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version 4.0

    1: /*************************************************************************
    2: * (C) 2012 AITNET ltd - Sofia/Bulgaria - <misho@elwix.org>
    3: *  by Michael Pounov <misho@openbsd-bg.org>
    4: *
    5: * $Author: misho $
    6: * $Id: mem.c,v 1.7 2016/05/18 12:47:42 misho Exp $
    7: *
    8: **************************************************************************
    9: The ELWIX and AITNET software is distributed under the following
   10: terms:
   11: 
   12: All of the documentation and software included in the ELWIX and AITNET
   13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
   14: 
   15: Copyright 2004 - 2016
   16: 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
   17: 
   18: Redistribution and use in source and binary forms, with or without
   19: modification, are permitted provided that the following conditions
   20: are met:
   21: 1. Redistributions of source code must retain the above copyright
   22:    notice, this list of conditions and the following disclaimer.
   23: 2. Redistributions in binary form must reproduce the above copyright
   24:    notice, this list of conditions and the following disclaimer in the
   25:    documentation and/or other materials provided with the distribution.
   26: 3. All advertising materials mentioning features or use of this software
   27:    must display the following acknowledgement:
   28: This product includes software developed by Michael Pounov <misho@elwix.org>
   29: ELWIX - Embedded LightWeight unIX and its contributors.
   30: 4. Neither the name of AITNET nor the names of its contributors
   31:    may be used to endorse or promote products derived from this software
   32:    without specific prior written permission.
   33: 
   34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
   35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   44: SUCH DAMAGE.
   45: */
   46: #include "global.h"
   47: 
   48: 
   49: mpool_t *elwix_mpool;
   50: 
   51: 
   52: /*
   53:  * mpool_init() - Init memory pool
   54:  *
   55:  * @maxmem = If !=0 set maximum memory quota
   56:  * return: =NULL error or !=NULL new allocated pool
   57:  */
   58: mpool_t *
   59: mpool_init(u_long maxmem)
   60: {
   61: 	mpool_t *mp;
   62: 	register int i;
   63: 
   64: 	mp = malloc(sizeof(mpool_t));
   65: 	if (!mp) {
   66: 		LOGERR;
   67: 		return NULL;
   68: 	} else
   69: 		memset(mp, 0, sizeof(mpool_t));
   70: 
   71: 	pthread_mutex_init(&mp->pool_mtx, NULL);
   72: 
   73: 	mp->pool_quota.max = maxmem;
   74: 
   75: 	mpool_lock(mp);
   76: 	for (i = 0; i < MEM_BUCKETS; i++) {
   77: 		TAILQ_INIT(&mp->pool_active[i]);
   78: 		TAILQ_INIT(&mp->pool_inactive[i]);
   79: 	}
   80: 	mpool_unlock(mp);
   81: 
   82: 	return mp;
   83: }
   84: 
   85: /*
   86:  * mpool_destroy() - Destroy memory pool
   87:  *
   88:  * @mp = Memory pool
   89:  * return: none
   90:  */
   91: void
   92: mpool_destroy(mpool_t ** __restrict mp)
   93: {
   94: 	struct tagAlloc *m;
   95: 	register int i;
   96: 
   97: 	if (!mp && !*mp)
   98: 		return;
   99: 
  100: 	mpool_lock(*mp);
  101: 
  102: 	for (i = 0; i < MEM_BUCKETS; i++) {
