46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
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#if !defined(_FUSION_INC_FUSIONDEQUELINKAGE_H_INCLUDED_)
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#define _FUSION_INC_FUSIONDEQUELINKAGE_H_INCLUDED_
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#pragma once
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#include "fusiontrace.h"
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class CDequeBase;
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class CDequeLinkage : protected LIST_ENTRY
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{
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friend CDequeBase;
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public:
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inline CDequeLinkage() : m_pDeque(NULL), m_ulLockCount(0) { this->Flink = NULL; this->Blink = NULL; }
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inline ~CDequeLinkage() { ASSERT_NTC(m_ulLockCount == 0); m_pDeque = NULL; }
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inline bool IsNotLocked() const { return (m_ulLockCount == 0); }
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inline VOID Lock() { m_ulLockCount++; }
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inline VOID Unlock() { m_ulLockCount--; }
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inline VOID Remove() { this->Flink->Blink = this->Flink; this->Blink->Flink = this->Flink; }
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protected:
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inline VOID InitializeHead(CDequeBase *pDequeBase) { ASSERT_NTC(pDequeBase != NULL); this->Flink = this; this->Blink = this; this->m_pDeque = pDequeBase; }
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inline CDequeLinkage *GetFlink() const { return static_cast<CDequeLinkage *>(this->Flink); }
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inline CDequeLinkage *GetBlink() const { return static_cast<CDequeLinkage *>(this->Blink); }
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inline CDequeBase *GetDequeBase() const { return m_pDeque; }
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inline VOID SetDeque(CDequeBase *pDeque) { m_pDeque = pDeque; }
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inline VOID SetFlink(CDequeLinkage *pFlink) { this->Flink = pFlink; }
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inline VOID SetBlink(CDequeLinkage *pBlink) { this->Blink = pBlink; }
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CDequeBase *m_pDeque;
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// m_ulLockCount is incremented when an iterator is positioned on an entry, to stop
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// it from being deleted. Note that no interlocked synchronization is attempted;
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// this is merely to stop blatent programming errors. If you want multithreaded
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// access to the deque, you need to provide your own synchronization.
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ULONG m_ulLockCount;
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};
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#endif
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