Annotation of libelwix/src/elwix.c, revision 1.1
1.1 ! misho 1: /*************************************************************************
! 2: * (C) 2013 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
! 3: * by Michael Pounov <misho@elwix.org>
! 4: *
! 5: * $Author: misho $
! 6: * $Id: aitio.c,v 1.13 2012/11/15 23:23:54 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
! 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: int elwix_Debug;
! 50: int elwix_Verbose;
! 51:
! 52:
! 53: /* Memory management */
! 54:
! 55: void *(*e_malloc)(size_t) = malloc;
! 56: void *(*e_calloc)(size_t, size_t) = calloc;
! 57: void *(*e_realloc)(void*, size_t) = realloc;
! 58: char *(*e_strdup)(const char*) = strdup;
! 59: void (*e_free)(void*) = free;
! 60:
! 61:
! 62: #pragma GCC visibility push(hidden)
! 63:
! 64: int use_mm;
! 65: const char elwix_Prog[STRSIZ];
! 66:
! 67: int elwix_Errno;
! 68: char elwix_Error[STRSIZ];
! 69:
! 70: #pragma GCC visibility pop
! 71:
! 72:
! 73: // elwix_SetProg() Set program memory pool name
! 74: inline void
! 75: elwix_SetProg(const char *csProgName)
! 76: {
! 77: strlcpy((char*) elwix_Prog, csProgName, sizeof elwix_Prog);
! 78: }
! 79:
! 80: // elwix_GetProg() Get program memory pool name
! 81: inline const char *
! 82: elwix_GetProg()
! 83: {
! 84: return elwix_Prog;
! 85: }
! 86:
! 87: // elwix_GetErrno() Get error code of last operation
! 88: inline int
! 89: elwix_GetErrno()
! 90: {
! 91: return elwix_Errno;
! 92: }
! 93:
! 94: // elwix_GetError() Get error text of last operation
! 95: inline const char *
! 96: elwix_GetError()
! 97: {
! 98: return elwix_Error;
! 99: }
! 100:
! 101: // elwix_SetErr() Set error to variables for internal use!!!
! 102: inline void
! 103: elwix_SetErr(int eno, char *estr, ...)
! 104: {
! 105: va_list lst;
! 106:
! 107: elwix_Errno = eno;
! 108: memset(elwix_Error, 0, sizeof elwix_Error);
! 109: va_start(lst, estr);
! 110: vsnprintf(elwix_Error, sizeof elwix_Error, estr, lst);
! 111: va_end(lst);
! 112: }
! 113:
! 114: // elwix_mm_inuse() Check for memory management model
! 115: inline int
! 116: elwix_mm_inuse()
! 117: {
! 118: return use_mm & ELWIX_MPOOL;
! 119: }
! 120:
! 121:
! 122: // init libelwix routine
! 123: __attribute__((constructor)) void
! 124: _elwix_init()
! 125: {
! 126: elwixInit(ELWIX_MPOOL, 0);
! 127: }
! 128:
! 129: // fini libelwix routine
! 130: __attribute__((destructor)) void
! 131: _elwix_fini()
! 132: {
! 133: elwixFini();
! 134: }
! 135:
! 136: /*
! 137: * elwixInit() - Init libelwix library memory management
! 138: *
! 139: * @mm = memory management (ELWIX_SYSM or ELWIX_MPOOL)
! 140: * @maxmem = memory limit
! 141: * return: -1 error or !=-1 used memory management model
! 142: */
! 143: int
! 144: elwixInit(int mm, u_long maxmem)
! 145: {
! 146: switch (mm) {
! 147: case ELWIX_MPOOL: /* mpool */
! 148: elwix_mpool = mpool_init(maxmem);
! 149: if (elwix_mpool) {
! 150: e_malloc = mpool_xmalloc;
! 151: e_calloc = mpool_xcalloc;
! 152: e_realloc = mpool_xrealloc;
! 153: e_strdup = mpool_xstrdup;
! 154: e_free = mpool_xfree;
! 155: break;
! 156: } else {
! 157: mm = ELWIX_SYSM;
! 158: #undef USE_MPOOL
! 159: }
! 160: case ELWIX_SYSM: /* system */
! 161: e_malloc = malloc;
! 162: e_calloc = calloc;
! 163: e_realloc = realloc;
! 164: e_strdup = strdup;
! 165: e_free = free;
! 166: break;
! 167: default: /* not supported */
! 168: elwix_SetErr(EINVAL, "Not supported memory management");
! 169: return -1;
! 170: }
! 171:
! 172: return (use_mm = mm);
! 173: }
! 174:
! 175: /*
! 176: * elwixFini() - Finish libaitio library memory management
! 177: *
! 178: * return: none
! 179: */
! 180: void
! 181: elwixFini()
! 182: {
! 183: switch (use_mm) {
! 184: case ELWIX_MPOOL:
! 185: e_malloc = malloc;
! 186: e_calloc = calloc;
! 187: e_realloc = realloc;
! 188: e_strdup = strdup;
! 189: e_free = free;
! 190: use_mm = ELWIX_SYSM;
! 191:
! 192: mpool_destroy(&elwix_mpool);
! 193: break;
! 194: }
! 195: }
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