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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // WARNING: Thread local storage is a bit tricky to get right. Please make | 5 // WARNING: Thread local storage is a bit tricky to get right. Please make |
6 // sure that this is really the proper solution for what you're trying to | 6 // sure that this is really the proper solution for what you're trying to |
7 // achieve. Don't prematurely optimize, most likely you can just use a Lock. | 7 // achieve. Don't prematurely optimize, most likely you can just use a Lock. |
8 // | 8 // |
9 // These classes implement a wrapper around the platform's TLS storage | 9 // These classes implement a wrapper around the platform's TLS storage |
10 // mechanism. On construction, they will allocate a TLS slot, and free the | 10 // mechanism. On construction, they will allocate a TLS slot, and free the |
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41 // | 41 // |
42 // // Return the current MyClass associated with the calling thread, can be | 42 // // Return the current MyClass associated with the calling thread, can be |
43 // // NULL if there isn't a MyClass associated. | 43 // // NULL if there isn't a MyClass associated. |
44 // MyClass* MyClass::current() { | 44 // MyClass* MyClass::current() { |
45 // return Singleton<ThreadLocalPointer<MyClass> >::get()->Get(); | 45 // return Singleton<ThreadLocalPointer<MyClass> >::get()->Get(); |
46 // } | 46 // } |
47 | 47 |
48 #ifndef MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ | 48 #ifndef MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ |
49 #define MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ | 49 #define MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ |
50 | 50 |
51 #include "build/build_config.h" | 51 #ifndef _WIN32 |
52 | |
53 #if defined(OS_POSIX) | |
54 #include <pthread.h> | 52 #include <pthread.h> |
55 #endif | 53 #endif |
56 | 54 |
57 #include "mojo/public/system/macros.h" | 55 #include "mojo/public/system/macros.h" |
58 | 56 |
59 namespace mojo { | 57 namespace mojo { |
60 namespace internal { | 58 namespace internal { |
61 | 59 |
62 // Helper functions that abstract the cross-platform APIs. Do not use directly. | 60 // Helper functions that abstract the cross-platform APIs. Do not use directly. |
63 struct ThreadLocalPlatform { | 61 struct ThreadLocalPlatform { |
64 #if defined(OS_WIN) | 62 #ifdef _WIN32 |
65 typedef unsigned long SlotType; | 63 typedef unsigned long SlotType; |
66 #elif defined(OS_POSIX) | 64 #else |
67 typedef pthread_key_t SlotType; | 65 typedef pthread_key_t SlotType; |
68 #endif | 66 #endif |
69 | 67 |
70 static void AllocateSlot(SlotType* slot); | 68 static void AllocateSlot(SlotType* slot); |
71 static void FreeSlot(SlotType slot); | 69 static void FreeSlot(SlotType slot); |
72 static void* GetValueFromSlot(SlotType slot); | 70 static void* GetValueFromSlot(SlotType slot); |
73 static void SetValueInSlot(SlotType slot, void* value); | 71 static void SetValueInSlot(SlotType slot, void* value); |
74 }; | 72 }; |
75 | 73 |
76 } // namespace internal | 74 } // namespace internal |
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119 | 117 |
120 private: | 118 private: |
121 ThreadLocalPointer<void> tlp_; | 119 ThreadLocalPointer<void> tlp_; |
122 | 120 |
123 MOJO_DISALLOW_COPY_AND_ASSIGN(ThreadLocalBoolean); | 121 MOJO_DISALLOW_COPY_AND_ASSIGN(ThreadLocalBoolean); |
124 }; | 122 }; |
125 | 123 |
126 } // namespace mojo | 124 } // namespace mojo |
127 | 125 |
128 #endif // MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ | 126 #endif // MOJO_PUBLIC_UTILITY_THREAD_LOCAL_H_ |
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