1 files changed, 76 insertions, 0 deletions
diff --git a/lib/erl_interface/src/misc/ei_locking.h b/lib/erl_interface/src/misc/ei_locking.h
new file mode 100644
index 0000000000..f97683e40d
--- /dev/null
+++ b/lib/erl_interface/src/misc/ei_locking.h
@@ -0,0 +1,76 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1997-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ *
+
+ */
+#ifndef _EI_LOCKING_H
+#define _EI_LOCKING_H
+
+#include "config.h"
+
+#if defined(VXWORKS)
+#include <taskLib.h>
+#include <taskVarLib.h>
+#endif
+
+#ifdef __WIN32__
+#include <winsock2.h>
+#include <windows.h>
+#include <winbase.h>
+#endif
+
+#ifdef HAVE_MIT_PTHREAD_H
+#include <pthread/mit/pthread.h>
+#elif HAVE_PTHREAD_H 
+#include <pthread.h>
+#endif
+
+
+typedef struct ei_mutex_s {
+#ifdef __WIN32__
+  HANDLE lock;
+#elif VXWORKS
+  SEM_ID lock;
+#else /* unix */
+#if defined(HAVE_MIT_PTHREAD_H) || defined(HAVE_PTHREAD_H)
+  pthread_mutex_t *lock;
+#else /* ! (HAVE_MIT_PTHREAD_H || HAVE_PTHREAD_H) */
+  void *dummy;   /* Actually never used */
+#endif /* ! (HAVE_MIT_PTHREAD_H || HAVE_PTHREAD_H) */
+#endif /* unix */
+} ei_mutex_t;
+
+extern ei_mutex_t* ei_sockets_lock; /* FIXME global variable! */
+
+ei_mutex_t *ei_mutex_create(void);
+int ei_mutex_free(ei_mutex_t *l, int nblock);
+int ei_mutex_lock(ei_mutex_t *l, int nblock);
+int ei_mutex_unlock(ei_mutex_t *l);
+
+
+#if defined(_REENTRANT) && !defined(VXWORKS) && !defined(__WIN32__)
+
+void *ei_m_create(void);
+int ei_m_destroy(void *l);
+int ei_m_lock(void *l);
+int ei_m_trylock(void *l);
+int ei_m_unlock(void *l);
+
+#endif /* _REENTRANT && !VXWORKS && !__WIN32__ */
+
+#endif /* _EI_LOCKING_H */