stacktrace_with_context.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019 
1// Copyright (c) 2009, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14//     * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30// ---
31// Author: Paul Pluzhnikov
32//
33// This code logically belongs in stacktrace.cc, but
34// it is moved into (this) separate file in order to
35// prevent inlining of routines defined here.
36//
37// Inlining causes skip_count to be incorrect, and there
38// is no portable way to prevent it.
39//
40// Eventually LTO (link-time optimization) and/or LLVM
41// may inline this code anyway. Let's hope they respect
42// ATTRIBUTE_NOINLINE.
43
44#include <config.h>
45#include <gperftools/stacktrace.h>
46#include "stacktrace_config.h"
47#include "base/basictypes.h"
48
49#if !defined(STACKTRACE_SKIP_CONTEXT_ROUTINES)
50ATTRIBUTE_NOINLINE PERFTOOLS_DLL_DECL
51int GetStackFramesWithContext(void** pcs, int* sizes, int max_depth,
52                              int skip_count, const void * /* uc */) {
53  return GetStackFrames(pcs, sizes, max_depth, skip_count + 1);
54}
55
56ATTRIBUTE_NOINLINE PERFTOOLS_DLL_DECL
57int GetStackTraceWithContext(void** result, int max_depth,
58                             int skip_count, const void * /* uc */) {
59  return GetStackTrace(result, max_depth, skip_count + 1);
60}
61#endif
62