X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/mparena.h

diff --git a/mparena.h b/mparena.h
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--- a/mparena.h
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-/* -*-c-*-
- *
- * $Id: mparena.h,v 1.4 2004/04/08 01:36:15 mdw Exp $
- *
- * Allocation and freeing of MP buffers
- *
- * (c) 1999 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#ifndef CATACOMB_MPARENA_H
-#define CATACOMB_MPARENA_H
-
-#ifdef __cplusplus
-  extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <mLib/arena.h>
-
-#ifndef CATACOMB_MPW_H
-#  include "mpw.h"
-#endif
-
-/*----- Data structures ---------------------------------------------------*/
-
-/* --- @mparena_node@ --- *
- *
- * For internal use by the MP arena manager.  The free blocks are held in a
- * binary tree by size, held in the first digit of each vector.
- */
-
-typedef struct mparena_node {
-  struct mparena_node *left, *right;
-  mpw *v;
-} mparena_node;
-
-/* --- @mparena@ --- *
- *
- * The actual arena.
- */
-
-typedef struct mparena {
-  mparena_node *root;
-  unsigned n;
-  arena *a;
-} mparena;
-
-/*----- Standard arenas ---------------------------------------------------*/
-
-extern mparena mparena_global;
-#define MPARENA_GLOBAL (&mparena_global)
-
-extern mparena mparena_secure;
-#define MPARENA_SECURE (&mparena_secure)
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @mparena_create@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to arena block
- *
- * Returns:	---
- *
- * Use:		Initializes an MP arena so that blocks can be allocated from
- *		it.
- */
-
-extern void mparena_create(mparena */*a*/);
-
-#define MPARENA_INIT { 0, 0, &arena_stdlib }
-
-/* --- @mparena_setarena@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to MP arena block
- *		@arena *aa@ = pointer to arena
- *
- * Returns:	---
- *
- * Use:		Sets the underlying arena for an MP arena.
- */
-
-extern void mparena_setarena(mparena */*a*/, arena */*aa*/);
-
-/* --- @mparena_destroy@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to arena block
- *
- * Returns:	---
- *
- * Use:		Frees an MP arena, and all the vectors held within it.  The
- *		blocks which are currently allocated can be freed into some
- *		other MP arena, as long as the underlying arenas are the
- *		same.
- */
-
-extern void mparena_destroy(mparena */*a*/);
-
-/* --- @mparena_count@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to arena block
- *
- * Returns:	Number of allocated blocks from this arena.
- *
- * Use:		Reports the number of blocks allocated from the arena and not
- *		yet freed.
- */
-
-extern unsigned mparena_count(mparena */*a*/);
-
-/* --- @mpalloc@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to arena block
- *		@size_t sz@ = number of digits required
- *
- * Returns:	Pointer to a suitably sized block.
- *
- * Use:		Allocates a lump of data suitable for use as an array of MP
- *		digits.
- */
-
-extern mpw *mpalloc(mparena */*a*/, size_t /*sz*/);
-
-/* --- @mpfree@ --- *
- *
- * Arguments:	@mparena *a@ = pointer to arena block
- *		@mpw *v@ = pointer to allocated vector
- *
- * Returns:	---
- *
- * Use:		Returns an MP vector to an arena.
- */
-
-extern void mpfree(mparena */*a*/, mpw */*v*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
-  }
-#endif
-
-#endif