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[303503] Cannot rely on a GDB command to know the list of processes being debugged, because GDB is not available when the program is running. We can use =thread-group-created and =thread-group-exited events to keep our own list instead.

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This commit is contained in:
Marc Khouzam 2010-02-22 17:56:12 +00:00
parent d8ba081c40
commit 657ecd8e53
1 changed files with 24 additions and 25 deletions
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49
dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/service/GDBProcesses_7_0.java
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@ -393,7 +393,10 @@ public class GDBProcesses_7_0 extends AbstractDsfService
// debugging a process, and removed when we stop.
// This allows us to make sure that if a pid is re-used, we will not use an
// old name for it. Bug 275497
private Map<String, String> fDebuggedProcessNames = new HashMap<String, String>();
// This map also serves as a list of processes we are currently debugging.
// This is important because we cannot always ask GDB for the list, since it may
// be running at the time. Bug 303503
private Map<String, String> fDebuggedProcessesAndNames = new HashMap<String, String>();
private static final String FAKE_THREAD_ID = "0"; //$NON-NLS-1$
@ -561,10 +564,15 @@ public class GDBProcesses_7_0 extends AbstractDsfService
// I haven't found a good way to get the pid yet, so let's not show it.
id = null;
} else {
name = fDebuggedProcessNames.get(id);
name = fDebuggedProcessesAndNames.get(id);
if (name == null) {
// We don't have the name in our map. Should not happen.
name = "Unknown name"; //$NON-NLS-1$
} else if (name.length() == 0) {
// Return the default name of our program.
IGDBBackend backend = getServicesTracker().getService(IGDBBackend.class);
name = backend.getProgramPath().toOSString();
fDebuggedProcessesAndNames.put(id, name);
}
}
rm.setData(new MIThreadDMData(name, id));
@ -720,15 +728,14 @@ public class GDBProcesses_7_0 extends AbstractDsfService
}
});
} else {
fContainerCommandCache.execute(
new MIListThreadGroups(controlDmc),
new DataRequestMonitor<MIListThreadGroupsInfo>(getExecutor(), rm) {
@Override
protected void handleSuccess() {
rm.setData(makeContainerDMCs(controlDmc, getData().getGroupList()));
rm.done();
}
});
IMIContainerDMContext[] containerDmcs = new IMIContainerDMContext[fDebuggedProcessesAndNames.size()];
int i = 0;
for (String groupId : fDebuggedProcessesAndNames.keySet()) {
IProcessDMContext processDmc = createProcessContext(controlDmc, groupId);
containerDmcs[i++] = createContainerContext(processDmc, groupId);
}
rm.setData(containerDmcs);
rm.done();
}
}
@ -754,16 +761,6 @@ public class GDBProcesses_7_0 extends AbstractDsfService
return executionDmcs;
}
}
private IMIContainerDMContext[] makeContainerDMCs(ICommandControlDMContext controlDmc, IThreadGroupInfo[] groups) {
IMIContainerDMContext[] containerDmcs = new IMIContainerDMContext[groups.length];
for (int i = 0; i < groups.length; i++) {
String groupId = groups[i].getGroupId();
IProcessDMContext procDmc = createProcessContext(controlDmc, groupId);
containerDmcs[i] = createContainerContext(procDmc, groupId);
}
return containerDmcs;
}
public void getRunningProcesses(IDMContext dmc, final DataRequestMonitor<IProcessDMContext[]> rm) {
final ICommandControlDMContext controlDmc = DMContexts.getAncestorOfType(dmc, ICommandControlDMContext.class);
@ -935,6 +932,8 @@ public class GDBProcesses_7_0 extends AbstractDsfService
if (groupId != null) {
if ("thread-group-created".equals(miEvent)) { //$NON-NLS-1$
fDebuggedProcessesAndNames.put(groupId, ""); //$NON-NLS-1$
// GDB is debugging a new process. Let's fetch its name and remember it.
final String finalGroupId = groupId;
fListThreadGroupsAvailableCache.execute(
@ -950,13 +949,16 @@ public class GDBProcesses_7_0 extends AbstractDsfService
if (isSuccess()) {
for (IThreadGroupInfo groupInfo : getData().getGroupList()) {
if (groupInfo.getPid().equals(finalGroupId)) {
fDebuggedProcessNames.put(groupInfo.getPid(), groupInfo.getName());
fDebuggedProcessesAndNames.put(finalGroupId, groupInfo.getName());
}
}
}
}
});
} else if ("thread-group-exited".equals(miEvent)) { //$NON-NLS-1$
// GDB is no longer debugging this process. Remove it from our list.
fDebuggedProcessesAndNames.remove(groupId);
// Remove any entries for that group from our thread to group map
// When detaching from a group, we won't have received any thread-exited event
// but we don't want to keep those entries.
@ -968,9 +970,6 @@ public class GDBProcesses_7_0 extends AbstractDsfService
}
}
}
// GDB is no longer debugging this process. Remove its name.
fDebuggedProcessNames.remove(groupId);
}
}
}