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-rw-r--r--3rdparty/libuv/test/benchmark-spawn.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/3rdparty/libuv/test/benchmark-spawn.c b/3rdparty/libuv/test/benchmark-spawn.c
new file mode 100644
index 00000000000..ed9ad608f37
--- /dev/null
+++ b/3rdparty/libuv/test/benchmark-spawn.c
@@ -0,0 +1,164 @@
+/* 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,
+ int64_t exit_status,
+ int term_signal) {
+ ASSERT(exit_status == 42);
+ ASSERT(term_signal == 0);
+ uv_close((uv_handle_t*)process, process_close_cb);
+}
+
+
+static void 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;
+}
+
+
+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, const uv_buf_t* buf) {
+ if (nread > 0) {
+ ASSERT(pipe_open == 1);
+ output_used += nread;
+ } else if (nread < 0) {
+ if (nread == 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);
+
+ fprintf(stderr, "spawn: %.0f spawns/s\n",
+ (double) N / (double) (end_time - start_time) * 1000.0);
+ fflush(stderr);
+
+ MAKE_VALGRIND_HAPPY();
+ return 0;
+}