Rename _thr_enter_cancellation_point to _thr_cancel_enter, rename

_thr_leave_cancellation_point to _thr_cancel_leave, add a parameter
to _thr_cancel_leave to indicate whether cancellation point should be
checked, this gives us an option to not check cancallation point if
a syscall successfully returns to avoid any leaks, current I have
creat(), open() and fcntl(F_DUPFD) to not check cancellation point
after they sucessfully returned.

Replace some members in structure kse with bit flags to same some
memory.

Conditionally compile THR_ASSERT to nothing if _PTHREAD_INVARIANTS is
not defined.

Inline some small functions in thr_cancel.c.

Use __predict_false in thr_kern.c for some executed only once code.

Reviewd by: deischen

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/libpthread/thread/thr_sem.c b/lib/libpthread/thread/thr_sem.c
index d6021a8..c7f6308 100644
--- a/lib/libpthread/thread/thr_sem.c
+++ b/lib/libpthread/thread/thr_sem.c
@@ -169,7 +169,7 @@ _sem_wait(sem_t *sem)
 	struct pthread *curthread = _get_curthread();
 	int		retval;
 
-	_thr_enter_cancellation_point(curthread);
+	_thr_cancel_enter(curthread);
 	
 	_SEM_CHECK_VALIDITY(sem);
 
@@ -186,7 +186,7 @@ _sem_wait(sem_t *sem)
 
 	retval = 0;
   RETURN:
-	_thr_leave_cancellation_point(curthread);
+	_thr_cancel_leave(curthread, 1);
 	return (retval);
 }