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Bug 809317 - Add stackwalking to SAMPLER_PRINT_LOCATION on mac. r=ehsan

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--HG--
extra : rebase_source : c2cb7d1b61d18054105115034585a251bce6a58b
This commit is contained in:
Benoit Girard 2012-11-19 18:31:47 -05:00
parent c3f0542212
commit 09bc4ee28d
1 changed files with 32 additions and 1 deletions
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33
tools/profiler/TableTicker.cpp
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@ -1204,6 +1204,17 @@ void print_callback(const ProfileEntry& entry, const char* tagStringData) {
case 's':
case 'c':
printf_stderr(" %s\n", tagStringData);
break;
case 'l':
unsigned long long pc = (unsigned long long)(uintptr_t)entry.mTagPtr;
nsCodeAddressDetails details;
NS_DescribeCodeAddress((void*)pc, &details);
if (details.function) {
printf_stderr(" %s\n", details.function);
} else {
printf_stderr(" %#llx\n", pc);
}
break;
}
}
@ -1218,8 +1229,28 @@ void mozilla_sampler_print_location()
return;
}
ThreadProfile threadProfile(1000, stack);
ThreadProfile threadProfile(2000, stack);
#if defined(XP_MACOSX) && defined(USE_NS_STACKWALK)
// Get the frame pointer
void **bp;
#if defined(__i386)
__asm__( "movl %%ebp, %0" : "=g"(bp));
#else
// It would be nice if this worked uniformly, but at least on i386 and
// x86_64, it stopped working with gcc 4.1, because it points to the
// end of the saved registers instead of the start.
bp = (void**) __builtin_frame_address(0);
#endif
TickSample sample;
sample.fp = (unsigned char*)bp;
sample.pc = nullptr;
sample.sp = (unsigned char*)&stack;
doMergeBacktrace(threadProfile, &sample, 0);
#else
doSampleStackTrace(stack, threadProfile, NULL);
#endif
threadProfile.flush();