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6952105: TEST_BUG: testcase failure, not very often, com/sun/jdi/SuspendThreadTest.java

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Reviewed-by: dholmes, sspitsyn, dsamersoff
This commit is contained in:
Staffan Larsen 2014-02-21 16:26:22 +01:00
parent 70f2238ba9
commit 3d29dc96b0
1 changed files with 28 additions and 18 deletions
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46
jdk/test/com/sun/jdi/SuspendThreadTest.java
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@ -36,7 +36,6 @@ import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import java.util.*;
/********** target program **********/
@ -78,7 +77,11 @@ public class SuspendThreadTest extends TestScaffold {
// 1000 makes the test take over 2 mins on win32
static int maxBkpts = 200;
int bkptCount;
volatile int bkptCount;
// to guard against spurious wakeups from bkptSignal.wait()
boolean signalSent;
// signal that a breakpoint has happened
Object bkptSignal = new Object() {};
BreakpointRequest bkptRequest;
Field debuggeeCountField;
@ -99,8 +102,12 @@ public class SuspendThreadTest extends TestScaffold {
// The main thread watchs the bkptCount to
// see if bkpts stop coming in. The
// test _should_ fail well before maxBkpts bkpts.
if (bkptCount++ < maxBkpts) {
bkptRequest.enable();
synchronized (bkptSignal) {
if (bkptCount++ < maxBkpts) {
bkptRequest.enable();
}
signalSent = true;
bkptSignal.notifyAll();
}
}
@ -130,29 +137,32 @@ public class SuspendThreadTest extends TestScaffold {
debuggeeCountField = targetClass.fieldByName("count");
try {
addListener (this);
} catch (Exception ex){
ex.printStackTrace();
failure("failure: Could not add listener");
throw new Exception("SuspendThreadTest: failed");
throw new Exception("SuspendThreadTest: failed", ex);
}
int prevBkptCount;
vm().resume();
while (bkptCount < maxBkpts) {
prevBkptCount = bkptCount;
// If we don't get a bkpt within 5 secs,
// the test fails
try {
Thread.sleep(5000);
} catch (InterruptedException ee) {
synchronized (bkptSignal) {
while (bkptCount < maxBkpts) {
prevBkptCount = bkptCount;
// If we don't get a bkpt within 5 secs,
// the test fails
signalSent = false;
do {
try {
bkptSignal.wait(5000);
} catch (InterruptedException ee) {
}
} while (signalSent == false);
if (prevBkptCount == bkptCount) {
failure("failure: test hung");
break;
}
}
if (prevBkptCount == bkptCount) {
failure("failure: test hung");
break;
}
prevBkptCount = bkptCount;
}
println("done with loop");
bkptRequest.disable();