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e5106342c6
_foo - wrapped system call foo - weak definition to _foo and for cancellation points: _foo - wrapped system call __foo - enter cancellation point, call _foo(), leave cancellation point foo - weak definition to __foo Change use of global _thread_run to call a function to get the currently running thread. Make all pthread_foo functions weak definitions to _pthread_foo, where _pthread_foo is the implementation. This allows an application to provide its own pthread functions. Provide slightly different versions of pthread_mutex_lock and pthread_mutex_init so that we can tell the difference between a libc mutex and an application mutex. Threads holding mutexes internal to libc should never be allowed to exit, call signal handlers, or cancel. Approved by: -arch
25 lines
464 B
C
25 lines
464 B
C
/*
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* David Leonard <d@openbsd.org>, 1999. Public Domain.
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*
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* $OpenBSD: uthread_fchflags.c,v 1.1 1999/01/08 05:42:18 d Exp $
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* $FreeBSD$
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*/
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#include <sys/stat.h>
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#include <unistd.h>
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#include <pthread.h>
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#include "pthread_private.h"
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#pragma weak fchflags=_fchflags
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int
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_fchflags(int fd, u_long flags)
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{
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int ret;
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if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {
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ret = __sys_fchflags(fd, flags);
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_FD_UNLOCK(fd, FD_WRITE);
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}
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return (ret);
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}
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