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1 // Copyright (c) 2014 Google Inc. | 1 // Copyright (c) 2014 Google Inc. |
2 // | 2 // |
3 // Use of this source code is governed by a BSD-style license that can be | 3 // Use of this source code is governed by a BSD-style license that can be |
4 // found in the LICENSE file. | 4 // found in the LICENSE file. |
5 | 5 |
6 // This header file defines the set of trace_event macros without specifying | 6 // This header file defines the set of trace_event macros without specifying |
7 // how the events actually get collected and stored. If you need to expose trace | 7 // how the events actually get collected and stored. If you need to expose trace |
8 // events to some other universe, you can copy-and-paste this file as well as | 8 // events to some other universe, you can copy-and-paste this file as well as |
9 // trace_event.h, modifying the macros contained there as necessary for the | 9 // trace_event.h, modifying the macros contained there as necessary for the |
10 // target platform. The end result is that multiple libraries can funnel events | 10 // target platform. The end result is that multiple libraries can funnel events |
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942 | 942 |
943 // TraceID encapsulates an ID that can either be an integer or pointer. Pointers | 943 // TraceID encapsulates an ID that can either be an integer or pointer. Pointers |
944 // are by default mangled with the Process ID so that they are unlikely to | 944 // are by default mangled with the Process ID so that they are unlikely to |
945 // collide when the same pointer is used on different processes. | 945 // collide when the same pointer is used on different processes. |
946 class TraceID { | 946 class TraceID { |
947 public: | 947 public: |
948 class DontMangle { | 948 class DontMangle { |
949 public: | 949 public: |
950 explicit DontMangle(const void* id) | 950 explicit DontMangle(const void* id) |
951 : data_(static_cast<uint64_t>( | 951 : data_(static_cast<uint64_t>( |
952 reinterpret_cast<unsigned long>(id))) {} | 952 reinterpret_cast<uintptr_t>(id))) {} |
953 explicit DontMangle(uint64_t id) : data_(id) {} | 953 explicit DontMangle(uint64_t id) : data_(id) {} |
954 explicit DontMangle(unsigned int id) : data_(id) {} | 954 explicit DontMangle(unsigned int id) : data_(id) {} |
955 explicit DontMangle(unsigned short id) : data_(id) {} | 955 explicit DontMangle(unsigned short id) : data_(id) {} |
956 explicit DontMangle(unsigned char id) : data_(id) {} | 956 explicit DontMangle(unsigned char id) : data_(id) {} |
957 explicit DontMangle(long long id) | 957 explicit DontMangle(long long id) |
958 : data_(static_cast<uint64_t>(id)) {} | 958 : data_(static_cast<uint64_t>(id)) {} |
959 explicit DontMangle(long id) | 959 explicit DontMangle(long id) |
960 : data_(static_cast<uint64_t>(id)) {} | 960 : data_(static_cast<uint64_t>(id)) {} |
961 explicit DontMangle(int id) | 961 explicit DontMangle(int id) |
962 : data_(static_cast<uint64_t>(id)) {} | 962 : data_(static_cast<uint64_t>(id)) {} |
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985 : data_(static_cast<uint64_t>(id)) {} | 985 : data_(static_cast<uint64_t>(id)) {} |
986 explicit ForceMangle(signed char id) | 986 explicit ForceMangle(signed char id) |
987 : data_(static_cast<uint64_t>(id)) {} | 987 : data_(static_cast<uint64_t>(id)) {} |
988 uint64_t data() const { return data_; } | 988 uint64_t data() const { return data_; } |
989 private: | 989 private: |
990 uint64_t data_; | 990 uint64_t data_; |
991 }; | 991 }; |
992 | 992 |
993 TraceID(const void* id, unsigned char* flags) | 993 TraceID(const void* id, unsigned char* flags) |
994 : data_(static_cast<uint64_t>( | 994 : data_(static_cast<uint64_t>( |
995 reinterpret_cast<unsigned long>(id))) { | 995 reinterpret_cast<uintptr_t>(id))) { |
996 *flags |= TRACE_EVENT_FLAG_MANGLE_ID; | 996 *flags |= TRACE_EVENT_FLAG_MANGLE_ID; |
997 } | 997 } |
998 TraceID(ForceMangle id, unsigned char* flags) : data_(id.data()) { | 998 TraceID(ForceMangle id, unsigned char* flags) : data_(id.data()) { |
999 *flags |= TRACE_EVENT_FLAG_MANGLE_ID; | 999 *flags |= TRACE_EVENT_FLAG_MANGLE_ID; |
1000 } | 1000 } |
1001 TraceID(DontMangle id, unsigned char* flags) : data_(id.data()) { | 1001 TraceID(DontMangle id, unsigned char* flags) : data_(id.data()) { |
1002 } | 1002 } |
1003 TraceID(uint64_t id, unsigned char* flags) | 1003 TraceID(uint64_t id, unsigned char* flags) |
1004 : data_(id) { (void)flags; } | 1004 : data_(id) { (void)flags; } |
1005 TraceID(unsigned int id, unsigned char* flags) | 1005 TraceID(unsigned int id, unsigned char* flags) |
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1236 } | 1236 } |
1237 | 1237 |
1238 private: | 1238 private: |
1239 const char* previous_state_; | 1239 const char* previous_state_; |
1240 }; | 1240 }; |
1241 | 1241 |
1242 } // namespace tracing_internals | 1242 } // namespace tracing_internals |
1243 } // namespace skia | 1243 } // namespace skia |
1244 | 1244 |
1245 #endif | 1245 #endif |
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