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authormarha <marha@users.sourceforge.net>2011-07-18 10:33:05 +0200
committermarha <marha@users.sourceforge.net>2011-07-18 10:33:05 +0200
commit88101146f2ec7d53ffb793e365f05097ffd35fd3 (patch)
treedb77eef572a00c62c8d9485c4786f682e20a2fd0 /pthreads/pthread_detach.c
parent772373ccc8da2b2019555228f4972cc0c5a885a4 (diff)
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cvs version of pthreads
Diffstat (limited to 'pthreads/pthread_detach.c')
-rw-r--r--pthreads/pthread_detach.c277
1 files changed, 136 insertions, 141 deletions
diff --git a/pthreads/pthread_detach.c b/pthreads/pthread_detach.c
index a3c3ef973..9ff6587f3 100644
--- a/pthreads/pthread_detach.c
+++ b/pthreads/pthread_detach.c
@@ -1,141 +1,136 @@
-/*
- * pthread_detach.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_detach (pthread_t thread)
- /*
- * ------------------------------------------------------
- * DOCPUBLIC
- * This function detaches the given thread.
- *
- * PARAMETERS
- * thread
- * an instance of a pthread_t
- *
- *
- * DESCRIPTION
- * This function detaches the given thread. You may use it to
- * detach the main thread or to detach a joinable thread.
- * NOTE: detached threads cannot be joined;
- * storage is freed immediately on termination.
- *
- * RESULTS
- * 0 successfully detached the thread,
- * EINVAL thread is not a joinable thread,
- * ENOSPC a required resource has been exhausted,
- * ESRCH no thread could be found for 'thread',
- *
- * ------------------------------------------------------
- */
-{
- int result;
- BOOL destroyIt = PTW32_FALSE;
- 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
- {
- /*
- * Joinable ptw32_thread_t structs are not scavenged until
- * a join or detach is done. The thread may have exited already,
- * but all of the state and locks etc are still there.
- */
- result = 0;
-
- if (pthread_mutex_lock (&tp->cancelLock) == 0)
- {
- if (tp->state != PThreadStateLast)
- {
- tp->detachState = PTHREAD_CREATE_DETACHED;
- }
- else if (tp->detachState != PTHREAD_CREATE_DETACHED)
- {
- /*
- * Thread is joinable and has exited or is exiting.
- */
- destroyIt = PTW32_TRUE;
- }
- (void) pthread_mutex_unlock (&tp->cancelLock);
- }
- else
- {
- /* cancelLock shouldn't fail, but if it does ... */
- result = ESRCH;
- }
- }
-
- LeaveCriticalSection (&ptw32_thread_reuse_lock);
-
- if (result == 0)
- {
- /* Thread is joinable */
-
- if (destroyIt)
- {
- /* The thread has exited or is exiting but has not been joined or
- * detached. Need to wait in case it's still exiting.
- */
- (void) WaitForSingleObject(tp->threadH, INFINITE);
- ptw32_threadDestroy (thread);
- }
- }
-
- return (result);
-
-} /* pthread_detach */
+/*
+ * pthread_detach.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.
+ */
+#if !defined(WINCE)
+# include <signal.h>
+#endif
+
+
+int
+pthread_detach (pthread_t thread)
+ /*
+ * ------------------------------------------------------
+ * DOCPUBLIC
+ * This function detaches the given thread.
+ *
+ * PARAMETERS
+ * thread
+ * an instance of a pthread_t
+ *
+ *
+ * DESCRIPTION
+ * This function detaches the given thread. You may use it to
+ * detach the main thread or to detach a joinable thread.
+ * NOTE: detached threads cannot be joined;
+ * storage is freed immediately on termination.
+ *
+ * RESULTS
+ * 0 successfully detached the thread,
+ * EINVAL thread is not a joinable thread,
+ * ENOSPC a required resource has been exhausted,
+ * ESRCH no thread could be found for 'thread',
+ *
+ * ------------------------------------------------------
+ */
+{
+ int result;
+ BOOL destroyIt = PTW32_FALSE;
+ ptw32_thread_t * tp = (ptw32_thread_t *) thread.p;
+ ptw32_mcs_local_node_t node;
+
+ ptw32_mcs_lock_acquire(&ptw32_thread_reuse_lock, &node);
+
+ if (NULL == tp
+ || thread.x != tp->ptHandle.x)
+ {
+ result = ESRCH;
+ }
+ else if (PTHREAD_CREATE_DETACHED == tp->detachState)
+ {
+ result = EINVAL;
+ }
+ else
+ {
+ ptw32_mcs_local_node_t stateLock;
+ /*
+ * Joinable ptw32_thread_t structs are not scavenged until
+ * a join or detach is done. The thread may have exited already,
+ * but all of the state and locks etc are still there.
+ */
+ result = 0;
+
+ ptw32_mcs_lock_acquire (&tp->stateLock, &stateLock);
+ if (tp->state != PThreadStateLast)
+ {
+ tp->detachState = PTHREAD_CREATE_DETACHED;
+ }
+ else if (tp->detachState != PTHREAD_CREATE_DETACHED)
+ {
+ /*
+ * Thread is joinable and has exited or is exiting.
+ */
+ destroyIt = PTW32_TRUE;
+ }
+ ptw32_mcs_lock_release (&stateLock);
+ }
+
+ ptw32_mcs_lock_release(&node);
+
+ if (result == 0)
+ {
+ /* Thread is joinable */
+
+ if (destroyIt)
+ {
+ /* The thread has exited or is exiting but has not been joined or
+ * detached. Need to wait in case it's still exiting.
+ */
+ (void) WaitForSingleObject(tp->threadH, INFINITE);
+ ptw32_threadDestroy (thread);
+ }
+ }
+
+ return (result);
+
+} /* pthread_detach */