initial commit

[ROCm/clr commit: 3694ab2ce8]
2014-07-04 16:17:05 -04:00
parent b0b5b33fcf
commit f80f2f233c
351 changed files with 113713 additions and 1 deletions
@@ -0,0 +1,65 @@
+//
+// Copyright (c) 2008,2010 Advanced Micro Devices, Inc. All rights reserved.
+//
+
+#ifndef SEMAPHORE_HPP_
+#define SEMAPHORE_HPP_
+
+#include "top.hpp"
+#include "thread/atomic.hpp"
+#include "utils/util.hpp"
+
+#if defined(__linux__)
+# include <semaphore.h>
+#endif /*linux*/
+
+
+namespace amd {
+
+/*! \addtogroup Threads
+ *  @{
+ *
+ *  \addtogroup Synchronization
+ *  @{
+ */
+
+class Thread;
+
+//! \brief Counting semaphore
+class Semaphore : public HeapObject
+{
+private:
+    Atomic<int> state_; //!< This semaphore's value.
+
+#ifdef _WIN32
+    void* handle_; //!< The semaphore object's handle.
+    char padding_[64-sizeof(void*)-sizeof(Atomic<int>)];
+#else // !_WIN32
+    sem_t sem_; //!< The semaphore object's identifier.
+    char padding_[64-sizeof(sem_t)-sizeof(Atomic<int>)];
+#endif /*!_WIN32*/
+
+public:
+    Semaphore();
+    ~Semaphore();
+
+    //! \brief Decrement this semaphore
+    void wait();
+
+    //! \brief Increment this semaphore
+    void post();
+
+    //! \brief Reset this semaphore.
+    void reset()
+    {
+        state_.swap(0);
+    }
+};
+
+/*! @}
+ *  @}
+ */
+
+} // namespace amd
+
+#endif /*SEMAPHORE_HPP_*/