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| 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 #if defined(TYPE_PROFILING) | |
| 6 | |
| 7 #include <config.h> | |
| 8 | |
| 9 #include <new> | |
| 10 #include <stddef.h> | |
| 11 #include <typeinfo> | |
| 12 | |
| 13 #include <gperftools/type_profiler_map.h> | |
| 14 | |
| 15 #include "addressmap-inl.h" | |
| 16 #include "base/logging.h" | |
| 17 #include "base/low_level_alloc.h" | |
| 18 #include "base/spinlock.h" | |
| 19 #include "tcmalloc_guard.h" | |
| 20 | |
| 21 namespace { | |
| 22 | |
| 23 const TCMallocGuard tcmalloc_initializer; | |
| 24 | |
| 25 //---------------------------------------------------------------------- | |
| 26 // A struct to store size and type_info of an object | |
| 27 //---------------------------------------------------------------------- | |
| 28 | |
| 29 struct ObjectInfo { | |
| 30 public: | |
| 31 ObjectInfo(): size(0), type(NULL) {} | |
| 32 ObjectInfo(size_t size_arg, const std::type_info* type_arg) | |
| 33 : size(size_arg), | |
| 34 type(type_arg) { | |
| 35 } | |
| 36 | |
| 37 size_t size; | |
| 38 const std::type_info* type; | |
| 39 }; | |
| 40 | |
| 41 //---------------------------------------------------------------------- | |
| 42 // Locking | |
| 43 //---------------------------------------------------------------------- | |
| 44 | |
| 45 SpinLock g_type_profiler_lock(SpinLock::LINKER_INITIALIZED); | |
| 46 | |
| 47 //---------------------------------------------------------------------- | |
| 48 // Simple allocator for type_info map's internal memory | |
| 49 //---------------------------------------------------------------------- | |
| 50 | |
| 51 LowLevelAlloc::Arena* g_type_profiler_map_memory = NULL; | |
| 52 | |
| 53 void* TypeProfilerMalloc(size_t bytes) { | |
| 54 return LowLevelAlloc::AllocWithArena(bytes, g_type_profiler_map_memory); | |
| 55 } | |
| 56 | |
| 57 void TypeProfilerFree(void* p) { | |
| 58 LowLevelAlloc::Free(p); | |
| 59 } | |
| 60 | |
| 61 //---------------------------------------------------------------------- | |
| 62 // Profiling control/state data | |
| 63 //---------------------------------------------------------------------- | |
| 64 | |
| 65 AddressMap<ObjectInfo>* g_type_profiler_map = NULL; | |
| 66 | |
| 67 //---------------------------------------------------------------------- | |
| 68 // Manage type_info map | |
| 69 //---------------------------------------------------------------------- | |
| 70 | |
| 71 void InitializeTypeProfilerMemory() { | |
| 72 if (g_type_profiler_map_memory != NULL) { | |
| 73 RAW_DCHECK(g_type_profiler_map != NULL, "TypeProfilerMap is NULL"); | |
| 74 return; | |
| 75 } | |
| 76 | |
| 77 g_type_profiler_map_memory = | |
| 78 LowLevelAlloc::NewArena(0, LowLevelAlloc::DefaultArena()); | |
| 79 | |
| 80 g_type_profiler_map = | |
| 81 new(TypeProfilerMalloc(sizeof(*g_type_profiler_map))) | |
| 82 AddressMap<ObjectInfo>(TypeProfilerMalloc, TypeProfilerFree); | |
| 83 } | |
| 84 | |
| 85 } // namespace | |
| 86 | |
| 87 void InsertType(void* address, size_t size, const std::type_info& type) { | |
| 88 SpinLockHolder lock(&g_type_profiler_lock); | |
| 89 InitializeTypeProfilerMemory(); | |
| 90 | |
| 91 g_type_profiler_map->Insert(address, ObjectInfo(size, &type)); | |
| 92 } | |
| 93 | |
| 94 void EraseType(void* address) { | |
| 95 SpinLockHolder lock(&g_type_profiler_lock); | |
| 96 InitializeTypeProfilerMemory(); | |
| 97 | |
| 98 ObjectInfo obj; | |
| 99 g_type_profiler_map->FindAndRemove(address, &obj); | |
| 100 } | |
| 101 | |
| 102 const std::type_info* LookupType(const void* address) { | |
| 103 SpinLockHolder lock(&g_type_profiler_lock); | |
| 104 InitializeTypeProfilerMemory(); | |
| 105 | |
| 106 const ObjectInfo* found = g_type_profiler_map->Find(address); | |
| 107 if (found == NULL) | |
| 108 return NULL; | |
| 109 return found->type; | |
| 110 } | |
| 111 | |
| 112 #endif // defined(TYPE_PROFILING) | |
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Chromium Code Reviews
Issue 1331973002:
Remove clang type profiler and deep memory profiler. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master