| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed 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 com.intellij.debugger.engine; |
| |
| import com.intellij.debugger.jdi.ThreadReferenceProxyImpl; |
| import com.intellij.openapi.diagnostic.Logger; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class SuspendManagerUtil { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.debugger.engine.SuspendManagerUtil"); |
| |
| public static boolean isEvaluating(SuspendManager suspendManager, ThreadReferenceProxyImpl thread) { |
| for (SuspendContextImpl suspendContext : suspendManager.getEventContexts()) { |
| if (suspendContext.isEvaluating() && thread.equals(suspendContext.getThread())) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static SuspendContextImpl findContextByThread(SuspendManager suspendManager, ThreadReferenceProxyImpl thread) { |
| for (SuspendContextImpl context : ((SuspendManagerImpl)suspendManager).getPausedContexts()) { |
| if (context.getThread() == thread) { |
| return context; |
| } |
| } |
| |
| return null; |
| } |
| |
| public static void assertSuspendContext(SuspendContextImpl context) { |
| if(LOG.isDebugEnabled()) { |
| LOG.assertTrue(context.myInProgress, "You can invoke methods only inside commands invoked for SuspendContext"); |
| } |
| } |
| |
| public static Set<SuspendContextImpl> getSuspendingContexts(SuspendManager suspendManager, ThreadReferenceProxyImpl thread) { |
| DebuggerManagerThreadImpl.assertIsManagerThread(); |
| final Set<SuspendContextImpl> result = new HashSet<SuspendContextImpl>(); |
| for (final SuspendContextImpl suspendContext : suspendManager.getEventContexts()) { |
| if (suspendContext.suspends(thread)) { |
| result.add(suspendContext); |
| } |
| } |
| return result; |
| } |
| |
| public static void restoreAfterResume(SuspendContextImpl context, Object resumeData) { |
| SuspendManager suspendManager = context.getDebugProcess().getSuspendManager(); |
| ResumeData data = (ResumeData) resumeData; |
| |
| ThreadReferenceProxyImpl thread = context.getThread(); |
| if(data.myIsFrozen && !suspendManager.isFrozen(thread)) { |
| suspendManager.freezeThread(thread); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("RestoreAfterResume SuspendContextImpl..."); |
| } |
| LOG.assertTrue(context.myResumedThreads == null); |
| |
| if(data.myResumedThreads != null) { |
| for (ThreadReferenceProxyImpl resumedThreads : data.myResumedThreads) { |
| resumedThreads.resume(); |
| } |
| context.myResumedThreads = data.myResumedThreads; |
| } |
| } |
| |
| public static Object prepareForResume(SuspendContextImpl context) { |
| SuspendManager suspendManager = context.getDebugProcess().getSuspendManager(); |
| |
| ThreadReferenceProxyImpl thread = context.getThread(); |
| |
| ResumeData resumeData = new ResumeData(suspendManager.isFrozen(thread), context.myResumedThreads); |
| |
| if(resumeData.myIsFrozen) { |
| suspendManager.unfreezeThread(thread); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Resuming SuspendContextImpl..."); |
| } |
| if(context.myResumedThreads != null) { |
| for (ThreadReferenceProxyImpl resumedThreads : context.myResumedThreads) { |
| resumedThreads.suspend(); |
| } |
| context.myResumedThreads = null; |
| } |
| |
| return resumeData; |
| } |
| |
| public static SuspendContextImpl getSuspendContextForThread(SuspendContextImpl suspendContext, ThreadReferenceProxyImpl thread) { |
| if (suspendContext == null) { |
| return null; |
| } |
| SuspendContextImpl context = findContextByThread(suspendContext.getDebugProcess().getSuspendManager(), thread); |
| return context != null && !context.myInProgress ? context : suspendContext; |
| } |
| |
| public static SuspendContextImpl getEvaluatingContext(SuspendManager suspendManager, ThreadReferenceProxyImpl thread) { |
| for (SuspendContextImpl suspendContext : suspendManager.getEventContexts()) { |
| if (!suspendContext.isResumed() && suspendContext.isEvaluating() && suspendContext.getThread() == thread) { |
| return suspendContext; |
| } |
| } |
| return null; |
| } |
| |
| private static class ResumeData { |
| final boolean myIsFrozen; |
| final Set<ThreadReferenceProxyImpl> myResumedThreads; |
| |
| public ResumeData(boolean isFrozen, Set<ThreadReferenceProxyImpl> resumedThreads) { |
| myIsFrozen = isFrozen; |
| myResumedThreads = resumedThreads; |
| } |
| } |
| } |