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_write.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'lib/libpthread/thread/thr_write.c') diff --git a/lib/libpthread/thread/thr_write.c b/lib/libpthread/thread/thr_write.c index 9292add..09b09cd 100644 --- a/lib/libpthread/thread/thr_write.c +++ b/lib/libpthread/thread/thr_write.c @@ -50,9 +50,12 @@ write(int fd, const void *buf, size_t nbytes) ssize_t num = 0; ssize_t ret; + _thread_enter_cancellation_point(); /* POSIX says to do just this: */ - if (nbytes == 0) + if (nbytes == 0) { + _thread_leave_cancellation_point(); return (0); + } /* Lock the file descriptor for write: */ if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) { @@ -64,7 +67,8 @@ write(int fd, const void *buf, size_t nbytes) /* File is not open for write: */ errno = EBADF; _FD_UNLOCK(fd, FD_WRITE); - return (-1); + _thread_leave_cancellation_point(); + return (-1); } /* Check if file operations are to block */ @@ -129,6 +133,7 @@ write(int fd, const void *buf, size_t nbytes) } _FD_UNLOCK(fd, FD_RDWR); } + _thread_leave_cancellation_point(); return (ret); } #endif -- cgit v1.1