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/libpthread/thread/thr_kill.c b/lib/libpthread/thread/thr_kill.c
index 4bf1761..7a24ffb 100644
--- a/lib/libpthread/thread/thr_kill.c
+++ b/lib/libpthread/thread/thr_kill.c
@@ -33,12 +33,13 @@
  */
 #include <errno.h>
 #include <signal.h>
-#ifdef _THREAD_SAFE
 #include <pthread.h>
 #include "pthread_private.h"
 
+#pragma weak	pthread_kill=_pthread_kill
+
 int
-pthread_kill(pthread_t pthread, int sig)
+_pthread_kill(pthread_t pthread, int sig)
 {
 	int ret;
 
@@ -71,4 +72,3 @@ pthread_kill(pthread_t pthread, int sig)
 	/* Return the completion status: */
 	return (ret);
 }
-#endif