P3
The following program causes initContext to core dump
package test;
class Lock {
int i;
synchronized void grab() {
wait();
}
synchronized void notify_it() {
notifyAll();
}
}
class Victim extends Thread {
Lock m_l;
int m_count;
Victim(Lock l, int count) {
m_l = l;
m_count = count;
}
public void run() {
while (true) {
//System.out.print(m_count);
m_l.grab();
}
}
}
class Notifier extends Thread {
Lock m_l;
Notifier(Lock l) {
m_l = l;
}
public void run() {
while(true) {
//System.out.print("n");
m_l.notify_it();
yield();
}
}
}
class Murderer extends Thread {
killnotify m_main;
Murderer(killnotify main) {
m_main = main;
}
public void run() {
while (true) {
Thread victim = m_main.getVictim();
if (victim != null) {
try {
victim.stop();
//System.out.println("!");
m_main.setVictim(null);
} catch (IllegalStateException e) {
//System.out.print("-");
yield();
}
} else {
sleep(100);
}
}
}
}
class killnotify extends Thread {
Thread m_victim;
public void run() {
int count = 0;
Lock l = new Lock();
Murderer m = new Murderer(this);
m.start();
Notifier n = new Notifier(l);
n.start();
while (true) {
try {
Thread v = getVictim();
if (v != null) v.stop();
} catch (IllegalStateException e) {
//System.out.println("*");
}
//System.out.print("v");
Victim v = new Victim(l, count++);
v.start();
sleep(50);
setVictim(v);
sleep(100);
}
}
public Thread getVictim() {
return m_victim;
}
public void setVictim(Thread victim) {
m_victim = victim;
}
public static void main(String args[]) {
killnotify self = new killnotify();
self.start();
}
}
The description field as copied from bug report 1191598 follows:
I was running server interpreters and was slowly running out of swap space
when I saw this core dump:
(dbx) where
[1] kill(0x0, 0x6, 0x1, 0xef73dcb0, 0xef740778, 0x3e8), at 0xef721830
[2] abort(0x27, 0x27, 0x3e8fe8, 0x3e7d08, 0x3e6e2c, 0xfcaf2800), at 0xef6ed7ec
=>[3] signalHandlerPanic(sig = 11, info = 0x3e70c8, uc = 0x3e6f08), line 403 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/interrupt_md.c"
---- called from signal handler with signal 11 (SIGSEGV) ------
[4] makecontext(), at 0xef6d660c
[5] initContext(tid = 0x4a7ec8, pc = 282312, death_func = &start_func(int dummy, int arg, void (*func)()) at 0x4af58, arg = 3086904), line 168 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/context.c"
[6] sysThreadCreate(stack_size = 65536, flags = 1, start = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8, ptid = 0x3e72c4, cookie = 0x2f1a38), line 154 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/threads_md.c"
[7] threadCreate(tid = 0x2f1a38, flags = 1, stack_size = 65536, func = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8), line 98 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/threads.c"
[8] java_lang_Thread_start(p = 0x2f1a38), line 75 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/lang/thread.c"
[9] java_lang_Thread_start_stub(_P_ = 0x3e9148, _EE_ = 0x3e8cbc), line 799 in "/net/acorn/work/java/build/solaris/java/JAVA/classstubs.c"
