[SCM] master: Maintain previous value of watched variable in WatchpointObserver.

[tthomas@sourceware.org]

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       via  81647a994c50b61d87ec8ff4eedc079990f7e4bb (commit)
      from  3a848ec1396198a762420c60d340cf0cf77b2b11 (commit)

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- Log -----------------------------------------------------------------
commit 81647a994c50b61d87ec8ff4eedc079990f7e4bb
Author: Teresa Thomas <tthomas@redhat.com>
Date:   Wed May 28 15:25:44 2008 -0400

    Maintain previous value of watched variable in WatchpointObserver.
    
    frysk-core/frysk/rt/ChangeLog:
    2008-05-28  Teresa Thomas  <tthomas@redhat.com>
    
    	* WatchObserverInstaller.java (WatchpointObserver):
    	Maintain oldValue here.

-----------------------------------------------------------------------

Summary of changes:
 frysk-core/frysk/rt/ChangeLog                   |    3 +++
 frysk-core/frysk/rt/WatchObserverInstaller.java |   11 ++++-------
 2 files changed, 7 insertions(+), 7 deletions(-)

First 500 lines of diff:
diff --git a/frysk-core/frysk/rt/ChangeLog b/frysk-core/frysk/rt/ChangeLog
index abf6639..82cf8e7 100644
--- a/frysk-core/frysk/rt/ChangeLog
+++ b/frysk-core/frysk/rt/ChangeLog
@@ -1,5 +1,8 @@
 2008-05-28  Teresa Thomas  <tthomas@redhat.com>
 
+	* WatchObserverInstaller.java (WatchpointObserver):
+	Maintain oldValue here.
+	
 	* WatchObserverInstaller.java (oldValue): Make static. 
 	
 	* WatchObserverInstaller.java: New file.
diff --git a/frysk-core/frysk/rt/WatchObserverInstaller.java b/frysk-core/frysk/rt/WatchObserverInstaller.java
index 885f43c..3d0bfd6 100644
--- a/frysk-core/frysk/rt/WatchObserverInstaller.java
+++ b/frysk-core/frysk/rt/WatchObserverInstaller.java
@@ -61,11 +61,6 @@ public class WatchObserverInstaller {
     
     private static int watchpointsInUse = 0;
     
-    // Maintain oldValue statically so that changes made to a 
-    // a value being watched by multiple watchpoints are
-    // are reflected in all watch observers.
-    private static String oldValue = "";
-    
     Expression expr;
     String exprString;
     SteppingEngine ste;
@@ -137,6 +132,7 @@ public class WatchObserverInstaller {
 	String exprString;
 	SteppingEngine ste;
 	PrintWriter writer;
+	String oldValue;
 	Task task;
 	
 	WatchpointObserver(Expression expr, String exprStr, Task task,
@@ -146,8 +142,9 @@ public class WatchObserverInstaller {
 	    this.ste = ste;
 	    this.writer = writer;
 	    this.task = task;
+	    this.oldValue = "";
+
 	}
-	
 	public Action updateHit(Task task, long address, int length) {
 
 	    String newValue = expr.getValue().toPrint
@@ -173,7 +170,7 @@ public class WatchObserverInstaller {
 	    watchpointsInUse++;
 	    // XXX: getValue may modify inferior.
 	    oldValue = expr.getValue().toPrint
-	               (Format.NATURAL, task.getMemory());	    
+	                      (Format.NATURAL, task.getMemory());	    
 	}
 
 	public void deletedFrom(Object observable) {


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