From 43b55221e4a109f9dc6845c2c081dd5ea17249ae Mon Sep 17 00:00:00 2001
From: Vijay Pai <vpai@google.com>
Date: Mon, 18 Sep 2017 15:03:53 -0700
Subject: Cancel outstanding streams when shutting down the client

---
 test/cpp/qps/client_async.cc | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'test')

diff --git a/test/cpp/qps/client_async.cc b/test/cpp/qps/client_async.cc
index 1a4438047d..f5807da81e 100644
--- a/test/cpp/qps/client_async.cc
+++ b/test/cpp/qps/client_async.cc
@@ -56,6 +56,7 @@ class ClientRpcContext {
   }
 
   virtual void Start(CompletionQueue* cq, const ClientConfig& config) = 0;
+  virtual void TryCancel() = 0;
 };
 
 template <class RequestType, class ResponseType>
@@ -110,6 +111,7 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
                                                 prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -142,8 +144,6 @@ class ClientRpcContextUnaryImpl : public ClientRpcContext {
   }
 };
 
-typedef std::forward_list<ClientRpcContext*> context_list;
-
 template <class StubType, class RequestType>
 class AsyncClient : public ClientImpl<StubType, RequestType> {
   // Specify which protected members we are using since there is no
@@ -247,6 +247,7 @@ class AsyncClient : public ClientImpl<StubType, RequestType> {
       // this thread isn't supposed to shut down
       std::lock_guard<std::mutex> l(shutdown_state_[thread_idx]->mutex);
       if (shutdown_state_[thread_idx]->shutdown) {
+        ctx->TryCancel();
         delete ctx;
         return true;
       }
@@ -388,6 +389,7 @@ class ClientRpcContextStreamingPingPongImpl : public ClientRpcContext {
         stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq, messages_per_stream_);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -527,6 +529,7 @@ class ClientRpcContextStreamingFromClientImpl : public ClientRpcContext {
         stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -644,6 +647,7 @@ class ClientRpcContextStreamingFromServerImpl : public ClientRpcContext {
         stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
@@ -786,6 +790,7 @@ class ClientRpcContextGenericStreamingImpl : public ClientRpcContext {
         stub_, req_, next_issue_, prepare_req_, callback_);
     clone->StartInternal(cq, messages_per_stream_);
   }
+  void TryCancel() override { context_.TryCancel(); }
 
  private:
   grpc::ClientContext context_;
-- 
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