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Check quit flag before pthread_cond_wait

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This commit is contained in:
Cloud Wu
2015-06-09 20:00:20 +08:00
parent 8214c53891
commit 57d43a588e
1 changed files with 17 additions and 14 deletions
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31
skynet-src/skynet_start.c
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@@ -22,6 +22,7 @@ struct monitor {
pthread_cond_t cond;
pthread_mutex_t mutex;
int sleep;
int quit;
};
struct worker_parm {
@@ -49,7 +50,7 @@ wakeup(struct monitor *m, int busy) {
}
static void *
_socket(void *p) {
thread_socket(void *p) {
struct monitor * m = p;
skynet_initthread(THREAD_SOCKET);
for (;;) {
@@ -79,7 +80,7 @@ free_monitor(struct monitor *m) {
}
static void *
_monitor(void *p) {
thread_monitor(void *p) {
struct monitor * m = p;
int i;
int n = m->count;
@@ -99,7 +100,7 @@ _monitor(void *p) {
}
static void *
_timer(void *p) {
thread_timer(void *p) {
struct monitor * m = p;
skynet_initthread(THREAD_TIMER);
for (;;) {
@@ -111,12 +112,14 @@ _timer(void *p) {
// wakeup socket thread
skynet_socket_exit();
// wakeup all worker thread
// we don't need lock m before set m->quit, because it can only set once.
m->quit = 1;
pthread_cond_broadcast(&m->cond);
return NULL;
}
static void *
_worker(void *p) {
thread_worker(void *p) {
struct worker_parm *wp = p;
int id = wp->id;
int weight = wp->weight;
@@ -124,28 +127,28 @@ _worker(void *p) {
struct skynet_monitor *sm = m->m[id];
skynet_initthread(THREAD_WORKER);
struct message_queue * q = NULL;
for (;;) {
while (!m->quit) {
q = skynet_context_message_dispatch(sm, q, weight);
if (q == NULL) {
if (pthread_mutex_lock(&m->mutex) == 0) {
++ m->sleep;
// "spurious wakeup" is harmless,
// because skynet_context_message_dispatch() can be call at any time.
pthread_cond_wait(&m->cond, &m->mutex);
if (!m->quit)
pthread_cond_wait(&m->cond, &m->mutex);
-- m->sleep;
if (pthread_mutex_unlock(&m->mutex)) {
fprintf(stderr, "unlock mutex error");
exit(1);
}
}
}
CHECK_ABORT
}
}
return NULL;
}
static void
_start(int thread) {
start(int thread) {
pthread_t pid[thread+3];
struct monitor *m = skynet_malloc(sizeof(*m));
@@ -167,9 +170,9 @@ _start(int thread) {
exit(1);
}
create_thread(&pid[0], _monitor, m);
create_thread(&pid[1], _timer, m);
create_thread(&pid[2], _socket, m);
create_thread(&pid[0], thread_monitor, m);
create_thread(&pid[1], thread_timer, m);
create_thread(&pid[2], thread_socket, m);
static int weight[] = {
-1, -1, -1, -1, 0, 0, 0, 0,
@@ -185,7 +188,7 @@ _start(int thread) {
} else {
wp[i].weight = 0;
}
create_thread(&pid[i+3], _worker, &wp[i]);
create_thread(&pid[i+3], thread_worker, &wp[i]);
}
for (i=0;i<thread+3;i++) {
@@ -231,7 +234,7 @@ skynet_start(struct skynet_config * config) {
bootstrap(ctx, config->bootstrap);
_start(config->thread);
start(config->thread);
// harbor_exit may call socket send, so it should exit before socket_free
skynet_harbor_exit();