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-rw-r--r--src/core/lib/iomgr/wakeup_fd_eventfd.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/core/lib/iomgr/wakeup_fd_eventfd.c b/src/core/lib/iomgr/wakeup_fd_eventfd.c
index 667b4a5f90..95f6102330 100644
--- a/src/core/lib/iomgr/wakeup_fd_eventfd.c
+++ b/src/core/lib/iomgr/wakeup_fd_eventfd.c
@@ -84,8 +84,10 @@ static void eventfd_destroy(grpc_wakeup_fd* fd_info) {
}
static int eventfd_check_availability(void) {
- /* TODO(klempner): Actually check if eventfd is available */
- return 1;
+ const int efd = eventfd(0, 0);
+ const int is_available = efd >= 0;
+ if (is_available) close(efd);
+ return is_available;
}
const grpc_wakeup_fd_vtable grpc_specialized_wakeup_fd_vtable = {