619 lines
16 KiB
C
619 lines
16 KiB
C
/* $NetBSD: rf_freelist.h,v 1.7 2002/10/11 02:15:57 oster Exp $ */
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/*
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* rf_freelist.h
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*/
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Jim Zelenka
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* rf_freelist.h -- code to manage counted freelists
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*
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* Keep an arena of fixed-size objects. When a new object is needed,
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* allocate it as necessary. When an object is freed, either put it
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* in the arena, or really free it, depending on the maximum arena
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* size.
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*/
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#ifndef _RF__RF_FREELIST_H_
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#define _RF__RF_FREELIST_H_
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#include <dev/raidframe/raidframevar.h>
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#include "rf_debugMem.h"
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#include "rf_general.h"
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#include "rf_threadstuff.h"
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#define RF_FREELIST_STATS 0
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#if RF_FREELIST_STATS > 0
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typedef struct RF_FreeListStats_s {
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char *file;
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int line;
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int allocations;
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int frees;
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int max_free;
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int grows;
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int outstanding;
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int max_outstanding;
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} RF_FreeListStats_t;
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#define RF_FREELIST_STAT_INIT(_fl_) { \
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memset((char *)&((_fl_)->stats), 0, sizeof(RF_FreeListStats_t)); \
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(_fl_)->stats.file = __FILE__; \
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(_fl_)->stats.line = __LINE__; \
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}
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#define RF_FREELIST_STAT_ALLOC(_fl_) { \
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(_fl_)->stats.allocations++; \
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(_fl_)->stats.outstanding++; \
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if ((_fl_)->stats.outstanding > (_fl_)->stats.max_outstanding) \
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(_fl_)->stats.max_outstanding = (_fl_)->stats.outstanding; \
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}
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#define RF_FREELIST_STAT_FREE_UPDATE(_fl_) { \
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if ((_fl_)->free_cnt > (_fl_)->stats.max_free) \
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(_fl_)->stats.max_free = (_fl_)->free_cnt; \
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}
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#define RF_FREELIST_STAT_FREE(_fl_) { \
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(_fl_)->stats.frees++; \
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(_fl_)->stats.outstanding--; \
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RF_FREELIST_STAT_FREE_UPDATE(_fl_); \
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}
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#define RF_FREELIST_STAT_GROW(_fl_) { \
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(_fl_)->stats.grows++; \
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RF_FREELIST_STAT_FREE_UPDATE(_fl_); \
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}
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#define RF_FREELIST_STAT_REPORT(_fl_) { \
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printf("Freelist at %s %d (%s)\n", (_fl_)->stats.file, (_fl_)->stats.line, RF_STRING(_fl_)); \
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printf(" %d allocations, %d frees\n", (_fl_)->stats.allocations, (_fl_)->stats.frees); \
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printf(" %d grows\n", (_fl_)->stats.grows); \
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printf(" %d outstanding\n", (_fl_)->stats.outstanding); \
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printf(" %d free (max)\n", (_fl_)->stats.max_free); \
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printf(" %d outstanding (max)\n", (_fl_)->stats.max_outstanding); \
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}
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#else /* RF_FREELIST_STATS > 0 */
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#define RF_FREELIST_STAT_INIT(_fl_)
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#define RF_FREELIST_STAT_ALLOC(_fl_)
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#define RF_FREELIST_STAT_FREE_UPDATE(_fl_)
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#define RF_FREELIST_STAT_FREE(_fl_)
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#define RF_FREELIST_STAT_GROW(_fl_)
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#define RF_FREELIST_STAT_REPORT(_fl_)
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#endif /* RF_FREELIST_STATS > 0 */
