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author | marha <marha@users.sourceforge.net> | 2011-01-17 18:27:35 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2011-01-17 18:27:35 +0000 |
commit | aaa4964a2277a1e265da4e7b91d5b1e3c3faa84e (patch) | |
tree | 36dd7bf367b1932098af857b547648980325b336 /pthreads/pthread_join.c | |
parent | 9845f4671b0f731f868ea0f39844114ab0f70a3c (diff) | |
download | vcxsrv-aaa4964a2277a1e265da4e7b91d5b1e3c3faa84e.tar.gz vcxsrv-aaa4964a2277a1e265da4e7b91d5b1e3c3faa84e.tar.bz2 vcxsrv-aaa4964a2277a1e265da4e7b91d5b1e3c3faa84e.zip |
cvs update pthreads
Diffstat (limited to 'pthreads/pthread_join.c')
-rw-r--r-- | pthreads/pthread_join.c | 310 |
1 files changed, 156 insertions, 154 deletions
diff --git a/pthreads/pthread_join.c b/pthreads/pthread_join.c index 8237b6cf7..6dd394d1b 100644 --- a/pthreads/pthread_join.c +++ b/pthreads/pthread_join.c @@ -1,154 +1,156 @@ -/* - * pthread_join.c - * - * Description: - * This translation unit implements functions related to thread - * synchronisation. - * - * -------------------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors - * - * Contact Email: rpj@callisto.canberra.edu.au - * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include "pthread.h" -#include "implement.h" - -/* - * Not needed yet, but defining it should indicate clashes with build target - * environment that should be fixed. - */ -#include <signal.h> - - -int -pthread_join (pthread_t thread, void **value_ptr) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function waits for 'thread' to terminate and - * returns the thread's exit value if 'value_ptr' is not - * NULL. This also detaches the thread on successful - * completion. - * - * PARAMETERS - * thread - * an instance of pthread_t - * - * value_ptr - * pointer to an instance of pointer to void - * - * - * DESCRIPTION - * This function waits for 'thread' to terminate and - * returns the thread's exit value if 'value_ptr' is not - * NULL. This also detaches the thread on successful - * completion. - * NOTE: detached threads cannot be joined or canceled - * - * RESULTS - * 0 'thread' has completed - * EINVAL thread is not a joinable thread, - * ESRCH no thread could be found with ID 'thread', - * ENOENT thread couldn't find it's own valid handle, - * EDEADLK attempt to join thread with self - * - * ------------------------------------------------------ - */ -{ - int result; - pthread_t self; - ptw32_thread_t * tp = (ptw32_thread_t *) thread.p; - - EnterCriticalSection (&ptw32_thread_reuse_lock); - - if (NULL == tp - || thread.x != tp->ptHandle.x) - { - result = ESRCH; - } - else if (PTHREAD_CREATE_DETACHED == tp->detachState) - { - result = EINVAL; - } - else - { - result = 0; - } - - LeaveCriticalSection (&ptw32_thread_reuse_lock); - - if (result == 0) - { - /* - * The target thread is joinable and can't be reused before we join it. - */ - self = pthread_self(); - - if (NULL == self.p) - { - result = ENOENT; - } - else if (pthread_equal (self, thread)) - { - result = EDEADLK; - } - else - { - /* - * Pthread_join is a cancelation point. - * If we are canceled then our target thread must not be - * detached (destroyed). This is guarranteed because - * pthreadCancelableWait will not return if we - * are canceled. - */ - result = pthreadCancelableWait (tp->threadH); - - if (0 == result) - { - if (value_ptr != NULL) - { - *value_ptr = tp->exitStatus; - } - - /* - * The result of making multiple simultaneous calls to - * pthread_join() or pthread_detach() specifying the same - * target is undefined. - */ - result = pthread_detach (thread); - } - else - { - result = ESRCH; - } - } - } - - return (result); - -} /* pthread_join */ +/*
+ * pthread_join.c
+ *
+ * Description:
+ * This translation unit implements functions related to thread
+ * synchronisation.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+/*
+ * Not needed yet, but defining it should indicate clashes with build target
+ * environment that should be fixed.
+ */
+#ifndef WINCE
+# include <signal.h>
+#endif
+
+
+int
+pthread_join (pthread_t thread, void **value_ptr)
+ /*
+ * ------------------------------------------------------
+ * DOCPUBLIC
+ * This function waits for 'thread' to terminate and
+ * returns the thread's exit value if 'value_ptr' is not
+ * NULL. This also detaches the thread on successful
+ * completion.
+ *
+ * PARAMETERS
+ * thread
+ * an instance of pthread_t
+ *
+ * value_ptr
+ * pointer to an instance of pointer to void
+ *
+ *
+ * DESCRIPTION
+ * This function waits for 'thread' to terminate and
+ * returns the thread's exit value if 'value_ptr' is not
+ * NULL. This also detaches the thread on successful
+ * completion.
+ * NOTE: detached threads cannot be joined or canceled
+ *
+ * RESULTS
+ * 0 'thread' has completed
+ * EINVAL thread is not a joinable thread,
+ * ESRCH no thread could be found with ID 'thread',
+ * ENOENT thread couldn't find it's own valid handle,
+ * EDEADLK attempt to join thread with self
+ *
+ * ------------------------------------------------------
+ */
+{
+ int result;
+ pthread_t self;
+ ptw32_thread_t * tp = (ptw32_thread_t *) thread.p;
+
+ EnterCriticalSection (&ptw32_thread_reuse_lock);
+
+ if (NULL == tp
+ || thread.x != tp->ptHandle.x)
+ {
+ result = ESRCH;
+ }
+ else if (PTHREAD_CREATE_DETACHED == tp->detachState)
+ {
+ result = EINVAL;
+ }
+ else
+ {
+ result = 0;
+ }
+
+ LeaveCriticalSection (&ptw32_thread_reuse_lock);
+
+ if (result == 0)
+ {
+ /*
+ * The target thread is joinable and can't be reused before we join it.
+ */
+ self = pthread_self();
+
+ if (NULL == self.p)
+ {
+ result = ENOENT;
+ }
+ else if (pthread_equal (self, thread))
+ {
+ result = EDEADLK;
+ }
+ else
+ {
+ /*
+ * Pthread_join is a cancelation point.
+ * If we are canceled then our target thread must not be
+ * detached (destroyed). This is guarranteed because
+ * pthreadCancelableWait will not return if we
+ * are canceled.
+ */
+ result = pthreadCancelableWait (tp->threadH);
+
+ if (0 == result)
+ {
+ if (value_ptr != NULL)
+ {
+ *value_ptr = tp->exitStatus;
+ }
+
+ /*
+ * The result of making multiple simultaneous calls to
+ * pthread_join() or pthread_detach() specifying the same
+ * target is undefined.
+ */
+ result = pthread_detach (thread);
+ }
+ else
+ {
+ result = ESRCH;
+ }
+ }
+ }
+
+ return (result);
+
+} /* pthread_join */
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