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-rw-r--r--pthreads/pthread_mutex_init.c104
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+/*
+ * pthread_mutex_init.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
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+
+int
+pthread_mutex_init (pthread_mutex_t * mutex, const pthread_mutexattr_t * attr)
+{
+ int result = 0;
+ pthread_mutex_t mx;
+
+ if (mutex == NULL)
+ {
+ return EINVAL;
+ }
+
+ if (attr != NULL
+ && *attr != NULL && (*attr)->pshared == PTHREAD_PROCESS_SHARED)
+ {
+ /*
+ * Creating mutex that can be shared between
+ * processes.
+ */
+#if _POSIX_THREAD_PROCESS_SHARED >= 0
+
+ /*
+ * Not implemented yet.
+ */
+
+#error ERROR [__FILE__, line __LINE__]: Process shared mutexes are not supported yet.
+
+#else
+
+ return ENOSYS;
+
+#endif /* _POSIX_THREAD_PROCESS_SHARED */
+
+ }
+
+ mx = (pthread_mutex_t) calloc (1, sizeof (*mx));
+
+ if (mx == NULL)
+ {
+ result = ENOMEM;
+ }
+ else
+ {
+ mx->lock_idx = 0;
+ mx->recursive_count = 0;
+ mx->kind = (attr == NULL || *attr == NULL
+ ? PTHREAD_MUTEX_DEFAULT : (*attr)->kind);
+ mx->ownerThread.p = NULL;
+
+ mx->event = CreateEvent (NULL, PTW32_FALSE, /* manual reset = No */
+ PTW32_FALSE, /* initial state = not signaled */
+ NULL); /* event name */
+
+ if (0 == mx->event)
+ {
+ result = ENOSPC;
+ free (mx);
+ mx = NULL;
+ }
+ }
+
+ *mutex = mx;
+
+ return (result);
+}