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/*******************************************************************************
* Copyright (c) 2016 Ericsson and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Ericsson - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.ui.memory;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.cdt.debug.core.model.IMemoryBlockAddressInfoRetrieval;
import org.eclipse.cdt.dsf.concurrent.CountingRequestMonitor;
import org.eclipse.cdt.dsf.concurrent.DataRequestMonitor;
import org.eclipse.cdt.dsf.concurrent.DsfRunnable;
import org.eclipse.cdt.dsf.datamodel.DMContexts;
import org.eclipse.cdt.dsf.datamodel.IDMContext;
import org.eclipse.cdt.dsf.debug.model.DsfMemoryBlock;
import org.eclipse.cdt.dsf.debug.service.IExpressions.IExpressionChangedDMEvent;
import org.eclipse.cdt.dsf.debug.service.IRegisters.IRegisterChangedDMEvent;
import org.eclipse.cdt.dsf.debug.service.IRunControl.IContainerDMContext;
import org.eclipse.cdt.dsf.debug.service.IStack.IFrameDMContext;
import org.eclipse.cdt.dsf.gdb.internal.memory.GdbMemoryAddressInfoRegistersRetrieval;
import org.eclipse.cdt.dsf.gdb.internal.memory.GdbMemoryAddressInfoVariablesRetrieval;
import org.eclipse.cdt.dsf.gdb.memory.IGdbMemoryAddressInfoTypeRetrieval;
import org.eclipse.cdt.dsf.service.DsfServiceEventHandler;
import org.eclipse.cdt.dsf.service.DsfSession;
import org.eclipse.cdt.dsf.ui.viewmodel.datamodel.IDMVMContext;
import org.eclipse.debug.core.model.IMemoryBlock;
public class GdbMemoryBlockAddressInfoRetrieval implements IMemoryBlockAddressInfoRetrieval {
private final DsfSession fSession;
private final Set<IAddressInfoUpdateListener> fListeners = new HashSet<>();
public GdbMemoryBlockAddressInfoRetrieval(DsfSession session) {
fSession = session;
fSession.getExecutor().execute(new DsfRunnable() {
@Override
public void run() {
fSession.addServiceEventListener(GdbMemoryBlockAddressInfoRetrieval.this, null);
}
});
}
protected IGdbMemoryAddressInfoTypeRetrieval[] resolveMemoryAddressInfoProviders() {
return new IGdbMemoryAddressInfoTypeRetrieval[] { new GdbMemoryAddressInfoVariablesRetrieval(fSession),
new GdbMemoryAddressInfoRegistersRetrieval(fSession) };
}
@Override
public void getMemoryBlockAddressInfo(Object selection, final IMemoryBlock memBlock,
final IGetMemoryBlockAddressInfoReq request) {
IDMContext memBlockContext = null;
if (memBlock instanceof DsfMemoryBlock) {
memBlockContext = ((DsfMemoryBlock) memBlock).getContext();
if (selection instanceof IDMVMContext) {
IDMContext context = ((IDMVMContext) selection).getDMContext();
final IFrameDMContext frameCtx = DMContexts.getAncestorOfType(context, IFrameDMContext.class);
if (frameCtx != null) {
// Resolve container context of selection
IContainerDMContext selectedContainerCtx = DMContexts.getAncestorOfType(frameCtx,
IContainerDMContext.class);
// Resolve container context of memory block
IContainerDMContext memoryContainerCtx = DMContexts.getAncestorOfType(memBlockContext,
IContainerDMContext.class);
// Continue if the selected container matches the container for the memory context
if (memoryContainerCtx != null && memoryContainerCtx.equals(selectedContainerCtx)) {
fSession.getExecutor().execute(new DsfRunnable() {
@Override
public void run() {
// Resolve the memory address info providers
IGdbMemoryAddressInfoTypeRetrieval[] infoTypeProviders = resolveMemoryAddressInfoProviders();
if (infoTypeProviders == null || infoTypeProviders.length == 0) {
// No providers available
request.done();
return;
}
final CountingRequestMonitor crm = new CountingRequestMonitor(fSession.getExecutor(),
null) {
// mark the request done when all available infoTypeProviders have
// returned its information
@Override
protected void handleCompleted() {
request.done();
}
};
for (final IGdbMemoryAddressInfoTypeRetrieval infoProvider : infoTypeProviders) {
infoProvider.itemsRequest(frameCtx, memBlock,
new DataRequestMonitor<IMemoryBlockAddressInfoItem[]>(
fSession.getExecutor(), crm) {
@Override
protected void handleCompleted() {
if (isSuccess()) {
// Load the information from this provider
request.setAddressInfoItems(infoProvider.getInfoType(),
getData());
} else {
request.setStatus(getStatus());
}
crm.done();
}
});
}
crm.setDoneCount(infoTypeProviders.length);
}
});
} else {
request.done();
}
} else {
// The selection context does not match the block memory context,
// Simply close the request
request.done();
}
} else {
request.done();
}
} else {
request.done();
}
}
// The GdbSessionAdapters class will call this method automatically when it cleans up
public void dispose() {
fListeners.clear();
}
@Override
public void addAddressInfoUpdateListener(IAddressInfoUpdateListener listener) {
synchronized (fListeners) {
fListeners.add(listener);
}
}
@Override
public void removeAddressInfoUpdateListener(IAddressInfoUpdateListener listener) {
synchronized (fListeners) {
fListeners.remove(listener);
}
}
@DsfServiceEventHandler
public void eventDispatched(IRegisterChangedDMEvent e) {
synchronized (fListeners) {
for (IAddressInfoUpdateListener listener : fListeners) {
listener.handleAddressInfoUpdate(EventType.VALUE_CHANGED, null);
}
}
}
@DsfServiceEventHandler
public void eventDispatched(IExpressionChangedDMEvent e) {
synchronized (fListeners) {
for (IAddressInfoUpdateListener listener : fListeners) {
listener.handleAddressInfoUpdate(EventType.VALUE_CHANGED, null);
}
}
}
}
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