
behaviour and pthread_suspend_all_np() and pthread_resume_all_np().  These
functions have been added mostly for the native java port.

Don't allow the uthread kernel pipe to use the same descriptors as
stdio.  Mostily submitted by Oswald Buddenhagen .

Correct some minor style nits.

Instead of using a join queue for each thread, use a single pointer to

2001-05-20T23:08:33+00:00

keep track of a joiner.  POSIX only supports a single joiner, so this
simplification is acceptable.

At the same time, make sure to mark a joined thread as detached so that
its resources can be freed.

Reviewed by:	deischen
PR:		24345

To be consistent, use the __weak_reference macro from

2001-04-10T04:19:21+00:00

instead of #pragma weak to create weak definitions.

Suggested by:	bde

Add weak definitions for wrapped system calls. In general:

2001-01-24T13:03:38+00:00

	_foo - wrapped system call
	foo - weak definition to _foo

and for cancellation points:

	_foo - wrapped system call
	__foo - enter cancellation point, call _foo(), leave
	        cancellation point
	foo - weak definition to __foo

Change use of global _thread_run to call a function to get the
currently running thread.

Make all pthread_foo functions weak definitions to _pthread_foo,
where _pthread_foo is the implementation.  This allows an application
to provide its own pthread functions.

Provide slightly different versions of pthread_mutex_lock and
pthread_mutex_init so that we can tell the difference between
a libc mutex and an application mutex.  Threads holding mutexes
internal to libc should never be allowed to exit, call signal
handlers, or cancel.

Approved by:	-arch