base/allocator/type_profiler.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_ALLOCATOR_TYPE_PROFILER_H_
   6 #define BASE_ALLOCATOR_TYPE_PROFILER_H_
   7
   8 #if defined(TYPE_PROFILING)
   9
  10 #include <stddef.h>  // for size_t
  11 #include <typeinfo>  // for std::typeinfo
  12
  13 namespace base {
  14 namespace type_profiler {
  15
  16 typedef void* InterceptFunction(void*, size_t, const std::type_info&);
  17
  18 class InterceptFunctions {
  19  public:
  20   // It must be called only once in a process while it is in single-thread.
  21   // For now, ContentMainRunnerImpl::Initialize is the only supposed caller
  22   // of this function except for single-threaded unit tests.
  23   static void SetFunctions(InterceptFunction* new_intercept,
  24                            InterceptFunction* delete_intercept);
  25
  26  private:
  27   friend class TypeProfilerTest;
  28
  29   // These functions are not thread safe.
  30   // They must be used only from single-threaded unit tests.
  31   static void ResetFunctions();
  32   static bool IsAvailable();
  33 };
  34
  35 }  // namespace type_profiler
  36 }  // namespace base
  37
  38 #endif  // defined(TYPE_PROFILING)
  39
  40 #endif  // BASE_ALLOCATOR_TYPE_PROFILER_H_