From 7235091dc26918f1b112d706786ca62b6ca17b45 Mon Sep 17 00:00:00 2001
From: Vijay Pai <vpai@google.com>
Date: Thu, 5 Sep 2019 10:41:32 -0700
Subject: [PATCH] Don't start AuthMetadataProcessor threadpool for non-blocking
 processor

---
 src/cpp/server/secure_server_credentials.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/cpp/server/secure_server_credentials.h b/src/cpp/server/secure_server_credentials.h
index 24b133cf7f0..cc5ed1e1f92 100644
--- a/src/cpp/server/secure_server_credentials.h
+++ b/src/cpp/server/secure_server_credentials.h
@@ -46,7 +46,11 @@ class AuthMetadataProcessorAyncWrapper final {
 
   AuthMetadataProcessorAyncWrapper(
       const std::shared_ptr<AuthMetadataProcessor>& processor)
-      : thread_pool_(CreateDefaultThreadPool()), processor_(processor) {}
+      : processor_(processor) {
+    if (processor && processor->IsBlocking()) {
+      thread_pool_.reset(CreateDefaultThreadPool());
+    }
+  }
 
  private:
   void InvokeProcessor(grpc_auth_context* context, const grpc_metadata* md,