| 1 | // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
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| 2 | // for details. All rights reserved. Use of this source code is governed by a |
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| 3 | // BSD-style license that can be found in the LICENSE file. |
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| 4 | |
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| 5 | #ifndef RUNTIME_BIN_THREAD_H_ |
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| 6 | #define RUNTIME_BIN_THREAD_H_ |
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| 7 | |
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| 8 | #include "platform/globals.h" |
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| 9 | |
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| 10 | namespace dart { |
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| 11 | namespace bin { |
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| 12 | class Thread; |
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| 13 | class Mutex; |
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| 14 | class Monitor; |
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| 15 | } // namespace bin |
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| 16 | } // namespace dart |
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| 17 | |
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| 18 | // Declare the OS-specific types ahead of defining the generic classes. |
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| 19 | #if defined(DART_USE_ABSL) |
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| 20 | #include "bin/thread_absl.h" |
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| 21 | #elif defined(DART_HOST_OS_ANDROID) |
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| 22 | #include "bin/thread_android.h" |
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| 23 | #elif defined(DART_HOST_OS_FUCHSIA) |
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| 24 | #include "bin/thread_fuchsia.h" |
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| 25 | #elif defined(DART_HOST_OS_LINUX) |
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| 26 | #include "bin/thread_linux.h" |
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| 27 | #elif defined(DART_HOST_OS_MACOS) |
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| 28 | #include "bin/thread_macos.h" |
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| 29 | #elif defined(DART_HOST_OS_WINDOWS) |
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| 30 | #include "bin/thread_win.h" |
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| 31 | #else |
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| 32 | #error Unknown target os. |
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| 33 | #endif |
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| 34 | |
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| 35 | namespace dart { |
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| 36 | namespace bin { |
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| 37 | |
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| 38 | class Thread { |
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| 39 | public: |
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| 40 | static const ThreadId kInvalidThreadId; |
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| 41 | |
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| 42 | typedef void (*ThreadStartFunction)(uword parameter); |
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| 43 | |
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| 44 | // Start a thread running the specified function. Returns 0 if the |
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| 45 | // thread started successfully and a system specific error code if |
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| 46 | // the thread failed to start. |
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| 47 | static int Start(const char* name, |
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| 48 | ThreadStartFunction function, |
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| 49 | uword parameters); |
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| 50 | |
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| 51 | static intptr_t GetMaxStackSize(); |
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| 52 | static ThreadId GetCurrentThreadId(); |
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| 53 | static bool Compare(ThreadId a, ThreadId b); |
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| 54 | |
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| 55 | static void InitOnce(); |
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| 56 | |
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| 57 | private: |
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| 58 | DISALLOW_ALLOCATION(); |
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| 59 | DISALLOW_IMPLICIT_CONSTRUCTORS(Thread); |
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| 60 | }; |
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| 61 | |
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| 62 | class Mutex { |
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| 63 | public: |
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| 64 | Mutex(); |
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| 65 | ~Mutex(); |
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| 66 | |
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| 67 | void Lock(); |
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| 68 | bool TryLock(); |
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| 69 | void Unlock(); |
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| 70 | |
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| 71 | private: |
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| 72 | MutexData data_; |
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| 73 | |
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| 74 | DISALLOW_COPY_AND_ASSIGN(Mutex); |
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| 75 | }; |
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| 76 | |
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| 77 | class Monitor { |
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| 78 | public: |
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| 79 | enum WaitResult { kNotified, kTimedOut }; |
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| 80 | |
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| 81 | static constexpr int64_t kNoTimeout = 0; |
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| 82 | |
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| 83 | Monitor(); |
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| 84 | ~Monitor(); |
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| 85 | |
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| 86 | void Enter(); |
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| 87 | void Exit(); |
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| 88 | |
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| 89 | // Wait for notification or timeout. |
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| 90 | WaitResult Wait(int64_t millis); |
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| 91 | WaitResult WaitMicros(int64_t micros); |
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| 92 | |
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| 93 | // Notify waiting threads. |
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| 94 | void Notify(); |
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| 95 | void NotifyAll(); |
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| 96 | |
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| 97 | private: |
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| 98 | MonitorData data_; // OS-specific data. |
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| 99 | |
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| 100 | DISALLOW_COPY_AND_ASSIGN(Monitor); |
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| 101 | }; |
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| 102 | |
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| 103 | } // namespace bin |
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| 104 | } // namespace dart |
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| 105 | |
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| 106 | #endif // RUNTIME_BIN_THREAD_H_ |
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| 107 | |
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