static_vars.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
1// Copyright (c) 2008, 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: Ken Ashcraft <opensource@google.com> 32 33#include "static_vars.h" 34#include <stddef.h> // for NULL 35#include <new> // for operator new 36#include "internal_logging.h" // for CHECK_CONDITION 37#include "common.h" 38#include "sampler.h" // for Sampler 39 40namespace tcmalloc { 41 42SpinLock Static::pageheap_lock_(SpinLock::LINKER_INITIALIZED); 43SizeMap Static::sizemap_; 44CentralFreeListPadded Static::central_cache_[kNumClasses]; 45PageHeapAllocator<Span> Static::span_allocator_; 46PageHeapAllocator<StackTrace> Static::stacktrace_allocator_; 47Span Static::sampled_objects_; 48PageHeapAllocator<StackTraceTable::Bucket> Static::bucket_allocator_; 49StackTrace* Static::growth_stacks_ = NULL; 50PageHeap* Static::pageheap_ = NULL; 51 52void Static::InitStaticVars() { 53 sizemap_.Init(); 54 span_allocator_.Init(); 55 span_allocator_.New(); // Reduce cache conflicts 56 span_allocator_.New(); // Reduce cache conflicts 57 stacktrace_allocator_.Init(); 58 bucket_allocator_.Init(); 59 // Do a bit of sanitizing: make sure central_cache is aligned properly 60 CHECK_CONDITION((sizeof(central_cache_[0]) % 64) == 0); 61 for (int i = 0; i < kNumClasses; ++i) { 62 central_cache_[i].Init(i); 63 } 64 // It's important to have PageHeap allocated, not in static storage, 65 // so that HeapLeakChecker does not consider all the byte patterns stored 66 // in is caches as pointers that are sources of heap object liveness, 67 // which leads to it missing some memory leaks. 68 pageheap_ = new (MetaDataAlloc(sizeof(PageHeap))) PageHeap; 69 DLL_Init(&sampled_objects_); 70 Sampler::InitStatics(); 71} 72 73} // namespace tcmalloc 74