freebsd-skq/lib/libkse/thread/thr_msync.c
deischen 5d56aa9cb2 Revamp libpthread so that it has a chance of working in an SMP
environment.  This includes support for multiple KSEs and KSEGs.

The ability to create more than 1 KSE via pthread_setconcurrency()
is in the works as well as support for PTHREAD_SCOPE_SYSTEM threads.
Those should come shortly.

There are still some known issues which davidxu and I are working
on, but it'll make it easier for us by committing what we have.

This library now passes all of the ACE tests that libc_r passes
with the exception of one.  It also seems to work OK with KDE
including konqueror, kwrite, etc.  I haven't been able to get
mozilla to run due to lack of java plugin, so I'd be interested
to see how it works with that.

Reviewed by:	davidxu
2003-04-18 05:04:16 +00:00

34 lines
768 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_enter_cancellation_point(curthread);
ret = __sys_msync(addr, len, flags);
_thr_leave_cancellation_point(curthread);
return ret;
}