[10] invokeSynchronizedNativeMethod(o = 0x2f1a38, mb = 0x3a0890, args_size = 1, ee = 0x3e8cbc), line 201 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[11] ExecuteJava(initial_pc = 0x3e7bb2 "Õ", ee = 0x3e8cbc), line 1928 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[12] do_execute_java_method_vararg(ee = 0x3e8cbc, obj = 0x2ec5f0, method_name = 0xef5c3604 "selected", method_signature = 0xef5c3610 "()V", mb = (nil), isStaticCall = FALSE, args = 0x3e7ca4), line 418 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[13] execute_java_dynamic_method(ee = 0x3e8cbc, obj = 0x2ec5f0, method_name = 0xef5c3604 "selected", signature = 0xef5c3610 "()V", ...), line 194 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[14] TextField_changed(w = 0x432de8, client_data = 0x2ec5f0 "", s = 0x3e7d14), line 25 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_TextField.c"
[15] Activate(0x432de8, 0x3e80b0, 0x0, 0xef38f40c, 0xef38f41c, 0xef483d38), at 0xef483d68
[16] HandleActions(0x432de8, 0x3e80b0, 0x428f08, 0x0, 0x4978dc, 0xef38f404), at 0xef372000
[17] HandleSimpleState(0x1, 0x0, 0x1, 0x0, 0x0, 0x4978dc), at 0xef3725e4
[18] _XtTranslateEvent(0x432de8, 0x3e80b0, 0x0, 0x3e7f27, 0x0, 0x432e18), at 0xef372ba0
[19] DispatchEvent(0x3e80b0, 0x432de8, 0x1, 0x4, 0x0, 0x0), at 0xef355bdc
[20] DecideToDispatch(0x3e80b0, 0x3f22e4, 0x1, 0x432de8, 0x432de8, 0x0), at 0xef3562f0
[21] XtDispatchEvent(0x3e80b0, 0x0, 0x1, 0x0, 0x1, 0x3d3ac0), at 0xef3563d0
[22] XtAppProcessEvent(0x3d3ac0, 0x0, 0x3d3c8c, 0x3d3acc, 0x3d3c88, 0x1), at 0xef35ecfc
[23] awt_WServer_loop(wsdata = 0x3d4e00, poll = 0x3e82d4, isModal = 0), line 159 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_WServer.c"
[24] awt_WServer_eventLoop(this = 0x2eb818), line 185 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_WServer.c"
[25] awt_WServer_eventLoop_stub(_P_ = 0x3e9058, _EE_ = 0x3e8cbc), line 151 in "/net/acorn/work/java/build/solaris/awt/libstubs.c"
[26] invokeNativeMethod(o = 0x2eb818, mb = 0x3d69a8, args_size = 1, ee = 0x3e8cbc), line 180 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[27] invokeLazyNativeMethod(o = 0x2eb818, mb = 0x3d69a8, args_size = 1, ee = 0x3e8cbc), line 216 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[28] ExecuteJava(initial_pc = 0x3e8bba "Õ", ee = 0x3e8cbc), line 1928 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[29] do_execute_java_method_vararg(ee = 0x3e8cbc, obj = 0x2eb818, method_name = 0x7e43c "run", method_signature = 0x7e440 "()V", mb = (nil), isStaticCall = FALSE, args = 0x3e8cac), line 418 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[30] execute_java_dynamic_method(ee = 0x3e8cbc, obj = 0x2eb818, method_name = 0x7e43c "run", signature = 0x7e440 "()V", ...), line 194 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[31] ThreadRT0(p = 0x2eb818), line 52 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/lang/thread.c"
[32] start_func(dummy = 1, arg = 3061784, func = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8), line 131 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/threads_md.c"
(dbx)
The description field as copied from bug report 1192471 follows:
Going to http://prinny.pavilion.co.uk/Gallery/Shot/Stella/
SIGSEGV 11* segmentation violation
si_signo [11]: SIGSEGV 11* segmentation violation
si_errno [0]: Error 0
si_code [1]: SEGV_ACCERR [addr: 0xef7ffff0]
