/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#include <stdio.h>

#include <stdlib.h>

#define WRITE_REQ_DATA  "Hello, world."

#define NUM_WRITE_REQS  (1000 * 1000)

typedef struct {

  uv_write_t req;

  uv_buf_t buf;

} write_req;

static write_req* write_reqs;

static uv_tcp_t tcp_client;

static uv_connect_t connect_req;

static uv_shutdown_t shutdown_req;

static int shutdown_cb_called = 0;

static int connect_cb_called = 0;

static int write_cb_called = 0;

static int close_cb_called = 0;

static void connect_cb(uv_connect_t* req, int status);

static void write_cb(uv_write_t* req, int status);

static void shutdown_cb(uv_shutdown_t* req, int status);

static void close_cb(uv_handle_t* handle);

static void connect_cb(uv_connect_t* req, int status) {

  write_req* w;

  int i;

  int r;

  ASSERT(req->handle == (uv_stream_t*)&tcp_client);

  for (i = 0; i < NUM_WRITE_REQS; i++) {

    w = &write_reqs[i];

    r = uv_write(&w->req, req->handle, &w->buf, 1, write_cb);

    ASSERT(r == 0);

  }

  r = uv_shutdown(&shutdown_req, req->handle, shutdown_cb);

  ASSERT(r == 0);

  connect_cb_called++;

}

static void write_cb(uv_write_t* req, int status) {

  ASSERT(req != NULL);

  ASSERT(status == 0);

  write_cb_called++;

}

static void shutdown_cb(uv_shutdown_t* req, int status) {

  ASSERT(req->handle == (uv_stream_t*)&tcp_client);

  ASSERT(req->handle->write_queue_size == 0);

  uv_close((uv_handle_t*)req->handle, close_cb);

  free(write_reqs);

  shutdown_cb_called++;

}

static void close_cb(uv_handle_t* handle) {

  ASSERT(handle == (uv_handle_t*)&tcp_client);

  close_cb_called++;

}

BENCHMARK_IMPL(tcp_write_batch) {

  struct sockaddr_in addr;

  uv_loop_t* loop;

  uint64_t start;

  uint64_t stop;

  int i;

  int r;

  write_reqs = malloc(sizeof(*write_reqs) * NUM_WRITE_REQS);

  ASSERT(write_reqs != NULL);

  /* Prepare the data to write out. */

  for (i = 0; i < NUM_WRITE_REQS; i++) {

    write_reqs[i].buf = uv_buf_init(WRITE_REQ_DATA,

                                    sizeof(WRITE_REQ_DATA) - 1);

  }

  loop = uv_default_loop();

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  r = uv_tcp_init(loop, &tcp_client);

  ASSERT(r == 0);

  r = uv_tcp_connect(&connect_req,

                     &tcp_client,

                     (const struct sockaddr*) &addr,

                     connect_cb);

  ASSERT(r == 0);

  start = uv_hrtime();

  r = uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(r == 0);

  stop = uv_hrtime();

  ASSERT(connect_cb_called == 1);

  ASSERT(write_cb_called == NUM_WRITE_REQS);

  ASSERT(shutdown_cb_called == 1);

  ASSERT(close_cb_called == 1);

  printf("%ld write requests in %.2fs.\n",

         (long)NUM_WRITE_REQS,

         (stop - start) / 1e9);

  MAKE_VALGRIND_HAPPY();

  return 0;

}