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struct RF_FreeList_s {
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void *objlist; /* list of free obj */
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int free_cnt; /* how many free obj */
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int max_free_cnt; /* max free arena size */
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int obj_inc; /* how many to allocate at a time */
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int obj_size; /* size of objects */
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RF_DECLARE_MUTEX(lock)
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#if RF_FREELIST_STATS > 0
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RF_FreeListStats_t stats; /* statistics */
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#endif /* RF_FREELIST_STATS > 0 */
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};
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/*
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* fl = freelist
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* maxcnt = max number of items in arena
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* inc = how many to allocate at a time
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* size = size of object
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*/
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#define RF_FREELIST_CREATE(_fl_,_maxcnt_,_inc_,_size_) { \
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int rc; \
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RF_ASSERT((_inc_) > 0); \
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RF_Malloc(_fl_, sizeof(RF_FreeList_t), (RF_FreeList_t *)); \
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(_fl_)->objlist = NULL; \
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(_fl_)->free_cnt = 0; \
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(_fl_)->max_free_cnt = _maxcnt_; \
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(_fl_)->obj_inc = _inc_; \
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(_fl_)->obj_size = _size_; \
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rc = rf_mutex_init(&(_fl_)->lock); \
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if (rc) { \
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RF_Free(_fl_, sizeof(RF_FreeList_t)); \
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_fl_ = NULL; \
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} \
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RF_FREELIST_STAT_INIT(_fl_); \
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}
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/*
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* fl = freelist
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* cnt = number to prime with
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* nextp = name of "next" pointer in obj
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* cast = object cast
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*/
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#define RF_FREELIST_PRIME(_fl_,_cnt_,_nextp_,_cast_) { \
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void *_p; \
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int _i; \
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for(_i=0;_i<(_cnt_);_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_p) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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(_fl_)->free_cnt++; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_FREE_UPDATE(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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#define RF_FREELIST_MUTEX_OF(_fl_) ((_fl_)->lock)
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#define RF_FREELIST_DO_UNLOCK(_fl_) { \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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#define RF_FREELIST_DO_LOCK(_fl_) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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}
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/*
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* fl = freelist
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* cnt = number to prime with
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* nextp = name of "next" pointer in obj
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* cast = object cast
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* init = func to call to init obj
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*/
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#define RF_FREELIST_PRIME_INIT(_fl_,_cnt_,_nextp_,_cast_,_init_) { \
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void *_p; \
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int _i; \
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for(_i=0;_i<(_cnt_);_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_init_ (_cast_ _p)) { \
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RF_Free(_p,(_fl_)->obj_size); \
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_p = NULL; \
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} \
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if (_p) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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(_fl_)->free_cnt++; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_FREE_UPDATE(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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/*
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* fl = freelist
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* cnt = number to prime with
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* nextp = name of "next" pointer in obj
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* cast = object cast
