diff options
Diffstat (limited to 'plugins/org.eclipse.tcf.debug/src/org/eclipse/tcf/internal/debug/actions/TCFActionStepOut.java')
| -rw-r--r-- | plugins/org.eclipse.tcf.debug/src/org/eclipse/tcf/internal/debug/actions/TCFActionStepOut.java | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/plugins/org.eclipse.tcf.debug/src/org/eclipse/tcf/internal/debug/actions/TCFActionStepOut.java b/plugins/org.eclipse.tcf.debug/src/org/eclipse/tcf/internal/debug/actions/TCFActionStepOut.java new file mode 100644 index 000000000..3656395cc --- /dev/null +++ b/plugins/org.eclipse.tcf.debug/src/org/eclipse/tcf/internal/debug/actions/TCFActionStepOut.java @@ -0,0 +1,216 @@ +/******************************************************************************* + * Copyright (c) 2010 Wind River Systems, Inc. and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Wind River Systems - initial API and implementation + *******************************************************************************/ +package org.eclipse.tm.internal.tcf.debug.actions; + +import java.math.BigInteger; +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; + +import org.eclipse.tm.internal.tcf.debug.model.TCFContextState; +import org.eclipse.tm.internal.tcf.debug.model.TCFLaunch; +import org.eclipse.tm.tcf.protocol.IToken; +import org.eclipse.tm.tcf.protocol.JSON; +import org.eclipse.tm.tcf.protocol.Protocol; +import org.eclipse.tm.tcf.services.IBreakpoints; +import org.eclipse.tm.tcf.services.IRunControl; +import org.eclipse.tm.tcf.services.IStackTrace; +import org.eclipse.tm.tcf.services.IRunControl.RunControlContext; +import org.eclipse.tm.tcf.util.TCFDataCache; + +public abstract class TCFActionStepOut extends TCFAction implements IRunControl.RunControlListener { + + private final boolean step_back; + private final IRunControl rc = launch.getService(IRunControl.class); + private final IBreakpoints bps = launch.getService(IBreakpoints.class); + + private IRunControl.RunControlContext ctx; + private TCFDataCache<TCFContextState> state; + private int step_cnt; + private Map<String,Object> bp; + + protected boolean exited; + + public TCFActionStepOut(TCFLaunch launch, IRunControl.RunControlContext ctx, boolean step_back) { + super(launch, ctx.getID()); + this.ctx = ctx; + this.step_back = step_back; + } + + protected abstract TCFDataCache<TCFContextState> getContextState(); + protected abstract TCFDataCache<?> getStackTrace(); + protected abstract TCFDataCache<IStackTrace.StackTraceContext> getStackFrame(); + protected abstract int getStackFrameIndex(); + + public void run() { + if (exited) return; + try { + runAction(); + } + catch (Throwable x) { + exit(x); + } + } + + private void runAction() { + if (aborted) { + exit(null); + return; + } + if (state == null) { + rc.addListener(this); + state = getContextState(); + if (state == null) { + exit(new Exception("Invalid context ID")); + return; + } + } + if (!state.validate(this)) return; + if (state.getData() == null || !state.getData().is_suspended) { + Throwable error = state.getError(); + if (error == null) error = new Exception("Context is not suspended"); + exit(error); + return; + } + TCFDataCache<?> stack_trace = getStackTrace(); + if (!stack_trace.validate(this)) return; + int frame_index = getStackFrameIndex(); + if (step_cnt > 0) { + TCFContextState state_data = state.getData(); + boolean ok = isMyBreakpoint(state_data) || IRunControl.REASON_STEP.equals(state_data.suspend_reason); + if (!ok) exit(null, state_data.suspend_reason); + else if (frame_index < 0) exit(null); + if (exited) return; + } + int mode = step_back ? IRunControl.RM_REVERSE_STEP_OUT : IRunControl.RM_STEP_OUT; + if (ctx.canResume(mode)) { + int cnt = 1; + if (ctx.canCount(mode)) cnt += frame_index; + ctx.resume(mode, cnt, new