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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* under the terms of the GNU General Public License version 2 only , as
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*
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* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
package compiler.c1;
import java.io.IOException;
import java.io.InterruptedIOException;
/*
* @ test
* @ author Chris Cole
* @ bug 8267042
* @ summary missing displaced_header initialization causes hangup
* @ run main / othervm - XX : + TieredCompilation - XX : TieredStopAtLevel = 1
* - XX : - BackgroundCompilation - XX : CompileThreshold = 1
* - XX : CompileOnly = compiler . c1 . Test8267042 : : write
* compiler . c1 . Test8267042
*/
public class Test8267042 {
private static int DATA_SIZE = 4 ;
private char buffer;
private boolean empty = true ;
public static void main(String[] args) {
Test8267042 test = new Test8267042();
test.run();
}
private void run() {
System.out.println("Starting test" );
Thread writeThread = new Thread (new Runnable() {
@Override
public void run() {
char data[] = new char [DATA_SIZE];
try {
write(data, 0 , data.length);
} catch (IOException e) {
e.printStackTrace();
}
}
});
writeThread.setDaemon(true );
writeThread.start();
Thread readThread = new Thread (new Runnable() {
@Override
public void run() {
try {
for (int i = 0 ; i < DATA_SIZE; i++) {
read();
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
readThread.setDaemon(true );
readThread.start();
try {
writeThread.join(5000 );
if (writeThread.isAlive()) {
throw new InternalError("write thread deadlocked" );
}
readThread.join(5000 );
if (readThread.isAlive()) {
throw new InternalError("read thread deadlocked" );
}
} catch (InterruptedException e) {
throw new InternalError("unexpected InterrruptedException while waiting to join threads" , e);
}
System.out.println("Test passed" );
}
synchronized void write(char data[], int offset, int length) throws IOException {
while (--length >= 0 ) {
getZeroOnStack(offset);
write(data[offset++]);
}
}
synchronized void write(int c) throws IOException {
while (!empty) {
try {
wait(1000 );
} catch (InterruptedException e) {
throw new InterruptedIOException();
}
}
buffer = (char ) c;
empty = false ;
notifyAll();
}
public synchronized int read() throws IOException {
while (empty) {
try {
System.out.println("read() before wait" );
wait(1000 );
System.out.println("read() after wait" );
} catch (InterruptedException e) {
throw new InterruptedIOException();
}
}
int value = buffer;
empty = true ;
notifyAll();
return value;
}
private void getZeroOnStack(int offset) {
int l1;
int l2;
int l3;
int l4;
int l5;
int l6;
int l7;
int l8;
int l9;
int l10;
int l11;
int l12;
int l13;
int l14;
int l15;
int l16;
l1 = 0 ;
l2 = 0 ;
l3 = 0 ;
l4 = 0 ;
l5 = 0 ;
l6 = 0 ;
l7 = 0 ;
l8 = 0 ;
l9 = 0 ;
l10 = 0 ;
l11 = 0 ;
l12 = 0 ;
l13 = 0 ;
l14 = 0 ;
l15 = 0 ;
l16 = 0 ;
}
}
Messung V0.5 in Prozent C=93 H=98 G=95
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
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