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//===-- PThreadEvent.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Created by Greg Clayton on 6/16/07.
//
//===----------------------------------------------------------------------===//
#ifndef __PThreadEvent_h__
#define __PThreadEvent_h__
#include "PThreadCondition.h"
#include "PThreadMutex.h"
#include <stdint.h>
#include <time.h>
class PThreadEvent {
public:
PThreadEvent(uint32_t bits = 0, uint32_t validBits = 0);
~PThreadEvent();
uint32_t NewEventBit();
void FreeEventBits(const uint32_t mask);
void ReplaceEventBits(const uint32_t bits);
uint32_t GetEventBits() const;
void SetEvents(const uint32_t mask);
void ResetEvents(const uint32_t mask);
// Wait for events to be set or reset. These functions take an optional
// timeout value. If timeout is NULL an infinite timeout will be used.
uint32_t
WaitForSetEvents(const uint32_t mask,
const struct timespec *timeout_abstime = NULL) const;
uint32_t
WaitForEventsToReset(const uint32_t mask,
const struct timespec *timeout_abstime = NULL) const;
uint32_t GetResetAckMask() const { return m_reset_ack_mask; }
uint32_t SetResetAckMask(uint32_t mask) { return m_reset_ack_mask = mask; }
uint32_t WaitForResetAck(const uint32_t mask,
const struct timespec *timeout_abstime = NULL) const;
protected:
//----------------------------------------------------------------------
// pthread condition and mutex variable to control access and allow
// blocking between the main thread and the spotlight index thread.
//----------------------------------------------------------------------
mutable PThreadMutex m_mutex;
mutable PThreadCondition m_set_condition;
mutable PThreadCondition m_reset_condition;
uint32_t m_bits;
uint32_t m_validBits;
uint32_t m_reset_ack_mask;
private:
PThreadEvent(const PThreadEvent &); // Outlaw copy constructor
PThreadEvent &operator=(const PThreadEvent &rhs);
};
#endif // #ifndef __PThreadEvent_h__
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