  103: 		while ((m = TAILQ_FIRST(&(*mp)->pool_active[i]))) {
  104: 			TAILQ_REMOVE(&(*mp)->pool_active[i], m, alloc_node);
  105: 			if (m->alloc_mem)
  106: 				free(m->alloc_mem);
  107: 			free(m);
  108: 		}
  109: 		while ((m = TAILQ_FIRST(&(*mp)->pool_inactive[i]))) {
  110: 			TAILQ_REMOVE(&(*mp)->pool_inactive[i], m, alloc_node);
  111: 			if (m->alloc_mem)
  112: 				free(m->alloc_mem);
  113: 			free(m);
  114: 		}
  115: 	}
  116: 
  117: 	mpool_unlock(*mp);
  118: 	pthread_mutex_destroy(&(*mp)->pool_mtx);
  119: 
  120: 	free(*mp);
  121: 	*mp = NULL;
  122: }
  123: 
  124: /* ----------------------------------------------------------- */
  125: 
  126: static inline long
  127: BucketIndex(u_int size)
  128: {
  129: 	register long b;
  130: 
  131: 	if (!size--)
  132: 		return 0;		/* min bucket position in array */
  133: 
  134: 	for (b = MEM_MIN_BUCKET; b < MEM_MAX_BUCKET; b++)
  135: 		if (!(size >> b))
  136: 			break;
  137: 
  138: 	return b - MEM_MIN_BUCKET;	/* convert to bucket array index */
  139: }
  140: 
  141: static inline struct tagAlloc *
  142: pullInactive(mpool_t * __restrict mp, int idx)
  143: {
  144: 	struct tagAlloc *m = NULL;
  145: 
  146: 	/* must be locked pool before use this function */ 
  147: 	if ((m = TAILQ_FIRST(&mp->pool_inactive[idx]))) {
  148: 		TAILQ_REMOVE(&mp->pool_inactive[idx], m, alloc_node);
  149: 		/* statistics */
  150: 		mp->pool_calls.cache--;
  151: 		mp->pool_bytes.cache -= mem_size(m);
  152: 
  153: 		/* clear name */
  154: 		*m->alloc_name = 0;
  155: 	}
  156: 
  157: 	return m;
  158: }
  159: 
  160: /*
  161:  * mpool_malloc() - Memory allocation
  162:  *
  163:  * @mp = Memory pool
  164:  * @size = Size
  165:  * @memname = Optional memory block name
  166:  * return: NULL error or !=NULL ok allocated memory
  167:  */
  168: void *
  169: mpool_malloc(mpool_t * __restrict mp, u_int size, const char *memname)
  170: {
  171: 	struct tagAlloc *m;
  172: 	int idx;
  173: 	u_int align;
  174: 
  175: 	if (!mp) {
  176: 		elwix_SetErr(EINVAL, "Pool not specified");
  177: 		return NULL;
  178: 	}
  179: 	if (size > MEM_ALLOC_MAX) {
  180: 		elwix_SetErr(ENOMEM, "Memory size is too large");
  181: 		return NULL;
  182: 	} else
  183: 		size = (size + 3) & ~3;	/* must align to 4 because needed room for sentinels */
  184: 
  185: 	idx = BucketIndex(size);
  186: 
  187: 	mpool_lock(mp);
  188: 
  189: 	/* get memory from cache if exists */
  190: 	if (!(m = pullInactive(mp, idx))) {
  191: 		/* quota */
  192: 		if (mp->pool_quota.max && 
  193: 				(mp->pool_quota.curr + size) > mp->pool_quota.max) {
  194: 			elwix_SetErr(ENOMEM, "Max.allocate memory quota has been reached");
  195: 			mpool_unlock(mp);
  196: 			return NULL;
  197: 		}
  198: 
  199: 		m = malloc(sizeof(struct tagAlloc));
  200: 		if (!m) {
  201: 			LOGERR;
  202: 			mpool_unlock(mp);
  203: 			return NULL;
  204: 		} else
  205: 			memset(m, 0, sizeof(struct tagAlloc));
  206: 	}
  207: 
  208: 	if (memname)
  209: 		strlcpy(m->alloc_name, memname, sizeof m->alloc_name);
  210: 
  211: 	if (!m->alloc_mem) {
  212: 		align = 1 << (idx + MEM_MIN_BUCKET);
  213: 		m->alloc_mem = malloc(align + 12);	/* +12 sentinel bytes */
  214: 		if (!m->alloc_mem) {
