From 7212c233e84f199742bb98176eef9f8d15ccaabb Mon Sep 17 00:00:00 2001 From: Craig Tiller Date: Wed, 6 Jul 2016 13:11:09 -0700 Subject: [PATCH] Fix mutex loop --- src/core/lib/iomgr/ev_epoll_linux.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c index 0c42d6e99a9..30f03c17bc3 100644 --- a/src/core/lib/iomgr/ev_epoll_linux.c +++ b/src/core/lib/iomgr/ev_epoll_linux.c @@ -1533,6 +1533,7 @@ static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, polling_island *pi_new = NULL; +retry: /* 1) If fd->polling_island and pollset->polling_island are both non-NULL and * equal, do nothing. * 2) If fd->polling_island and pollset->polling_island are both NULL, create @@ -1550,7 +1551,12 @@ static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, if (fd->polling_island == pollset->polling_island) { pi_new = fd->polling_island; if (pi_new == NULL) { + gpr_mu_unlock(&fd->mu); pi_new = polling_island_create(exec_ctx, fd, &error); + gpr_mu_lock(&fd->mu); + if (fd->polling_island != NULL) { + goto retry; + } GRPC_POLLING_TRACE( "pollset_add_fd: Created new polling island. pi_new: %p (fd: %d, "