RESOLVED INVALID 219589
failed to use os_signpost with Instruments to collect some trace in webkit 
https://bugs.webkit.org/show_bug.cgi?id=219589
Summary failed to use os_signpost with Instruments to collect some trace in webkit
shuangshuang
Reported 2020-12-07 00:26:17 PST
Hi, I try to collect some trace to understand some behaviors in webkit. I see that Xcode provides some os logging methods, and one is call "os_signpost". So I insert those trace functions in source codes and try to use Instruments to collect some trace. No error goes out but I cannot capture any reserved critical events displayed in Instruments. Is os_signpost supported in webkit? If not, what other tools could we use to capture some start and end times of interested events? Thanks
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Radar WebKit Bug Importer
Comment 1 2020-12-07 13:57:01 PST
<rdar://problem/72062789>
shuangshuang
Comment 2 2020-12-09 00:11:56 PST
Hi, does anyone has some ideas on this?
Alexey Proskuryakov
Comment 3 2020-12-09 14:52:01 PST
Could you please reach out via one of the help channels listed at <https://webkit.org/getting-started/#staying-in-touch>? Since this is a question and there is no indication of a WebKit bug, resolving this bug report as invalid.
shuangshuang
Comment 4 2020-12-09 17:14:12 PST
Thanks AP! Sure, I've already done that and waiting for some reply.
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