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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "task.h"
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#include "../uv.h"
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#include <math.h>
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#include <stdio.h>
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#define TARGET_CONNECTIONS 100
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#define WRITE_BUFFER_SIZE 8192
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#define MAX_SIMULTANEOUS_CONNECTS 100
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#define PRINT_STATS 0
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#define STATS_INTERVAL 1000 /* msec */
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#define STATS_COUNT 5
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static void do_write(uv_handle_t* handle);
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static void maybe_connect_some();
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static uv_req_t* req_alloc();
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static void req_free(uv_req_t* uv_req);
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static uv_buf buf_alloc(uv_handle_t* handle, size_t size);
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static void buf_free(uv_buf uv_buf);
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static struct sockaddr_in server_addr;
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static int64_t start_time;
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static int max_connect_socket = 0;
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static int read_sockets = 0;
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static int write_sockets = 0;
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static int64_t nrecv = 0;
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static int64_t nrecv_total = 0;
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static int64_t nsent = 0;
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static int64_t nsent_total = 0;
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static int stats_left = 0;
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static char write_buffer[WRITE_BUFFER_SIZE];
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static uv_handle_t read_handles[TARGET_CONNECTIONS];
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static uv_handle_t write_handles[TARGET_CONNECTIONS];
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static double gbit(int64_t bytes, int64_t passed_ms) {
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double gbits = ((double)bytes / (1024 * 1024 * 1024)) * 8;
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return gbits / ((double)passed_ms / 1000);
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}
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static void show_stats(uv_req_t *req, int64_t skew, int status) {
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int64_t msec = STATS_INTERVAL + skew;
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#if PRINT_STATS
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LOGF("connections: %d, read: %.1f gbit/s, write: %.1f gbit/s\n",
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read_sockets,
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gbit(nrecv, msec),
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gbit(nsent, msec));
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#endif
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/* Exit if the show is over */
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if (!--stats_left) {
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uv_update_time();
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int64_t diff = uv_now() - start_time;
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LOGF("pump_%d: %.1f gbit/s\n", read_sockets,
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gbit(nrecv_total, diff));
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exit(0);
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}
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/* Reset read and write counters */
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nrecv = 0;
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nsent = 0;
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uv_timeout(req, (STATS_INTERVAL - skew > 0)
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? STATS_INTERVAL - skew
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: 0);
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}
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static void start_stats_collection() {
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uv_req_t* req = req_alloc();
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int r;
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/* Show-stats timeout */
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stats_left = STATS_COUNT;
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uv_req_init(req, NULL, (void*)show_stats);
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r = uv_timeout(req, STATS_INTERVAL);
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ASSERT(r == 0);
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}
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void close_cb(uv_handle_t* handle, int status) {
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ASSERT(status == 0);
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}
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static void read_cb(uv_handle_t* handle, int bytes, uv_buf buf) {
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ASSERT(bytes >= 0);
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buf_free(buf);
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nrecv += bytes;
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nrecv_total += bytes;
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}
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static void write_cb(uv_req_t *req, int status) {
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uv_buf* buf = (uv_buf*) req->data;
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ASSERT(status == 0);
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req_free(req);
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nsent += sizeof write_buffer;
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nsent_total += sizeof write_buffer;
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do_write(req->handle);
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}
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static void do_write(uv_handle_t* handle) {
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uv_req_t* req;
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uv_buf buf;
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int r;
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buf.base = (char*) &write_buffer;
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buf.len = sizeof write_buffer;
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while (handle->write_queue_size == 0) {
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req = req_alloc();
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uv_req_init(req, handle, write_cb);
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r = uv_write(req, &buf, 1);
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ASSERT(r == 0);
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}
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}
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static void maybe_start_writing() {
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int i;
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if (read_sockets == TARGET_CONNECTIONS &&
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write_sockets == TARGET_CONNECTIONS) {
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start_stats_collection();
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/* Yay! start writing */
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for (i = 0; i < write_sockets; i++) {
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do_write(&write_handles[i]);
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}
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}
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}
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static void connect_cb(uv_req_t* req, int status) {
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if (status) LOG(uv_strerror(uv_last_error()));
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ASSERT(status == 0);
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write_sockets++;
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req_free(req);
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maybe_connect_some();
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maybe_start_writing();
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}
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static void do_connect(uv_handle_t* handle, struct sockaddr* addr) {
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uv_req_t* req;
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int r;
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r = uv_tcp_init(handle, close_cb, NULL);
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ASSERT(r == 0);
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req = req_alloc();
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uv_req_init(req, handle, connect_cb);
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r = uv_connect(req, addr);
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ASSERT(r == 0);
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}
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static void maybe_connect_some() {
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while (max_connect_socket < TARGET_CONNECTIONS &&
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max_connect_socket < write_sockets + MAX_SIMULTANEOUS_CONNECTS) {
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do_connect(&write_handles[max_connect_socket++],
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(struct sockaddr*) &server_addr);
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}
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}
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static void accept_cb(uv_handle_t* server) {
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uv_handle_t* handle;
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int r;
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ASSERT(read_sockets < TARGET_CONNECTIONS);
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handle = &read_handles[read_sockets];
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r = uv_accept(server, handle, close_cb, NULL);
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ASSERT(r == 0);
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r = uv_read_start(handle, read_cb);
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ASSERT(r == 0);
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read_sockets++;
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maybe_start_writing();
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}
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BENCHMARK_IMPL(pump) {
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uv_handle_t server;
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int r;
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uv_init(buf_alloc);
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/* Server */
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server_addr = uv_ip4_addr("127.0.0.1", TEST_PORT);
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r = uv_tcp_init(&server, close_cb, NULL);
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ASSERT(r == 0);
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r = uv_bind(&server, (struct sockaddr*) &server_addr);
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ASSERT(r == 0);
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r = uv_listen(&server, TARGET_CONNECTIONS, accept_cb);
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ASSERT(r == 0);
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uv_update_time();
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start_time = uv_now();
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/* Start making connections */
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maybe_connect_some();
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uv_run();
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return 0;
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}
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/*
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* Request allocator
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*/
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typedef struct req_list_s {
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uv_req_t uv_req;
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struct req_list_s* next;
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} req_list_t;
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static req_list_t* req_freelist = NULL;
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static uv_req_t* req_alloc() {
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req_list_t* req;
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req = req_freelist;
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if (req != NULL) {
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req_freelist = req->next;
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return (uv_req_t*) req;
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}
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req = (req_list_t*) malloc(sizeof *req);
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return (uv_req_t*) req;
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}
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static void req_free(uv_req_t* uv_req) {
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req_list_t* req = (req_list_t*) uv_req;
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req->next = req_freelist;
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req_freelist = req;
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}
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/*
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* Buffer allocator
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*/
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typedef struct buf_list_s {
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uv_buf uv_buf;
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struct buf_list_s* next;
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} buf_list_t;
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static buf_list_t* buf_freelist = NULL;
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static uv_buf buf_alloc(uv_handle_t* handle, size_t size) {
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buf_list_t* buf;
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buf = buf_freelist;
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if (buf != NULL) {
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buf_freelist = buf->next;
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return buf->uv_buf;
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}
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buf = (buf_list_t*) malloc(size + sizeof *buf);
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buf->uv_buf.len = (unsigned int)size;
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buf->uv_buf.base = ((char*) buf) + sizeof *buf;
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return buf->uv_buf;
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}
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static void buf_free(uv_buf uv_buf) {
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buf_list_t* buf = (buf_list_t*) (uv_buf.base - sizeof *buf);
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buf->next = buf_freelist;
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buf_freelist = buf;
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}
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