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* init = func to call to init obj
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* arg = arg to init obj func
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*/
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#define RF_FREELIST_PRIME_INIT_ARG(_fl_,_cnt_,_nextp_,_cast_,_init_,_arg_) { \
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void *_p; \
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int _i; \
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for(_i=0;_i<(_cnt_);_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_init_ (_cast_ _p,_arg_)) { \
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RF_Free(_p,(_fl_)->obj_size); \
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_p = NULL; \
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} \
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if (_p) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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(_fl_)->free_cnt++; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_FREE_UPDATE(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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/*
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* fl = freelist
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* obj = object to allocate
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* nextp = name of "next" pointer in obj
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* cast = cast of obj assignment
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* init = init obj func
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*/
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#define RF_FREELIST_GET_INIT(_fl_,_obj_,_nextp_,_cast_,_init_) { \
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void *_p; \
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int _i; \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_ASSERT(sizeof(*(_obj_))==((_fl_)->obj_size)); \
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if (_fl_->objlist) { \
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_obj_ = _cast_((_fl_)->objlist); \
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(_fl_)->objlist = (void *)((_obj_)->_nextp_); \
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(_fl_)->free_cnt--; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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/* \
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* Allocate one at a time so we can free \
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* one at a time without cleverness when arena \
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* is full. \
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*/ \
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RF_Calloc(_obj_,1,(_fl_)->obj_size,_cast_); \
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if (_obj_) { \
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if (_init_ (_obj_)) { \
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RF_Free(_obj_,(_fl_)->obj_size); \
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_obj_ = NULL; \
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} \
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else { \
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for(_i=1;_i<(_fl_)->obj_inc;_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_p) { \
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if (_init_ (_p)) { \
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RF_Free(_p,(_fl_)->obj_size); \
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_p = NULL; \
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break; \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_GROW(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_ALLOC(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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/*
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* fl = freelist
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* obj = object to allocate
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* nextp = name of "next" pointer in obj
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* cast = cast of obj assignment
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* init = init obj func
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*/
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#define RF_FREELIST_GET_INIT_NOUNLOCK(_fl_,_obj_,_nextp_,_cast_,_init_) { \
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void *_p; \
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int _i; \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_ASSERT(sizeof(*(_obj_))==((_fl_)->obj_size)); \
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if (_fl_->objlist) { \
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_obj_ = _cast_((_fl_)->objlist); \
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(_fl_)->objlist = (void *)((_obj_)->_nextp_); \
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(_fl_)->free_cnt--; \
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} \
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else { \
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/* \
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* Allocate one at a time so we can free \
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* one at a time without cleverness when arena \
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* is full. \
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*/ \
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RF_Calloc(_obj_,1,(_fl_)->obj_size,_cast_); \
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if (_obj_) { \
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if (_init_ (_obj_)) { \
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RF_Free(_obj_,(_fl_)->obj_size); \
