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Get rid of WORKER_LOCK_TIMEOUT. 

Instead let the workers send a message on the msg channel to each
other when they have given up the accept lock and it is now available
to be grabbed.
This commit is contained in:
Joris Vink 2019-03-21 14:03:11 +01:00
parent 8b0279879a
commit 370041656e
2 changed files with 25 additions and 19 deletions
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1
include/kore/kore.h
View File

@ -498,6 +498,7 @@ struct kore_timer {
#define KORE_MSG_CERTIFICATE 7
#define KORE_MSG_CERTIFICATE_REQ 8
#define KORE_MSG_CRL 9
#define KORE_MSG_ACCEPT_AVAILABLE 10
/* Predefined message targets. */
#define KORE_MSG_PARENT 1000

43
src/worker.c
View File

@ -53,8 +53,6 @@
#define WAIT_ANY (-1)
#endif
#define WORKER_LOCK_TIMEOUT 100
#if !defined(KORE_NO_TLS)
#define WORKER_SOLO_COUNT 2
#else
@ -74,7 +72,8 @@ static int worker_trylock(void);
static void worker_unlock(void);
static inline int worker_acceptlock_obtain(void);
static inline int worker_acceptlock_release(void);
static inline void worker_acceptlock_release(void);
static void worker_accept_avail(struct kore_msg *, const void *);
#if !defined(KORE_NO_TLS)
static void worker_entropy_recv(struct kore_msg *, const void *);
@ -83,7 +82,7 @@ static int worker_keymgr_response_verify(struct kore_msg *, const void *,
struct kore_domain **);
#endif
static u_int64_t next_lock;
static int accept_avail;
static struct kore_worker *kore_workers;
static int worker_no_lock;
static int shm_accept_key;
@ -353,8 +352,8 @@ kore_worker_entry(struct kore_worker *kw)
quit = 0;
had_lock = 0;
next_lock = 0;
next_prune = 0;
accept_avail = 1;
worker_active_connections = 0;
#if defined(KORE_USE_PGSQL)
@ -376,6 +375,8 @@ kore_worker_entry(struct kore_worker *kw)
}
#endif
kore_msg_register(KORE_MSG_ACCEPT_AVAILABLE, worker_accept_avail);
if (nlisteners == 0)
worker_no_lock = 1;
@ -405,14 +406,13 @@ kore_worker_entry(struct kore_worker *kw)
}
#endif
if (!worker->has_lock && next_lock <= now) {
if (!worker->has_lock && accept_avail) {
accept_avail = 0;
if (worker_acceptlock_obtain()) {
if (had_lock == 0) {
kore_platform_enable_accept();
had_lock = 1;
}
} else {
next_lock = now + WORKER_LOCK_TIMEOUT / 2;
}
}
@ -420,10 +420,8 @@ kore_worker_entry(struct kore_worker *kw)
kore_platform_event_wait(netwait);
now = kore_time_ms();
if (worker->has_lock) {
if (worker_acceptlock_release())
next_lock = now + WORKER_LOCK_TIMEOUT;
}
if (worker->has_lock)
worker_acceptlock_release();
if (!worker->has_lock) {
if (had_lock == 1) {
@ -600,25 +598,26 @@ kore_worker_make_busy(void)
if (worker->has_lock) {
worker_unlock();
worker->has_lock = 0;
next_lock = kore_time_ms() + WORKER_LOCK_TIMEOUT;
kore_msg_send(KORE_MSG_WORKER_ALL,
KORE_MSG_ACCEPT_AVAILABLE, NULL, 0);
}
}
static inline int
static inline void
worker_acceptlock_release(void)
{
if (worker_count == WORKER_SOLO_COUNT || worker_no_lock == 1)
return (0);
return;
if (worker->has_lock != 1)
return (0);
return;
if (worker_active_connections < worker_max_connections) {
#if !defined(KORE_NO_HTTP)
if (http_request_count < http_request_limit)
return (0);
return;
#else
return (0);
return;
#endif
}
@ -629,7 +628,7 @@ worker_acceptlock_release(void)
worker_unlock();
worker->has_lock = 0;
return (1);
kore_msg_send(KORE_MSG_WORKER_ALL, KORE_MSG_ACCEPT_AVAILABLE, NULL, 0);
}
static inline int
@ -684,6 +683,12 @@ worker_unlock(void)
kore_log(LOG_NOTICE, "worker_unlock(): wasnt locked");
}
static void
worker_accept_avail(struct kore_msg *msg, const void *data)
{
accept_avail = 1;
}
#if !defined(KORE_NO_TLS)
static void
worker_entropy_recv(struct kore_msg *msg, const void *data)