| Austin Schuh | 906616c | 2019-01-21 20:25:11 -0800 | [diff] [blame^] | 1 | // Copyright (c) 2000 - 2007, 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 | // Portable implementation - just use glibc |
| 31 | // |
| 32 | // Note: The glibc implementation may cause a call to malloc. |
| 33 | // This can cause a deadlock in HeapProfiler. |
| 34 | #include <execinfo.h> |
| 35 | #include <string.h> |
| 36 | #include "stacktrace.h" |
| 37 | |
| 38 | _START_GOOGLE_NAMESPACE_ |
| 39 | |
| 40 | // If you change this function, also change GetStackFrames below. |
| 41 | int GetStackTrace(void** result, int max_depth, int skip_count) { |
| 42 | static const int kStackLength = 64; |
| 43 | void * stack[kStackLength]; |
| 44 | int size; |
| 45 | |
| 46 | size = backtrace(stack, kStackLength); |
| 47 | skip_count++; // we want to skip the current frame as well |
| 48 | int result_count = size - skip_count; |
| 49 | if (result_count < 0) |
| 50 | result_count = 0; |
| 51 | if (result_count > max_depth) |
| 52 | result_count = max_depth; |
| 53 | for (int i = 0; i < result_count; i++) |
| 54 | result[i] = stack[i + skip_count]; |
| 55 | |
| 56 | return result_count; |
| 57 | } |
| 58 | |
| 59 | _END_GOOGLE_NAMESPACE_ |