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

cde/lib/DtSvc/include/DtSvcLock.h

@@ -0,0 +1,48 @@
+/* $XConsortium: DtSvcLock.h /main/6 1996/08/28 17:58:14 rswiston $ */
+/*                                                                      *
+ * (c) Copyright 1996 Hewlett-Packard Company                           *
+ * (c) Copyright 1996 International Business Machines Corp.             *
+ * (c) Copyright 1996 Sun Microsystems, Inc.                            *
+ * (c) Copyright 1996 Novell, Inc.                                      *
+ * (c) Copyright 1996 Digital Equipment Corporation.			*
+ * (c) Copyright 1996 FUJITSU LIMITED.					*
+ * (c) Copyright 1996 Hitachi.						*
+ */
+
+#ifndef	_DtSvc_Lock_h
+#define	_DtSvc_Lock_h
+
+/********    Conditionally defined macros for thread_safe DtSvc ******/
+#ifdef XTHREADS
+#define _DtSvcWidgetToAppContext(w) \
+        XtAppContext app = XtWidgetToApplicationContext(w)
+#define _DtSvcDisplayToAppContext(d) \
+        XtAppContext app = XtDisplayToApplicationContext(d)
+#define _DtSvcAppLock(app) XtAppLock(app)
+#define _DtSvcAppUnlock(app) XtAppUnlock(app)
+
+/*
+ * NOTE: To use _DtSvcApp{Lock,Unlock}Default(), your file
+ * must either include <Dt/DtP.h> or declare _DtAppContext
+ * as an external variable, i.e. "extern XtAppContext _DtAppContext;"
+ */
+#define _DtSvcAppLockDefault() \
+	if (_DtAppContext != (XtAppContext)NULL) XtAppLock(_DtAppContext)
+#define _DtSvcAppUnlockDefault() \
+	if (_DtAppContext != (XtAppContext)NULL) XtAppUnlock(_DtAppContext)
+
+#define _DtSvcProcessLock() XtProcessLock()
+#define _DtSvcProcessUnlock() XtProcessUnlock()
+#else /* XTHREADS */
+#define _DtSvcWidgetToAppContext(w)
+#define _DtSvcDisplayToAppContext(d)
+#define _DtSvcAppLock(app)
+#define _DtSvcAppUnlock(app)
+#define _DtSvcAppLockDefault()
+#define _DtSvcAppUnlockDefault()
+#define _DtSvcProcessLock()
+#define _DtSvcProcessUnlock()
+#endif /* XTHREADS */
+
+#endif	/* _DtSvc_Lock_h */
+/* DON'T ADD ANYTHING AFTER THIS #endif... */