  215: 			LOGERR;
  216: 			free(m);
  217: 			mpool_unlock(mp);
  218: 			return NULL;
  219: 		} else {	/* quota */
  220: 			mp->pool_quota.curr += size;
  221: 			mp->pool_quota.real += 1 << (idx + MEM_MIN_BUCKET);
  222: 			memset(m->alloc_mem, 0, align + 12);
  223: 		}
  224: 	}
  225: 
  226: 	m->alloc_mem[0] = size / sizeof(u_int);
  227: 	m->alloc_mem[1] = MEM_MAGIC_START;
  228: 	m->alloc_mem[2 + size / sizeof(u_int)] = MEM_MAGIC_STOP;
  229: 	TAILQ_INSERT_HEAD(&mp->pool_active[idx], m, alloc_node);
  230: 	/* statistics */
  231: 	mp->pool_calls.alloc++;
  232: 	mp->pool_bytes.alloc += size;
  233: 
  234: 	mpool_unlock(mp);
  235: 	return mem_data(m, void*);
  236: }
  237: 
  238: /*
  239:  * mpool_realloc() Reallocate memory block with new size
  240:  *
  241:  * @mp = Memory pool
  242:  * @data = Allocated memory data
  243:  * @newsize = New size of memory block
  244:  * @memname = Optional new memory block name
  245:  * return: NULL error or !=NULL new reallocated memory block
  246:  */
  247: void *
  248: mpool_realloc(mpool_t * __restrict mp, void * __restrict data, u_int newsize, const char *memname)
  249: {
  250: 	int idx, oidx;
  251: 	void *p;
  252: 	u_int osize;
  253: 
  254: 	/* if !data execute mpool_malloc() */
  255: 	if (!data)
  256: 		return mpool_malloc(mp, newsize, memname);
  257: 
  258: 	if (!mp) {
  259: 		elwix_SetErr(EINVAL, "Pool not specified");
  260: 		return NULL;
  261: 	}
  262: 	/* check address range & sentinel */
  263: 	if (MEM_BADADDR(data) || MEM_CORRUPT(data)) {
  264: 		elwix_SetErr(EFAULT, "Corrupted memory address");
  265: 		return NULL;
  266: 	}
  267: 	/* prepare new size */
  268: 	if (newsize > MEM_ALLOC_MAX) {
  269: 		elwix_SetErr(ENOMEM, "Memory size is too large");
  270: 		return NULL;
  271: 	}
  272: 
  273: 	mpool_lock(mp);
  274: 
  275: 	osize = ((u_int*)data)[-2] * sizeof(u_int);
  276: 	oidx = BucketIndex(osize);
  277: 	newsize = (newsize + 3) & ~3;	/* must align to 4 because needed room for sentinels */
  278: 	idx = BucketIndex(newsize);
  279: 
  280: 	/* quota */
  281: 	if (mp->pool_quota.max && 
  282: 			(mp->pool_quota.curr + ((u_long) newsize - osize)) > mp->pool_quota.max) {
  283: 		elwix_SetErr(ENOMEM, "Max.allocate memory quota has been reached");
  284: 		mpool_unlock(mp);
  285: 		return NULL;
  286: 	}
  287: 
  288: 	if (oidx != idx) {
  289: 		mpool_unlock(mp);
  290: 		p = mpool_malloc(mp, newsize, memname);
  291: 		if (!p)
  292: 			return NULL;
  293: 
  294: 		memcpy(p, data, MIN(osize, newsize));
  295: 		mpool_free(mp, data, 0);
  296: 	} else {
  297: 		p = data;
  298: 
  299: 		((u_int*) p)[-2] = newsize / sizeof(u_int);
  300: 		((u_int*) p)[newsize / sizeof(u_int)] = MEM_MAGIC_STOP;
  301: 
  302: 		mp->pool_bytes.alloc += (u_long) newsize - osize;
  303: 		mp->pool_quota.curr += (u_long) newsize - osize;
  304: 
  305: 		mpool_unlock(mp);
  306: 	}
  307: 
  308: 	return p;
  309: }
  310: 
  311: /*
  312:  * mpool_purge() - Purge memory block cache and release resources
  313:  *
  314:  * @mp = Memory pool
  315:  * @atmost = Free at most in buckets
  316:  * return: -1 error or 0 ok
  317:  */
  318: int
  319: mpool_purge(mpool_t * __restrict mp, u_int atmost)
