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-rw-r--r--pthreads/pthread_mutex_lock.c278
1 files changed, 139 insertions, 139 deletions
diff --git a/pthreads/pthread_mutex_lock.c b/pthreads/pthread_mutex_lock.c
index 4ca5c252f..f15cf6ab0 100644
--- a/pthreads/pthread_mutex_lock.c
+++ b/pthreads/pthread_mutex_lock.c
@@ -1,139 +1,139 @@
-/*
- * pthread_mutex_lock.c
- *
- * Description:
- * This translation unit implements mutual exclusion (mutex) primitives.
- *
- * --------------------------------------------------------------------------
- *
- * 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
- */
-
-#ifndef _UWIN
-//# include <process.h>
-#endif
-#include "pthread.h"
-#include "implement.h"
-
-int
-pthread_mutex_lock (pthread_mutex_t * mutex)
-{
- int result = 0;
- pthread_mutex_t mx;
-
- /*
- * Let the system deal with invalid pointers.
- */
- if (*mutex == NULL)
- {
- return EINVAL;
- }
-
- /*
- * We do a quick check to see if we need to do more work
- * to initialise a static mutex. We check
- * again inside the guarded section of ptw32_mutex_check_need_init()
- * to avoid race conditions.
- */
- if (*mutex >= PTHREAD_ERRORCHECK_MUTEX_INITIALIZER)
- {
- if ((result = ptw32_mutex_check_need_init (mutex)) != 0)
- {
- return (result);
- }
- }
-
- mx = *mutex;
-
- if (mx->kind == PTHREAD_MUTEX_NORMAL)
- {
- if ((LONG) PTW32_INTERLOCKED_EXCHANGE(
- (LPLONG) &mx->lock_idx,
- (LONG) 1) != 0)
- {
- while ((LONG) PTW32_INTERLOCKED_EXCHANGE(
- (LPLONG) &mx->lock_idx,
- (LONG) -1) != 0)
- {
- if (WAIT_OBJECT_0 != WaitForSingleObject (mx->event, INFINITE))
- {
- result = EINVAL;
- break;
- }
- }
- }
- }
- else
- {
- pthread_t self = pthread_self();
-
- if ((PTW32_INTERLOCKED_LONG) PTW32_INTERLOCKED_COMPARE_EXCHANGE(
- (PTW32_INTERLOCKED_LPLONG) &mx->lock_idx,
- (PTW32_INTERLOCKED_LONG) 1,
- (PTW32_INTERLOCKED_LONG) 0) == 0)
- {
- mx->recursive_count = 1;
- mx->ownerThread = self;
- }
- else
- {
- if (pthread_equal (mx->ownerThread, self))
- {
- if (mx->kind == PTHREAD_MUTEX_RECURSIVE)
- {
- mx->recursive_count++;
- }
- else
- {
- result = EDEADLK;
- }
- }
- else
- {
- while ((LONG) PTW32_INTERLOCKED_EXCHANGE(
- (LPLONG) &mx->lock_idx,
- (LONG) -1) != 0)
- {
- if (WAIT_OBJECT_0 != WaitForSingleObject (mx->event, INFINITE))
- {
- result = EINVAL;
- break;
- }
- }
-
- if (0 == result)
- {
- mx->recursive_count = 1;
- mx->ownerThread = self;
- }
- }
- }
- }
-
- return (result);
-}
+/*
+ * pthread_mutex_lock.c
+ *
+ * Description:
+ * This translation unit implements mutual exclusion (mutex) primitives.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * 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
+ */
+
+#ifndef _UWIN
+/*# include <process.h> */
+#endif
+#include "pthread.h"
+#include "implement.h"
+
+int
+pthread_mutex_lock (pthread_mutex_t * mutex)
+{
+ int result = 0;
+ pthread_mutex_t mx;
+
+ /*
+ * Let the system deal with invalid pointers.
+ */
+ if (*mutex == NULL)
+ {
+ return EINVAL;
+ }
+
+ /*
+ * We do a quick check to see if we need to do more work
+ * to initialise a static mutex. We check
+ * again inside the guarded section of ptw32_mutex_check_need_init()
+ * to avoid race conditions.
+ */
+ if (*mutex >= PTHREAD_ERRORCHECK_MUTEX_INITIALIZER)
+ {
+ if ((result = ptw32_mutex_check_need_init (mutex)) != 0)
+ {
+ return (result);
+ }
+ }
+
+ mx = *mutex;
+
+ if (mx->kind == PTHREAD_MUTEX_NORMAL)
+ {
+ if ((LONG) PTW32_INTERLOCKED_EXCHANGE(
+ (LPLONG) &mx->lock_idx,
+ (LONG) 1) != 0)
+ {
+ while ((LONG) PTW32_INTERLOCKED_EXCHANGE(
+ (LPLONG) &mx->lock_idx,
+ (LONG) -1) != 0)
+ {
+ if (WAIT_OBJECT_0 != WaitForSingleObject (mx->event, INFINITE))
+ {
+ result = EINVAL;
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ pthread_t self = pthread_self();
+
+ if ((PTW32_INTERLOCKED_LONG) PTW32_INTERLOCKED_COMPARE_EXCHANGE(
+ (PTW32_INTERLOCKED_LPLONG) &mx->lock_idx,
+ (PTW32_INTERLOCKED_LONG) 1,
+ (PTW32_INTERLOCKED_LONG) 0) == 0)
+ {
+ mx->recursive_count = 1;
+ mx->ownerThread = self;
+ }
+ else
+ {
+ if (pthread_equal (mx->ownerThread, self))
+ {
+ if (mx->kind == PTHREAD_MUTEX_RECURSIVE)
+ {
+ mx->recursive_count++;
+ }
+ else
+ {
+ result = EDEADLK;
+ }
+ }
+ else
+ {
+ while ((LONG) PTW32_INTERLOCKED_EXCHANGE(
+ (LPLONG) &mx->lock_idx,
+ (LONG) -1) != 0)
+ {
+ if (WAIT_OBJECT_0 != WaitForSingleObject (mx->event, INFINITE))
+ {
+ result = EINVAL;
+ break;
+ }
+ }
+
+ if (0 == result)
+ {
+ mx->recursive_count = 1;
+ mx->ownerThread = self;
+ }
+ }
+ }
+ }
+
+ return (result);
+}
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