stacktrace_generic-inl.h

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// Copyright (c) 2000 - 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
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// this software without specific prior written permission.
//
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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//
// Portable implementation - just use glibc
//
// Note:  The glibc implementation may cause a call to malloc.
// This can cause a deadlock in HeapProfiler.
#include <execinfo.h>
#include <string.h>
#include "stacktrace.h"
 
_START_GOOGLE_NAMESPACE_
 
// If you change this function, also change GetStackFrames below.
int GetStackTrace(void** result, int max_depth, int skip_count) {
  static const int kStackLength = 64;
  void * stack[kStackLength];
  int size;
 
  size = backtrace(stack, kStackLength);
  skip_count++;  // we want to skip the current frame as well
  int result_count = size - skip_count;
  if (result_count < 0) {
    result_count = 0;
  }
  if (result_count > max_depth) {
    result_count = max_depth;
  }
  for (int i = 0; i < result_count; i++) {
    result[i] = stack[i + skip_count];
  }
 
  return result_count;
}
 
_END_GOOGLE_NAMESPACE_