71679e629d
_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
34 lines
747 B
C
34 lines
747 B
C
/*
|
|
* David Leonard <d@openbsd.org>, 1999. Public Domain.
|
|
*
|
|
* $OpenBSD: uthread_msync.c,v 1.2 1999/06/09 07:16:17 d Exp $
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <pthread.h>
|
|
#include "thr_private.h"
|
|
|
|
__weak_reference(__msync, msync);
|
|
|
|
int
|
|
__msync(void *addr, size_t len, int flags)
|
|
{
|
|
struct pthread *curthread = _get_curthread();
|
|
int ret;
|
|
|
|
/*
|
|
* XXX This is quite pointless unless we know how to get the
|
|
* file descriptor associated with the memory, and lock it for
|
|
* write. The only real use of this wrapper is to guarantee
|
|
* a cancellation point, as per the standard. sigh.
|
|
*/
|
|
_thr_cancel_enter(curthread);
|
|
ret = __sys_msync(addr, len, flags);
|
|
_thr_cancel_leave(curthread, 1);
|
|
|
|
return ret;
|
|
}
|