IRunControl.DoneCommand() { + public void doneCommand(IToken token, Exception error) { + if (error != null) exit(error); + } + }); + step_cnt++; + return; + } + if (bps != null && ctx.canResume(step_back ? IRunControl.RM_REVERSE_RESUME : IRunControl.RM_RESUME)) { + if (bp == null) { + TCFDataCache<IStackTrace.StackTraceContext> frame = getStackFrame(); + if (!frame.validate(this)) return; + Number addr = null; + if (frame.getData() != null) addr = frame.getData().getReturnAddress(); + if (addr == null) { + exit(new Exception("Unknown stack frame return address")); + return; + } + if (step_back) { + BigInteger n = JSON.toBigInteger(addr); + addr = n.subtract(BigInteger.valueOf(1)); + } + String id = "Step." + ctx.getID(); + bp = new HashMap<String,Object>(); + bp.put(IBreakpoints.PROP_ID, id); + bp.put(IBreakpoints.PROP_LOCATION, addr.toString()); + bp.put(IBreakpoints.PROP_CONDITION, "$thread==\"" + ctx.getID() + "\""); + bp.put(IBreakpoints.PROP_ENABLED, Boolean.TRUE); + bps.add(bp, new IBreakpoints.DoneCommand() { + public void doneCommand(IToken token, Exception error) { + if (error != null) exit(error); + } + }); + } + ctx.resume(step_back ? IRunControl.RM_REVERSE_RESUME : IRunControl.RM_RESUME, 1, new IRunControl.DoneCommand() { + public void doneCommand(IToken token, Exception error) { + if (error != null) exit(error); + } + }); + step_cnt++; + return; + } + exit(new Exception("Step out is not supported")); + } + + protected void exit(Throwable error) { + exit(error, "Step Out"); + } + + protected void exit(Throwable error, String reason) { + if (exited) return; + if (bp != null) { + bps.remove(new String[]{ (String)bp.get(IBreakpoints.PROP_ID) }, new IBreakpoints.DoneCommand() { + public void doneCommand(IToken token, Exception error) { + } + }); + } + rc.removeListener(this); + exited = true; + if (error == null) setActionResult(getContextID(), reason); + else launch.removeContextActions(getContextID()); + done(); + } + + public void containerResumed(String[] context_ids) { + } + + public void containerSuspended(String context, String pc, + String reason, Map<String, Object> params, + String[] suspended_ids) { + for (String id : suspended_ids) { + if (!id.equals(context)) contextSuspended(id, null, null, null); + } + contextSuspended(context, pc, reason, params); + } + + public void contextAdded(RunControlContext[] contexts) { + } + + public void contextChanged(RunControlContext[] contexts) { + for (RunControlContext c : contexts) { + if (c.getID().equals(ctx.getID())) ctx = c; + } + } + + public void contextException(String context, String msg) { + if (context.equals(ctx.getID())) exit(new Exception(msg)); + } + + public void contextRemoved(String[] context_ids) { + for (String context : context_ids) { + if (context.equals(ctx.getID())) exit(null); + } + } + + public void contextResumed(String context) { + } + + public void contextSuspended(String context, String pc, String reason, Map<String,Object> params) { + if (!context.equals(ctx.getID())) return; + Protocol.invokeLater(this); + } + + private boolean isMyBreakpoint(TCFContextState state_data) { + if (bp == null) return false; + if (!IRunControl.REASON_BREAKPOINT.equals(state_data.suspend_reason)) return false; + if (state_data.suspend_params != null) { + Object ids = state_data.suspend_params.get(IRunControl.STATE_BREAKPOINT_IDS); + if (ids != null) { + @SuppressWarnings("unchecked") + Collection<String> c = (Collection<String>)ids; + if (c.contains(bp.get(IBreakpoints.PROP_ID))) return true; + } + } + if (state_data.suspend_pc == null) return false; + BigInteger x = new BigInteger(state_data.suspend_pc); + BigInteger y = new BigInteger((String)bp.get(IBreakpoints.PROP_LOCATION)); + return x.equals(y); + } +} |