| James Robinson | 646469d | 2014-10-03 15:33:28 -0700 | [diff] [blame] | 1 | // Copyright (c) 2005, 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: Sanjay Ghemawat |
| 32 | // |
| 33 | // Produce stack trace. |
| 34 | // |
| 35 | // There are three different ways we can try to get the stack trace: |
| 36 | // |
| 37 | // 1) Our hand-coded stack-unwinder. This depends on a certain stack |
| 38 | // layout, which is used by gcc (and those systems using a |
| 39 | // gcc-compatible ABI) on x86 systems, at least since gcc 2.95. |
| 40 | // It uses the frame pointer to do its work. |
| 41 | // |
| 42 | // 2) The libunwind library. This is still in development, and as a |
| 43 | // separate library adds a new dependency, abut doesn't need a frame |
| 44 | // pointer. It also doesn't call malloc. |
| 45 | // |
| 46 | // 3) The gdb unwinder -- also the one used by the c++ exception code. |
| 47 | // It's obviously well-tested, but has a fatal flaw: it can call |
| 48 | // malloc() from the unwinder. This is a problem because we're |
| 49 | // trying to use the unwinder to instrument malloc(). |
| 50 | // |
| 51 | // Note: if you add a new implementation here, make sure it works |
| 52 | // correctly when GetStackTrace() is called with max_depth == 0. |
| 53 | // Some code may do that. |
| 54 | |
| 55 | #include <config.h> |
| 56 | #include <gperftools/stacktrace.h> |
| 57 | #include "stacktrace_config.h" |
| 58 | |
| 59 | #if defined(STACKTRACE_INL_HEADER) |
| 60 | |
| 61 | #define IS_STACK_FRAMES 0 |
| 62 | #define IS_WITH_CONTEXT 0 |
| 63 | #define GET_STACK_TRACE_OR_FRAMES \ |
| 64 | GetStackTrace(void **result, int max_depth, int skip_count) |
| 65 | #include STACKTRACE_INL_HEADER |
| 66 | #undef IS_STACK_FRAMES |
| 67 | #undef IS_WITH_CONTEXT |
| 68 | #undef GET_STACK_TRACE_OR_FRAMES |
| 69 | |
| 70 | #define IS_STACK_FRAMES 1 |
| 71 | #define IS_WITH_CONTEXT 0 |
| 72 | #define GET_STACK_TRACE_OR_FRAMES \ |
| 73 | GetStackFrames(void **result, int *sizes, int max_depth, int skip_count) |
| 74 | #include STACKTRACE_INL_HEADER |
| 75 | #undef IS_STACK_FRAMES |
| 76 | #undef IS_WITH_CONTEXT |
| 77 | #undef GET_STACK_TRACE_OR_FRAMES |
| 78 | |
| 79 | #define IS_STACK_FRAMES 0 |
| 80 | #define IS_WITH_CONTEXT 1 |
| 81 | #define GET_STACK_TRACE_OR_FRAMES \ |
| 82 | GetStackTraceWithContext(void **result, int max_depth, \ |
| 83 | int skip_count, const void *ucp) |
| 84 | #include STACKTRACE_INL_HEADER |
| 85 | #undef IS_STACK_FRAMES |
| 86 | #undef IS_WITH_CONTEXT |
| 87 | #undef GET_STACK_TRACE_OR_FRAMES |
| 88 | |
| 89 | #define IS_STACK_FRAMES 1 |
| 90 | #define IS_WITH_CONTEXT 1 |
| 91 | #define GET_STACK_TRACE_OR_FRAMES \ |
| 92 | GetStackFramesWithContext(void **result, int *sizes, int max_depth, \ |
| 93 | int skip_count, const void *ucp) |
| 94 | #include STACKTRACE_INL_HEADER |
| 95 | #undef IS_STACK_FRAMES |
| 96 | #undef IS_WITH_CONTEXT |
| 97 | #undef GET_STACK_TRACE_OR_FRAMES |
| 98 | |
| 99 | #elif 0 |
| 100 | // This is for the benefit of code analysis tools that may have |
| 101 | // trouble with the computed #include above. |
| 102 | # include "stacktrace_x86-inl.h" |
| 103 | # include "stacktrace_libunwind-inl.h" |
| 104 | # include "stacktrace_generic-inl.h" |
| 105 | # include "stacktrace_powerpc-inl.h" |
| 106 | # include "stacktrace_win32-inl.h" |
| 107 | # include "stacktrace_arm-inl.h" |
| 108 | #else |
| 109 | # error Cannot calculate stack trace: will need to write for your environment |
| 110 | #endif |
