void* ExpirationHandler::thread_func(void *arg){
ExpirationHandler *handler = (ExpirationHandler *)arg;
int64_t last_load_empty_times = 0;
while(!handler->thread_quit){
SSDB *ssdb = handler->ssdb;
if(!ssdb){
break;
}
if(!handler->enable){
usleep(10 * 1000);
continue;
}
int64_t current = time_ms();
if(handler->fast_keys.empty() && (current - last_load_empty_times) < ADVANCE_READ_TTL * 1000){
usleep(10 * 1000);
continue;
}
if(!handler->fast_keys.empty() && handler->first_timeout > current){
usleep(10 * 1000);
continue;
}
{
Locking l(&handler->mutex);
if(!handler->enable){
continue;
}
// TOODO 增加最大值的限制
if(handler->fast_keys.empty()){
int64_t expired = current + ADVANCE_READ_TTL * 1000;
handler->load_expiration_keys_from_db(expired, BATCH_SIZE);
handler->first_timeout = INT64_MAX;
if(handler->fast_keys.empty()) {
last_load_empty_times = current;
}
}
int64_t score;
std::string key;
if(handler->fast_keys.front(&key, &score)){
handler->first_timeout = score;
if(score <= current){
log_debug("expired %s", key.c_str());
ssdb->del(key);
ssdb->zdel(handler->list_name, key);
handler->fast_keys.pop_front();
}
}
}
}
log_debug("ExpirationHandler thread quit");
handler->thread_quit = false;
return (void *)NULL;
}
void* ExpirationHandler::thread_func(void *arg){
ExpirationHandler *handler = (ExpirationHandler *)arg;
while(!handler->thread_quit){
SSDB *ssdb = handler->ssdb;
if(!ssdb){
break;
}
if(handler->first_timeout > time_ms()){
usleep(10 * 1000);
continue;
}
{
Locking l(&handler->mutex);
if(handler->fast_keys.empty()){
handler->load_expiration_keys_from_db(BATCH_SIZE);
handler->first_timeout = INT64_MAX;
}
int64_t score;
std::string key;
if(handler->fast_keys.front(&key, &score)){
handler->first_timeout = score;
if(score <= time_ms()){
log_debug("expired %s", key.c_str());
ssdb->del(key);
ssdb->zdel(handler->list_name, key);
handler->fast_keys.pop_front();
}
}
}
}
log_debug("ExpirationHandler thread quit");
handler->thread_quit = false;
return (void *)NULL;
}
