RFR: 8143157: Convert TraceVMOperation to Unified Logging (original) (raw)
Rachel Protacio rachel.protacio at oracle.com
Fri Nov 20 19:27:43 UTC 2015
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Thank you, David, Kirk, Marcus, Max, and Coleen, for all your comments.
Updated webrev: http://cr.openjdk.java.net/~rprotacio/8143157.01/ Changes:
- moved initialization of "outputStream* debugstream" to inside vmoperation conditional
- added boolean for log_is_enabled conditional to save duplicate operation and avoid possibility that flag has been enabled/disabled between calls
- removed "[" and "]" from the beginning and end delimiters of the logging output. Added "begin" and "end" as lead-in to log VMOperation thread info statements instead (could not insert in middle of string because print_on_error is used in other places).*
- added memory heap limit to test (ProcessBuilder call in VMOperationTest) and added comment to VMOperationTestMain
Thank you, Rachel
*Sample output:
$ java -Xlog:vmoperation=debug VMOperationTestMain
[0.262s][debug ][vmoperation] begin VM_Operation
(0x00007f01a029a700): G1CollectFull, mode: safepoint, requested by
thread 0x00007f0198018000
[0.278s][debug ][vmoperation] end VM_Operation
(0x00007f01a029a700): G1CollectFull, mode: safepoint, requested by
thread 0x00007f0198018000On 11/17/2015 2:50 PM, Rachel Protacio wrote:
Hi,
Please review the following small logging enhancement. Summary: The former -XX:+TraceVMOperation flag is updated to the unified logging framework and is now replaced with -Xlog:vmoperation in product mode. Open webrev: http://cr.openjdk.java.net/~rprotacio/8143157/ Bug: https://bugs.openjdk.java.net/browse/JDK-8143157 Testing: Passes jtreg, JPRT, RBT quick tests, and refworkload performance tests. A compatability request has been accepted with regard to this change. Thank you very much, Rachel
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