Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/utility/atomic_lock.h

@@ -0,0 +1,55 @@
+/*
+ * $XConsortium: atomic_lock.h /main/3 1996/06/11 17:36:00 cde-hal $
+ *
+ * Copyright (c) 1993 HAL Computer Systems International, Ltd.
+ * All rights reserved.  Unpublished -- rights reserved under
+ * the Copyright Laws of the United States.  USE OF A COPYRIGHT
+ * NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
+ * OR DISCLOSURE.
+ * 
+ * THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
+ * SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.  USE,
+ * DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
+ * PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
+ * INTERNATIONAL, LTD.
+ * 
+ *                         RESTRICTED RIGHTS LEGEND
+ * Use, duplication, or disclosure by the Government is subject
+ * to the restrictions as set forth in subparagraph (c)(l)(ii)
+ * of the Rights in Technical Data and Computer Software clause
+ * at DFARS 252.227-7013.
+ *
+ *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
+ *                  1315 Dell Avenue
+ *                  Campbell, CA  95008
+ * 
+ */
+
+   
+#ifndef _atomic_lock_h
+#define _atomic_lock_h 1
+
+#include <fcntl.h>
+#include <errno.h>
+
+#include "utility/funcs.h"
+
+#define NAPTIME  5
+#define MAXTRIES 3
+
+class atomic_lock 
+{
+
+public:
+   atomic_lock(const char* path);
+   ~atomic_lock();
+
+   Boolean lock();
+   Boolean unlock();
+
+protected:
+   char v_path[PATHSIZ];
+
+};
+
+#endif