Add weak definitions for wrapped system calls. In general:

	_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

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/libkse/thread/thr_once.c b/lib/libkse/thread/thr_once.c
index d7bb494..dde5474 100644
--- a/lib/libkse/thread/thr_once.c
+++ b/lib/libkse/thread/thr_once.c
@@ -31,12 +31,13 @@
  *
  * $FreeBSD$
  */
-#ifdef _THREAD_SAFE
 #include <pthread.h>
 #include "pthread_private.h"
 
+#pragma weak	pthread_once=_pthread_once
+
 int
-pthread_once(pthread_once_t * once_control, void (*init_routine) (void))
+_pthread_once(pthread_once_t * once_control, void (*init_routine) (void))
 {
 	if (once_control->state == PTHREAD_NEEDS_INIT) {
 		if (_thread_initial == NULL)
@@ -50,4 +51,3 @@ pthread_once(pthread_once_t * once_control, void (*init_routine) (void))
 	}
 	return (0);
 }
-#endif