  320: {
  321: 	register int i, cx;
  322: 	struct tagAlloc *m, *tmp;
  323: 
  324: 	if (!mp) {
  325: 		elwix_SetErr(EINVAL, "Pool not specified");
  326: 		return -1;
  327: 	}
  328: 
  329: 	mpool_lock(mp);
  330: 
  331: 	for (i = cx = 0; i < MEM_BUCKETS; cx = 0, i++) {
  332: 		TAILQ_FOREACH_SAFE(m, &mp->pool_inactive[i], alloc_node, tmp) {
  333: 			/* barrier for purge */
  334: 			if (cx < atmost) {
  335: 				cx++;
  336: 				continue;
  337: 			}
  338: 
  339: 			TAILQ_REMOVE(&mp->pool_inactive[i], m, alloc_node);
  340: 			/* statistics */
  341: 			mp->pool_calls.cache--;
  342: 			mp->pool_bytes.cache -= mem_size(m);
  343: 
  344: 			mp->pool_calls.free++;
  345: 			mp->pool_bytes.free += mem_size(m);
  346: 			/* quota */
  347: 			mp->pool_quota.curr -= mem_size(m);
  348: 			mp->pool_quota.real -= 1 << (i + MEM_MIN_BUCKET);
  349: 
  350: 			if (m->alloc_mem)
  351: 				free(m->alloc_mem);
  352: 			free(m);
  353: 		}
  354: 	}
  355: 
  356: 	mpool_unlock(mp);
  357: 	return 0;
  358: }
  359: 
  360: /*
  361:  * mpool_free() Free allocated memory with mpool_alloc()
  362:  *
  363:  * @mp = Memory pool
  364:  * @data = Allocated memory data
  365:  * @purge = if !=0 force release memory block
  366:  * return: <0 error or 0 ok released memory block
  367:  */
  368: int
  369: mpool_free(mpool_t * __restrict mp, void * __restrict data, int purge)
  370: {
  371: 	int idx;
  372: 	struct tagAlloc *m, *tmp;
  373: 
  374: 	if (!data)
  375: 		return 0;
  376: 	if (!mp) {
  377: 		elwix_SetErr(EINVAL, "Pool not specified");
  378: 		return -1;
  379: 	}
  380: 	/* check address range & sentinel */
  381: 	assert(!MEM_BADADDR(data) && !MEM_CORRUPT(data));
  382: 	if (MEM_BADADDR(data) || MEM_CORRUPT(data)) {
  383: 		elwix_SetErr(EFAULT, "Corrupted memory address");
  384: 		return -2;
  385: 	} else
  386: 		idx = BucketIndex(((u_int*)data)[-2] * sizeof(u_int));
  387: 
  388: 	mpool_lock(mp);
  389: 	TAILQ_FOREACH_SAFE(m, &mp->pool_active[idx], alloc_node, tmp)
  390: 		if (mem_data(m, void*) == data) {
  391: 			TAILQ_REMOVE(&mp->pool_active[idx], m, alloc_node);
  392: 			/* statistics */
  393: 			mp->pool_calls.alloc--;
  394: 			mp->pool_bytes.alloc -= mem_size(m);
  395: 
  396: 			if (!purge) {
  397: 				TAILQ_INSERT_HEAD(&mp->pool_inactive[idx], m, alloc_node);
  398: 				/* statistics */
  399: 				mp->pool_calls.cache++;
  400: 				mp->pool_bytes.cache += mem_size(m);
  401: 			} else {
  402: 				/* statistics */
  403: 				mp->pool_calls.free++;
  404: 				mp->pool_bytes.free += mem_size(m);
  405: 				/* quota */
  406: 				mp->pool_quota.curr -= mem_size(m);
  407: 				mp->pool_quota.real -= 1 << (idx + MEM_MIN_BUCKET);
  408: 
  409: 				if (m->alloc_mem)
  410: 					free(m->alloc_mem);
  411: 				free(m);
  412: 			}
  413: 			break;
  414: 		}
  415: 	mpool_unlock(mp);
  416: 
  417: 	return 0;
  418: }
  419: 
  420: /*
  421:  * mpool_free2() Free allocated memory with mpool_alloc() by size and memory name
  422:  *
  423:  * @mp = Memory pool
  424:  * @size = Allocated memory data size
  425:  * @memname = Memory name
  426:  * @purge = if !=0 force release memory block
  427:  * return: <0 error or 0 ok released memory block
