mirror of https://github.com/yandex/odyssey.git
90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
#ifndef ODYSSEY_WORKER_POOL_H
|
|
#define ODYSSEY_WORKER_POOL_H
|
|
|
|
/*
|
|
* Odyssey.
|
|
*
|
|
* Scalable PostgreSQL connection pooler.
|
|
*/
|
|
|
|
#include "machinarium.h"
|
|
|
|
typedef struct od_worker_pool od_worker_pool_t;
|
|
|
|
struct od_worker_pool {
|
|
od_worker_t *pool;
|
|
int round_robin;
|
|
int count;
|
|
};
|
|
|
|
static inline void od_worker_pool_init(od_worker_pool_t *pool)
|
|
{
|
|
pool->count = 0;
|
|
pool->round_robin = 0;
|
|
pool->pool = NULL;
|
|
}
|
|
|
|
static inline int od_worker_pool_start(od_worker_pool_t *pool,
|
|
od_global_t *global, int count)
|
|
{
|
|
pool->pool = malloc(sizeof(od_worker_t) * count);
|
|
if (pool->pool == NULL)
|
|
return -1;
|
|
pool->count = count;
|
|
int i;
|
|
for (i = 0; i < count; i++) {
|
|
od_worker_t *worker = &pool->pool[i];
|
|
od_worker_init(worker, global, i);
|
|
int rc;
|
|
rc = od_worker_start(worker);
|
|
if (rc == -1)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void od_worker_pool_stop(od_worker_pool_t *pool)
|
|
{
|
|
for (int i = 0; i < pool->count; i++) {
|
|
od_worker_t *worker = &pool->pool[i];
|
|
machine_stop(worker->machine);
|
|
}
|
|
}
|
|
|
|
static inline void od_worker_pool_wait()
|
|
{
|
|
machine_sleep(1);
|
|
}
|
|
|
|
static inline void
|
|
od_worker_pool_wait_gracefully_shutdown(od_worker_pool_t *pool)
|
|
{
|
|
// // In fact we cannot wait anything here - machines may be in epoll
|
|
// waiting
|
|
// // No new TLS handshakes should be initiated, so, just wait a bit.
|
|
// machine_sleep(1);
|
|
for (int i = 0; i < pool->count; i++) {
|
|
od_worker_t *worker = &pool->pool[i];
|
|
int rc = machine_wait(worker->machine);
|
|
if (rc != MM_OK_RETCODE)
|
|
return;
|
|
}
|
|
}
|
|
|
|
static inline void od_worker_pool_feed(od_worker_pool_t *pool,
|
|
machine_msg_t *msg)
|
|
{
|
|
int next = pool->round_robin;
|
|
if (pool->round_robin >= pool->count) {
|
|
pool->round_robin = 0;
|
|
next = 0;
|
|
}
|
|
pool->round_robin++;
|
|
|
|
od_worker_t *worker;
|
|
worker = &pool->pool[next];
|
|
machine_channel_write(worker->task_channel, msg);
|
|
}
|
|
|
|
#endif /* ODYSSEY_WORKER_POOL_H */
|