stackbase=EFFFF99C, stackpointer=EFFFECB8
Full thread dump:
"Thread-1015" (0x70ffc0): priority=4
java.lang.Object.wait(Object.java)
awt.DIWUpdaterThread.getRequest(DisplayItemWindow.java:569)
awt.DIWUpdaterThread.run(DisplayItemWindow.java:594)
"Background Image Reader" (0x6cd510): priority=2
java.lang.Object.wait(Object.java)
webrunner.ImageReader.waitForRequest(ImageReader.java:76)
webrunner.ImageReader.run(ImageReader.java:137)
"Thread-2" (0x6c3510): priority=5
webrunner.HistoryWindow.run(webrunner.java:1764)
java.lang.Thread.run(Thread.java)
"Thread-1" (0x6c1850): priority=6
webrunner.StatusWindow.run(webrunner.java:505)
java.lang.Thread.run(Thread.java)
"AWT WServer Thread" (0x6c0688): priority=5
awt.WServer.run(WServer.java:65)
"Async Garbage Collector" (0x6c0460): priority=1
"Finalizer thread" (0x6c0408): priority=1
"Idle thread" (0x6c03f8): priority=0
"clock handler" (0x6c03e8): priority=11
"main" (0x6c03e0): priority=5 *current thread*
webrunner.DocumentManager.fetchDocument(DocumentManager.java:96)
webrunner.DocumentManager.newDocument(DocumentManager.java:82)
webrunner.WRWindow.pushURL(WRWindow.java:296)
webrunner.webrunner.go(webrunner.java:105)
test.Webrunner.go(test.java:57)
test.test.<init>(test.java:91)
test.test.main(test.java:107)
Monitor Cache Dump:
awt.DIWUpdaterThread@70FFC0/5DA898 (key=0x70ffc0): unowned
Waiting to be notified:
"Thread-1015" (0x70ffc0): priority=4
webrunner.FetcherThread@71C460/5FC140 (key=0x71c460): monitor owner: "main" (0x89ecf8)
webrunner.WRWindow@6C1348/5E720 (key=0x6c1348): monitor owner: "main" (0x89ecf8)
unknown key (key=0x987b28): unowned
Waiting to be notified:
"Thread-2" (0x6c3510): priority=5
unknown key (key=0x945550): unowned
Waiting to be notified:
"Thread-1" (0x6c1850): priority=6
webrunner.ImageReader@6CD510/A0BE8 (key=0x6cd510): unowned
Waiting to be notified:
"Background Image Reader" (0x6cd510): priority=2
unknown key (key=0xef3622a0): monitor owner: "AWT WServer Thread" (0x8dd398)
Registered Monitor Dump:
Finalization queue lock: unowned
Waiting to be notified:
"Finalizer thread" (0x6c0408): priority=1
Thread queue lock: unowned
Class lock: unowned
Java stack lock: unowned
Code rewrite lock: unowned
Heap lock: unowned
Monitor registry: monitor owner: "main" (0x89ecf8)
Monitor cache lock: unowned
Event monitor: unowned
I/O monitor: monitor owner: "AWT WServer Thread" (0x8dd398)
Alarm monitor: unowned
Waiting to be notified:
"clock handler" (0x6c03e8): priority=11
Thread Alarm Q:
sys_thread_t 0x945550 [Timeout in 161 ms]
sys_thread_t 0x987b28 [Timeout in 163 ms]
Abort (core dumped)
~/awt> alias ji
(gdb) frame
#0 0xef7156c8 in _heap_lock ()
(gdb) bt
#0 0xef7156c8 in _heap_lock ()
#1 0xef6ec36c in _heap_lock ()
#2 0xef6eae3c in _heap_lock ()
#3 0xef6d56dc in _heap_lock ()
#4 0x392b8 in initContext ()
#5 0x2f51c in sysThreadCreate ()
#6 0x2c394 in threadCreate ()
#7 0x2bf80 in java_lang_Thread_start ()
#8 0x31d8c in java_lang_Thread_start_stub ()
#9 0x22134 in invokeSynchronizedNativeMethod ()
#10 0x20f64 in ExecuteJava ()
#11 0x1d228 in do_execute_java_method_vararg ()
#12 0x1d0c0 in do_execute_java_method ()
#13 0x33d88 in start_java ()
(gdb) quit
~/awt>
package test;
class Lock {
