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FRC2016-old/wpilib/cpp/current/include/FRC_FPGA_ChipObject/tInterruptManager.h

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2016-01-28 11:33:19 -05:00
// Class for handling interrupts.
// Copyright (c) National Instruments 2008. All Rights Reserved.
#ifndef __tInterruptManager_h__
#define __tInterruptManager_h__
#include "tSystem.h"
namespace ni
{
namespace dsc
{
namespace osdep
{
class CriticalSection;
}
}
}
namespace nFPGA
{
typedef void (*tInterruptHandler)(uint32_t interruptAssertedMask, void *param);
class tInterruptManager : public tSystem
{
public:
tInterruptManager(uint32_t interruptMask, bool watcher, tRioStatusCode *status);
~tInterruptManager();
void registerHandler(tInterruptHandler handler, void *param, tRioStatusCode *status);
uint32_t watch(int32_t timeoutInMs, bool ignorePrevious, tRioStatusCode *status);
void enable(tRioStatusCode *status);
void disable(tRioStatusCode *status);
bool isEnabled(tRioStatusCode *status);
private:
class tInterruptThread;
friend class tInterruptThread;
void handler();
static int handlerWrapper(tInterruptManager *pInterrupt);
void acknowledge(tRioStatusCode *status);
void reserve(tRioStatusCode *status);
void unreserve(tRioStatusCode *status);
tInterruptHandler _handler;
uint32_t _interruptMask;
tInterruptThread *_thread;
NiFpga_IrqContext _rioContext;
bool _watcher;
bool _enabled;
void *_userParam;
// maintain the interrupts that are already dealt with.
static uint32_t _globalInterruptMask;
static ni::dsc::osdep::CriticalSection *_globalInterruptMaskSemaphore;
};
}
#endif // __tInterruptManager_h__