@Override
protected void execute(final DataRequestMonitor<FormattedValueDMData> rm) {
DsfSession session = DsfSession.getSession(frame.getSessionId());
IExpressions expressions = dsfServicesTracker.getService(IExpressions.class);
if (expressions == null) {
rm.setStatus(
DsfUIPlugin.newErrorStatus(
IDsfStatusConstants.REQUEST_FAILED, "No expression service", null)); // $NON-NLS-1$
rm.done();
return;
}
IExpressionDMContext expressionDMC = expressions.createExpression(frame, expression);
FormattedValueDMContext formattedValueContext =
expressions.getFormattedValueContext(expressionDMC, getHoverFormat());
expressions.getFormattedExpressionValue(
formattedValueContext,
new DataRequestMonitor<FormattedValueDMData>(session.getExecutor(), rm) {
@Override
protected void handleSuccess() {
rm.setData(getData());
rm.done();
}
@Override
protected void handleFailure() {
rm.done();
}
});
}
@Override
public IStatus runInUIThread(IProgressMonitor monitor) {
final Status NO_PID_STATUS =
new Status(
IStatus.ERROR,
GdbUIPlugin.PLUGIN_ID,
-1,
LaunchMessages.getString(
"LocalAttachLaunchDelegate.No_Process_ID_selected"), //$NON-NLS-1$
null);
try {
PrompterInfo info = new PrompterInfo(fNewProcessSupported, fProcessList);
Object result = new ProcessPrompter().handleStatus(null, info);
if (result == null) {
fRequestMonitor.cancel();
} else if (result instanceof IProcessExtendedInfo[] || result instanceof String) {
fRequestMonitor.setData(result);
} else {
fRequestMonitor.setStatus(NO_PID_STATUS);
}
} catch (CoreException e) {
fRequestMonitor.setStatus(NO_PID_STATUS);
}
fRequestMonitor.done();
return Status.OK_STATUS;
}
@Override
public void getCPUs(
final IHardwareTargetDMContext dmc, final DataRequestMonitor<ICPUDMContext[]> rm) {
if (!fSessionInitializationComplete) {
// We are not ready to answer yet
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INVALID_STATE,
"Debug session not initialized yet",
null)); //$NON-NLS-1$
return;
}
if (supportsProcPseudoFS()) {
fFetchCPUInfoCache.execute(
new MIMetaGetCPUInfo(fCommandControl.getContext()),
new ImmediateDataRequestMonitor<MIMetaGetCPUInfoInfo>() {
@Override
protected void handleSuccess() {
rm.done(parseCoresInfoForCPUs(dmc, getData().getInfo()));
}
});
} else {
// No way to know the CPUs for Windows session.
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
NOT_SUPPORTED,
"Operation not supported",
null)); //$NON-NLS-1$
}
}
/* (non-Javadoc)
* @see org.eclipse.cdt.dsf.debug.service.IDisassembly#getMixedInstructions(org.eclipse.cdt.dsf.debug.service.IDisassembly.IDisassemblyDMContext, java.lang.String, int, int, org.eclipse.cdt.dsf.concurrent.DataRequestMonitor)
*/
public void getMixedInstructions(
IDisassemblyDMContext context,
String filename,
int linenum,
int lines,
final DataRequestMonitor<IMixedInstruction[]> drm) {
// Validate the context
if (context == null) {
drm.setStatus(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Unknown context type",
null)); //$NON-NLS-1$);
drm.done();
return;
}
// Go for it
fConnection.queueCommand(
fCommandFactory.createMIDataDisassemble(context, filename, linenum, lines, true),
new DataRequestMonitor<MIDataDisassembleInfo>(getExecutor(), drm) {
@Override
protected void handleSuccess() {
IMixedInstruction[] result = getData().getMIMixedCode();
drm.setData(result);
drm.done();
}
});
}
/* (non-Javadoc)
* @see org.eclipse.cdt.dsf.debug.service.IDisassembly#getInstructions(org.eclipse.cdt.dsf.debug.service.IDisassembly.IDisassemblyDMContext, java.math.BigInteger, java.math.BigInteger, org.eclipse.cdt.dsf.concurrent.DataRequestMonitor)
*/
public void getInstructions(
IDisassemblyDMContext context,
BigInteger startAddress,
BigInteger endAddress,
final DataRequestMonitor<IInstruction[]> drm) {
// Validate the context
if (context == null) {
drm.setStatus(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Unknown context type",
null)); //$NON-NLS-1$);
drm.done();
return;
}
// Go for it
String start = (startAddress != null) ? startAddress.toString() : "$pc"; // $NON-NLS-1$
String end = (endAddress != null) ? endAddress.toString() : "$pc + 100"; // $NON-NLS-1$
fConnection.queueCommand(
fCommandFactory.createMIDataDisassemble(context, start, end, false),
new DataRequestMonitor<MIDataDisassembleInfo>(getExecutor(), drm) {
@Override
protected void handleSuccess() {
IInstruction[] result = getData().getMIAssemblyCode();
drm.setData(result);
drm.done();
}
});
}
@Override
public void getExecutionData(IDMContext dmc, DataRequestMonitor<IDMData> rm) {
if (dmc instanceof ICoreDMContext) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INVALID_HANDLE,
"Not done yet",
null)); //$NON-NLS-1$
} else if (dmc instanceof ICPUDMContext) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INVALID_HANDLE,
"Not done yet",
null)); //$NON-NLS-1$
} else {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INVALID_HANDLE,
"Invalid DMC type",
null)); //$NON-NLS-1$
}
}
private void processCountRequest(CountRequest request) {
@SuppressWarnings("unchecked") // Suppress warning about lost type info.
