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Wrap bulk scan in a db transaction (credit @chme)

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This commit is contained in:
ejurgensen 2014-05-11 23:13:09 +02:00
parent 44c3dba3d9
commit a5b2fbc0fe
3 changed files with 68 additions and 2 deletions
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38
src/db.c
View File

@ -850,6 +850,44 @@ db_get_count(char *query)
}
/* Transactions */
void
db_transaction_begin(void)
{
char *query = "BEGIN TRANSACTION;";
char *errmsg;
int ret;
DPRINTF(E_DBG, L_DB, "Running query '%s'\n", query);
ret = db_exec(query, &errmsg);
if (ret != SQLITE_OK)
{
DPRINTF(E_LOG, L_DB, "SQL error running '%s': %s\n", query, errmsg);
sqlite3_free(errmsg);
}
}
void
db_transaction_end(void)
{
char *query = "END TRANSACTION;";
char *errmsg;
int ret;
DPRINTF(E_DBG, L_DB, "Running query '%s'\n", query);
ret = db_exec(query, &errmsg);
if (ret != SQLITE_OK)
{
DPRINTF(E_LOG, L_DB, "SQL error running '%s': %s\n", query, errmsg);
sqlite3_free(errmsg);
}
}
/* Queries */
static int
db_build_query_index_clause(struct query_params *qp, char **i)

7
src/db.h
View File

@ -318,6 +318,13 @@ db_purge_cruft(time_t ref);
void
db_purge_all(void);
/* Transactions */
void
db_transaction_begin(void);
void
db_transaction_end(void);
/* Queries */
int
db_query_start(struct query_params *qp);

25
src/filescanner.c
View File

@ -97,6 +97,9 @@ static pthread_t tid_scan;
static struct deferred_pl *playlists;
static struct stacked_dir *dirstack;
/* Count of files scanned during a bulk scan */
static int counter;
/* Forward */
static void
bulk_scan(int flags);
@ -694,6 +697,16 @@ process_file(char *file, time_t mtime, off_t size, int type, int flags)
/* Not any kind of special file, so let's see if it's a media file */
filescanner_process_media(file, mtime, size, type, NULL);
counter++;
/* When in bulk mode, split transaction in pieces of 200 */
if ((flags & F_SCAN_BULK) && (counter % 200 == 0))
{
DPRINTF(E_LOG, L_SCAN, "Scanned %d files...\n", counter);
db_transaction_end();
db_transaction_begin();
}
}
/* Thread: scan */
@ -931,6 +944,7 @@ bulk_scan(int flags)
char *path;
char *deref;
time_t start;
time_t end;
int i;
start = time(NULL);
@ -960,7 +974,10 @@ bulk_scan(int flags)
continue;
}
counter = 0;
db_transaction_begin();
process_directories(deref, flags);
db_transaction_end();
free(deref);
@ -977,14 +994,18 @@ bulk_scan(int flags)
if (dirstack)
DPRINTF(E_LOG, L_SCAN, "WARNING: unhandled leftover directories\n");
end = time(NULL);
if (flags & F_SCAN_FAST)
DPRINTF(E_LOG, L_SCAN, "Bulk library scan complete (with file scan disabled)\n");
{
DPRINTF(E_LOG, L_SCAN, "Bulk library scan completed in %.f sec (with file scan disabled)\n", difftime(end, start));
}
else
{
DPRINTF(E_DBG, L_SCAN, "Purging old database content\n");
db_purge_cruft(start);
DPRINTF(E_LOG, L_SCAN, "Bulk library scan complete\n");
DPRINTF(E_LOG, L_SCAN, "Bulk library scan completed in %.f sec\n", difftime(end, start));
}
}