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