15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2009, 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: Andrew Fikes 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Utility class for coalescing sampled stack traces. Not thread-safe. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef TCMALLOC_STACK_TRACE_TABLE_H_ 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define TCMALLOC_STACK_TRACE_TABLE_H_ 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <config.h> 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef HAVE_STDINT_H 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdint.h> // for uintptr_t 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "common.h" 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace tcmalloc { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class PERFTOOLS_DLL_DECL StackTraceTable { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // REQUIRES: L < pageheap_lock 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StackTraceTable(); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~StackTraceTable(); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Adds stack trace "t" to table. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // REQUIRES: L >= pageheap_lock 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void AddTrace(const StackTrace& t); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns stack traces formatted per MallocExtension guidelines. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // May return NULL on error. Clears state before returning. 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // REQUIRES: L < pageheap_lock 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void** ReadStackTracesAndClear(); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Exposed for PageHeapAllocator 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct Bucket { 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Key 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uintptr_t hash; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StackTrace trace; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Payload 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int count; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bucket* next; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool KeyEqual(uintptr_t h, const StackTrace& t) const; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For testing 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int depth_total() const { return depth_total_; } 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bucket_total() const { return bucket_total_; } 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kHashTableSize = 1 << 14; // => table_ is 128k 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool error_; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int depth_total_; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bucket_total_; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bucket** table_; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace tcmalloc 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // TCMALLOC_STACK_TRACE_TABLE_H_ 92