  428:  */
  429: int
  430: mpool_free2(mpool_t * __restrict mp, u_int size, const char *memname, int purge)
  431: {
  432: 	int idx;
  433: 	struct tagAlloc *m, *tmp;
  434: 
  435: 	if (!mp || !memname) {
  436: 		elwix_SetErr(EINVAL, "Pool or memory name is not specified");
  437: 		return -1;
  438: 	} else
  439: 		idx = BucketIndex(size);
  440: 
  441: 	mpool_lock(mp);
  442: 	TAILQ_FOREACH_SAFE(m, &mp->pool_active[idx], alloc_node, tmp)
  443: 		if (!strcmp(m->alloc_name, memname)) {
  444: 			TAILQ_REMOVE(&mp->pool_active[idx], m, alloc_node);
  445: 			/* statistics */
  446: 			mp->pool_calls.alloc--;
  447: 			mp->pool_bytes.alloc -= mem_size(m);
  448: 
  449: 			if (!purge) {
  450: 				TAILQ_INSERT_HEAD(&mp->pool_inactive[idx], m, alloc_node);
  451: 				/* statistics */
  452: 				mp->pool_calls.cache++;
  453: 				mp->pool_bytes.cache += mem_size(m);
  454: 			} else {
  455: 				/* statistics */
  456: 				mp->pool_calls.free++;
  457: 				mp->pool_bytes.free += mem_size(m);
  458: 				/* quota */
  459: 				mp->pool_quota.curr -= mem_size(m);
  460: 				mp->pool_quota.real -= 1 << (idx + MEM_MIN_BUCKET);
  461: 
  462: 				if (m->alloc_mem)
  463: 					free(m->alloc_mem);
  464: 				free(m);
  465: 			}
  466: 			break;
  467: 		}
  468: 	mpool_unlock(mp);
  469: 
  470: 	return 0;
  471: }
  472: 
  473: /*
  474:  * mpool_strdup() - String duplicate
  475:  *
  476:  * @mp = Memory pool
  477:  * @str = String
  478:  * @memname = Memory name
  479:  * return: NULL error or !=NULL new string
  480:  */
  481: char *
  482: mpool_strdup(mpool_t * __restrict mp, const char *str, const char *memname)
  483: {
  484: 	char *s = NULL;
  485: 	u_int len;
  486: 
  487: 	if (!mp) {
  488: 		elwix_SetErr(EINVAL, "Pool not specified");
  489: 		return NULL;
  490: 	}
  491: 	if (!str) {
  492: 		elwix_SetErr(EINVAL, "String is NULL");
  493: 		return NULL;
  494: 	} else
  495: 		len = strlen(str) + 1;
  496: 
  497: 	s = mpool_malloc(mp, len, memname);
  498: 	if (!s)
  499: 		return NULL;
  500: 	else
  501: 		memcpy(s, str, len);
  502: 
  503: 	return s;
  504: }
  505: 
  506: /*
  507:  * mpool_getmembynam() Find allocated memory block by size and memory name
  508:  *
  509:  * @mp = Memory pool
  510:  * @size = Memory size
  511:  * @memname = Memory name
  512:  * return: NULL error or not found and !=NULL allocated memory 
  513:  */
  514: struct tagAlloc *
  515: mpool_getmembynam(mpool_t * __restrict mp, u_int size, const char *memname)
  516: {
  517: 	int idx;
  518: 	struct tagAlloc *m = NULL;
  519: 
  520: 	if (!mp || !memname)
  521: 		return NULL;
  522: 
  523: 	idx = BucketIndex(size);
  524: 	TAILQ_FOREACH(m, &mp->pool_active[idx], alloc_node)
  525: 		if (!strcmp(m->alloc_name, memname))
  526: 			break;
  527: 
  528: 	return mem_data(m, void*);
  529: }
  530: 
  531: /*
  532:  * mpool_getsizebyaddr() - Get size of allocated memory block by address
  533:  *
  534:  * @addr = allocated memory from mpool_malloc()
  535:  * return: usable size of allocated memory block
  536:  */
  537: u_int
  538: mpool_getsizebyaddr(void * __restrict data)
  539: {
  540: 	if (mpool_chkaddr(data))
  541: 		return 0;
  542: 
