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* [SCM] master: Record Task registering TaskObserver.Code with BreakpointAddresses. Bug #5234.
@ 2008-04-21 10:26 mark
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From: mark @ 2008-04-21 10:26 UTC (permalink / raw)
To: frysk-cvs
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- Log -----------------------------------------------------------------
commit c9b6156e7b4d4ab4ccb29024e22625901595c15b
Author: Mark Wielaard <mwielaard@redhat.com>
Date: Mon Apr 21 12:24:08 2008 +0200
Record Task registering TaskObserver.Code with BreakpointAddresses. Bug #5234.
frysk-core/frysk/proc/live/ChangeLog
2008-04-21 Mark Wielaard <mwielaard@redhat.com>
* BreakpointAddresses.java: Mark class and methods package private.
(CodeObserver): New final static helper class.
(addBreakpoint): Take CodeObserver as argument, not
TaskObserver.Code.
(removeBreakpoint): Likewise.
(getCodeObservers): Return collection of CodeObservers, not
TaskObserver.Code.
* LinuxPtraceProc.java (BreakpointAction.run): Install or remove
BreakpointAddresses.CodeObserver instead of bare TaskObserver.Code.
* LinuxPtraceTask.java (notifyCodeBreakpoint): Check Task against
BreakpointAddresses.CodeObserver.
* TestTaskObserverCode.java (testMultiTaskUpdateCalledSeveralTimes):
Resolved bug #5234.
-----------------------------------------------------------------------
Summary of changes:
.../frysk/proc/live/BreakpointAddresses.java | 58 ++++++++++++++++----
frysk-core/frysk/proc/live/ChangeLog | 16 ++++++
frysk-core/frysk/proc/live/LinuxPtraceProc.java | 10 +++-
frysk-core/frysk/proc/live/LinuxPtraceTask.java | 9 ++--
.../frysk/proc/live/TestTaskObserverCode.java | 3 -
5 files changed, 77 insertions(+), 19 deletions(-)
First 500 lines of diff:
diff --git a/frysk-core/frysk/proc/live/BreakpointAddresses.java b/frysk-core/frysk/proc/live/BreakpointAddresses.java
index dc59c34..1fb127a 100644
--- a/frysk-core/frysk/proc/live/BreakpointAddresses.java
+++ b/frysk-core/frysk/proc/live/BreakpointAddresses.java
@@ -42,6 +42,7 @@ package frysk.proc.live;
import frysk.proc.TaskObserver;
import frysk.proc.Proc;
+import frysk.proc.Task;
import java.util.Collection;
import java.util.Iterator;
import java.util.HashMap;
@@ -62,8 +63,45 @@ import java.util.ArrayList;
* This datastructure isn't multithread safe, it should only be called
* from the eventloop in response to requests pending for the Proc.
*/
-public class BreakpointAddresses
+class BreakpointAddresses
{
+
+ /**
+ * Small package private class holding Task and TaskObserver.Code
+ * interested in a particular breakpoint. Used by
+ * <code>addBreakpoint()</code>, <code>removeBreakpoint</code> and
+ * <code>getBreakpoints()</code>.
+ */
+ final static class CodeObserver
+ {
+ final Task task;
+ final TaskObserver.Code observer;
+
+ CodeObserver(Task task, TaskObserver.Code observer)
+ {
+ if (task == null || observer == null)
+ throw new NullPointerException();
+
+ this.task = task;
+ this.observer = observer;
+ }
+
+ public boolean equals(Object o)
+ {
+ if (! (o instanceof CodeObserver))
+ return false;
+
+ CodeObserver other = (CodeObserver) o;
+ return (this.task.equals(other.task)
+ && this.observer.equals(other.observer));
+ }
+
+ public int hashCode()
+ {
+ return task.hashCode() ^ observer.hashCode();
+ }
+ }
+
/**
* Proc used to set breakpoints and which sents us notifications
* when breakpoints are hit.
@@ -85,7 +123,7 @@ public class BreakpointAddresses
/**
* Package private constructor used by the Proc when created.
*/
- public BreakpointAddresses(Proc proc)
+ BreakpointAddresses(Proc proc)
{
this.proc = proc;
map = new HashMap();
@@ -99,7 +137,7 @@ public class BreakpointAddresses
* added to the list of objects to notify when the breakpoint is
* hit (and the method returns false).
*/
- public boolean addBreakpoint(TaskObserver.Code observer, long address)
+ boolean addBreakpoint(CodeObserver observer, long address)
{
Breakpoint breakpoint = Breakpoint.create(address, proc);
@@ -129,7 +167,7 @@ public class BreakpointAddresses
*
* @throws IllegalArgumentException if the observer was never added.
*/
- public boolean removeBreakpoint(TaskObserver.Code observer, long address)
+ boolean removeBreakpoint(CodeObserver observer, long address)
{
Breakpoint breakpoint = Breakpoint.create(address, proc);
ArrayList list = (ArrayList) map.get(breakpoint);
@@ -149,10 +187,11 @@ public class BreakpointAddresses
/**
* Called by the Proc when it has trapped a breakpoint. Returns a
- * Collection of TaskObserver.Code observers interested in the given
+ * Collection of CodeObservers interested in the given
* address or null when no Code observer was installed on this address.
+ * Package private (as is CodeObserver).