DataRequestMonitor<Integer> rm = (DataRequestMonitor<Integer>) request.fRequestMonitor;
rm.setData(fCount);
rm.done();
}
/**
* For a given "load info" request, this method processes the load obtained from the proc stat
* parser and creates/sends the response.
*
* @param context
* @param rm
* @param loads
*/
private void processLoads(
final IDMContext context,
final DataRequestMonitor<ILoadInfo> rm,
final ProcStatCoreLoads loads) {
// problem with fetching load info
if (loads == null) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info",
null)); //$NON-NLS-1$
return;
}
// core context?
if (context instanceof ICoreDMContext) {
String coreId = ((ICoreDMContext) context).getId();
// Integer precision sufficient for our purpose
float load = loads.getLoad(coreId);
rm.done(new GDBLoadInfo(Integer.toString((int) load)));
} else if (context instanceof ICPUDMContext) {
// get the list of cores in that CPU
getCores(
context,
new ImmediateDataRequestMonitor<ICoreDMContext[]>() {
@Override
protected void handleCompleted() {
ICoreDMContext[] coreContexts = getData();
if (!isSuccess() || coreContexts == null || coreContexts.length < 1) {
// Unable to get any core data
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
return;
}
int i = 0;
float load = 0.0f;
// compute the average load of cores in that CPU
for (ICoreDMContext coreCtx : coreContexts) {
String coreId = coreCtx.getId();
load += loads.getLoad(coreId);
i++;
}
load /= i;
rm.done(new GDBLoadInfo(Integer.toString((int) load)));
}
});
}
}
@Override
public void getValue(int index, DataRequestMonitor<Integer> rm) {
if (!fShutdown.get()) {
fQueue.add(new ItemRequest(index, rm));
} else {
rm.setStatus(new Status(IStatus.ERROR, DsfExamplesPlugin.PLUGIN_ID, "Supplier shut down"));
rm.done();
}
}
private void processItemRequest(ItemRequest request) {
@SuppressWarnings("unchecked") // Suppress warning about lost type info.
DataRequestMonitor<Integer> rm = (DataRequestMonitor<Integer>) request.fRequestMonitor;
if (fChangedValues.containsKey(request.fIndex)) {
rm.setData(fChangedValues.get(request.fIndex));
} else {
rm.setData(request.fIndex);
}
rm.done();
}
/** Start executing the program. */
@Execute
public void stepStartExecution(final RequestMonitor rm) {
if (fBackend.getSessionType() != SessionType.CORE) {
// Overwrite the program name to use the binary name that was specified.
// This is important for multi-process
// Bug 342351
fAttributes.put(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_NAME, fBinaryName);
fProcService.start(
getContainerContext(),
fAttributes,
new DataRequestMonitor<IContainerDMContext>(ImmediateExecutor.getInstance(), rm) {
@Override
protected void handleSuccess() {
assert getData() instanceof IMIContainerDMContext;
// Set the container that we created
setContainerContext(
DMContexts.getAncestorOfType(getData(), IMIContainerDMContext.class));
fDataRequestMonitor.setData(getContainerContext());
// Don't call fDataRequestMonitor.done(), the sequence will
// automatically do that when it completes;
rm.done();
}
});
} else {
fDataRequestMonitor.setData(getContainerContext());
rm.done();
}
}
/** @since 4.2 */
@Override
public void getResourceClasses(IDMContext dmc, DataRequestMonitor<IResourceClass[]> rm) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
NOT_SUPPORTED,
"Operation not supported",
null)); //$NON-NLS-1$
}
@Override
public void sourceContainersChanged(
final ISourceLookupDMContext sourceLookupCtx, final DataRequestMonitor<Boolean> rm) {
if (!fDirectors.containsKey(sourceLookupCtx)) {
rm.setStatus(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
IDsfStatusConstants.INVALID_HANDLE,
"No source director configured for given context",
null)); //$NON-NLS-1$ );
rm.done();
return;
}
Map<String, String> entries = getSubstitutionsPaths(sourceLookupCtx);
if (entries.equals(fCachedEntries)) {
rm.done(false);
} else {
/*
* Issue the clear and set commands back to back so that the
* executor thread atomically changes the source lookup settings.
