mf_tempdir.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include "mysys_priv.h"
- #include <m_string.h>
- #if defined( __WIN__) || defined(OS2) || defined(__NETWARE__)
- #define DELIM ';'
- #else
- #define DELIM ':'
- #endif
- my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist)
- {
- char *end, *copy;
- char buff[FN_REFLEN];
- DYNAMIC_ARRAY t_arr;
- pthread_mutex_init(&tmpdir->mutex, MY_MUTEX_INIT_FAST);
- if (my_init_dynamic_array(&t_arr, sizeof(char*), 1, 5))
- return TRUE;
- if (!pathlist || !pathlist[0])
- {
- /* Get default temporary directory */
- pathlist=getenv("TMPDIR"); /* Use this if possible */
- #if defined( __WIN__) || defined(OS2) || defined(__NETWARE__)
- if (!pathlist)
- pathlist=getenv("TEMP");
- if (!pathlist)
- pathlist=getenv("TMP");
- #endif
- if (!pathlist || !pathlist[0])
- pathlist=(char*) P_tmpdir;
- }
- do
- {
- end=strcend(pathlist, DELIM);
- convert_dirname(buff, pathlist, end);
- if (!(copy=my_strdup(buff, MYF(MY_WME))))
- return TRUE;
- if (insert_dynamic(&t_arr, (gptr)©))
- return TRUE;
- pathlist=end+1;
- }
- while (*end);
- freeze_size(&t_arr);
- tmpdir->list=(char **)t_arr.buffer;
- tmpdir->max=t_arr.elements-1;
- tmpdir->cur=0;
- return FALSE;
- }
- char *my_tmpdir(MY_TMPDIR *tmpdir)
- {
- char *dir;
- pthread_mutex_lock(&tmpdir->mutex);
- dir=tmpdir->list[tmpdir->cur];
- tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur+1;
- pthread_mutex_unlock(&tmpdir->mutex);
- return dir;
- }
- void free_tmpdir(MY_TMPDIR *tmpdir)
- {
- uint i;
- for (i=0; i<=tmpdir->max; i++)
- my_free(tmpdir->list[i], MYF(0));
- my_free((gptr)tmpdir->list, MYF(0));
- pthread_mutex_destroy(&tmpdir->mutex);
- }