stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8244679: JVM/TI GetCurrentContendedMonitor/contmon001 failed due to "(IsSameObject#3) unexpected monitor object: 0x000000562336DBA8"

Browse Source 
Reviewed-by: pchilanomate, dcubed, dholmes, sspitsyn
This commit is contained in:
Robbin Ehn 2020-11-16 13:06:45 +00:00
parent 8eeb36f14a
commit c5fe2c1fcb
2 changed files with 31 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
test/hotspot/jtreg/vmTestbase/nsk/jvmti/GetCurrentContendedMonitor/contmon001.java
View File

@ -23,7 +23,6 @@
package nsk.jvmti.GetCurrentContendedMonitor; package nsk.jvmti.GetCurrentContendedMonitor;
import nsk.share.Wicket;
import java.io.PrintStream; import java.io.PrintStream;
public class contmon001 { public class contmon001 {
@ -42,8 +41,8 @@ public class contmon001 {
} }
} }
public static Wicket startingBarrier; public static volatile boolean startingBarrier = true;
public static Wicket waitingBarrier; public static volatile boolean waitingBarrier = true;
static Object lockFld = new Object(); static Object lockFld = new Object();
static boolean DEBUG_MODE = false; static boolean DEBUG_MODE = false;
@ -55,6 +54,14 @@ public class contmon001 {
System.exit(run(args, System.out) + 95/*STATUS_TEMP*/); System.exit(run(args, System.out) + 95/*STATUS_TEMP*/);
} }
public static void doSleep() {
try {
Thread.sleep(10);
} catch (Exception e) {
throw new Error("Unexpected " + e);
}
}
public static int run(String argv[], PrintStream ref) { public static int run(String argv[], PrintStream ref) {
out = ref; out = ref;
for (int i = 0; i < argv.length; i++) { for (int i = 0; i < argv.length; i++) {
@ -75,13 +82,13 @@ public class contmon001 {
out.println("Check #1 done"); out.println("Check #1 done");
contmon001a thr = new contmon001a(); contmon001a thr = new contmon001a();
startingBarrier = new Wicket();
waitingBarrier = new Wicket();
thr.start(); thr.start();
if (DEBUG_MODE) if (DEBUG_MODE)
out.println("\nWaiting for auxiliary thread ..."); out.println("\nWaiting for auxiliary thread ...");
startingBarrier.waitFor(); while (startingBarrier) {
doSleep();
}
if (DEBUG_MODE) if (DEBUG_MODE)
out.println("Auxiliary thread is ready"); out.println("Auxiliary thread is ready");
@ -93,7 +100,9 @@ public class contmon001 {
thr.letItGo(); thr.letItGo();
waitingBarrier.waitFor(); while (waitingBarrier) {
doSleep();
}
synchronized (lockFld) { synchronized (lockFld) {
if (DEBUG_MODE) if (DEBUG_MODE)
out.println("\nMain thread entered lockFld's monitor" out.println("\nMain thread entered lockFld's monitor"
@ -138,7 +147,7 @@ class contmon001a extends Thread {
if (contmon001.DEBUG_MODE) if (contmon001.DEBUG_MODE)
contmon001.out.println("notifying main thread"); contmon001.out.println("notifying main thread");
contmon001.startingBarrier.unlock(); contmon001.startingBarrier = false;
if (contmon001.DEBUG_MODE) if (contmon001.DEBUG_MODE)
contmon001.out.println("thread is going to loop while <flag> is true ..."); contmon001.out.println("thread is going to loop while <flag> is true ...");
@ -158,7 +167,7 @@ class contmon001a extends Thread {
contmon001.out.println("looping is done: <flag> is false"); contmon001.out.println("looping is done: <flag> is false");
synchronized (contmon001.lockFld) { synchronized (contmon001.lockFld) {
contmon001.waitingBarrier.unlock(); contmon001.waitingBarrier = false;
if (contmon001.DEBUG_MODE) if (contmon001.DEBUG_MODE)
contmon001.out.println("\nthread entered lockFld's monitor" contmon001.out.println("\nthread entered lockFld's monitor"
+ "\n\tand releasing it through the lockFld.wait() call"); + "\n\tand releasing it through the lockFld.wait() call");

18
test/hotspot/jtreg/vmTestbase/nsk/jvmti/GetCurrentContendedMonitor/contmon002.java
View File

@ -23,7 +23,6 @@
package nsk.jvmti.GetCurrentContendedMonitor; package nsk.jvmti.GetCurrentContendedMonitor;
import nsk.share.Wicket;
import java.io.PrintStream; import java.io.PrintStream;
public class contmon002 { public class contmon002 {
@ -42,7 +41,7 @@ public class contmon002 {
} }
} }
public static Wicket startingBarrier; public static boolean startingBarrier = true;
public static void main(String[] args) { public static void main(String[] args) {
args = nsk.share.jvmti.JVMTITest.commonInit(args); args = nsk.share.jvmti.JVMTITest.commonInit(args);
@ -50,13 +49,22 @@ public class contmon002 {
System.exit(run(args, System.out) + 95/*STATUS_TEMP*/); System.exit(run(args, System.out) + 95/*STATUS_TEMP*/);
} }
public static void doSleep() {
try {
Thread.sleep(10);
} catch (Exception e) {
throw new Error("Unexpected " + e);
}
}
public static int run(String argv[], PrintStream ref) { public static int run(String argv[], PrintStream ref) {
checkMon(1, Thread.currentThread()); checkMon(1, Thread.currentThread());
contmon002a thr = new contmon002a(); contmon002a thr = new contmon002a();
startingBarrier = new Wicket();
thr.start(); thr.start();
startingBarrier.waitFor(); while (startingBarrier) {
doSleep();
}
checkMon(2, thr); checkMon(2, thr);
thr.letItGo(); thr.letItGo();
try { try {
@ -73,7 +81,7 @@ class contmon002a extends Thread {
private volatile boolean flag = true; private volatile boolean flag = true;
private synchronized void meth() { private synchronized void meth() {
contmon002.startingBarrier.unlock(); contmon002.startingBarrier = false;
int i = 0; int i = 0;
int n = 1000; int n = 1000;
while (flag) { while (flag) {