From: mil...@asfs2.hitachi.co.jp [mailto:mil...@asfs2.hitachi.co.jp] On Behalf
Of Milian Wolff
>
>On Tuesday, November 3, 2015 3:20:42 AM CET 平松雅巳 / HIRAMATU，MASAMI wrote:
>> From: Arnaldo Carvalho de Melo [mailto:a...@kernel.org]
>>
>> >Em Tue, Nov 03, 2015 at 12:50:46AM +0000, Alex Bagehot escreveu:
>> >> Hello,
>> >>
>> >> I get this error with perf probe, :
>> >>
>> >> perf probe -vvv -x /opt/jdk1.8.0_60/jre/lib/amd64/server/libjvm.so
>> >> '_ZN13CollectedHeap24common_mem_allocate_initE11KlassHandlemP6Thread'
>>
>> Ah, I've never thought that the symbol name gets so long :(
>> BTW, is that oracle's jdk package? I'd like to reproduce the bug.
>
>Just want to chime in: Don't assume _anything_ about symbol names - they are
>extremely complicated and with C++ templates can be extremely long:
>
>nm -a libQt5WebKit.so.5.6.0 | cut -d' ' -f 3 | awk '{ if (length($0) > max)
>{max = length($0); maxline = $0} } END { print maxline; print length(maxline)
>}'
>_ZZN3WTF9HashTableINS_12AtomicStringENS_12KeyValuePairIS1_PFvPN7WebCore17NetworkingContextERKNS3_15ResourceRequestEN
>S3_17StoredCredentialsERNS3_13ResourceErrorERNS3_16ResourceResponseERNS_6VectorIcLm0ENS_15CrashOnOverflowEEEEEENS_24Ke
>yValuePairKeyExtractorISK_EENS_16AtomicStringHashENS_18HashMapValueTraitsINS_10HashTraitsIS1_EENSP_ISJ_EEEESQ_E3addINS_1
>7HashMapTranslatorISS_SN_EES1_SJ_EENS_18HashTableAddResultINS_17HashTableIteratorIS1_SK_SM_SN_SS_SQ_EEEERKT0_RKT1_E1
>9__PRETTY_FUNCTION__
>490
>
Oops ... OK, so perf-probe should warn user to give a new event name for the
probes on such long-name function.
Thanks!
>Cheers
>--
>Milian Wolff | milian.wo...@kdab.com | Software Engineer
>KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
>Tel: +49-30-521325470
>KDAB - The Qt Experts
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