[GitHub] cjolivier01 commented on a change in pull request #8851: Use backtrace from dmlc-core (dmlc::stack_trace())

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cjolivier01 commented on a change in pull request #8851: Use backtrace from dmlc-core (dmlc::stack_trace())
URL: https://github.com/apache/incubator-mxnet/pull/8851#discussion_r155975049
 
 

 ##########
 File path: src/initialize.cc
 ##########
 @@ -25,37 +25,23 @@
 #include <signal.h>
 #include <dmlc/logging.h>
 #include <mxnet/engine.h>
-
 #include "engine/profiler.h"
 
 namespace mxnet {
-
-void segfault_logger(int sig) {
-  const int MAX_STACK_SIZE = 10;
-  void *stack[MAX_STACK_SIZE];
-
+#if MXNET_USE_SIGNAL_HANDLER && DMLC_LOG_STACK_TRACE
+static void SegfaultLogger(int sig) {
   fprintf(stderr, "\nSegmentation fault: %d\n\n", sig);
-
-#if DMLC_LOG_STACK_TRACE
-  int nframes = backtrace(stack, MAX_STACK_SIZE);
-  fprintf(stderr, "Stack trace returned %d entries:\n", nframes);
-  char **msgs = backtrace_symbols(stack, nframes);
-  if (msgs != nullptr) {
-    for (int i = 0; i < nframes; ++i) {
-      fprintf(stderr, "[bt] (%d) %s\n", i, msgs[i]);
-    }
-  }
-#endif  // DMLC_LOG_STACK_TRACE
-
+  fprintf(stderr, "%s", dmlc::StackTrace().c_str());
 
 Review comment:
   Will fprintf() do a flush on \n or should fflush() be called here?
   

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