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readlock on db_find. a db_find during a background rescan apparently kills the db handle. still a small race there, need to rethink locking altogether.

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This commit is contained in:
Ron Pedde 2004-11-15 05:39:11 +00:00
parent 90e50f9818
commit cbfbd9990f
1 changed files with 21 additions and 2 deletions
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23
src/db-gdbm.c
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@ -422,7 +422,10 @@ int db_end_initial_update(void) {
rbdestroy(db_removed);
DPRINTF(E_DBG,L_DB,"Reorganizing db\n");
gdbm_reorganize(db_songs);
gdbm_sync(db_songs);
DPRINTF(E_DBG,L_DB,"Reorganize done\n");
db_unlock();
return 0;
@ -1160,21 +1163,37 @@ int db_playlist_items_enum_end(ENUMHANDLE handle) {
MP3FILE *db_find(int id) { /* FIXME: Not reentrant */
MP3FILE *pmp3=NULL;
datum key, content;
int is_locked=0;
key.dptr=(char*)&id;
key.dsize=sizeof(int);
if(!db_update_mode) {
db_readlock(); /** \todo fix race */
is_locked=1;
}
content=gdbm_fetch(db_songs,key);
MEMNOTIFY(content.dptr);
if(!content.dptr)
if(!content.dptr) {
DPRINTF(E_WARN,L_DB,"Could not find id %d\n",id);
if(is_locked)
db_unlock();
return NULL;
}
pmp3=(MP3FILE*)malloc(sizeof(MP3FILE));
if(!pmp3)
if(!pmp3) {
DPRINTF(E_LOG,L_MISC,"Malloc failed in db_find\n");
if(is_locked)
db_unlock();
return NULL;
}
db_unpackrecord(&content,pmp3);
free(content.dptr);
if(is_locked)
db_unlock();
return pmp3;
}