Status: Assigned
Owner: a...@chromium.org
CC: yang...@chromium.org
Labels: Type-Bug Priority-Medium
New issue 3421 by mvstan...@chromium.org: Profiler issues on mac
http://code.google.com/p/v8/issues/detail?id=3421
A host of tests are failing on mac buildbots:
cctest/test-api/InterceptorCallICFastApi_SimpleSignature_Miss1WithProfiler,
actually the whole test-api/*WithProfiler suite will fail at different
times.
Here is one such failure:
Test: cctest/test-api/FastReturnValuesWithProfiler
Command: xcodebuild/Debug/cctest --random-seed=1166226139 --nocrankshaft
test-api/FastReturnValuesWithProfiler --nohard-abort
--nodead-code-elimination --nofold-constants --enable-slow-asserts
--debug-code --verify-heap
--testing_serialization_file=out/.serdes/serdes_FastReturnValuesWithProfiler__nocrankshaft
Run #1
Exit code: -15
Result: FAIL
The closest I got to reproducing is running in a loop, doing that
eventually will hang. In the debugger I see:
^C (when I get tired of waiting)
Program received signal SIGINT, Interrupt.
0xffff028f in __spin_lock ()
(gdb) bt
#0 0xffff028f in __spin_lock ()
#1 0x00000000 in ?? ()
(gdb) info threads
6 "v8:ProfEvntProc" 0x909032bb in __udivdi3 ()
5 "v8:SweeperThrea" 0x908ecb36 in semaphore_wait_trap ()
4 "v8:SweeperThrea" 0x908ecb36 in semaphore_wait_trap ()
3 "v8:SweeperThrea" 0x908ecb36 in semaphore_wait_trap ()
2 "OptimizingCompi" 0x908ecb36 in semaphore_wait_trap ()
* 1 "com.apple.main-thread" 0xffff028f in __spin_lock ()
We are stuck forever in the spin lock.
Alexi, Yang said that you might have an idea, perhaps there are recent
profiler changes? The issue only happens on mac debug and release builds.
Thx for the look.
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