/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.lang.reflect.*;
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public class SigQuit implements Runnable {
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private final static int sigquit;
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private final static Method kill;
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private final static int pid;
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static {
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int pidTemp = -1;
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int sigquitTemp = -1;
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Method killTemp = null;
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try {
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Class<?> osClass = Class.forName("android.system.Os");
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Method getpid = osClass.getDeclaredMethod("getpid");
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pidTemp = (Integer) getpid.invoke(null);
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Class<?> osConstants = Class.forName("android.system.OsConstants");
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Field sigquitField = osConstants.getDeclaredField("SIGQUIT");
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sigquitTemp = (Integer) sigquitField.get(null);
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killTemp = osClass.getDeclaredMethod("kill", int.class, int.class);
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} catch (Exception e) {
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if (!e.getClass().getName().equals("ErrnoException")) {
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e.printStackTrace(System.out);
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}
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}
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pid = pidTemp;
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sigquit = sigquitTemp;
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kill = killTemp;
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}
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public boolean perform() {
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try {
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kill.invoke(null, pid, sigquit);
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} catch (Exception e) {
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if (!e.getClass().getName().equals("ErrnoException")) {
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e.printStackTrace(System.out);
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}
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}
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return true;
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}
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public void run() {
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long endTime = System.currentTimeMillis() + 5000;
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System.out.println("Performing sigquits for 5 seconds");
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while (System.currentTimeMillis() < endTime) {
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perform();
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}
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}
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}
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