101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
/* Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "mysys_priv.h"
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#include <m_string.h>
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#include "prealloced_array.h"
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#include "mutex_lock.h"
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#if defined(_WIN32)
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#define DELIM ';'
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#else
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#define DELIM ':'
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#endif
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my_bool init_tmpdir(MY_TMPDIR *tmpdir, const char *pathlist)
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{
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char *end, *copy;
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char buff[FN_REFLEN];
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DBUG_ENTER("init_tmpdir");
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DBUG_PRINT("enter", ("pathlist: %s", pathlist ? pathlist : "NULL"));
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Prealloced_array<char*, 10, true> full_list(key_memory_MY_TMPDIR_full_list);
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memset(tmpdir, 0, sizeof(*tmpdir));
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if (!pathlist || !pathlist[0])
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{
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/* Get default temporary directory */
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pathlist=getenv("TMPDIR"); /* Use this if possible */
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#if defined(_WIN32)
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if (!pathlist)
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pathlist=getenv("TEMP");
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if (!pathlist)
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pathlist=getenv("TMP");
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#endif
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if (!pathlist || !pathlist[0])
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pathlist= DEFAULT_TMPDIR;
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}
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do
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{
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size_t length;
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end=strcend(pathlist, DELIM);
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strmake(buff, pathlist, (uint) (end-pathlist));
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length= cleanup_dirname(buff, buff);
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if (!(copy= my_strndup(key_memory_MY_TMPDIR_full_list,
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buff, length, MYF(MY_WME))) ||
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full_list.push_back(copy))
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DBUG_RETURN(TRUE);
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pathlist=end+1;
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}
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while (*end);
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tmpdir->list=
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static_cast<char**>(my_malloc(key_memory_MY_TMPDIR_full_list,
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sizeof(char*) * full_list.size(),
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MYF(MY_WME)));
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if (tmpdir->list == NULL)
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DBUG_RETURN(TRUE);
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mysql_mutex_init(key_TMPDIR_mutex, &tmpdir->mutex, MY_MUTEX_INIT_FAST);
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memcpy(tmpdir->list, &full_list[0], sizeof(char*) * full_list.size());
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tmpdir->max= full_list.size() - 1;
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tmpdir->cur= 0;
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DBUG_RETURN(FALSE);
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}
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char *my_tmpdir(MY_TMPDIR *tmpdir)
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{
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if (0 == tmpdir->max)
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return tmpdir->list[0];
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Mutex_lock(&tmpdir->mutex);
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char *dir= tmpdir->list[tmpdir->cur];
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tmpdir->cur= (tmpdir->cur == tmpdir->max) ? 0 : tmpdir->cur + 1;
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return dir;
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}
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void free_tmpdir(MY_TMPDIR *tmpdir)
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{
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if (tmpdir->list == NULL)
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return;
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for (uint i= 0; i <= tmpdir->max; i++)
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my_free(tmpdir->list[i]);
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my_free(tmpdir->list);
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mysql_mutex_destroy(&tmpdir->mutex);
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}
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