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-rw-r--r--tools/gator/daemon/Fifo.h48
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diff --git a/tools/gator/daemon/Fifo.h b/tools/gator/daemon/Fifo.h
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+/**
+ * Copyright (C) ARM Limited 2010-2013. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __FIFO_H__
+#define __FIFO_H__
+
+#ifdef WIN32
+#include <windows.h>
+#define sem_t HANDLE
+#define sem_init(sem, pshared, value) ((*(sem) = CreateSemaphore(NULL, value, INFINITE, NULL)) == NULL)
+#define sem_wait(sem) WaitForSingleObject(*(sem), INFINITE)
+#define sem_post(sem) ReleaseSemaphore(*(sem), 1, NULL)
+#define sem_destroy(sem) CloseHandle(*(sem))
+#else
+#include <semaphore.h>
+#endif
+
+class Fifo {
+public:
+ Fifo(int singleBufferSize, int totalBufferSize, sem_t* readerSem);
+ ~Fifo();
+ int numBytesFilled() const;
+ bool isEmpty() const;
+ bool isFull() const;
+ bool willFill(int additional) const;
+ char* start() const;
+ char* write(int length);
+ void release();
+ char* read(int *const length);
+
+private:
+ int mSingleBufferSize, mWrite, mRead, mReadCommit, mRaggedEnd, mWrapThreshold;
+ sem_t mWaitForSpaceSem;
+ sem_t* mReaderSem;
+ char* mBuffer;
+ bool mEnd;
+
+ // Intentionally unimplemented
+ Fifo(const Fifo &);
+ Fifo &operator=(const Fifo &);
+};
+
+#endif //__FIFO_H__