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/*
* 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>
#ifdef _THREAD_SAFE
#include <pthread.h>
#include "pthread_private.h"
int
_libc_msync(addr, len, flags)
void *addr;
size_t len;
int flags;
{
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.
*/
/* This is a cancellation point: */
_thread_enter_cancellation_point();
ret = _thread_sys_msync(addr, len, flags);
/* No longer in a cancellation point: */
_thread_leave_cancellation_point();
return (ret);
}
__weak_reference(_libc_msync, msync);
#endif
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