diff options
Diffstat (limited to 'lib/libpthread/uthread/uthread_msync.c')
| -rw-r--r-- | lib/libpthread/uthread/uthread_msync.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/libpthread/uthread/uthread_msync.c b/lib/libpthread/uthread/uthread_msync.c new file mode 100644 index 00000000000..246cdde7226 --- /dev/null +++ b/lib/libpthread/uthread/uthread_msync.c @@ -0,0 +1,32 @@ +/* + * David Leonard <d@openbsd.org>, 1999. Public Domain. + * + * $OpenBSD: uthread_msync.c,v 1.1 1999/01/17 23:43:18 d Exp $ + */ + +#include <sys/types.h> +#include <sys/mman.h> +#ifdef _THREAD_SAFE +#include <pthread.h> +#include "pthread_private.h" + +int +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. + */ + _thread_enter_cancellation_point(); + ret = _thread_sys_msync(addr, len, flags); + _thread_leave_cancellation_point(); + return (ret); +} +#endif |