/* pollable must be materialized */
static grpc_error *pollable_add_fd(pollable *p, grpc_fd *fd) {
grpc_error *error = GRPC_ERROR_NONE;
static const char *err_desc = "pollable_add_fd";
const int epfd = p->epfd;
GPR_ASSERT(epfd != -1);
if (GRPC_TRACER_ON(grpc_polling_trace)) {
gpr_log(GPR_DEBUG, "add fd %p to pollable %p", fd, p);
}
gpr_mu_lock(&fd->orphaned_mu);
if (fd->orphaned) {
gpr_mu_unlock(&fd->orphaned_mu);
return GRPC_ERROR_NONE;
}
struct epoll_event ev_fd = {
.events = (uint32_t)(EPOLLET | EPOLLIN | EPOLLOUT | EPOLLEXCLUSIVE),
.data.ptr = fd};
if (epoll_ctl(epfd, EPOLL_CTL_ADD, fd->fd, &ev_fd) != 0) {
switch (errno) {
case EEXIST:
break;
default:
append_error(&error, GRPC_OS_ERROR(errno, "epoll_ctl"), err_desc);
}
}
gpr_mu_unlock(&fd->orphaned_mu);
return error;
}
/*******************************************************************************
* Pollset Definitions
*/
GPR_TLS_DECL(g_current_thread_pollset);
GPR_TLS_DECL(g_current_thread_worker);
/* Global state management */
static grpc_error *pollset_global_init(void) {
gpr_tls_init(&g_current_thread_pollset);
gpr_tls_init(&g_current_thread_worker);
pollable_init(&g_empty_pollable, PO_EMPTY_POLLABLE);
return GRPC_ERROR_NONE;
}
void grpc_pollset_global_init(void) {
gpr_tls_init(&g_current_thread_poller);
gpr_tls_init(&g_current_thread_worker);
grpc_wakeup_fd_global_init();
grpc_wakeup_fd_init(&grpc_global_wakeup_fd);
}