From 0235385341f4c37ee40d1763c3103bb5b7befea8 Mon Sep 17 00:00:00 2001 From: Jon Medhurst Date: Thu, 30 Oct 2014 16:32:27 +0000 Subject: gator: Version 5.20 Signed-off-by: Jon Medhurst --- tools/gator/daemon/Fifo.h | 48 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 tools/gator/daemon/Fifo.h (limited to 'tools/gator/daemon/Fifo.h') diff --git a/tools/gator/daemon/Fifo.h b/tools/gator/daemon/Fifo.h new file mode 100644 index 000000000000..21c8d8580391 --- /dev/null +++ b/tools/gator/daemon/Fifo.h @@ -0,0 +1,48 @@ +/** + * Copyright (C) ARM Limited 2010-2014. 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 +#define sem_t HANDLE +#define sem_init(sem, pshared, value) ((*(sem) = CreateSemaphore(NULL, value, LONG_MAX, 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 +#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__ -- cgit v1.2.3