[Csp-commits] svn:csp r1801 - trunk/CSP/csp/cspsim

[<sv...@ww...>]

Author: mkrose
Date: 2005-12-23 11:48:55 -0800 (Fri, 23 Dec 2005)
New Revision: 1801

Modified:
   trunk/CSP/csp/cspsim/Bus.h
Log:
Add convenience method for pushing data channels only when the value changes.

Browse at: https://www.zerobar.net/viewcvs/viewcvs.cgi?view=rev&rev=1801

Modified: trunk/CSP/csp/cspsim/Bus.h
===================================================================
--- trunk/CSP/csp/cspsim/Bus.h	2005-12-23 05:53:48 UTC (rev 1800)
+++ trunk/CSP/csp/cspsim/Bus.h	2005-12-23 19:48:55 UTC (rev 1801)
@@ -380,6 +380,18 @@
 		push();
 	}
 
+	/** Set the channel value and signal the change to listeners if the value has
+	 *  changed.
+	 *
+	 *  Should only be called for push channels (asserts false otherwise).
+	 */
+	void pushOnChange(const T& value) {
+		if (m_Value != value) {
+			m_Value = value;
+			push();
+		}
+	}
+
 	/** Set a handler for a non-shared data channel that will be called when
 	 *  a holder of a const reference to the channel requests that a new value
 	 *  be set.  The handler can honor this request by setting the channel