Directly allocate unsent message instead of preparing them first

test/brpc_h2_unsent_message_unittest.cpp

@@ -36,45 +36,37 @@ TEST(H2UnsentMessage, request_throughput) {
     ctx->_last_client_stream_id = 0;
     ctx->_remote_window_left = brpc::H2Settings::MAX_WINDOW_SIZE;
 
-    int64_t ntotal = 1000000;
+    int64_t ntotal = 5000000;
 
     // calc H2UnsentRequest throughput
-    std::vector<brpc::policy::H2UnsentRequest*> req_msgs;
-    req_msgs.resize(ntotal);
-    for (int i = 0; i < ntotal; ++i) {
-        req_msgs[i] = brpc::policy::H2UnsentRequest::New(&cntl);
-    }
     butil::IOBuf dummy_buf;
     ProfilerStart("h2_unsent_req.prof");
     int64_t start_us = butil::gettimeofday_us();
     for (int i = 0; i < ntotal; ++i) {
-        req_msgs[i]->AppendAndDestroySelf(&dummy_buf, h2_client_sock.get());
+        brpc::policy::H2UnsentRequest* req = brpc::policy::H2UnsentRequest::New(&cntl);
+        req->AppendAndDestroySelf(&dummy_buf, h2_client_sock.get());
     }
     int64_t end_us = butil::gettimeofday_us();
     ProfilerStop();
     int64_t elapsed = end_us - start_us;
     LOG(INFO) << "H2UnsentRequest average qps="
         << (ntotal * 1000000L) / elapsed << "/s, data throughput="
-        << dummy_buf.size() * 1000000L / elapsed;
-    req_msgs.clear();
+        << dummy_buf.size() * 1000000L / elapsed << "/s";
 
     // calc H2UnsentResponse throughput
-    std::vector<brpc::policy::H2UnsentResponse*> res_msgs;
-    res_msgs.resize(ntotal);
-    for (int i = 0; i < ntotal; ++i) {
-        cntl.http_response().set_content_type("text/plain");
-        cntl.response_attachment().append("0123456789abcedef");
-        res_msgs[i] = brpc::policy::H2UnsentResponse::New(&cntl, 0, false);
-    }
     dummy_buf.clear();
     start_us = butil::gettimeofday_us();
     for (int i = 0; i < ntotal; ++i) {
-        res_msgs[i]->AppendAndDestroySelf(&dummy_buf, h2_client_sock.get());
+        // H2UnsentResponse::New would release cntl.http_response() and swap
+        // cntl.response_attachment()
+        cntl.http_response().set_content_type("text/plain");
+        cntl.response_attachment().append("0123456789abcedef");
+        brpc::policy::H2UnsentResponse* res = brpc::policy::H2UnsentResponse::New(&cntl, 0, false);
+        res->AppendAndDestroySelf(&dummy_buf, h2_client_sock.get());
     }
     end_us = butil::gettimeofday_us();
     elapsed = end_us - start_us;
     LOG(INFO) << "H2UnsentResponse average qps="
         << (ntotal * 1000000L) / elapsed << "/s, data throughput="
-        << dummy_buf.size() * 1000000L / elapsed;
-    res_msgs.clear();
+        << dummy_buf.size() * 1000000L / elapsed << "/s";
 }