static_vars.cpp

// Copyright (c) 2008, Google Inc.
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// ---
// Author: Ken Ashcraft <opensource@google.com>

#include "static_vars.h"

namespace tcmalloc {

SpinLock Static::pageheap_lock_(SpinLock::LINKER_INITIALIZED);
SizeMap Static::sizemap_;
CentralFreeListPadded Static::central_cache_[kNumClasses];
PageHeapAllocator<Span> Static::span_allocator_;
PageHeapAllocator<StackTrace> Static::stacktrace_allocator_;
Span Static::sampled_objects_;
StackTrace* Static::growth_stacks_ = NULL;
char Static::pageheap_memory_[sizeof(PageHeap)];

void Static::InitStaticVars() {
  sizemap_.Init();
  span_allocator_.Init();
  span_allocator_.New(); // Reduce cache conflicts
  span_allocator_.New(); // Reduce cache conflicts
  stacktrace_allocator_.Init();
  // Do a bit of sanitizing: make sure central_cache is aligned properly
  CHECK_CONDITION((sizeof(central_cache_[0]) % 64) == 0);
  for (int i = 0; i < kNumClasses; ++i) {
    central_cache_[i].Init(i);
  }
  new ((void*)pageheap_memory_) PageHeap;
  DLL_Init(&sampled_objects_);
}

}  // namespace tcmalloc