| /* 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. |
| */ |
| |
| /* This benchmark spawns itself 1000 times. */ |
| |
| #include "task.h" |
| #include "uv.h" |
| |
| static uv_loop_t* loop; |
| |
| static int N = 1000; |
| static int done; |
| |
| static uv_process_t process; |
| static uv_process_options_t options; |
| static char exepath[1024]; |
| static size_t exepath_size = 1024; |
| static char* args[3]; |
| static uv_pipe_t out; |
| |
| #define OUTPUT_SIZE 1024 |
| static char output[OUTPUT_SIZE]; |
| static int output_used; |
| |
| static int process_open; |
| static int pipe_open; |
| |
| |
| static void spawn(void); |
| |
| |
| static void maybe_spawn(void) { |
| if (process_open == 0 && pipe_open == 0) { |
| done++; |
| if (done < N) { |
| spawn(); |
| } |
| } |
| } |
| |
| |
| static void process_close_cb(uv_handle_t* handle) { |
| ASSERT(process_open == 1); |
| process_open = 0; |
| maybe_spawn(); |
| } |
| |
| |
| static void exit_cb(uv_process_t* process, int exit_status, int term_signal) { |
| ASSERT(exit_status == 42); |
| ASSERT(term_signal == 0); |
| uv_close((uv_handle_t*)process, process_close_cb); |
| } |
| |
| |
| static uv_buf_t on_alloc(uv_handle_t* handle, size_t suggested_size) { |
| uv_buf_t buf; |
| buf.base = output + output_used; |
| buf.len = OUTPUT_SIZE - output_used; |
| return buf; |
| } |
| |
| |
| static void pipe_close_cb(uv_handle_t* pipe) { |
| ASSERT(pipe_open == 1); |
| pipe_open = 0; |
| maybe_spawn(); |
| } |
| |
| |
| static void on_read(uv_stream_t* pipe, ssize_t nread, uv_buf_t buf) { |
| uv_err_t err = uv_last_error(loop); |
| |
| if (nread > 0) { |
| ASSERT(pipe_open == 1); |
| output_used += nread; |
| } else if (nread < 0) { |
| if (err.code == UV_EOF) { |
| uv_close((uv_handle_t*)pipe, pipe_close_cb); |
| } |
| } |
| } |
| |
| |
| static void spawn(void) { |
| uv_stdio_container_t stdio[2]; |
| int r; |
| |
| ASSERT(process_open == 0); |
| ASSERT(pipe_open == 0); |
| |
| args[0] = exepath; |
| args[1] = "spawn_helper"; |
| args[2] = NULL; |
| options.file = exepath; |
| options.args = args; |
| options.exit_cb = exit_cb; |
| |
| uv_pipe_init(loop, &out, 0); |
| |
| options.stdio = stdio; |
| options.stdio_count = 2; |
| options.stdio[0].flags = UV_IGNORE; |
| options.stdio[1].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE; |
| options.stdio[1].data.stream = (uv_stream_t*)&out; |
| |
| r = uv_spawn(loop, &process, options); |
| ASSERT(r == 0); |
| |
| process_open = 1; |
| pipe_open = 1; |
| output_used = 0; |
| |
| r = uv_read_start((uv_stream_t*) &out, on_alloc, on_read); |
| ASSERT(r == 0); |
| } |
| |
| |
| BENCHMARK_IMPL(spawn) { |
| int r; |
| static int64_t start_time, end_time; |
| |
| loop = uv_default_loop(); |
| |
| r = uv_exepath(exepath, &exepath_size); |
| ASSERT(r == 0); |
| exepath[exepath_size] = '\0'; |
| |
| uv_update_time(loop); |
| start_time = uv_now(loop); |
| |
| spawn(); |
| |
| r = uv_run(loop, UV_RUN_DEFAULT); |
| ASSERT(r == 0); |
| |
| uv_update_time(loop); |
| end_time = uv_now(loop); |
| |
| LOGF("spawn: %.0f spawns/s\n", |
| (double) N / (double) (end_time - start_time) * 1000.0); |
| |
| MAKE_VALGRIND_HAPPY(); |
| return 0; |
| } |