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| 1 // Copyright (c) 2014, the Dartino project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, the Dartino 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.md file. | 3 // BSD-style license that can be found in the LICENSE.md file. | 
| 4 | 4 | 
| 5 #ifndef SRC_VM_THREAD_CMSIS_H_ | 5 #ifndef SRC_VM_THREAD_CMSIS_H_ | 
| 6 #define SRC_VM_THREAD_CMSIS_H_ | 6 #define SRC_VM_THREAD_CMSIS_H_ | 
| 7 | 7 | 
| 8 #ifndef SRC_VM_THREAD_H_ | 8 #ifndef SRC_VM_THREAD_H_ | 
| 9 #error "Don't include thread_cmsis.h directly, include thread.h." | 9 #error "Don't include thread_cmsis.h directly, include thread.h." | 
| 10 #endif | 10 #endif | 
| 11 | 11 | 
| 12 #include <cmsis_os.h> | 12 #include <cmsis_os.h> | 
| 13 #include <errno.h> | 13 #include <errno.h> | 
| 14 | 14 | 
| 15 #include "src/shared/assert.h" | 15 #include "src/shared/assert.h" | 
| 16 | 16 | 
| 17 namespace fletch { | 17 namespace dartino { | 
| 18 | 18 | 
| 19 // A ThreadIdentifier represents a thread identifier for a thread. | 19 // A ThreadIdentifier represents a thread identifier for a thread. | 
| 20 // The ThreadIdentifier does not own the underlying OS handle. | 20 // The ThreadIdentifier does not own the underlying OS handle. | 
| 21 // Thread handles can be used for referring to threads and testing equality. | 21 // Thread handles can be used for referring to threads and testing equality. | 
| 22 class ThreadIdentifier { | 22 class ThreadIdentifier { | 
| 23  public: | 23  public: | 
| 24   ThreadIdentifier() : thread_(osThreadGetId()) {} | 24   ThreadIdentifier() : thread_(osThreadGetId()) {} | 
| 25 | 25 | 
| 26   // Test for thread running. | 26   // Test for thread running. | 
| 27   bool IsSelf() const { return osThreadGetId() == thread_; } | 27   bool IsSelf() const { return osThreadGetId() == thread_; } | 
| 28 | 28 | 
| 29   // Try to join the thread identified by this [ThreadIdentifier]. | 29   // Try to join the thread identified by this [ThreadIdentifier]. | 
| 30   // | 30   // | 
| 31   // A thread can only be joined once. | 31   // A thread can only be joined once. | 
| 32   void Join() { | 32   void Join() { | 
| 33     printf("ThreadIdentifier::Join is not supported on CMSIS.\n"); | 33     printf("ThreadIdentifier::Join is not supported on CMSIS.\n"); | 
| 34     fflush(stdout); | 34     fflush(stdout); | 
| 35   } | 35   } | 
| 36 | 36 | 
| 37  private: | 37  private: | 
| 38   friend class Thread; | 38   friend class Thread; | 
| 39 | 39 | 
| 40   explicit ThreadIdentifier(osThreadId thread) : thread_(thread) {} | 40   explicit ThreadIdentifier(osThreadId thread) : thread_(thread) {} | 
| 41 | 41 | 
| 42   osThreadId thread_; | 42   osThreadId thread_; | 
| 43 }; | 43 }; | 
| 44 | 44 | 
| 45 }  // namespace fletch | 45 }  // namespace dartino | 
| 46 | 46 | 
| 47 #endif  // SRC_VM_THREAD_CMSIS_H_ | 47 #endif  // SRC_VM_THREAD_CMSIS_H_ | 
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