Initial checkin of gRPC to third_party/

third_party/grpc/test/cpp/qps/client_sync.cc

Index: third_party/grpc/test/cpp/qps/client_sync.cc
diff --git a/third_party/grpc/test/cpp/qps/client_sync.cc b/third_party/grpc/test/cpp/qps/client_sync.cc
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+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <cassert>
+#include <chrono>
+#include <memory>
+#include <mutex>
+#include <sstream>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <gflags/gflags.h>
+#include <grpc++/channel.h>
+#include <grpc++/client_context.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/histogram.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <gtest/gtest.h>
+
+#include "src/core/profiling/timers.h"
+#include "src/proto/grpc/testing/services.grpc.pb.h"
+#include "test/cpp/qps/client.h"
+#include "test/cpp/qps/histogram.h"
+#include "test/cpp/qps/interarrival.h"
+#include "test/cpp/qps/usage_timer.h"
+
+namespace grpc {
+namespace testing {
+
+static std::unique_ptr<BenchmarkService::Stub> BenchmarkStubCreator(
+    std::shared_ptr<Channel> ch) {
+  return BenchmarkService::NewStub(ch);
+}
+
+class SynchronousClient
+    : public ClientImpl<BenchmarkService::Stub, SimpleRequest> {
+ public:
+  SynchronousClient(const ClientConfig& config)
+      : ClientImpl<BenchmarkService::Stub, SimpleRequest>(
+            config, BenchmarkStubCreator) {
+    num_threads_ =
+        config.outstanding_rpcs_per_channel() * config.client_channels();
+    responses_.resize(num_threads_);
+    SetupLoadTest(config, num_threads_);
+  }
+
+  virtual ~SynchronousClient(){};
+
+ protected:
+  void WaitToIssue(int thread_idx) {
+    if (!closed_loop_) {
+      gpr_sleep_until(NextIssueTime(thread_idx));
+    }
+  }
+
+  size_t num_threads_;
+  std::vector<SimpleResponse> responses_;
+};
+
+class SynchronousUnaryClient GRPC_FINAL : public SynchronousClient {
+ public:
+  SynchronousUnaryClient(const ClientConfig& config)
+      : SynchronousClient(config) {
+    StartThreads(num_threads_);
+  }
+  ~SynchronousUnaryClient() { EndThreads(); }
+
+  bool ThreadFunc(Histogram* histogram, size_t thread_idx) GRPC_OVERRIDE {
+    WaitToIssue(thread_idx);
+    auto* stub = channels_[thread_idx % channels_.size()].get_stub();
+    double start = UsageTimer::Now();
+    GPR_TIMER_SCOPE("SynchronousUnaryClient::ThreadFunc", 0);
+    grpc::ClientContext context;
+    grpc::Status s =
+        stub->UnaryCall(&context, request_, &responses_[thread_idx]);
+    histogram->Add((UsageTimer::Now() - start) * 1e9);
+    return s.ok();
+  }
+};
+
+class SynchronousStreamingClient GRPC_FINAL : public SynchronousClient {
+ public:
+  SynchronousStreamingClient(const ClientConfig& config)
+      : SynchronousClient(config) {
+    context_ = new grpc::ClientContext[num_threads_];
+    stream_ = new std::unique_ptr<
+        grpc::ClientReaderWriter<SimpleRequest, SimpleResponse>>[num_threads_];
+    for (size_t thread_idx = 0; thread_idx < num_threads_; thread_idx++) {
+      auto* stub = channels_[thread_idx % channels_.size()].get_stub();
+      stream_[thread_idx] = stub->StreamingCall(&context_[thread_idx]);
+    }
+    StartThreads(num_threads_);
+  }
+  ~SynchronousStreamingClient() {
+    EndThreads();
+    for (auto stream = &stream_[0]; stream != &stream_[num_threads_];
+         stream++) {
+      if (*stream) {
+        (*stream)->WritesDone();
+        EXPECT_TRUE((*stream)->Finish().ok());
+      }
+    }
+    delete[] stream_;
+    delete[] context_;
+  }
+
+  bool ThreadFunc(Histogram* histogram, size_t thread_idx) GRPC_OVERRIDE {
+    WaitToIssue(thread_idx);
+    GPR_TIMER_SCOPE("SynchronousStreamingClient::ThreadFunc", 0);
+    double start = UsageTimer::Now();
+    if (stream_[thread_idx]->Write(request_) &&
+        stream_[thread_idx]->Read(&responses_[thread_idx])) {
+      histogram->Add((UsageTimer::Now() - start) * 1e9);
+      return true;
+    }
+    return false;
+  }
+
+ private:
+  // These are both conceptually std::vector but cannot be for old compilers
+  // that expect contained classes to support copy constructors
+  grpc::ClientContext* context_;
+  std::unique_ptr<grpc::ClientReaderWriter<SimpleRequest, SimpleResponse>>*
+      stream_;
+};
+
+std::unique_ptr<Client> CreateSynchronousUnaryClient(
+    const ClientConfig& config) {
+  return std::unique_ptr<Client>(new SynchronousUnaryClient(config));
+}
+std::unique_ptr<Client> CreateSynchronousStreamingClient(
+    const ClientConfig& config) {
+  return std::unique_ptr<Client>(new SynchronousStreamingClient(config));
+}
+
+}  // namespace testing
+}  // namespace grpc