From 7350d1d3b2ec940c89a2b20f9d09985d9fd9e9d7 Mon Sep 17 00:00:00 2001 From: julian Date: Tue, 20 Aug 1996 08:22:01 +0000 Subject: Submitted by: John Birrell Here are the diffs for libc_r to get it one step closer to P1003.1c These make most of the thread/mutex/condvar structures opaque to the user. There are three functions which have been renamed with _np suffixes because they are extensions to P1003.1c (I did them for JAVA, which needs to suspend/resume threads and also start threads suspended). I've created a new header (pthread_np.h) for the non-POSIX stuff. The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented doesn't work. I think its best to delete it. I don't think libc_r needs tags anyway, 'cause most of the source is in libc which does have tags. also: Here's the first batch of man pages for the thread functions. The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was inherited from /usr/src/lib/libc/Makefile that should only be done with libc. also: I should have sent this diff with the pthread(3) man page. It allows people to type make -DWANT_LIBC_R world to get libc_r built with the rest of the world. I put this in the pthread(3) man page. The default is still not to build libc_r. also: The diff attached adds a pthread(3) man page to /usr/src/share/man/man3. The idea is that without libc_r installed, this man page will give people enough info to know that they have to build libc_r. --- lib/libkse/thread/thr_suspend_np.c | 67 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 lib/libkse/thread/thr_suspend_np.c (limited to 'lib/libkse/thread/thr_suspend_np.c') diff --git a/lib/libkse/thread/thr_suspend_np.c b/lib/libkse/thread/thr_suspend_np.c new file mode 100644 index 0000000..fb90c1d --- /dev/null +++ b/lib/libkse/thread/thr_suspend_np.c @@ -0,0 +1,67 @@ +/* + * Copyright (c) 1995 John Birrell . + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ +#include +#ifdef _THREAD_SAFE +#include +#include "pthread_private.h" + +int +pthread_suspend_np(pthread_t thread) +{ + int ret = -1; + pthread_t pthread; + /* + * Search for the thread in the linked list. + */ + for (pthread = _thread_link_list; pthread != NULL && ret == -1; pthread = pthread->nxt) { + /* Is this the thread? */ + if (pthread == thread) { + /* Found the thread. Is it running? */ + if (pthread->state != PS_RUNNING && + pthread->state != PS_SUSPENDED) { + /* The thread operation has been interrupted */ + _thread_seterrno(pthread,EINTR); + } + /* Suspend the thread. */ + pthread->state = PS_SUSPENDED; + ret = 0; + } + } + /* Check if thread was not found. */ + if (ret == -1) { + /* No such thread */ + _thread_seterrno(_thread_run,ESRCH); + } + return(ret); +} +#endif -- cgit v1.1