windows-nt/Source/XPSP1/NT/printscan/wia/inc/linklist.h
2020-09-26 16:20:57 +08:00

145 lines
2.7 KiB
C

/*++
Copyright (c) 1997 Microsoft Corporation
Module Name:
linklist.h
Abstract:
This file contains the generic doubly-linked list manipulation package
stolen from NT & made digestible by Win95
Author:
Vlad Sadovsky (VladS) 11-Feb-1997
Revision History:
VladS 02-11-97 Extracted from NT SDK headers to use on Win9x
--*/
#ifndef _LINKLIST_H_
#define _LINKLIST_H_
//
// Calculate the address of the base of the structure given its type, and an
// address of a field within the structure.
//
#ifndef CONTAINING_RECORD
#define CONTAINING_RECORD(address, type, field) ((type *)( \
(PCHAR)(address) - \
(PCHAR)(&((type *)0)->field)))
#endif // CONTAINING_RECORD
//
// Doubly-linked list manipulation routines. Implemented as macros
// but logically these are procedures.
//
//
// VOID
// InitializeListHead(
// PLIST_ENTRY ListHead
// );
//
#define InitializeListHead(ListHead) (\
(ListHead)->Flink = (ListHead)->Blink = (ListHead))
//
// BOOLEAN
// IsListEmpty(
// PLIST_ENTRY ListHead
// );
//
#define IsListEmpty(ListHead) \
((ListHead)->Flink == (ListHead))
//
// PLIST_ENTRY
// RemoveHeadList(
// PLIST_ENTRY ListHead
// );
//
#define RemoveHeadList(ListHead) \
(ListHead)->Flink;\
{RemoveEntryList((ListHead)->Flink)}
//
// PLIST_ENTRY
// RemoveTailList(
// PLIST_ENTRY ListHead
// );
//
#define RemoveTailList(ListHead) \
(ListHead)->Blink;\
{RemoveEntryList((ListHead)->Blink)}
//
// VOID
// RemoveEntryList(
// PLIST_ENTRY Entry
// );
//
#define RemoveEntryList(Entry) {\
PLIST_ENTRY _EX_Blink;\
PLIST_ENTRY _EX_Flink;\
_EX_Flink = (Entry)->Flink;\
_EX_Blink = (Entry)->Blink;\
_EX_Blink->Flink = _EX_Flink;\
_EX_Flink->Blink = _EX_Blink;\
}
//
// VOID
// InsertTailList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertTailList(ListHead,Entry) {\
PLIST_ENTRY _EX_Blink;\
PLIST_ENTRY _EX_ListHead;\
_EX_ListHead = (ListHead);\
_EX_Blink = _EX_ListHead->Blink;\
(Entry)->Flink = _EX_ListHead;\
(Entry)->Blink = _EX_Blink;\
_EX_Blink->Flink = (Entry);\
_EX_ListHead->Blink = (Entry);\
}
//
// VOID
// InsertHeadList(
// PLIST_ENTRY ListHead,
// PLIST_ENTRY Entry
// );
//
#define InsertHeadList(ListHead,Entry) {\
PLIST_ENTRY _EX_Flink;\
PLIST_ENTRY _EX_ListHead;\
_EX_ListHead = (ListHead);\
_EX_Flink = _EX_ListHead->Flink;\
(Entry)->Flink = _EX_Flink;\
(Entry)->Blink = _EX_ListHead;\
_EX_Flink->Blink = (Entry);\
_EX_ListHead->Flink = (Entry);\
}
#endif // _LINKLIST_H_