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Diffstat (limited to 'src/core/lib/iomgr/tcp_posix.cc')
-rw-r--r--src/core/lib/iomgr/tcp_posix.cc9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/tcp_posix.cc b/src/core/lib/iomgr/tcp_posix.cc
index ac1e919acb..4aad83915f 100644
--- a/src/core/lib/iomgr/tcp_posix.cc
+++ b/src/core/lib/iomgr/tcp_posix.cc
@@ -204,6 +204,15 @@ static void drop_uncovered(grpc_tcp* tcp) {
GPR_ASSERT(old_count != 1);
}
+/* gRPC API considers a Write operation to be done the moment it clears ‘flow
+ control’ i.e., and not necessarily sent on the wire. This means that the
+ application MAY NOT call `grpc_completion_queue_next/pluck` in a timely
+ manner when its `Write()` API is acked.
+
+ We need to ensure that the fd is 'covered' (i.e being monitored by some
+ polling thread and progress is made) and hence add it to a backup poller
+ here */
+
static void cover_self(grpc_tcp* tcp) {
backup_poller* p;
gpr_atm old_count =