From e7efcb5302ff3b4faef7cf619f51a4b4a509f09a Mon Sep 17 00:00:00 2001 From: alfred Date: Sun, 28 Nov 1999 05:38:13 +0000 Subject: add pthread_cancel, obtained from OpenBSD. eischen (Daniel Eischen) added wrappers to protect against cancled threads orphaning internal resources. the cancelability code is still a bit fuzzy but works for test programs of my own, OpenBSD's and some examples from ORA's books. add readdir_r to both libc and libc_r add some 'const' attributes to function parameters Reviewed by: eischen, jasone --- lib/libpthread/thread/thr_msync.c | 40 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 lib/libpthread/thread/thr_msync.c (limited to 'lib/libpthread/thread/thr_msync.c') diff --git a/lib/libpthread/thread/thr_msync.c b/lib/libpthread/thread/thr_msync.c new file mode 100644 index 0000000..209286d --- /dev/null +++ b/lib/libpthread/thread/thr_msync.c @@ -0,0 +1,40 @@ +/* + * David Leonard , 1999. Public Domain. + * + * $OpenBSD: uthread_msync.c,v 1.2 1999/06/09 07:16:17 d Exp $ + * + * $FreeBSD$ + */ + +#include +#include +#ifdef _THREAD_SAFE +#include +#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. + */ + + /* 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); +} +#endif -- cgit v1.1