First phase of memory management rewrite (see backend/utils/mmgr/README

for details).  It doesn't really do that much yet, since there are no
short-term memory contexts in the executor, but the infrastructure is
in place and long-term contexts are handled reasonably.  A few long-
standing bugs have been fixed, such as 'VACUUM; anything' in a single
query string crashing.  Also, out-of-memory is now considered a
recoverable ERROR, not FATAL.
Eliminate a large amount of crufty, now-dead code in and around
memory management.
Fix problem with holding off SIGTRAP, SIGSEGV, etc in postmaster and
backend startup.

1 files changed, 0 insertions, 145 deletions

diff --git a/src/backend/lib/fstack.c b/src/backend/lib/fstack.c
deleted file mode 100644
index 2724962013..0000000000
--- a/src/backend/lib/fstack.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * fstack.c
- *	  Fixed format stack definitions.
- *
- * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- *	  $Header$
- *
- *-------------------------------------------------------------------------
- */
-
-#include "postgres.h"
-#include "lib/fstack.h"
-
-/*
- * Internal function definitions
- */
-
-/*
- * FixedItemIsValid
- *		True iff item is valid.
- */
-#define FixedItemIsValid(item)	PointerIsValid(item)
-
-/*
- * FixedStackGetItemBase
- *		Returns base of enclosing structure.
- */
-#define FixedStackGetItemBase(stack, item) \
-		((Pointer)((char *)(item) - (stack)->offset))
-
-/*
- * FixedStackGetItem
- *		Returns item of given pointer to enclosing structure.
- */
-#define FixedStackGetItem(stack, pointer) \
-		((FixedItem)((char *)(pointer) + (stack)->offset))
-
-#define FixedStackIsValid(stack) ((bool)PointerIsValid(stack))
-
-/*
- * External functions
- */
-
-void
-FixedStackInit(FixedStack stack, Offset offset)
-{
-	AssertArg(PointerIsValid(stack));
-
-	stack->top = NULL;
-	stack->offset = offset;
-}
-
-Pointer
-FixedStackPop(FixedStack stack)
-{
-	Pointer		pointer;
-
-	AssertArg(FixedStackIsValid(stack));
-
-	if (!PointerIsValid(stack->top))
-		return NULL;
-
-	pointer = FixedStackGetItemBase(stack, stack->top);
-	stack->top = stack->top->next;
-
-	return pointer;
-}
-
-void
-FixedStackPush(FixedStack stack, Pointer pointer)
-{
-	FixedItem	item = FixedStackGetItem(stack, pointer);
-
-	AssertArg(FixedStackIsValid(stack));
-	AssertArg(PointerIsValid(pointer));
-
-	item->next = stack->top;
-	stack->top = item;
-}
-
-#ifdef USE_ASSERT_CHECKING
-/*
- * FixedStackContains
- *		True iff ordered stack contains given element.
- *
- * Note:
- *		This is inefficient.  It is intended for debugging use only.
- *
- * Exceptions:
- *		BadArg if stack is invalid.
- *		BadArg if pointer is invalid.
- */
-static bool
-FixedStackContains(FixedStack stack, Pointer pointer)
-{
-	FixedItem	next;
-	FixedItem	item;
-
-	AssertArg(FixedStackIsValid(stack));
-	AssertArg(PointerIsValid(pointer));
-
-	item = FixedStackGetItem(stack, pointer);
-
-	for (next = stack->top; FixedItemIsValid(next); next = next->next)
-	{
-		if (next == item)
-			return true;
-	}
-	return false;
-}
-
-#endif
-
-Pointer
-FixedStackGetTop(FixedStack stack)
-{
-	AssertArg(FixedStackIsValid(stack));
-
-	if (!PointerIsValid(stack->top))
-		return NULL;
-
-	return FixedStackGetItemBase(stack, stack->top);
-}
-
-Pointer
-FixedStackGetNext(FixedStack stack, Pointer pointer)
-{
-	FixedItem	item;
-
-	/* AssertArg(FixedStackIsValid(stack)); */
-	/* AssertArg(PointerIsValid(pointer)); */
-	AssertArg(FixedStackContains(stack, pointer));
-
-	item = FixedStackGetItem(stack, pointer)->next;
-
-	if (!PointerIsValid(item))
-		return NULL;
-
-	return FixedStackGetItemBase(stack, item);
-}