15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2005, Google Inc. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// All rights reserved. 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Redistribution and use in source and binary forms, with or without 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// modification, are permitted provided that the following conditions are 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// met: 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions of source code must retain the above copyright 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// notice, this list of conditions and the following disclaimer. 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions in binary form must reproduce the above 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// copyright notice, this list of conditions and the following disclaimer 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// in the documentation and/or other materials provided with the 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// distribution. 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Neither the name of Google Inc. nor the names of its 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// contributors may be used to endorse or promote products derived from 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// this software without specific prior written permission. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// --- 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Author: Sanjay Ghemawat 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Portable implementation - just use glibc 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note: The glibc implementation may cause a call to malloc. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This can cause a deadlock in HeapProfiler. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef BASE_STACKTRACE_GENERIC_INL_H_ 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define BASE_STACKTRACE_GENERIC_INL_H_ 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note: this file is included into stacktrace.cc more than once. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Anything that should only be defined once should be here: 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <execinfo.h> 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "gperftools/stacktrace.h" 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // BASE_STACKTRACE_GENERIC_INL_H_ 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Note: this part of the file is included several times. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Do not put globals below. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The following 4 functions are generated from the code below: 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// GetStack{Trace,Frames}() 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// GetStack{Trace,Frames}WithContext() 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// These functions take the following args: 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// void** result: the stack-trace, as an array 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// int* sizes: the size of each stack frame, as an array 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// (GetStackFrames* only) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// int max_depth: the size of the result (and sizes) array(s) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// int skip_count: how many stack pointers to skip before storing in result 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// void* ucp: a ucontext_t* (GetStack{Trace,Frames}WithContext only) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int GET_STACK_TRACE_OR_FRAMES { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kStackLength = 64; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void * stack[kStackLength]; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int size; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size = backtrace(stack, kStackLength); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) skip_count++; // we want to skip the current frame as well 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int result_count = size - skip_count; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result_count < 0) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_count = 0; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result_count > max_depth) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result_count = max_depth; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < result_count; i++) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result[i] = stack[i + skip_count]; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if IS_STACK_FRAMES 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No implementation for finding out the stack frame sizes yet. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memset(sizes, 0, sizeof(*sizes) * result_count); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return result_count; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 84