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 (at) 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 40 namespace tcmalloc { 41 42 SpinLock Static::pageheap_lock_(SpinLock::LINKER_INITIALIZED); 43 SizeMap Static::sizemap_; 44 CentralFreeListPadded Static::central_cache_[kNumClasses]; 45 PageHeapAllocator<Span> Static::span_allocator_; 46 PageHeapAllocator<StackTrace> Static::stacktrace_allocator_; 47 Span Static::sampled_objects_; 48 PageHeapAllocator<StackTraceTable::Bucket> Static::bucket_allocator_; 49 StackTrace* Static::growth_stacks_ = NULL; 50 PageHeap* Static::pageheap_ = NULL; 51 52 void 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