  543: 	return (((u_int*) data)[-2] * sizeof(u_int));
  544: }
  545: 
  546: /*
  547:  * mpool_chkaddr() - Check validity of given address
  548:  *
  549:  * @data = allocated memory from mpool_malloc()
  550:  * return: -1 bad address, 1 corrupted address or 0 ok
  551:  */
  552: int
  553: mpool_chkaddr(void * __restrict data)
  554: {
  555: 	/* check address range */
  556: 	if (MEM_BADADDR(data))
  557: 		return -1;
  558: 	/* check sentinel */
  559: 	if (MEM_CORRUPT(data))
  560: 		return 1;
  561: 	/* data address is ok! */
  562: 	return 0;
  563: }
  564: 
  565: /*
  566:  * mpool_setquota() - Change maximum memory quota
  567:  *
  568:  * @mp = Memory pool
  569:  * @maxmem = New max quota size
  570:  * return: old maximum memory quota size
  571:  */
  572: u_long
  573: mpool_setquota(mpool_t * __restrict mp, u_long maxmem)
  574: {
  575: 	u_long ret;
  576: 
  577: 	if (!mp)
  578: 		return 0;
  579: 
  580: 	ret = mp->pool_quota.max;
  581: 	mp->pool_quota.max = maxmem;
  582: 
  583: 	/* if new max quota is less then current allocated memory, 
  584: 	 * 	try to purge memory cache blocks
  585: 	 */
  586: 	if (mp->pool_quota.max < mp->pool_quota.curr)
  587: 		mpool_purge(mp, 0);
  588: 
  589: 	return ret;
  590: }
  591: 
  592: /*
  593:  * mpool_getquota() - Get memory quota
  594:  *
  595:  * @mp = Memory pool
  596:  * @currmem = Return current memory usage
  597:  * @realmem = Return current real memory usage
  598:  * @maxmem = Return max quota size
  599:  * return: none
  600:  */
  601: void
  602: mpool_getquota(mpool_t * __restrict mp, u_long *currmem, u_long *realmem, u_long *maxmem)
  603: {
  604: 	if (!mp)
  605: 		return;
  606: 
  607: 	if (maxmem)
  608: 		*maxmem = mp->pool_quota.max;
  609: 	if (realmem)
  610: 		*realmem = mp->pool_quota.real;
  611: 	if (currmem)
  612: 		*currmem = mp->pool_quota.curr;
  613: }
  614: 
  615: /* ----------------------------------------------------------- */
  616: 
  617: /*
  618:  * mpool_statistics() - Dump statistics from memory pool buckets
  619:  *
  620:  * @mp = Memory pool
  621:  * @cb = Export statistics to callback
  622:  * return: none
  623:  */
  624: void
  625: mpool_statistics(mpool_t * __restrict mp, mpool_stat_cb cb)
  626: {
  627: 	struct tagAlloc *m;
  628: 	register int i, act, inact;
  629: 
  630: 	if (!mp || !cb)
  631: 		return;
  632: 
  633: 	for (i = act = inact = 0; i < MEM_BUCKETS; act = inact = 0, i++) {
  634: 		TAILQ_FOREACH(m, &mp->pool_active[i], alloc_node)
  635: 			act++;
  636: 		TAILQ_FOREACH(m, &mp->pool_inactive[i], alloc_node)
  637: 			inact++;
  638: 
  639: 		cb(1 << (i + MEM_MIN_BUCKET), act, inact);
  640: 	}
  641: }
  642: 
  643: /* ----------------------------------------------------------- */
  644: 
  645: /*
  646:  * mpool_xmalloc() - malloc wrapper
  647:  *
  648:  * @size = Size
  649:  * return: NULL error or !=NULL ok allocated memory
  650:  */
  651: void *
  652: mpool_xmalloc(size_t size)
  653: {
  654: 	return mpool_malloc(elwix_mpool, size, elwix_Prog);
  655: }
  656: 
  657: /*
  658:  * mpool_xcalloc() - calloc wrapper
  659:  *
  660:  * @num = number of elements
  661:  * @size = Size of element
  662:  * return: NULL error or !=NULL ok allocated memory