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_obj_ = NULL; \
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} \
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else { \
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for(_i=1;_i<(_fl_)->obj_inc;_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_p) { \
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if (_init_ (_p)) { \
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RF_Free(_p,(_fl_)->obj_size); \
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_p = NULL; \
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break; \
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} \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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} \
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else { \
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break; \
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} \
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} \
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} \
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} \
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RF_FREELIST_STAT_GROW(_fl_); \
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} \
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RF_FREELIST_STAT_ALLOC(_fl_); \
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}
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/*
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* fl = freelist
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* obj = object to allocate
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* nextp = name of "next" pointer in obj
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* cast = cast of obj assignment
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*/
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#define RF_FREELIST_GET(_fl_,_obj_,_nextp_,_cast_) { \
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void *_p; \
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int _i; \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_ASSERT(sizeof(*(_obj_))==((_fl_)->obj_size)); \
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if (_fl_->objlist) { \
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_obj_ = _cast_((_fl_)->objlist); \
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(_fl_)->objlist = (void *)((_obj_)->_nextp_); \
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(_fl_)->free_cnt--; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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/* \
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* Allocate one at a time so we can free \
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* one at a time without cleverness when arena \
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* is full. \
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*/ \
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RF_Calloc(_obj_,1,(_fl_)->obj_size,_cast_); \
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if (_obj_) { \
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for(_i=1;_i<(_fl_)->obj_inc;_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_p) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_GROW(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_ALLOC(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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}
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/*
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* fl = freelist
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* obj = object to allocate
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* nextp = name of "next" pointer in obj
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* cast = cast of obj assignment
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* num = num objs to return
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*/
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#define RF_FREELIST_GET_N(_fl_,_obj_,_nextp_,_cast_,_num_) { \
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void *_p, *_l, *_f; \
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int _i, _n; \
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_l = _f = NULL; \
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_n = 0; \
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RF_ASSERT(sizeof(*(_obj_))==((_fl_)->obj_size)); \
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for(_n=0;_n<_num_;_n++) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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if (_fl_->objlist) { \
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_obj_ = _cast_((_fl_)->objlist); \
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(_fl_)->objlist = (void *)((_obj_)->_nextp_); \
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(_fl_)->free_cnt--; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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/* \
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* Allocate one at a time so we can free \
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|
* one at a time without cleverness when arena \
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* is full. \
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*/ \
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RF_Calloc(_obj_,1,(_fl_)->obj_size,_cast_); \
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if (_obj_) { \
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for(_i=1;_i<(_fl_)->obj_inc;_i++) { \
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RF_Calloc(_p,1,(_fl_)->obj_size,(void *)); \
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if (_p) { \
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RF_LOCK_MUTEX((_fl_)->lock); \
