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Diffstat (limited to 'src/backend/lib/fstack.h')
-rw-r--r-- | src/backend/lib/fstack.h | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/src/backend/lib/fstack.h b/src/backend/lib/fstack.h deleted file mode 100644 index b0b1df00d83..00000000000 --- a/src/backend/lib/fstack.h +++ /dev/null @@ -1,113 +0,0 @@ -/*------------------------------------------------------------------------- - * - * fstack.h-- - * Fixed format stack definitions. - * - * - * Copyright (c) 1994, Regents of the University of California - * - * $Id: fstack.h,v 1.1.1.1 1996/07/09 06:21:29 scrappy Exp $ - * - *------------------------------------------------------------------------- - */ -/* - * Note: - * Fixed format stacks assist in the construction of FIFO stacks of - * fixed format structures. Structures which are to be stackable - * should contain a FixedItemData component. A stack is initilized - * with the offset of the FixedItemData component of the structure - * it will hold. By doing so, push and pop operations are simplified - * for the callers. All references to stackable items are pointers - * to the base of the structure instead of pointers to the - * FixedItemData component. - * - */ -#ifndef FSTACK_H -#define FSTACK_H - -#include "c.h" - -/* - * FixedItem -- - * Fixed format stackable item chain component. - * - * Note: - * Structures must contain one FixedItemData component per stack in - * which it will be an item. - */ -typedef struct FixedItemData FixedItemData; -typedef FixedItemData *FixedItem; - -struct FixedItemData { - FixedItem next; /* next item or NULL */ -}; - -/* - * FixedStack -- - * Fixed format stack. - */ -typedef struct FixedStackData { - FixedItem top; /* Top item on the stack or NULL */ - Offset offset; /* Offset from struct base to item */ - /* this could be signed short int! */ -} FixedStackData; - -typedef FixedStackData *FixedStack; - -/* - * FixedStackInit -- - * Iniitializes stack for structures with given fixed component offset. - * - * Exceptions: - * BadArg if stack is invalid pointer. - */ -extern void FixedStackInit(FixedStack stack, Offset offset); - -/* - * FixedStackPop -- - * Returns pointer to top structure on stack or NULL if empty stack. - * - * Exceptions: - * BadArg if stack is invalid. - */ -Pointer FixedStackPop(FixedStack stack); - -/* - * FixedStackPush -- - * Places structure associated with pointer onto top of stack. - * - * Exceptions: - * BadArg if stack is invalid. - * BadArg if pointer is invalid. - */ -extern void FixedStackPush(FixedStack stack, Pointer pointer); - -/* - * FixedStackGetTop -- - * Returns pointer to top structure of a stack. This item is not poped. - * - * Note: - * This is not part of the normal stack interface. It is intended for - * debugging use only. - * - * Exceptions: - * BadArg if stack is invalid. - */ -extern Pointer FixedStackGetTop(FixedStack stack); - -/* - * FixedStackGetNext -- - * Returns pointer to next structure after pointer of a stack. - * - * Note: - * This is not part of the normal stack interface. It is intended for - * debugging use only. - * - * Exceptions: - * BadArg if stack is invalid. - * BadArg if pointer is invalid. - * BadArg if stack does not contain pointer. - */ -extern Pointer FixedStackGetNext(FixedStack stack, Pointer pointer); - -#endif /* FSTACK_H */ |