palloc.h

来自「关系型数据库 Postgresql 6.5.2」· C头文件 代码 · 共 42 行

/*-------------------------------------------------------------------------
 *
 * palloc.h
 *	  POSTGRES memory allocator definitions.
 *
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 * $Id: palloc.h,v 1.9 1999/05/25 16:14:56 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef PALLOC_H
#define PALLOC_H

#include "c.h"

#ifdef PALLOC_IS_MALLOC

#define palloc(s)	  malloc(s)
#define pfree(p)	  free(p)
#define repalloc(p,s) realloc((p),(s))

#else							/* ! PALLOC_IS_MALLOC */

/* ----------
 * In the case we use memory contexts, use macro's for palloc() etc.
 * ----------
 */
#include "utils/mcxt.h"

#define palloc(s)	  ((void *)MemoryContextAlloc(CurrentMemoryContext,(Size)(s)))
#define pfree(p)	  MemoryContextFree(CurrentMemoryContext,(Pointer)(p))
#define repalloc(p,s) ((void *)MemoryContextRealloc(CurrentMemoryContext,(Pointer)(p),(Size)(s)))

#endif	 /* PALLOC_IS_MALLOC */

/* like strdup except uses palloc */
extern char *pstrdup(char *pointer);

#endif	 /* PALLOC_H */