/*
* __curlog_next --
* WT_CURSOR.next method for the step log cursor type.
*/
static int
__curlog_next(WT_CURSOR *cursor)
{
WT_CURSOR_LOG *cl;
WT_DECL_RET;
WT_SESSION_IMPL *session;
cl = (WT_CURSOR_LOG *)cursor;
CURSOR_API_CALL(cursor, session, next, NULL);
/*
* If we don't have a record, or went to the end of the record we
* have, or we are in the zero-fill portion of the record, get a
* new one.
*/
if (cl->stepp == NULL || cl->stepp >= cl->stepp_end || !*cl->stepp) {
cl->txnid = 0;
WT_ERR(__wt_log_scan(session, cl->next_lsn, WT_LOGSCAN_ONE,
__curlog_logrec, cl));
}
WT_ASSERT(session, cl->logrec->data != NULL);
WT_ERR(__curlog_kv(session, cursor));
WT_STAT_FAST_CONN_INCR(session, cursor_next);
WT_STAT_FAST_DATA_INCR(session, cursor_next);
err: API_END_RET(session, ret);
}
/*
* __curlog_search --
* WT_CURSOR.search method for the log cursor type.
*/
static int
__curlog_search(WT_CURSOR *cursor)
{
WT_CURSOR_LOG *cl;
WT_DECL_RET;
WT_LSN key;
WT_SESSION_IMPL *session;
uint32_t counter;
cl = (WT_CURSOR_LOG *)cursor;
CURSOR_API_CALL(cursor, session, search, NULL);
/*
* !!! We are ignoring the counter and only searching based on the LSN.
*/
WT_ERR(__wt_cursor_get_key((WT_CURSOR *)cl,
&key.file, &key.offset, &counter));
WT_ERR(__wt_log_scan(session, &key, WT_LOGSCAN_ONE,
__curlog_logrec, cl));
WT_ERR(__curlog_kv(session, cursor));
WT_STAT_FAST_CONN_INCR(session, cursor_search);
WT_STAT_FAST_DATA_INCR(session, cursor_search);
err: API_END_RET(session, ret);
}
/*
* __curlog_search --
* WT_CURSOR.search method for the log cursor type.
*/
static int
__curlog_search(WT_CURSOR *cursor)
{
WT_CURSOR_LOG *cl;
WT_DECL_RET;
WT_LSN key;
WT_SESSION_IMPL *session;
uint32_t counter, key_file, key_offset, raw;
cl = (WT_CURSOR_LOG *)cursor;
/* Temporarily turn off raw so we can do direct cursor operations. */
raw = F_MASK(cursor, WT_CURSTD_RAW);
F_CLR(cursor, WT_CURSTD_RAW);
CURSOR_API_CALL(cursor, session, search, NULL);
/*
* !!! We are ignoring the counter and only searching based on the LSN.
*/
WT_ERR(__wt_cursor_get_key(cursor, &key_file, &key_offset, &counter));
WT_SET_LSN(&key, key_file, key_offset);
ret = __wt_log_scan(session, &key, WT_LOGSCAN_ONE,
__curlog_logrec, cl);
if (ret == ENOENT)
ret = WT_NOTFOUND;
WT_ERR(ret);
WT_ERR(__curlog_kv(session, cursor));
WT_STAT_CONN_INCR(session, cursor_search);
WT_STAT_DATA_INCR(session, cursor_search);
err: F_SET(cursor, raw);
API_END_RET(session, ret);
}
