RFR (S) 8001538: hs_err file does not list anymore compiled methods in compilation events

[Vladimir Ivanov]

Vladimir K., Chris, thank you for the review.

Yes, it restores original compilation events format [1]

I verified that it's safe to use objects from resource area for logging: 
event logger copies message content into internal buffer.

Updated webrev:
http://cr.openjdk.java.net/~vlivanov/8001538/webrev.01/

Best regards,
Vladimir Ivanov

[1] 
http://cr.openjdk.java.net/~vlivanov/8001538/webrev.01/hs_err_pid87677.log

On 11/13/12 7:41 PM, Vladimir Kozlov wrote:
> Very nice fix, Vladimir I., thank you
>
> To confirm, the size fix restored methods names in compilation events. Right?
>
> You moved deoptimization event logging under resourceMark, make sure the logging code does not use resource area or copied from it to safe place.
>
> Thanks,
> Vladimir
>
> On Nov 13, 2012, at 7:53 AM, Vladimir Ivanov wrote:
>
>> http://cr.openjdk.java.net/~vlivanov/8001538/webrev.00/
>>
>> Due to incorrect message buffer size calculation, a message may be truncated to 4/8 characters.
>>
>> Also, changed how deoptimization events are logged:
>>   - moved [1] from "Deoptimization events" to "Events" section.
>>   - added [2] to "Deoptimization events" section
>>
>> Sample output from a hs_err file:
>> Deoptimization events (2 events):
>> Event: 3.438 Thread 0x0000000103804800 Uncommon trap: Test::f @ 23, reason: unloaded, action: reinterpret
>> Event: 3.482 Thread 0x0000000103804800 Uncommon trap: Test::main @ 38, reason: unloaded, action: reinterpret
>>
>> Internal exceptions (10 events):
>> ...
>>
>> Events (10 events):
>> Event: 3.441 Thread 0x0000000103804800 DEOPT UNPACKING pc=0x00000001046cf214 sp=0x0000000100700548 mode 2
>> Event: 3.482 Thread 0x0000000103804800 Uncommon trap 3 fr.pc 0x00000001046ffe1c
>> ...
>>
>> Testing: JPRT, simple test w/ deopt events in the log.
>>
>> Best regards,
>> Vladimir Ivanov
>>
>> [1] Uncommon trap 3 fr.pc 0x00000001046ffe1c
>> [2] Uncommon trap: Test::f @ 23, reason=unloaded action=reinterpret
>