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1 /* | 1 /* |
2 * Copyright (C) 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2012 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef InstanceCounters_h | 31 #ifndef InstanceCounters_h |
32 #define InstanceCounters_h | 32 #define InstanceCounters_h |
33 | 33 |
34 #include "core/CoreExport.h" | 34 #include "core/CoreExport.h" |
35 #include "wtf/Allocator.h" | 35 #include "wtf/Allocator.h" |
| 36 #include "wtf/Atomics.h" |
36 | 37 |
37 #if ENABLE(ASSERT) | 38 #if ENABLE(ASSERT) |
38 #endif | 39 #endif |
39 | 40 |
40 namespace blink { | 41 namespace blink { |
41 | 42 |
42 class InstanceCounters { | 43 class InstanceCounters { |
43 STATIC_ONLY(InstanceCounters); | 44 STATIC_ONLY(InstanceCounters); |
44 public: | 45 public: |
45 enum CounterType { | 46 enum CounterType { |
46 ActiveDOMObjectCounter, | 47 ActiveDOMObjectCounter, |
47 AudioHandlerCounter, | 48 AudioHandlerCounter, |
48 DocumentCounter, | 49 DocumentCounter, |
49 FrameCounter, | 50 FrameCounter, |
50 JSEventListenerCounter, | 51 JSEventListenerCounter, |
51 LayoutObjectCounter, | 52 LayoutObjectCounter, |
52 NodeCounter, | 53 NodeCounter, |
53 ResourceCounter, | 54 ResourceCounter, |
54 ScriptPromiseCounter, | 55 ScriptPromiseCounter, |
55 V8PerContextDataCounter, | 56 V8PerContextDataCounter, |
56 | 57 |
57 // This value must be the last. | 58 // This value must be the last. |
58 CounterTypeLength, | 59 CounterTypeLength, |
59 }; | 60 }; |
60 | 61 |
61 static inline void incrementCounter(CounterType type) | 62 static inline void incrementCounter(CounterType type) |
62 { | 63 { |
63 ASSERT(isMainThread()); | 64 atomicIncrement(&s_counters[type]); |
64 ++s_counters[type]; | |
65 } | 65 } |
66 | 66 |
67 static inline void decrementCounter(CounterType type) | 67 static inline void decrementCounter(CounterType type) |
68 { | 68 { |
69 ASSERT(isMainThread()); | 69 atomicDecrement(&s_counters[type]); |
70 --s_counters[type]; | |
71 } | 70 } |
72 | 71 |
73 CORE_EXPORT static int counterValue(CounterType); | 72 CORE_EXPORT static int counterValue(CounterType); |
74 | 73 |
75 private: | 74 private: |
76 CORE_EXPORT static int s_counters[CounterTypeLength]; | 75 CORE_EXPORT static int s_counters[CounterTypeLength]; |
77 }; | 76 }; |
78 | 77 |
79 } // namespace blink | 78 } // namespace blink |
80 | 79 |
81 #endif // !defined(InstanceCounters_h) | 80 #endif // !defined(InstanceCounters_h) |
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