* Any commands to GDB issued after this call will get the new
* source substitute settings.
*/
CountingRequestMonitor countingRm =
new CountingRequestMonitor(getExecutor(), rm) {
@Override
protected void handleSuccess() {
rm.done(true);
}
};
fCommand.queueCommand(
fCommandFactory.createCLIUnsetSubstitutePath(sourceLookupCtx),
new DataRequestMonitor<MIInfo>(getExecutor(), countingRm));
initializeSourceSubstitutions(sourceLookupCtx, new RequestMonitor(getExecutor(), countingRm));
countingRm.setDoneCount(2);
}
}
@Override
protected void execute(final DataRequestMonitor<V> rm) {
/*
* We're in another dispatch, so we must guard against executor
* shutdown again.
*/
final DsfSession session = DsfSession.getSession(fDmc.getSessionId());
if (session == null) {
rm.setStatus(
new Status(
IStatus.ERROR,
DsfUIPlugin.PLUGIN_ID,
IDsfStatusConstants.INVALID_STATE,
"Debug session already shut down.",
null)); //$NON-NLS-1$
rm.done();
return;
}
/*
* Guard against a disposed service
*/
IRegisters service = getService();
if (service == null) {
rm.setStatus(
new Status(
IStatus.ERROR,
DsfUIPlugin.PLUGIN_ID,
IDsfStatusConstants.INVALID_STATE,
"Service unavailable",
null)); //$NON-NLS-1$
rm.done();
return;
}
doExecute(service, rm);
}
@Override
protected IStatus run(IProgressMonitor monitor) {
final IStatus promptStatus =
new Status(
IStatus.INFO,
"org.eclipse.debug.ui",
200 /*STATUS_HANDLER_PROMPT*/,
"",
null); //$NON-NLS-1$//$NON-NLS-2$
final IStatus filePrompt =
new Status(
IStatus.INFO,
"org.eclipse.cdt.dsf.gdb.ui",
1001,
"",
null); //$NON-NLS-1$//$NON-NLS-2$
// consult a status handler
final IStatusHandler prompter = DebugPlugin.getDefault().getStatusHandler(promptStatus);
final Status NO_CORE_STATUS =
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
-1,
LaunchMessages.getString("LocalCDILaunchDelegate.6"), // $NON-NLS-1$
null);
if (prompter == null) {
fRequestMonitor.setStatus(NO_CORE_STATUS);
fRequestMonitor.done();
return Status.OK_STATUS;
}
try {
Object result = prompter.handleStatus(filePrompt, null);
if (result == null) {
fRequestMonitor.cancel();
} else if (result instanceof String) {
fRequestMonitor.setData((String) result);
} else {
fRequestMonitor.setStatus(NO_CORE_STATUS);
}
} catch (CoreException e) {
fRequestMonitor.setStatus(NO_CORE_STATUS);
}
fRequestMonitor.done();
return Status.OK_STATUS;
}
@Override
public void getAvailableFormats(IFormattedDataDMContext dmc, DataRequestMonitor<String[]> rm) {
rm.setData(AVAILABLE_FORMATS);
rm.done();
}
/**
* Tests whether the given element matches the given expression.
*
* @param element Element to test against the given expression.
* @param expression Expression to use to check if the element is matching.
* @param rm The request monitor for the result.