int i;
synchronized void grab() {
wait();
}
synchronized void notify_it() {
notifyAll();
}
}
class Victim extends Thread {
Lock m_l;
int m_count;
Victim(Lock l, int count) {
m_l = l;
m_count = count;
}
public void run() {
while (true) {
//System.out.print(m_count);
m_l.grab();
}
}
}
class Notifier extends Thread {
Lock m_l;
Notifier(Lock l) {
m_l = l;
}
public void run() {
while(true) {
//System.out.print("n");
m_l.notify_it();
yield();
}
}
}
class Murderer extends Thread {
killnotify m_main;
Murderer(killnotify main) {
m_main = main;
}
public void run() {
while (true) {
Thread victim = m_main.getVictim();
if (victim != null) {
try {
victim.stop();
//System.out.println("!");
m_main.setVictim(null);
} catch (IllegalStateException e) {
//System.out.print("-");
yield();
}
} else {
sleep(100);
}
}
}
}
class killnotify extends Thread {
Thread m_victim;
public void run() {
int count = 0;
Lock l = new Lock();
Murderer m = new Murderer(this);
m.start();
Notifier n = new Notifier(l);
n.start();
while (true) {
try {
Thread v = getVictim();
if (v != null) v.stop();
} catch (IllegalStateException e) {
//System.out.println("*");
}
//System.out.print("v");
Victim v = new Victim(l, count++);
v.start();
sleep(50);
setVictim(v);
sleep(100);
}
}
public Thread getVictim() {
return m_victim;
}
public void setVictim(Thread victim) {
m_victim = victim;
}
public static void main(String args[]) {
killnotify self = new killnotify();
self.start();
}
}
The description field as copied from bug report 1191598 follows:
I was running server interpreters and was slowly running out of swap space
when I saw this core dump:
(dbx) where
[1] kill(0x0, 0x6, 0x1, 0xef73dcb0, 0xef740778, 0x3e8), at 0xef721830
[2] abort(0x27, 0x27, 0x3e8fe8, 0x3e7d08, 0x3e6e2c, 0xfcaf2800), at 0xef6ed7ec
=>[3] signalHandlerPanic(sig = 11, info = 0x3e70c8, uc = 0x3e6f08), line 403 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/interrupt_md.c"
---- called from signal handler with signal 11 (SIGSEGV) ------
[4] makecontext(), at 0xef6d660c
[5] initContext(tid = 0x4a7ec8, pc = 282312, death_func = &start_func(int dummy, int arg, void (*func)()) at 0x4af58, arg = 3086904), line 168 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/context.c"
[6] sysThreadCreate(stack_size = 65536, flags = 1, start = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8, ptid = 0x3e72c4, cookie = 0x2f1a38), line 154 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/threads_md.c"
[7] threadCreate(tid = 0x2f1a38, flags = 1, stack_size = 65536, func = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8), line 98 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/threads.c"
[8] java_lang_Thread_start(p = 0x2f1a38), line 75 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/lang/thread.c"
[9] java_lang_Thread_start_stub(_P_ = 0x3e9148, _EE_ = 0x3e8cbc), line 799 in "/net/acorn/work/java/build/solaris/java/JAVA/classstubs.c"
[10] invokeSynchronizedNativeMethod(o = 0x2f1a38, mb = 0x3a0890, args_size = 1, ee = 0x3e8cbc), line 201 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[11] ExecuteJava(initial_pc = 0x3e7bb2 "Õ", ee = 0x3e8cbc), line 1928 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[12] do_execute_java_method_vararg(ee = 0x3e8cbc, obj = 0x2ec5f0, method_name = 0xef5c3604 "selected", method_signature = 0xef5c3610 "()V", mb = (nil), isStaticCall = FALSE, args = 0x3e7ca4), line 418 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[13] execute_java_dynamic_method(ee = 0x3e8cbc, obj = 0x2ec5f0, method_name = 0xef5c3604 "selected", signature = 0xef5c3610 "()V", ...), line 194 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[14] TextField_changed(w = 0x432de8, client_data = 0x2ec5f0 "", s = 0x3e7d14), line 25 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_TextField.c"
[15] Activate(0x432de8, 0x3e80b0, 0x0, 0xef38f40c, 0xef38f41c, 0xef483d38), at 0xef483d68
[16] HandleActions(0x432de8, 0x3e80b0, 0x428f08, 0x0, 0x4978dc, 0xef38f404), at 0xef372000
[17] HandleSimpleState(0x1, 0x0, 0x1, 0x0, 0x0, 0x4978dc), at 0xef3725e4
[18] _XtTranslateEvent(0x432de8, 0x3e80b0, 0x0, 0x3e7f27, 0x0, 0x432e18), at 0xef372ba0
[19] DispatchEvent(0x3e80b0, 0x432de8, 0x1, 0x4, 0x0, 0x0), at 0xef355bdc
[20] DecideToDispatch(0x3e80b0, 0x3f22e4, 0x1, 0x432de8, 0x432de8, 0x0), at 0xef3562f0
[21] XtDispatchEvent(0x3e80b0, 0x0, 0x1, 0x0, 0x1, 0x3d3ac0), at 0xef3563d0
[22] XtAppProcessEvent(0x3d3ac0, 0x0, 0x3d3c8c, 0x3d3acc, 0x3d3c88, 0x1), at 0xef35ecfc
[23] awt_WServer_loop(wsdata = 0x3d4e00, poll = 0x3e82d4, isModal = 0), line 159 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_WServer.c"
[24] awt_WServer_eventLoop(this = 0x2eb818), line 185 in "/net/acorn/work/java/build/solaris/awt/../../../src/solaris/awt/awt_WServer.c"
[25] awt_WServer_eventLoop_stub(_P_ = 0x3e9058, _EE_ = 0x3e8cbc), line 151 in "/net/acorn/work/java/build/solaris/awt/libstubs.c"
[26] invokeNativeMethod(o = 0x2eb818, mb = 0x3d69a8, args_size = 1, ee = 0x3e8cbc), line 180 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[27] invokeLazyNativeMethod(o = 0x2eb818, mb = 0x3d69a8, args_size = 1, ee = 0x3e8cbc), line 216 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/classruntime.c"
[28] ExecuteJava(initial_pc = 0x3e8bba "Õ", ee = 0x3e8cbc), line 1928 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[29] do_execute_java_method_vararg(ee = 0x3e8cbc, obj = 0x2eb818, method_name = 0x7e43c "run", method_signature = 0x7e440 "()V", mb = (nil), isStaticCall = FALSE, args = 0x3e8cac), line 418 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[30] execute_java_dynamic_method(ee = 0x3e8cbc, obj = 0x2eb818, method_name = 0x7e43c "run", signature = 0x7e440 "()V", ...), line 194 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/runtime/interpreter.c"
[31] ThreadRT0(p = 0x2eb818), line 52 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/share/java/lang/thread.c"
[32] start_func(dummy = 1, arg = 3061784, func = &`thread.c`ThreadRT0(register Hjava_lang_Thread *p) at 0x44ec8), line 131 in "/net/acorn/work/java/build/solaris/java/JAVA/../../../../src/solaris/java/runtime/threads_md.c"
(dbx)
The description field as copied from bug report 1192471 follows:
Going to http://prinny.pavilion.co.uk/Gallery/Shot/Stella/
SIGSEGV 11* segmentation violation
si_signo [11]: SIGSEGV 11* segmentation violation
si_errno [0]: Error 0
si_code [1]: SEGV_ACCERR [addr: 0xef7ffff0]
stackbase=EFFFF99C, stackpointer=EFFFECB8
Full thread dump:
"Thread-1015" (0x70ffc0): priority=4
java.lang.Object.wait(Object.java)
awt.DIWUpdaterThread.getRequest(DisplayItemWindow.java:569)
awt.DIWUpdaterThread.run(DisplayItemWindow.java:594)
"Background Image Reader" (0x6cd510): priority=2
java.lang.Object.wait(Object.java)
webrunner.ImageReader.waitForRequest(ImageReader.java:76)
webrunner.ImageReader.run(ImageReader.java:137)
"Thread-2" (0x6c3510): priority=5
webrunner.HistoryWindow.run(webrunner.java:1764)
java.lang.Thread.run(Thread.java)
"Thread-1" (0x6c1850): priority=6
webrunner.StatusWindow.run(webrunner.java:505)
java.lang.Thread.run(Thread.java)
"AWT WServer Thread" (0x6c0688): priority=5
awt.WServer.run(WServer.java:65)
"Async Garbage Collector" (0x6c0460): priority=1
"Finalizer thread" (0x6c0408): priority=1
"Idle thread" (0x6c03f8): priority=0
"clock handler" (0x6c03e8): priority=11
"main" (0x6c03e0): priority=5 *current thread*
webrunner.DocumentManager.fetchDocument(DocumentManager.java:96)
webrunner.DocumentManager.newDocument(DocumentManager.java:82)
webrunner.WRWindow.pushURL(WRWindow.java:296)
webrunner.webrunner.go(webrunner.java:105)
test.Webrunner.go(test.java:57)
test.test.<init>(test.java:91)
test.test.main(test.java:107)
Monitor Cache Dump:
awt.DIWUpdaterThread@70FFC0/5DA898 (key=0x70ffc0): unowned
Waiting to be notified:
"Thread-1015" (0x70ffc0): priority=4
webrunner.FetcherThread@71C460/5FC140 (key=0x71c460): monitor owner: "main" (0x89ecf8)
webrunner.WRWindow@6C1348/5E720 (key=0x6c1348): monitor owner: "main" (0x89ecf8)
unknown key (key=0x987b28): unowned
Waiting to be notified:
"Thread-2" (0x6c3510): priority=5
unknown key (key=0x945550): unowned
Waiting to be notified:
"Thread-1" (0x6c1850): priority=6
webrunner.ImageReader@6CD510/A0BE8 (key=0x6cd510): unowned
Waiting to be notified:
"Background Image Reader" (0x6cd510): priority=2
unknown key (key=0xef3622a0): monitor owner: "AWT WServer Thread" (0x8dd398)
Registered Monitor Dump:
Finalization queue lock: unowned
Waiting to be notified:
"Finalizer thread" (0x6c0408): priority=1
Thread queue lock: unowned
Class lock: unowned
Java stack lock: unowned
Code rewrite lock: unowned
Heap lock: unowned
Monitor registry: monitor owner: "main" (0x89ecf8)
Monitor cache lock: unowned
Event monitor: unowned
I/O monitor: monitor owner: "AWT WServer Thread" (0x8dd398)
Alarm monitor: unowned
Waiting to be notified:
"clock handler" (0x6c03e8): priority=11
Thread Alarm Q:
sys_thread_t 0x945550 [Timeout in 161 ms]
sys_thread_t 0x987b28 [Timeout in 163 ms]
Abort (core dumped)
~/awt> alias ji
(gdb) frame
#0 0xef7156c8 in _heap_lock ()
(gdb) bt
#0 0xef7156c8 in _heap_lock ()
#1 0xef6ec36c in _heap_lock ()
#2 0xef6eae3c in _heap_lock ()
#3 0xef6d56dc in _heap_lock ()
#4 0x392b8 in initContext ()
#5 0x2f51c in sysThreadCreate ()
#6 0x2c394 in threadCreate ()
#7 0x2bf80 in java_lang_Thread_start ()
#8 0x31d8c in java_lang_Thread_start_stub ()
#9 0x22134 in invokeSynchronizedNativeMethod ()
#10 0x20f64 in ExecuteJava ()
#11 0x1d228 in do_execute_java_method_vararg ()
#12 0x1d0c0 in do_execute_java_method ()
#13 0x33d88 in start_java ()
(gdb) quit
~/awt>