本文整理汇总了C++中DB_ENV::set_lg_dir方法的典型用法代码示例。如果您正苦于以下问题：C++ DB_ENV::set_lg_dir方法的具体用法？C++ DB_ENV::set_lg_dir怎么用？C++ DB_ENV::set_lg_dir使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DB_ENV的用法示例。
在下文中一共展示了DB_ENV::set_lg_dir方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: sizeof
/*
* This should be done before the program is open for business.
* As such, it does not need to be reentrant.
*/
int
open_db_env(char *topdir)
{
DB_ENV *tmpenv = NULL;
int st;
struct stat64 sbuf;
char logdir[MAXPATHLEN+1];
char tmpdir[MAXPATHLEN+1];
char *dirarr[3];
int i;
if (topdir == NULL) {
return (-1);
}
snprintf(logdir, sizeof (tmpdir), "%s/.logs", topdir);
snprintf(tmpdir, sizeof (tmpdir), "%s/.tmp", topdir);
dirarr[0] = topdir;
dirarr[1] = logdir;
dirarr[2] = tmpdir;
/* first, set up the environment */
st = db_env_create(&tmpenv, 0);
if (st != 0) {
return (st);
}
/* make sure the directories exist */
for (i = 0; i < 3; i++) {
st = stat64(dirarr[i], &sbuf);
if ((st != 0) && (errno == ENOENT)) {
st = mkdirp(dirarr[i], 0744);
if (st == 0) {
st = stat64(dirarr[i], &sbuf);
}
}
if ((st == 0) && (!S_ISDIR(sbuf.st_mode))) {
st = -1;
break;
}
}
if (st != 0) {
return (st);
}
st = tmpenv->set_data_dir(tmpenv, topdir);
if (st != 0) {
return (st);
}
st = tmpenv->set_lg_dir(tmpenv, logdir);
if (st != 0) {
return (st);
}
st = tmpenv->set_tmp_dir(tmpenv, tmpdir);
if (st != 0) {
return (st);
}
st = tmpenv->set_flags(tmpenv, env_fl, 1);
if (st != 0) {
return (st);
}
/* overall database cache size */
st = tmpenv->set_cachesize(tmpenv, 0, (60 * MEGA), 1);
st = tmpenv->set_shm_key(tmpenv, FSM_SHM_MASTER_KEY);
if (st != 0) {
return (st);
}
/* log buffer in memory */
st = tmpenv->set_lg_bsize(tmpenv, (30 * MEGA));
if (st != 0) {
return (st);
}
/* set up additional error logging */
tmpenv->set_errcall(tmpenv, fsmdb_log_err);
/* Increase the number of locks available */
tmpenv->set_lk_max_locks(tmpenv, 10000);
tmpenv->set_lk_max_lockers(tmpenv, 10000);
tmpenv->set_lk_max_objects(tmpenv, 10000);
/* Increase the number of concurrent transactions available */
/* Note: Default in 4.4-20 is '20'. In later versions it's 100 */
tmpenv->set_tx_max(tmpenv, 100);
st = tmpenv->open(tmpenv, topdir, env_ofl, 0644);
if (st != 0) {
/* check for a major failure */
//.........这里部分代码省略.........