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, 11 insertions, 8 deletions

diff --git a/lib/libkse/thread/thr_mutex_prioceiling.c b/lib/libkse/thread/thr_mutex_prioceiling.c
index c193c82..d19f521 100644
--- a/lib/libkse/thread/thr_mutex_prioceiling.c
+++ b/lib/libkse/thread/thr_mutex_prioceiling.c
@@ -34,12 +34,16 @@
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
-#ifdef _THREAD_SAFE
 #include <pthread.h>
 #include "pthread_private.h"
 
+#pragma weak pthread_mutexattr_getprioceiling=_pthread_mutexattr_getprioceiling
+#pragma weak pthread_mutexattr_setprioceiling=_pthread_mutexattr_setprioceiling
+#pragma weak pthread_mutex_getprioceiling=_pthread_mutex_getprioceiling
+#pragma weak pthread_mutex_setprioceiling=_pthread_mutex_setprioceiling
+
 int
-pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling)
+_pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling)
 {
 	int ret = 0;
 
@@ -54,7 +58,7 @@ pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling)
 }
 
 int
-pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling)
+_pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling)
 {
 	int ret = 0;
 
@@ -69,8 +73,8 @@ pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling)
 }
 
 int
-pthread_mutex_getprioceiling(pthread_mutex_t *mutex,
-			     int *prioceiling)
+_pthread_mutex_getprioceiling(pthread_mutex_t *mutex,
+			      int *prioceiling)
 {
 	int ret;
 
@@ -85,8 +89,8 @@ pthread_mutex_getprioceiling(pthread_mutex_t *mutex,
 }
 
 int
-pthread_mutex_setprioceiling(pthread_mutex_t *mutex,
-			     int prioceiling, int *old_ceiling)
+_pthread_mutex_setprioceiling(pthread_mutex_t *mutex,
+			      int prioceiling, int *old_ceiling)
 {
 	int ret = 0;
 
@@ -107,4 +111,3 @@ pthread_mutex_setprioceiling(pthread_mutex_t *mutex,
 	}
 	return(ret);
 }
-#endif