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