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(_cast_(_p))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _p; \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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else { \
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break; \
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} \
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} \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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RF_FREELIST_STAT_GROW(_fl_); \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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RF_LOCK_MUTEX((_fl_)->lock); \
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if (_f == NULL) \
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_f = _obj_; \
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if (_obj_) { \
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(_cast_(_obj_))->_nextp_ = _l; \
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_l = _obj_; \
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RF_FREELIST_STAT_ALLOC(_fl_); \
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} \
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else { \
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(_cast_(_f))->_nextp_ = (_fl_)->objlist; \
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(_fl_)->objlist = _l; \
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_n = _num_; \
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} \
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RF_UNLOCK_MUTEX((_fl_)->lock); \
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} \
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}
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/*
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|
* fl = freelist
|
|
* obj = object to free
|
|
* nextp = name of "next" pointer in obj
|
|
*/
|
|
#define RF_FREELIST_FREE(_fl_,_obj_,_nextp_) { \
|
|
RF_LOCK_MUTEX((_fl_)->lock); \
|
|
if ((_fl_)->free_cnt == (_fl_)->max_free_cnt) { \
|
|
RF_Free(_obj_,(_fl_)->obj_size); \
|
|
} \
|
|
else { \
|
|
RF_ASSERT((_fl_)->free_cnt < (_fl_)->max_free_cnt); \
|
|
(_obj_)->_nextp_ = (_fl_)->objlist; \
|
|
(_fl_)->objlist = (void *)(_obj_); \
|
|
(_fl_)->free_cnt++; \
|
|
} \
|
|
RF_FREELIST_STAT_FREE(_fl_); \
|
|
RF_UNLOCK_MUTEX((_fl_)->lock); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* obj = object to free
|
|
* nextp = name of "next" pointer in obj
|
|
* num = num to free (debugging)
|
|
*/
|
|
#define RF_FREELIST_FREE_N(_fl_,_obj_,_nextp_,_cast_,_num_) { \
|
|
void *_no; \
|
|
int _n; \
|
|
_n = 0; \
|
|
RF_LOCK_MUTEX((_fl_)->lock); \
|
|
while(_obj_) { \
|
|
_no = (_cast_(_obj_))->_nextp_; \
|
|
if ((_fl_)->free_cnt == (_fl_)->max_free_cnt) { \
|
|
RF_Free(_obj_,(_fl_)->obj_size); \
|
|
} \
|
|
else { \
|
|
RF_ASSERT((_fl_)->free_cnt < (_fl_)->max_free_cnt); \
|
|
(_obj_)->_nextp_ = (_fl_)->objlist; \
|
|
(_fl_)->objlist = (void *)(_obj_); \
|
|
(_fl_)->free_cnt++; \
|
|
} \
|
|
_n++; \
|
|
_obj_ = _no; \
|
|
RF_FREELIST_STAT_FREE(_fl_); \
|
|
} \
|
|
RF_ASSERT(_n==(_num_)); \
|
|
RF_UNLOCK_MUTEX((_fl_)->lock); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* obj = object to free
|
|
* nextp = name of "next" pointer in obj
|
|
* clean = undo for init
|
|
*/
|
|
#define RF_FREELIST_FREE_CLEAN(_fl_,_obj_,_nextp_,_clean_) { \
|
|
RF_LOCK_MUTEX((_fl_)->lock); \
|
|
if ((_fl_)->free_cnt == (_fl_)->max_free_cnt) { \
|
|
_clean_ (_obj_); \
|
|
RF_Free(_obj_,(_fl_)->obj_size); \
|
|
} \
|
|
else { \
|
|
RF_ASSERT((_fl_)->free_cnt < (_fl_)->max_free_cnt); \
|
|
(_obj_)->_nextp_ = (_fl_)->objlist; \
|
|
(_fl_)->objlist = (void *)(_obj_); \
|
|
(_fl_)->free_cnt++; \
|
|
} \
|
|
RF_FREELIST_STAT_FREE(_fl_); \
|
|
RF_UNLOCK_MUTEX((_fl_)->lock); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* obj = object to free
|
|
* nextp = name of "next" pointer in obj
|
|
* clean = undo for init
|
|
*/
|
|
#define RF_FREELIST_FREE_CLEAN_NOUNLOCK(_fl_,_obj_,_nextp_,_clean_) { \
|
|
RF_LOCK_MUTEX((_fl_)->lock); \
|
|
if ((_fl_)->free_cnt == (_fl_)->max_free_cnt) { \
|
|
_clean_ (_obj_); \
|
|
RF_Free(_obj_,(_fl_)->obj_size); \
|
|
} \
|
|
else { \
|
|
RF_ASSERT((_fl_)->free_cnt < (_fl_)->max_free_cnt); \
|
|
(_obj_)->_nextp_ = (_fl_)->objlist; \
|
|
(_fl_)->objlist = (void *)(_obj_); \
|
|
(_fl_)->free_cnt++; \
|
|
} \
|
|
RF_FREELIST_STAT_FREE(_fl_); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* nextp = name of "next" pointer in obj
|
|
* cast = cast to object type
|
|
*/
|
|
#define RF_FREELIST_DESTROY(_fl_,_nextp_,_cast_) { \
|
|
void *_cur, *_next; \
|
|
RF_FREELIST_STAT_REPORT(_fl_); \
|
|
rf_mutex_destroy(&((_fl_)->lock)); \
|
|
for(_cur=(_fl_)->objlist;_cur;_cur=_next) { \
|
|
_next = (_cast_ _cur)->_nextp_; \
|
|
RF_Free(_cur,(_fl_)->obj_size); \
|
|
} \
|
|
RF_Free(_fl_,sizeof(RF_FreeList_t)); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* nextp = name of "next" pointer in obj
|
|
* cast = cast to object type
|
|
* clean = func to undo obj init
|
|
*/
|
|
#define RF_FREELIST_DESTROY_CLEAN(_fl_,_nextp_,_cast_,_clean_) { \
|
|
void *_cur, *_next; \
|
|
RF_FREELIST_STAT_REPORT(_fl_); \
|
|
rf_mutex_destroy(&((_fl_)->lock)); \
|
|
for(_cur=(_fl_)->objlist;_cur;_cur=_next) { \
|
|
_next = (_cast_ _cur)->_nextp_; \
|
|
_clean_ (_cur); \
|
|
RF_Free(_cur,(_fl_)->obj_size); \
|
|
} \
|
|
RF_Free(_fl_,sizeof(RF_FreeList_t)); \
|
|
}
|
|
|
|
/*
|
|
* fl = freelist
|
|
* nextp = name of "next" pointer in obj
|
|
* cast = cast to object type
|
|
* clean = func to undo obj init
|
|
* arg = arg for undo func
|
|
*/
|
|
#define RF_FREELIST_DESTROY_CLEAN_ARG(_fl_,_nextp_,_cast_,_clean_,_arg_) { \
|
|
void *_cur, *_next; \
|
|
RF_FREELIST_STAT_REPORT(_fl_); \
|
|
rf_mutex_destroy(&((_fl_)->lock)); \
|
|
for(_cur=(_fl_)->objlist;_cur;_cur=_next) { \
|
|
_next = (_cast_ _cur)->_nextp_; \
|
|
_clean_ (_cur,_arg_); \
|
|
RF_Free(_cur,(_fl_)->obj_size); \
|
|
} \
|
|
RF_Free(_fl_,sizeof(RF_FreeList_t)); \
|
|
}
|
|
|
|
#endif /* !_RF__RF_FREELIST_H_ */
|