com.intellij.util.io.storage.HeavyProcessLatch Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of util Show documentation
Show all versions of util Show documentation
A packaging of the IntelliJ Community Edition util library.
This is release number 1 of trunk branch 142.
The newest version!
/*
* Copyright 2000-2014 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.
*/
/*
* @author max
*/
package com.intellij.util.io.storage;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.application.AccessToken;
import com.intellij.util.EventDispatcher;
import gnu.trove.THashSet;
import org.jetbrains.annotations.NotNull;
import java.util.EventListener;
import java.util.Set;
public class HeavyProcessLatch {
public static final HeavyProcessLatch INSTANCE = new HeavyProcessLatch();
private final Set myHeavyProcesses = new THashSet();
private final EventDispatcher myEventDispatcher = EventDispatcher.create(HeavyProcessListener.class);
private HeavyProcessLatch() {
}
/**
* @deprecated use {@link #processStarted(java.lang.String)} instead
*/
@Deprecated
public void processStarted() {
processStarted("");
}
@NotNull
public AccessToken processStarted(@NotNull final String operationName) {
synchronized (myHeavyProcesses) {
myHeavyProcesses.add(operationName);
}
myEventDispatcher.getMulticaster().processStarted();
return new AccessToken() {
@Override
public void finish() {
synchronized (myHeavyProcesses) {
myHeavyProcesses.remove(operationName);
}
}
};
}
@Deprecated // use processStarted(String)
public void processFinished() {
synchronized (myHeavyProcesses) {
myHeavyProcesses.remove("");
}
myEventDispatcher.getMulticaster().processFinished();
}
public boolean isRunning() {
synchronized (myHeavyProcesses) {
return !myHeavyProcesses.isEmpty();
}
}
public String getRunningOperationName() {
synchronized (myHeavyProcesses) {
return myHeavyProcesses.isEmpty() ? null : myHeavyProcesses.iterator().next();
}
}
public interface HeavyProcessListener extends EventListener {
public void processStarted();
public void processFinished();
}
public void addListener(@NotNull Disposable parentDisposable, @NotNull HeavyProcessListener listener) {
myEventDispatcher.addListener(listener, parentDisposable);
}
}