windows-nt/Source/XPSP1/NT/base/efiutil/sdk/inc/link.h

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2020-09-26 03:20:57 -05:00
#ifndef _LINK_H
#define _LINK_H
/*++
Copyright (c) 1998 Intel Corporation
Module Name:
link.h
Abstract:
EFI link list macro's
Revision History
--*/
#ifndef EFI_NT_EMUL
/*
* List entry - doubly linked list
*/
typedef struct _LIST_ENTRY {
struct _LIST_ENTRY *Flink;
struct _LIST_ENTRY *Blink;
} LIST_ENTRY;
#endif
/*
* VOID
* InitializeListHead(
* LIST_ENTRY *ListHead
* );
*/
#define InitializeListHead(ListHead) \
(ListHead)->Flink = ListHead; \
(ListHead)->Blink = ListHead;
/*
* BOOLEAN
* IsListEmpty(
* PLIST_ENTRY ListHead
* );
*/
#define IsListEmpty(ListHead) \
((ListHead)->Flink == (ListHead))
/*
* VOID
* RemoveEntryList(
* PLIST_ENTRY Entry
* );
*/
#define _RemoveEntryList(Entry) { \
LIST_ENTRY *_Blink, *_Flink; \
_Flink = (Entry)->Flink; \
_Blink = (Entry)->Blink; \
_Blink->Flink = _Flink; \
_Flink->Blink = _Blink; \
}
#if EFI_DEBUG
#define RemoveEntryList(Entry) \
_RemoveEntryList(Entry); \
(Entry)->Flink = (LIST_ENTRY *) BAD_POINTER; \
(Entry)->Blink = (LIST_ENTRY *) BAD_POINTER;
#else
#define RemoveEntryList(Entry) \
_RemoveEntryList(Entry);
#endif
/*
* VOID
* InsertTailList(
* PLIST_ENTRY ListHead,
* PLIST_ENTRY Entry
* );
*/
#define InsertTailList(ListHead,Entry) {\
LIST_ENTRY *_ListHead, *_Blink; \
_ListHead = (ListHead); \
_Blink = _ListHead->Blink; \
(Entry)->Flink = _ListHead; \
(Entry)->Blink = _Blink; \
_Blink->Flink = (Entry); \
_ListHead->Blink = (Entry); \
}
/*
* VOID
* InsertHeadList(
* PLIST_ENTRY ListHead,
* PLIST_ENTRY Entry
* );
*/
#define InsertHeadList(ListHead,Entry) {\
LIST_ENTRY *_ListHead, *_Flink; \
_ListHead = (ListHead); \
_Flink = _ListHead->Flink; \
(Entry)->Flink = _Flink; \
(Entry)->Blink = _ListHead; \
_Flink->Blink = (Entry); \
_ListHead->Flink = (Entry); \
}
/*
* EFI_FIELD_OFFSET - returns the byte offset to a field within a structure
*/
#define EFI_FIELD_OFFSET(TYPE,Field) ((UINTN)(&(((TYPE *) 0)->Field)))
/*
* CONTAINING_RECORD - returns a pointer to the structure
* from one of it's elements.
*/
#define _CR(Record, TYPE, Field) \
((TYPE *) ( (CHAR8 *)(Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
#if EFI_DEBUG
#define CR(Record, TYPE, Field, Sig) \
_CR(Record, TYPE, Field)->Signature != Sig ? \
(TYPE *) ASSERT_STRUCT(_CR(Record, TYPE, Field), Record) : \
_CR(Record, TYPE, Field)
#else
#define CR(Record, TYPE, Field, Signature) \
_CR(Record, TYPE, Field)
#endif
/*
* A lock structure
*/
typedef struct _FLOCK {
EFI_TPL Tpl;
EFI_TPL OwnerTpl;
UINTN Lock;
} FLOCK;
#endif