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As per comments in http://reviews.llvm.org/D8032
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@231457 91177308-0d34-0410-b5e6-96231b3b80d8
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Long story short: stop-the-world briefly resets SIGSEGV handler to SIG_DFL.
This breaks programs that handle and continue after SIGSEGV (namely JVM).
See the test and comments for details.
This is reincarnation of reverted r229678 (http://reviews.llvm.org/D7722).
Changed:
- execute TracerThreadDieCallback only on tracer thread
- reset global data in TracerThreadSignalHandler/TracerThreadDieCallback
- handle EINTR from waitpid
Add 3 new test:
- SIGSEGV during leak checking
- StopTheWorld operation during signal storm from an external process
- StopTheWorld operation when the program generates and handles SIGSEGVs
http://reviews.llvm.org/D8032
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@231367 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183972 91177308-0d34-0410-b5e6-96231b3b80d8
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An interface for obtaining register contexts from suspended threads. Tailored
for LSan use.
Patch by Sergey Matveev (earthdok@google.com)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@178461 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177246 91177308-0d34-0410-b5e6-96231b3b80d8
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StopTheWorld puts the process in a suspended state before running the
user-supplied callback. To be used in TSan and in leak checking code.
Linux implementation provided.
Patch by Sergey Matveev (earthdok@google.com)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177156 91177308-0d34-0410-b5e6-96231b3b80d8
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