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