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Use a pthread conditional to wake the workqueue in ckdb with a 420ms timeout instead of polling every 4ms

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This commit is contained in:
ckolivas 2014-08-24 15:19:47 +10:00
parent cfa9824b08
commit 38db91bf74
1 changed files with 20 additions and 2 deletions
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22
src/ckdb.c
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@ -723,6 +723,8 @@ typedef struct logqueue {
static K_LIST *logqueue_free;
static K_STORE *logqueue_store;
static pthread_mutex_t wq_waitlock;
static pthread_cond_t wq_waitcond;
// WORKQUEUE
typedef struct workqueue {
@ -6300,6 +6302,8 @@ static bool setup_data()
cklock_init(&fpm_lock);
cksem_init(&socketer_sem);
mutex_init(&wq_waitlock);
cond_init(&wq_waitcond);
alloc_storage();
@ -8606,6 +8610,9 @@ static void *socketer(__maybe_unused void *arg)
K_WLOCK(workqueue_free);
k_add_tail(workqueue_store, item);
K_WUNLOCK(workqueue_free);
mutex_lock(&wq_waitlock);
pthread_cond_signal(&wq_waitcond);
mutex_unlock(&wq_waitlock);
break;
// Code error
default:
@ -8984,8 +8991,19 @@ static void *listener(void *arg)
if (wq_item) {
process_queued(conn, wq_item);
tick();
} else
cksleep_ms(4);
} else {
const ts_t tsdiff = {0, 420000000};
tv_t now;
ts_t abs;
tv_time(&now);
tv_to_ts(&abs, &now);
timeraddspec(&abs, &tsdiff);
mutex_lock(&wq_waitlock);
pthread_cond_timedwait(&wq_waitcond, &wq_waitlock, &abs);
mutex_unlock(&wq_waitlock);
}
}
PQfinish(conn);