92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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intrlckd.h
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Abstract:
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This module defines the routines that should have been in the EX package.
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This manipulates inter-locked operations on flags and such.
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Author:
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Jameel Hyder (microsoft!jameelh)
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Revision History:
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5 Sep 1992 Initial Version
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Notes: Tab stop: 4
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--*/
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#ifndef _INTRLCKD_
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#define _INTRLCKD_
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extern
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VOID FASTCALL
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AfpInterlockedSetDword(
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IN PDWORD pSrc,
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IN DWORD Mask,
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IN PAFP_SPIN_LOCK pSpinLock
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);
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extern
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VOID FASTCALL
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AfpInterlockedClearDword(
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IN PDWORD pSrc,
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IN DWORD Mask,
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IN PAFP_SPIN_LOCK pSpinLock
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);
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extern
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VOID FASTCALL
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AfpInterlockedSetNClearDword(
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IN PDWORD pSrc,
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IN DWORD SetMask,
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IN DWORD ClrMask,
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IN PAFP_SPIN_LOCK pSpinLock
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);
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// Macros for Interlocked/ExInterlocked calls
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//
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// For future reference, here is the difference between all the different
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// kernel mode interlocked routines:
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//
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// InterlockedIncrement/Decrement - fastest on all platforms, inlined
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// where appropriate to avoid call overhead. No spinlock required, usable
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// on paged data. Operation is atomic ONLY with respect to other Interlocked
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// calls.
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//
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// ExInterlockedIncrement/Decrement - not as efficient, requires a function
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// call and a spinlock. Operation is atomic ONLY with respect to other
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// ExInterlockedIncrement/Decrement calls. There is no reason to use this
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// instead of InterlockedIncrement/Decrement. Does not actually acquire the
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// spinlock. Required for backwards compatibility.
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//
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// ExInterlockedAddUlong - most inefficient, requires a function call and a
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// spinlock. Spinlock is actually acquired, so the operation is atomic with
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// respect to anything that acquires the same spinlock.
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//
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#define INTERLOCKED_INCREMENT_LONG(p) InterlockedIncrement(p)
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#define INTERLOCKED_DECREMENT_LONG(p) InterlockedDecrement(p)
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#define INTERLOCKED_ADD_STATISTICS(p, v, l) ExInterlockedAddLargeStatistic(p, v)
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#define INTERLOCKED_INCREMENT_LONG_DPC(p,l) InterlockedIncrement(p)
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#define INTERLOCKED_DECREMENT_LONG_DPC(p,l) InterlockedDecrement(p)
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#ifdef NT40
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#define INTERLOCKED_ADD_ULONG(p, v, l) ExInterlockedExchangeAdd(p, v)
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#else
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#define INTERLOCKED_ADD_ULONG(p, v, l) ExInterlockedAddUlong(p, v, &(l)->SpinLock)
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#endif
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#define INTERLOCKED_ADD_ULONG_DPC(p, v, l) ExInterlockedAddUlong(p, v, l)
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#define INTERLOCKED_ADD_LARGE_INTGR(p, v, l) ExInterlockedAddLargeInteger(p, v, &(l)->SpinLock)
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#define INTERLOCKED_ADD_LARGE_INTGR_DPC(p, v, l) ExInterlockedAddLargeInteger(p, v, &(l)->SpinLock)
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#endif // _INTRLCKD_
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