[#DTRC-580] Causes profilee to freeze

dotTrace

Causes profilee to freeze

Created: 13 May 07 19:11 Updated: 16 May 07 18:49

Component/s:

Core

Affects Version/s:

3.0

Fix Version/s:

3.0 Minor

Original Estimate:	Unknown	Remaining Estimate:	Unknown	Time Spent:	Unknown
Environment:	Build: 305.39

Description

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Here is callstack, it never returns to JIT...

kernel32.dll!_InterlockedExchange@8() + 0xe bytes
JetBrains.dotTrace.Core.ia32.dll!10009ead()
[Frames below may be incorrect and/or missing, no symbols loaded for JetBrains.dotTrace.Core.ia32.dll]
JetBrains.dotTrace.Core.ia32.dll!1000e55b()
mscordbc.dll!EEToProfInterfaceImpl::JITInlining() + 0x77 bytes
mscorjit.dll!Compiler::impExpandInline() + 0x1a4 bytes
mscorjit.dll!Compiler::fgMorphCallInline() + 0x105 bytes
mscorjit.dll!Compiler::fgMorphCall() + 0x4a bytes
mscorjit.dll!Compiler::fgMorphTree() + 0x1628 bytes
mscorjit.dll!Compiler::fgMorphStmts() + 0x5c bytes
mscorjit.dll!Compiler::fgMorphBlocks() + 0x7d bytes
mscorjit.dll!Compiler::fgMorph() + 0x4a bytes
mscorjit.dll!Compiler::compCompile() + 0x52 bytes
mscorjit.dll!Compiler::compCompile() + 0x257 bytes
mscorjit.dll!jitNativeCode() + 0x9a bytes
mscorjit.dll!CILJit::compileMethod() + 0x3d bytes
mscorlib.dll!System.Threading.Thread.Name.set(string value) + 0x4f bytes

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Ilya Ryzhenkov - 13 May 07 19:11

"Allow inlining" is set to true.

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George Udov - 16 May 07 18:49

Results of research of this issue:

1) We can get std::bad_alloc (out of memory) exception on attempt to allocate profiler data for newly created thread.
2) When we get this exception, we don't release one mutex. It causes deadlock.

I applied some optimization to allocating memory in CoreDll, that must reduce the probability of appearing this again.
If this reproduces again, please look at VM size of profilee process in task manager. If it is ~2Gb, then C'est la vie...