*/
@ConfinedToDsfExecutor("#getSession#getExecutor")
protected void testElementForExpression(
Object element, IExpression expression, final DataRequestMonitor<Boolean> rm) {
rm.setData(false);
rm.done();
}
@Override
public <V extends ICommandResult> ICommandToken queueCommand(
final ICommand<V> command, DataRequestMonitor<V> rm) {
final ICommandToken token =
new ICommandToken() {
@Override
public ICommand<? extends ICommandResult> getCommand() {
return command;
}
};
// The class does not buffer commands itself, but sends them directly to the real
// MICommandControl service. Therefore, we must immediately tell our calling cache that the
// command
// has been sent, since we can never cancel it.
processCommandSent(token);
if (command instanceof MIMetaGetCPUInfo) {
@SuppressWarnings("unchecked")
final DataRequestMonitor<MIMetaGetCPUInfoInfo> drm =
(DataRequestMonitor<MIMetaGetCPUInfoInfo>) rm;
final ICommandControlDMContext dmc = (ICommandControlDMContext) command.getContext();
if (fBackend.getSessionType() == SessionType.REMOTE) {
// Ask GDB to fetch /proc/cpuinfo from the remote target, and then we parse it.
String remoteFile = "/proc/cpuinfo"; // $NON-NLS-1$
final String localFile =
sTempFolder + "proc.cpuinfo." + getSession().getId(); // $NON-NLS-1$
fCommandControl.queueCommand(
fCommandFactory.createCLIRemoteGet(dmc, remoteFile, localFile),
new ImmediateDataRequestMonitor<MIInfo>(rm) {
@Override
protected void handleSuccess() {
ICoreInfo[] info = new CoreList(localFile).getCoreList();
// Now that we processed the file, remove it to avoid polluting the file system
new File(localFile).delete();
drm.done(new MIMetaGetCPUInfoInfo(info));
processCommandDone(token, drm.getData());
}
@Override
protected void handleError() {
// On some older linux versions, gdbserver is not able to read from /proc
// because it is a pseudo filesystem.
// We need to find some other method of getting the info we need.
// For a remote session, we can use GDB's -list-thread-groups --available
// command, which shows on which cores a process is running. This does
// not necessarily give the exhaustive list of cores, but that is the best
// we have in this case.
//
// In this case, we don't have knowledge about CPUs, so we lump all cores
// into a single CPU.
fCommandControl.queueCommand(
fCommandFactory.createMIListThreadGroups(dmc, true),
new ImmediateDataRequestMonitor<MIListThreadGroupsInfo>(drm) {
@Override
protected void handleSuccess() {
// First extract the string id for every core GDB reports
Set<String> coreIds = new HashSet<String>();
IThreadGroupInfo[] groups = getData().getGroupList();
for (IThreadGroupInfo group : groups) {
coreIds.addAll(Arrays.asList(group.getCores()));
}
// Now create the context for each distinct core
//
// We don't have CPU info in this case so let's put them all under a
// single CPU
final String defaultCPUId = "0"; // $NON-NLS-1$
ICoreInfo[] info = new ICoreInfo[coreIds.size()];
int i = 0;
for (String id : coreIds) {
info[i++] = new CoreInfo(id, defaultCPUId);
}
drm.done(new MIMetaGetCPUInfoInfo(info));
processCommandDone(token, drm.getData());
}
});
}
});
} else {
// For a local session, parse /proc/cpuinfo directly.
ICoreInfo[] info = new CoreList("/proc/cpuinfo").getCoreList(); // $NON-NLS-1$
drm.done(new MIMetaGetCPUInfoInfo(info));
processCommandDone(token, drm.getData());
}
} else {
rm.setStatus(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
IDsfStatusConstants.INTERNAL_ERROR,
"Unexpected Meta command",
null)); //$NON-NLS-1$
rm.done();
}
return token;
}
@Override
public void getFormattedExpressionValue(
FormattedValueDMContext dmc, DataRequestMonitor<FormattedValueDMData> rm) {
rm.setData(new FormattedValueDMData(dmc.getFormatID()));
rm.done();
}
/**
* This method processes "load info" requests. The load is computed using a sampling method; two
* readings of a local or remote /proc/stat file are done with a delay in between. Then the load
* is computed from the two samples, for all CPUs/cores known in the system.
*
* <p>Because of the method used, it's possible that fast variations in CPU usage will be missed.
* However longer load trends should be reflected in the results.
*
* <p>To avoid generating too much load in the remote case, there is a cache that will return the
* already computed load, if requested multiple times in a short period. There is also a mechanism
* to queue subsequent requests if one is ongoing. Upon completion of the ongoing request, any
* queued request is answered with the load that was just computed.
