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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_ATOMIC_H_ | 5 #ifndef VM_ATOMIC_H_ |
6 #define VM_ATOMIC_H_ | 6 #define VM_ATOMIC_H_ |
7 | 7 |
8 #include "platform/globals.h" | 8 #include "platform/globals.h" |
9 | 9 |
10 #include "vm/allocation.h" | 10 #include "vm/allocation.h" |
11 #include "vm/simulator.h" | 11 #include "vm/simulator.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 class AtomicOperations : public AllStatic { | 15 class AtomicOperations : public AllStatic { |
16 public: | 16 public: |
17 // Atomically fetch the value at p and increment the value at p. | 17 // Atomically fetch the value at p and increment the value at p. |
18 // Returns the original value at p. | 18 // Returns the original value at p. |
19 // | 19 // |
20 // NOTE: Not to be used for any atomic operations involving memory locations | 20 // NOTE: Not to be used for any atomic operations involving memory locations |
21 // that are accessed by generated code. | 21 // that are accessed by generated code. |
22 static uintptr_t FetchAndIncrement(uintptr_t* p); | 22 static uintptr_t FetchAndIncrement(uintptr_t* p); |
23 | 23 |
24 // Atomically increment the value at p by 'value'. | 24 // Atomically increment the value at p by 'value'. |
25 // | 25 // |
26 // NOTE: Not to be used for any atomic operations involving memory locations | 26 // NOTE: Not to be used for any atomic operations involving memory locations |
27 // that are accessed by generated code. | 27 // that are accessed by generated code. |
28 static void IncrementBy(intptr_t* p, intptr_t value); | 28 static void IncrementBy(intptr_t* p, intptr_t value); |
| 29 static void IncrementInt64By(int64_t* p, int64_t value); |
29 | 30 |
30 // Atomically fetch the value at p and decrement the value at p. | 31 // Atomically fetch the value at p and decrement the value at p. |
31 // Returns the original value at p. | 32 // Returns the original value at p. |
32 // | 33 // |
33 // NOTE: Not to be used for any atomic operations involving memory locations | 34 // NOTE: Not to be used for any atomic operations involving memory locations |
34 // that are accessed by generated code. | 35 // that are accessed by generated code. |
35 static uintptr_t FetchAndDecrement(uintptr_t* p); | 36 static uintptr_t FetchAndDecrement(uintptr_t* p); |
36 | 37 |
37 // Atomically decrement the value at p by 'value'. | 38 // Atomically decrement the value at p by 'value'. |
38 // | 39 // |
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74 #include "vm/atomic_linux.h" | 75 #include "vm/atomic_linux.h" |
75 #elif defined(TARGET_OS_MACOS) | 76 #elif defined(TARGET_OS_MACOS) |
76 #include "vm/atomic_macos.h" | 77 #include "vm/atomic_macos.h" |
77 #elif defined(TARGET_OS_WINDOWS) | 78 #elif defined(TARGET_OS_WINDOWS) |
78 #include "vm/atomic_win.h" | 79 #include "vm/atomic_win.h" |
79 #else | 80 #else |
80 #error Unknown target os. | 81 #error Unknown target os. |
81 #endif | 82 #endif |
82 | 83 |
83 #endif // VM_ATOMIC_H_ | 84 #endif // VM_ATOMIC_H_ |
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