*/
- public Collection getCodeObservers(long address) {
+ Collection getCodeObservers(long address) {
ArrayList observers;
Breakpoint breakpoint = Breakpoint.create(address, proc);
ArrayList list = (ArrayList) map.get(breakpoint);
@@ -165,7 +204,7 @@ public class BreakpointAddresses
return observers;
}
- public Breakpoint getBreakpoint(long address)
+ Breakpoint getBreakpoint(long address)
{
Breakpoint breakpoint = Breakpoint.create(address, proc);
Object observer = map.get(breakpoint);
@@ -180,7 +219,7 @@ public class BreakpointAddresses
* (possibly) installed starting at the from address up to (but not
* including) the till address.
*/
- public Iterator getBreakpoints(long from, long till)
+ Iterator getBreakpoints(long from, long till)
{
Breakpoint fromBreakpoint = Breakpoint.create(from, proc);
Breakpoint tillBreakpoint = Breakpoint.create(till, proc);
@@ -191,9 +230,8 @@ public class BreakpointAddresses
* Called from TaskState when the Task gets an execed event which
* clears the whole address space.
*
- * XXX: Should not be public.
*/
- public void removeAllCodeObservers()
+ void removeAllCodeObservers()
{
map.clear();
breakpoints.clear();
diff --git a/frysk-core/frysk/proc/live/ChangeLog b/frysk-core/frysk/proc/live/ChangeLog
index 8826d51..9d495c6 100644
--- a/frysk-core/frysk/proc/live/ChangeLog
+++ b/frysk-core/frysk/proc/live/ChangeLog
@@ -1,3 +1,19 @@
+2008-04-21 Mark Wielaard <mwielaard@redhat.com>
+
+ * BreakpointAddresses.java: Mark class and methods package private.
+ (CodeObserver): New final static helper class.
+ (addBreakpoint): Take CodeObserver as argument, not
+ TaskObserver.Code.
+ (removeBreakpoint): Likewise.
+ (getCodeObservers): Return collection of CodeObservers, not
+ TaskObserver.Code.
+ * LinuxPtraceProc.java (BreakpointAction.run): Install or remove
+ BreakpointAddresses.CodeObserver instead of bare TaskObserver.Code.
+ * LinuxPtraceTask.java (notifyCodeBreakpoint): Check Task against
+ BreakpointAddresses.CodeObserver.
+ * TestTaskObserverCode.java (testMultiTaskUpdateCalledSeveralTimes):
+ Resolved bug #5234.
+
2008-04-15 Teresa Thomas <tthomas@redhat.com>
* LinuxPtraceTask.java (isInstructionObserverAdded): New.
diff --git a/frysk-core/frysk/proc/live/LinuxPtraceProc.java b/frysk-core/frysk/proc/live/LinuxPtraceProc.java
index d376fc2..14e1e00 100644
--- a/frysk-core/frysk/proc/live/LinuxPtraceProc.java
+++ b/frysk-core/frysk/proc/live/LinuxPtraceProc.java
@@ -552,14 +552,20 @@ public class LinuxPtraceProc extends LiveProc {
public void run() {
if (addition) {
- boolean mustInstall = breakpoints.addBreakpoint(code, address);
+ BreakpointAddresses.CodeObserver observer;
+ boolean mustInstall;
+ observer = new BreakpointAddresses.CodeObserver(task, code);
+ mustInstall = breakpoints.addBreakpoint(observer, address);
if (mustInstall) {
Breakpoint breakpoint;
breakpoint = Breakpoint.create(address, LinuxPtraceProc.this);
breakpoint.install(task);
}
} else {
- boolean mustRemove = breakpoints.removeBreakpoint(code, address);
+ BreakpointAddresses.CodeObserver observer;
+ boolean mustRemove;
+ observer = new BreakpointAddresses.CodeObserver(task, code);
+ mustRemove = breakpoints.removeBreakpoint(observer, address);
if (mustRemove) {
Breakpoint breakpoint;
breakpoint = Breakpoint.create(address, LinuxPtraceProc.this);
diff --git a/frysk-core/frysk/proc/live/LinuxPtraceTask.java b/frysk-core/frysk/proc/live/LinuxPtraceTask.java
index 2121018..397f69b 100644
--- a/frysk-core/frysk/proc/live/LinuxPtraceTask.java
+++ b/frysk-core/frysk/proc/live/LinuxPtraceTask.java
@@ -966,10 +966,11 @@ public class LinuxPtraceTask extends LiveTask {
Iterator i = observers.iterator();
while (i.hasNext()) {
- TaskObserver.Code observer = (TaskObserver.Code) i.next();
- if (codeObservers.contains(observer))
- if (observer.updateHit(this, address) == Action.BLOCK)
- blockers.add(observer);
+ BreakpointAddresses.CodeObserver co;
+ co = (BreakpointAddresses.CodeObserver) i.next();
+ if (co.task.equals(this))
+ if (co.observer.updateHit(this, address) == Action.BLOCK)
+ blockers.add(co.observer);
}
return blockers.size();
}
diff --git a/frysk-core/frysk/proc/live/TestTaskObserverCode.java b/frysk-core/frysk/proc/live/TestTaskObserverCode.java
index 62108f2..db209b8 100644
--- a/frysk-core/frysk/proc/live/TestTaskObserverCode.java
+++ b/frysk-core/frysk/proc/live/TestTaskObserverCode.java
@@ -763,9 +763,6 @@ public class TestTaskObserverCode extends TestLib
// get separate update events. bug #5234
public void testMultiTaskUpdateCalledSeveralTimes() throws Exception
{
- if (unresolved(5234))
- return;
-
// Create a child.
LegacyOffspring child = LegacyOffspring.createDaemon();
hooks/post-receive
--
frysk system monitor/debugger
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