diff options
Diffstat (limited to 'pthreads/pthread_detach.c')
| -rw-r--r-- | pthreads/pthread_detach.c | 280 |
1 files changed, 141 insertions, 139 deletions
diff --git a/pthreads/pthread_detach.c b/pthreads/pthread_detach.c index 00fb6adfb..a3c3ef973 100644 --- a/pthreads/pthread_detach.c +++ b/pthreads/pthread_detach.c @@ -1,139 +1,141 @@ -/* - * 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. - */ -#include <signal.h> - - -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.
+ */
+#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 */
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