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Avoid adding SegfaultLogger if process already has sig handler. #13842

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Jan 15, 2019
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Avoid adding SegfaultLogger if process already has sig handler. #13842

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6 changes: 5 additions & 1 deletion src/initialize.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,11 @@ class LibraryInitializer {
LibraryInitializer() {
dmlc::InitLogging("mxnet");
#if MXNET_USE_SIGNAL_HANDLER && DMLC_LOG_STACK_TRACE
signal(SIGSEGV, SegfaultLogger);
struct sigaction sa;
sigaction(SIGSEGV, NULL, &sa);
if (sa.sa_handler == NULL) {
signal(SIGSEGV, SegfaultLogger);
}
#endif

// disable openmp for multithreaded workers
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