00001 /* 00002 * Copyright Droids Corporation (2007) 00003 * Olivier MATZ <zer0@droids-corp.org> 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License as published by 00007 * the Free Software Foundation; either version 2 of the License, or 00008 * (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 * 00019 * Revision : $Id: cirbuf_add_tail.c,v 1.2 2008-01-08 20:05:02 zer0 Exp $ 00020 * 00021 */ 00022 00023 #include <string.h> 00024 00025 #include <cirbuf.h> 00026 00027 00028 /* add at tail */ 00029 00030 00031 static inline void 00032 __cirbuf_add_tail(struct cirbuf * cbuf, char c) 00033 { 00034 if (!CIRBUF_IS_EMPTY(cbuf)) { 00035 cbuf->end ++; 00036 cbuf->end %= cbuf->maxlen; 00037 } 00038 cbuf->buf[cbuf->end] = c; 00039 cbuf->len ++; 00040 } 00041 00042 cirbuf_int 00043 cirbuf_add_tail_safe(struct cirbuf * cbuf, char c) 00044 { 00045 if (cbuf && !CIRBUF_IS_FULL(cbuf)) { 00046 __cirbuf_add_tail(cbuf, c); 00047 return 0; 00048 } 00049 return -EINVAL; 00050 } 00051 00052 void 00053 cirbuf_add_tail(struct cirbuf * cbuf, char c) 00054 { 00055 __cirbuf_add_tail(cbuf, c); 00056 } 00057 00058
1.5.6