*
* @since 4.2
*/
@Override
public void getLoadInfo(final IDMContext context, final DataRequestMonitor<ILoadInfo> rm) {
if (!(context instanceof ICoreDMContext) && !(context instanceof ICPUDMContext)) {
// we only support getting the load for a CPU or a core
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INVALID_HANDLE,
"Load information not supported for this context type",
null)); //$NON-NLS-1$
return;
}
// The measurement interval should be of a minimum length to be meaningful
assert (LOAD_SAMPLE_DELAY >= 100);
// so the cache is useful
assert (LOAD_CACHE_LIFETIME >= LOAD_SAMPLE_DELAY);
// This way of computing the CPU load is only applicable to Linux
if (!supportsProcPseudoFS()) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
NOT_SUPPORTED,
"Operation not supported",
null)); //$NON-NLS-1$
return;
}
// Is a request is already ongoing?
if (fLoadRequestOngoing) {
// queue current new request
fLoadInfoRequestCache.put(context, rm);
return;
}
// no request ongoing, so proceed
fLoadRequestOngoing = true;
// caching mechanism to keep things sane, even if the views(s)
// request load information very often.
long currentTime = System.currentTimeMillis();
// time to fetch fresh load information?
if (fLastCpuLoadRefresh + LOAD_CACHE_LIFETIME < currentTime) {
fLastCpuLoadRefresh = currentTime;
} else {
// not time yet... re-use cached load data
processLoads(context, rm, fCachedLoads);
fLoadRequestOngoing = false;
return;
}
final ProcStatParser procStatParser = new ProcStatParser();
final ICommandControlDMContext dmc =
DMContexts.getAncestorOfType(context, ICommandControlDMContext.class);
final String statFile = "/proc/stat"; // $NON-NLS-1$
final String localFile = sTempFolder + "proc.stat." + getSession().getId(); // $NON-NLS-1$
// Remote debugging? We will ask GDB to get us the /proc/stat file from target, twice, with a
// delay between.
if (fBackend.getSessionType() == SessionType.REMOTE) {
fCommandControl.queueCommand(
fCommandFactory.createCLIRemoteGet(dmc, statFile, localFile),
new ImmediateDataRequestMonitor<MIInfo>(rm) {
@Override
protected void handleCompleted() {
if (!isSuccess()) {
fLoadRequestOngoing = false;
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
return;
}
// Success - parse first set of stat counters
try {
procStatParser.parseStatFile(localFile);
} catch (Exception e) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
fLoadRequestOngoing = false;
return;
}
// delete temp file
new File(localFile).delete();
getExecutor()
.schedule(
new Runnable() {
@Override
public void run() {
fCommandControl.queueCommand(
fCommandFactory.createCLIRemoteGet(dmc, statFile, localFile),
new ImmediateDataRequestMonitor<MIInfo>(rm) {
@Override
protected void handleCompleted() {
if (!isSuccess()) {
fLoadRequestOngoing = false;
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
return;
}
// Success - parse the second set of stat counters and compute
// loads
try {
procStatParser.parseStatFile(localFile);
} catch (Exception e) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
fLoadRequestOngoing = false;
return;
}
// delete temp file
new File(localFile).delete();
// Compute load
fCachedLoads = procStatParser.getCpuLoad();
processLoads(context, rm, fCachedLoads);
// done with request
fLoadRequestOngoing = false;
// process any queued request
for (Entry<IDMContext, DataRequestMonitor<ILoadInfo>> e :
fLoadInfoRequestCache.entrySet()) {
processLoads(e.getKey(), e.getValue(), fCachedLoads);
}
fLoadInfoRequestCache.clear();
}
});
}
},
LOAD_SAMPLE_DELAY,
TimeUnit.MILLISECONDS);
}
});
// Local debugging? Then we can read /proc/stat directly
} else {
// Read /proc/stat file for the first time
try {
procStatParser.parseStatFile(statFile);
} catch (Exception e) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
fLoadRequestOngoing = false;
return;
}
// Read /proc/stat file again after a delay
getExecutor()
.schedule(
new Runnable() {
@Override
public void run() {
try {
procStatParser.parseStatFile(statFile);
} catch (Exception e) {
rm.done(
new Status(
IStatus.ERROR,
GdbPlugin.PLUGIN_ID,
INTERNAL_ERROR,
"Can't get load info for CPU",
null)); //$NON-NLS-1$
fLoadRequestOngoing = false;
return;
}
// compute load
fCachedLoads = procStatParser.getCpuLoad();
processLoads(context, rm, fCachedLoads);
// done with request
fLoadRequestOngoing = false;
// process any queued request
for (Entry<IDMContext, DataRequestMonitor<ILoadInfo>> e :
fLoadInfoRequestCache.entrySet()) {
processLoads(e.getKey(), e.getValue(), fCachedLoads);
}
fLoadInfoRequestCache.clear();
}
},
LOAD_SAMPLE_DELAY,
TimeUnit.MILLISECONDS);
}
}
