third_party/tcmalloc/chromium/src/static_vars.cc

   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
  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