| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.netbeans.modules.debugger.jpda.backend.truffle; |
| |
| import com.oracle.truffle.api.debug.Breakpoint; |
| import com.oracle.truffle.api.debug.Debugger; |
| import com.oracle.truffle.api.debug.DebuggerSession; |
| import com.oracle.truffle.api.debug.SuspendAnchor; |
| import com.oracle.truffle.api.debug.SuspendedCallback; |
| import com.oracle.truffle.api.debug.SuspendedEvent; |
| import com.oracle.truffle.api.debug.SuspensionFilter; |
| import com.oracle.truffle.api.nodes.Node; |
| |
| import java.lang.ref.Reference; |
| import java.lang.ref.WeakReference; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * |
| * @author martin |
| */ |
| class JPDATruffleDebugManager implements SuspendedCallback { |
| |
| private final Reference<Debugger> debugger; |
| private final Reference<DebuggerSession> session; |
| private final ThreadLocal<SuspendedEvent> suspendedEvents = new ThreadLocal<>(); |
| private final ThreadLocal<Object[]> suspendHere = new ThreadLocal<>(); |
| private final boolean supportsJavaFrames; |
| |
| public JPDATruffleDebugManager(Debugger debugger, boolean includeInternal, boolean doStepInto) { |
| this.debugger = new WeakReference<>(debugger); |
| DebuggerSession debuggerSession = debugger.startSession(this); |
| debuggerSession.setSteppingFilter(createSteppingFilter(includeInternal)); |
| supportsJavaFrames = supportsJavaFrames(debuggerSession); |
| if (doStepInto) { |
| debuggerSession.suspendNextExecution(); |
| } |
| this.session = new WeakReference<>(debuggerSession); |
| } |
| |
| private static boolean supportsJavaFrames(DebuggerSession debuggerSession) { |
| try { |
| Method setShowHostStackFramesMethod = DebuggerSession.class.getMethod("setShowHostStackFrames", Boolean.TYPE); |
| try { |
| setShowHostStackFramesMethod.invoke(debuggerSession, true); |
| return true; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) { |
| LangErrors.exception("setShowHostStackFrames", ex); |
| return false; |
| } |
| } catch (NoSuchMethodException | SecurityException ex) { |
| return false; |
| } |
| } |
| |
| static SuspensionFilter createSteppingFilter(boolean includeInternal) { |
| return SuspensionFilter.newBuilder().ignoreLanguageContextInitialization(true).includeInternal(includeInternal).build(); |
| } |
| |
| Debugger getDebugger() { |
| return debugger.get(); |
| } |
| |
| DebuggerSession getDebuggerSession() { |
| return session.get(); |
| } |
| |
| SuspendedEvent getCurrentSuspendedEvent() { |
| return suspendedEvents.get(); |
| } |
| |
| void dispose() { |
| DebuggerSession ds = session.get(); |
| if (ds != null) { |
| ds.close(); |
| session.clear(); |
| } |
| } |
| |
| void prepareExecStepInto() { |
| session.get().suspendNextExecution(); |
| } |
| |
| void prepareExecContinue() { |
| //System.err.println("prepareExecContinue()..."); |
| // TODO: HOW? |
| //prepareStepInto = false; |
| // Do not call methods on ExecutionEvent asynchronously. |
| /* Rely on another ExecutionEvent comes when needed |
| try { |
| execEvent.prepareContinue(); |
| } catch (RuntimeException rex) { |
| // Unable to use the event any more. A new should come when needed. |
| // Report until there is some known contract: |
| System.err.println("Ignoring prepareExecContinue():"); |
| rex.printStackTrace(); |
| } |
| */ |
| //System.err.println("prepareExecContinue() DONE."); |
| } |
| |
| @Override |
| public void onSuspend(SuspendedEvent event) { |
| JPDATruffleAccessor.trace("JPDATruffleDebugManager.onSuspend({0})", event); |
| if (suspendHere.get() != null) { |
| // A special 'suspendHere': |
| SourcePosition position = new SourcePosition(event.getSourceSection(), event.getTopStackFrame().getLanguage()); |
| Object[] haltInfo = new Object[]{ |
| this, position, |
| event.getSuspendAnchor() == SuspendAnchor.BEFORE, |
| event.getReturnValue(), |
| new FrameInfo(event.getTopStackFrame(), event.getStackFrames(), supportsJavaFrames), |
| supportsJavaFrames |
| }; |
| suspendHere.set(haltInfo); |
| return ; |
| } |
| Breakpoint[] breakpointsHit = new Breakpoint[event.getBreakpoints().size()]; |
| breakpointsHit = event.getBreakpoints().toArray(breakpointsHit); |
| Throwable[] breakpointConditionExceptions = new Throwable[breakpointsHit.length]; |
| for (int i = 0; i < breakpointsHit.length; i++) { |
| breakpointConditionExceptions[i] = event.getBreakpointConditionException(breakpointsHit[i]); |
| } |
| suspendedEvents.set(event); |
| try { |
| SourcePosition position = new SourcePosition(event.getSourceSection(), event.getTopStackFrame().getLanguage()); |
| int stepCmd = JPDATruffleAccessor.executionHalted( |
| this, position, |
| event.getSuspendAnchor() == SuspendAnchor.BEFORE, |
| event.getReturnValue(), |
| new FrameInfo(event.getTopStackFrame(), event.getStackFrames(), supportsJavaFrames), |
| supportsJavaFrames, |
| breakpointsHit, |
| breakpointConditionExceptions, |
| 0); |
| switch (stepCmd) { |
| case -1: break; |
| case 0: event.prepareContinue(); |
| break; |
| case 1: event.prepareStepInto(1); |
| break; |
| case 2: event.prepareStepOver(1); |
| break; |
| case 3: event.prepareStepOut(1); |
| break; |
| default: |
| throw new IllegalStateException("Unknown step command: "+stepCmd); |
| } |
| } finally { |
| suspendedEvents.remove(); |
| } |
| } |
| |
| Object[] suspendHere() { |
| DebuggerSession debuggerSession = session.get(); |
| if (debuggerSession == null) { |
| return null; |
| } |
| try { |
| Method suspendHereMethod = DebuggerSession.class.getMethod("suspendHere", Node.class); |
| try { |
| suspendHere.set(new Object[]{}); |
| boolean success = (Boolean) suspendHereMethod.invoke(debuggerSession, new Object[]{null}); |
| if (success) { |
| return suspendHere.get(); |
| } |
| } finally { |
| suspendHere.remove(); |
| } |
| } catch (NoSuchMethodException ex) { |
| } catch (SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) { |
| LangErrors.exception("suspendHere", ex); |
| } |
| return null; |
| } |
| |
| } |