/*
* Minha.pt: middleware testing platform.
* Copyright (c) 2011-2014, Universidade do Minho.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package pt.minha.models.fake.java.io;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import pt.minha.models.global.disk.Storage;
import pt.minha.models.local.lang.SimulationThread;
public class FileInputStream extends InputStream {
private final java.io.FileInputStream impl;
private final Storage storage;
public FileInputStream(String name) throws FileNotFoundException {
this.storage = SimulationThread.currentSimulationThread().getProcess().getStorage();
this.impl = new java.io.FileInputStream(storage.translate(name));
}
public FileInputStream(File file) throws FileNotFoundException {
this(file.getAbsolutePath());
}
public int read() throws IOException {
try {
SimulationThread.stopTime(0);
readDelay(1);
return this.impl.read();
} finally {
SimulationThread.startTime(storage.getConfig().getIOOverhead(1));
}
}
public int read(byte[] b) throws IOException {
return this.read(b, 0, b.length);
}
public int read(byte[] b, int off, int len) throws IOException{
try {
SimulationThread.stopTime(0);
readDelay(len);
return this.impl.read(b, off, len);
} finally {
SimulationThread.startTime(storage.getConfig().getIOOverhead(len));
}
}
public FileDescriptor getFD() throws IOException{
return new FileDescriptor(this.impl.getFD(), null);
}
public void close() throws IOException {
this.impl.close();
}
private void readDelay(int size) {
SimulationThread current = SimulationThread.currentSimulationThread();
long qdelay = storage.scheduleRead(size);
current.idle(qdelay, false, false);
}
}