RFR: 8308151: [JVMCI] capture JVMCI exceptions in hs-err [v2]
Doug Simon
dnsimon at openjdk.org
Tue May 16 21:33:50 UTC 2023
> When there is a pending exception after a JVMCI upcall into libjvmci, the VM calls the ExceptionDescribe JNI function to print the exception. Unfortunately, this output goes to "a system error-reporting channel" [1] which may not be tty. It also means the output is not in a hs-err log should the VM then exit with a fatal error. This has historically made it harder to triage libgraal bugs (i.e. the console output is usually required in addition to the hs-err crash log).
>
> This PR addresses these shortcomings by printing the exception info to a string which is added to the JVMCI event log (for hs-err):
>
> JVMCI Events (11 events):
> ...
> Event: 0.274 Thread 0x0000000146819210 compiler.jvmci.TestUncaughtErrorInCompileMethod$CompilerCreationError
> Event: 0.274 Thread 0x0000000146819210 at compiler.jvmci.TestUncaughtErrorInCompileMethod$1.createCompiler(TestUncaughtErrorInCompileMethod.java:147)
> Event: 0.274 Thread 0x0000000146819210 at jdk.internal.vm.ci/jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.getCompiler(HotSpotJVMCIRuntime.java:829)
> Event: 0.274 Thread 0x0000000146819210 at jdk.internal.vm.ci/jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.compileMethod(HotSpotJVMCIRuntime.java:943)
>
>
> It is also be used to enhance the `-XX:+PrintCompilation` message issued for a failed compilation:
>
> COMPILE SKIPPED: uncaught exception in call_HotSpotJVMCIRuntime_compileMethod [compiler.jvmci.TestUncaughtErrorInCompileMethod$CompilerCreationError]
>
>
> [1] https://docs.oracle.com/en/java/javase/17/docs/specs/jni/functions.html#exceptiondescribe
Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
append elision comment to end of last stack trace line
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/14000/files
- new: https://git.openjdk.org/jdk/pull/14000/files/b1854a6a..9efd3ea6
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=14000&range=01
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=14000&range=00-01
Stats: 13 lines in 1 file changed: 9 ins; 0 del; 4 mod
Patch: https://git.openjdk.org/jdk/pull/14000.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/14000/head:pull/14000
PR: https://git.openjdk.org/jdk/pull/14000
More information about the hotspot-compiler-dev
mailing list