void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
if (specific_worker != NULL) {
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
for (specific_worker = p->root_worker.next;
specific_worker != &p->root_worker;
specific_worker = specific_worker->next) {
gpr_cv_signal(&specific_worker->cv);
}
p->kicked_without_pollers = 1;
} else {
gpr_cv_signal(&specific_worker->cv);
}
} else {
specific_worker = pop_front_worker(p);
if (specific_worker != NULL) {
push_back_worker(p, specific_worker);
gpr_cv_signal(&specific_worker->cv);
} else {
p->kicked_without_pollers = 1;
}
}
}
void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
if (specific_worker != NULL) {
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
for (specific_worker =
p->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next;
specific_worker != &p->root_worker;
specific_worker =
specific_worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next) {
specific_worker->kicked = 1;
gpr_cv_signal(&specific_worker->cv);
}
p->kicked_without_pollers = 1;
if (p->is_iocp_worker) {
grpc_iocp_kick();
}
} else {
if (p->is_iocp_worker) {
if (g_active_poller == specific_worker) {
grpc_iocp_kick();
}
} else {
specific_worker->kicked = 1;
gpr_cv_signal(&specific_worker->cv);
}
}
} else {
specific_worker =
pop_front_worker(&p->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
if (specific_worker != NULL) {
grpc_pollset_kick(p, specific_worker);
} else if (p->is_iocp_worker) {
grpc_iocp_kick();
} else {
p->kicked_without_pollers = 1;
}
}
}
void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
/* pollset->mu already held */
if (specific_worker != NULL) {
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
for (specific_worker = p->root_worker.next;
specific_worker != &p->root_worker;
specific_worker = specific_worker->next) {
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
}
p->kicked_without_pollers = 1;
} else if (gpr_tls_get(&g_current_thread_worker) !=
(gpr_intptr)specific_worker) {
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
}
} else if (gpr_tls_get(&g_current_thread_poller) != (gpr_intptr)p) {
specific_worker = pop_front_worker(p);
if (specific_worker != NULL) {
push_back_worker(p, specific_worker);
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd);
} else {
p->kicked_without_pollers = 1;
}
}
}
void grpc_pollset_kick_ext(grpc_pollset *p,
grpc_pollset_worker *specific_worker,
uint32_t flags) {
GPR_TIMER_BEGIN("grpc_pollset_kick_ext", 0);
/* pollset->mu already held */
if (specific_worker != NULL) {
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
GPR_TIMER_BEGIN("grpc_pollset_kick_ext.broadcast", 0);
GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
for (specific_worker = p->root_worker.next;
specific_worker != &p->root_worker;
specific_worker = specific_worker->next) {
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
}
p->kicked_without_pollers = 1;
GPR_TIMER_END("grpc_pollset_kick_ext.broadcast", 0);
} else if (gpr_tls_get(&g_current_thread_worker) !=
(intptr_t)specific_worker) {
GPR_TIMER_MARK("different_thread_worker", 0);
if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
specific_worker->reevaluate_polling_on_wakeup = 1;
}
specific_worker->kicked_specifically = 1;
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
} else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) {
GPR_TIMER_MARK("kick_yoself", 0);
if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
specific_worker->reevaluate_polling_on_wakeup = 1;
}
specific_worker->kicked_specifically = 1;
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
}
} else if (gpr_tls_get(&g_current_thread_poller) != (intptr_t)p) {
GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
GPR_TIMER_MARK("kick_anonymous", 0);
specific_worker = pop_front_worker(p);
if (specific_worker != NULL) {
if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) {
GPR_TIMER_MARK("kick_anonymous_not_self", 0);
push_back_worker(p, specific_worker);
specific_worker = pop_front_worker(p);
if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 &&
gpr_tls_get(&g_current_thread_worker) ==
(intptr_t)specific_worker) {
push_back_worker(p, specific_worker);
specific_worker = NULL;
}
}
if (specific_worker != NULL) {
GPR_TIMER_MARK("finally_kick", 0);
push_back_worker(p, specific_worker);
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
}
} else {
GPR_TIMER_MARK("kicked_no_pollers", 0);
p->kicked_without_pollers = 1;
}
}
GPR_TIMER_END("grpc_pollset_kick_ext", 0);
}
void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
grpc_pollset_worker *worker, gpr_timespec now,
gpr_timespec deadline) {
int added_worker = 0;
worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev = NULL;
worker->kicked = 0;
worker->pollset = pollset;
gpr_cv_init(&worker->cv);
if (grpc_timer_check(exec_ctx, now, &deadline)) {
goto done;
}
if (!pollset->kicked_without_pollers && !pollset->shutting_down) {
if (g_active_poller == NULL) {
grpc_pollset_worker *next_worker;
/* become poller */
pollset->is_iocp_worker = 1;
g_active_poller = worker;
gpr_mu_unlock(&grpc_polling_mu);
grpc_iocp_work(exec_ctx, deadline);
grpc_exec_ctx_flush(exec_ctx);
gpr_mu_lock(&grpc_polling_mu);
pollset->is_iocp_worker = 0;
g_active_poller = NULL;
/* try to get a worker from this pollsets worker list */
next_worker = pop_front_worker(&pollset->root_worker,
GRPC_POLLSET_WORKER_LINK_POLLSET);
if (next_worker == NULL) {
/* try to get a worker from the global list */
next_worker = pop_front_worker(&g_global_root_worker,
GRPC_POLLSET_WORKER_LINK_GLOBAL);
}
if (next_worker != NULL) {
next_worker->kicked = 1;
gpr_cv_signal(&next_worker->cv);
}
if (pollset->shutting_down && pollset->on_shutdown != NULL) {
grpc_exec_ctx_enqueue(exec_ctx, pollset->on_shutdown, 1);
pollset->on_shutdown = NULL;
}
goto done;
}
push_front_worker(&g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL,
worker);
push_front_worker(&pollset->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET,
worker);
added_worker = 1;
while (!worker->kicked) {
if (gpr_cv_wait(&worker->cv, &grpc_polling_mu, deadline)) {
break;
}
}
} else {
pollset->kicked_without_pollers = 0;
}
done:
if (!grpc_closure_list_empty(exec_ctx->closure_list)) {
gpr_mu_unlock(&grpc_polling_mu);
grpc_exec_ctx_flush(exec_ctx);
gpr_mu_lock(&grpc_polling_mu);
}
if (added_worker) {
remove_worker(worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
remove_worker(worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
}
gpr_cv_destroy(&worker->cv);
}