  663:  */
  664: void *
  665: mpool_xcalloc(size_t num, size_t size)
  666: {
  667: 	return mpool_malloc(elwix_mpool, num * size, elwix_Prog);
  668: }
  669: 
  670: /*
  671:  * mpool_xrealloc() - realloc wrapper
  672:  *
  673:  * @data = Allocated memory data
  674:  * @newsize = New size of memory block
  675:  * return: NULL error or !=NULL new reallocated memory block
  676:  */
  677: void *
  678: mpool_xrealloc(void * __restrict data, size_t newsize)
  679: {
  680: 	return mpool_realloc(elwix_mpool, data, newsize, elwix_Prog);
  681: }
  682: 
  683: /*
  684:  * mpool_xfree() - free wrapper
  685:  *
  686:  * @data = Allocated memory data
  687:  * return: none
  688:  */
  689: void
  690: mpool_xfree(void * __restrict data)
  691: {
  692: 	mpool_free(elwix_mpool, data, 0);
  693: }
  694: 
  695: /*
  696:  * mpool_xstrdup() - strdup wrapper
  697:  *
  698:  * @str = string
  699:  * return: =NULL error or !=NULL new allocated string
  700:  */
  701: char *
  702: mpool_xstrdup(const char *str)
  703: {
  704: 	return mpool_strdup(elwix_mpool, str, elwix_Prog);
  705: }
  706: 
  707: /*
  708:  * mpool_xstatistics() - elwix memory pool statistics wrapper
  709:  *
  710:  * @cb = Export statistics to callback
  711:  * return: none
  712:  */
  713: void
  714: mpool_xstatistics(mpool_stat_cb cb)
  715: {
  716: 	mpool_statistics(elwix_mpool, cb);
  717: }
  718: 
  719: static void
  720: xdump_show(u_int size, u_int act, u_int inact)
  721: {
  722: 	if (!act && !inact)
  723: 		return;	/* skip empty bucket */
  724: 
  725: 	if (size < 1024)
  726: 		printf("\t\t* BUCKET %uB size, %u active, %u inactive\n", 
  727: 				size, act, inact);
  728: 	else if (size < 1048576)
  729: 		printf("\t\t* BUCKET %uKB size, %u active, %u inactive\n", 
  730: 				size / 1024, act, inact);
  731: 	else
  732: 		printf("\t\t* BUCKET %uMB size, %u active, %u inactive\n", 
  733: 				size / 1048576, act, inact);
  734: }
  735: 
  736: /*
  737:  * mpool_dump() - Dump elwix memory pool statistics
  738:  *
  739:  * @mp = memory pool, if =NULL dump elwix default memory pool
  740:  * @fmt = prefix info format string
  741:  * @... = argument(s)
  742:  * return: none
  743:  */
  744: void
  745: mpool_dump(mpool_t * __restrict mp, const char *fmt, ...)
  746: {
  747: 	va_list lst;
  748: 	mpool_t *p = mp ? mp : elwix_mpool;
  749: 
  750: 	if (fmt) {
  751: 		va_start(lst, fmt);
  752: 		vprintf(fmt, lst);
  753: 		va_end(lst);
  754: 	} else
  755: 		printf("\n%s(%d)\n", __func__, __LINE__);
  756: 
  757: 	printf("------------------------------------------------------------\n");
  758: 	printf( " ELWIX memory pool ::\n"
  759: 		"\t- quotas Current/Real/Max = %lu/%lu/%lu\n"
  760: 		"\t- calls Alloc/Free/Cache = %lu/%lu/%lu\n"
  761: 		"\t- bytes Alloc/Free/Cache = %lu/%lu/%lu\n"
  762: 		"\t- buckets :\n", 
  763: 		p->pool_quota.curr, p->pool_quota.real, p->pool_quota.max, 
  764: 		p->pool_calls.alloc, p->pool_calls.free, p->pool_calls.cache, 
  765: 		p->pool_bytes.alloc, p->pool_bytes.free, p->pool_bytes.cache);
  766: 
  767: 	mpool_statistics(p, xdump_show);
  768: 	printf("------------------------------------------------------------\n");
  769: }
  770: