Bug ID: JDK-4496749 C2: missing METHOD

Type: Bug
Component: vm-legacy
Sub-Component: jvmpi
Affected Version: 1.4.0

Priority: P4
Status: Closed
Resolution: Cannot Reproduce
OS: solaris_8
CPU: sparc

Submitted: 2001-08-27
Updated: 2001-11-06
Resolved: 2001-11-06

There are some methods missing METHOD_EXIT events when running 
java -server -Xrunhprof:cpu=times on applications.

So hprof outputs a lot of:
HPROF ERROR: method on stack top != method exiting..

method_entry and method_exit are not paired up.
hprof received method_entry for one method but didn't receive
method_exit for it; instead it receives a method_exit event
for its caller. 

See 4489387 and 4491764 to reproduce the problem.

EVALUATION ###@###.### 2001-10-25 I am not able to reproduce the failure using JDK 1.4 build 84. I tested the following test cases on Solsparc and Win32: java -server -Xrunhprof:cpu=times -jar SwingSet2.jar java -server -Xrunhprof:cpu=times -cp jmol-0.2/jars/jmol.jar -Djmol.home=jmol-0.2 jmol.Jmol java -Xrunhprof:cpu=times -cp TeaTimeJ/teatime.jar mm.project.teatime java -server -Xrunhprof:cpu=times -cp mailpuccino.jar Mailpuccino The last three test cases are gotten from Tong Zhang. ###@###.### 2001-11-06 There were a few C2 fixes putback in build 83: 4503832 1/1 atg server failed with Merlin b79 on x86 in C2 mixed mode 4506997 atg hang in C2 mode on jtgbp62c with Merlin b80 4504804 Performance degradation on scimark 2.0 We're not sure which bug fix fixed the missing method_exit event problem. Since the failure is not reproducible, I'll close this bug.

11-06-2004

Relates :	JDK-4491764 - JVMPI method entry, exit events cause client VM to crash with Unexpected Signal.
Relates :	JDK-4489387 - -Xrunhprof crashed jvm or got program run to hang