void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
gpr_mu_lock(&fd->mu);
GPR_ASSERT(!fd->shutdown);
fd->shutdown = 1;
set_ready_locked(exec_ctx, fd, &fd->read_closure);
set_ready_locked(exec_ctx, fd, &fd->write_closure);
gpr_mu_unlock(&fd->mu);
}
void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *watcher,
int got_read, int got_write) {
int was_polling = 0;
int kick = 0;
grpc_fd *fd = watcher->fd;
if (fd == NULL) {
return;
}
gpr_mu_lock(&fd->mu);
if (watcher == fd->read_watcher) {
/* remove read watcher, kick if we still need a read */
was_polling = 1;
if (!got_read) {
kick = 1;
}
fd->read_watcher = NULL;
}
if (watcher == fd->write_watcher) {
/* remove write watcher, kick if we still need a write */
was_polling = 1;
if (!got_write) {
kick = 1;
}
fd->write_watcher = NULL;
}
if (!was_polling && watcher->worker != NULL) {
/* remove from inactive list */
watcher->next->prev = watcher->prev;
watcher->prev->next = watcher->next;
}
if (got_read) {
if (set_ready_locked(exec_ctx, fd, &fd->read_closure)) {
kick = 1;
}
}
if (got_write) {
if (set_ready_locked(exec_ctx, fd, &fd->write_closure)) {
kick = 1;
}
}
if (kick) {
maybe_wake_one_watcher_locked(fd);
}
if (grpc_fd_is_orphaned(fd) && !has_watchers(fd) && !fd->closed) {
fd->closed = 1;
if (!fd->released) {
close(fd->fd);
}
grpc_exec_ctx_enqueue(exec_ctx, fd->on_done_closure, 1);
}
gpr_mu_unlock(&fd->mu);
GRPC_FD_UNREF(fd, "poll");
}
void grpc_fd_shutdown(grpc_fd *fd) {
size_t ncb = 0;
gpr_mu_lock(&fd->set_state_mu);
GPR_ASSERT(!gpr_atm_no_barrier_load(&fd->shutdown));
gpr_atm_rel_store(&fd->shutdown, 1);
set_ready_locked(&fd->readst, &fd->shutdown_closures[0], &ncb);
set_ready_locked(&fd->writest, &fd->shutdown_closures[0], &ncb);
gpr_mu_unlock(&fd->set_state_mu);
GPR_ASSERT(ncb <= 2);
process_callbacks(fd->shutdown_closures[0], ncb, 0 /* GPR_FALSE */,
0 /* GPR_FALSE */);
}
static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure **st) {
/* only one set_ready can be active at once (but there may be a racing
notify_on) */
gpr_mu_lock(&fd->mu);
set_ready_locked(exec_ctx, fd, st);
gpr_mu_unlock(&fd->mu);
}
static void set_ready(grpc_fd *fd, gpr_atm *st,
int allow_synchronous_callback) {
/* only one set_ready can be active at once (but there may be a racing
notify_on) */
int success;
grpc_iomgr_closure* closure;
size_t ncb = 0;
gpr_mu_lock(&fd->set_state_mu);
set_ready_locked(st, &closure, &ncb);
gpr_mu_unlock(&fd->set_state_mu);
success = !gpr_atm_acq_load(&fd->shutdown);
GPR_ASSERT(ncb <= 1);
if (ncb > 0) {
process_callbacks(closure, ncb, success, allow_synchronous_callback);
}
}