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Diffstat (limited to '3rdparty/libuv/test/benchmark-async.c')
-rw-r--r-- | 3rdparty/libuv/test/benchmark-async.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/3rdparty/libuv/test/benchmark-async.c b/3rdparty/libuv/test/benchmark-async.c new file mode 100644 index 00000000000..e44165f2b81 --- /dev/null +++ b/3rdparty/libuv/test/benchmark-async.c @@ -0,0 +1,141 @@ +/* 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 "task.h" +#include "uv.h" + +#include <stdio.h> +#include <stdlib.h> + +#define NUM_PINGS (1000 * 1000) + +struct ctx { + uv_loop_t loop; + uv_thread_t thread; + uv_async_t main_async; /* wake up main thread */ + uv_async_t worker_async; /* wake up worker */ + unsigned int nthreads; + unsigned int main_sent; + unsigned int main_seen; + unsigned int worker_sent; + unsigned int worker_seen; +}; + + +static void worker_async_cb(uv_async_t* handle) { + struct ctx* ctx = container_of(handle, struct ctx, worker_async); + + ASSERT(0 == uv_async_send(&ctx->main_async)); + ctx->worker_sent++; + ctx->worker_seen++; + + if (ctx->worker_sent >= NUM_PINGS) + uv_close((uv_handle_t*) &ctx->worker_async, NULL); +} + + +static void main_async_cb(uv_async_t* handle) { + struct ctx* ctx = container_of(handle, struct ctx, main_async); + + ASSERT(0 == uv_async_send(&ctx->worker_async)); + ctx->main_sent++; + ctx->main_seen++; + + if (ctx->main_sent >= NUM_PINGS) + uv_close((uv_handle_t*) &ctx->main_async, NULL); +} + + +static void worker(void* arg) { + struct ctx* ctx = arg; + ASSERT(0 == uv_async_send(&ctx->main_async)); + ASSERT(0 == uv_run(&ctx->loop, UV_RUN_DEFAULT)); + uv_loop_close(&ctx->loop); +} + + +static int test_async(int nthreads) { + struct ctx* threads; + struct ctx* ctx; + uint64_t time; + int i; + + threads = calloc(nthreads, sizeof(threads[0])); + ASSERT(threads != NULL); + + for (i = 0; i < nthreads; i++) { + ctx = threads + i; + ctx->nthreads = nthreads; + ASSERT(0 == uv_loop_init(&ctx->loop)); + ASSERT(0 == uv_async_init(&ctx->loop, &ctx->worker_async, worker_async_cb)); + ASSERT(0 == uv_async_init(uv_default_loop(), + &ctx->main_async, + main_async_cb)); + ASSERT(0 == uv_thread_create(&ctx->thread, worker, ctx)); + } + + time = uv_hrtime(); + + ASSERT(0 == uv_run(uv_default_loop(), UV_RUN_DEFAULT)); + + for (i = 0; i < nthreads; i++) + ASSERT(0 == uv_thread_join(&threads[i].thread)); + + time = uv_hrtime() - time; + + for (i = 0; i < nthreads; i++) { + ctx = threads + i; + ASSERT(ctx->worker_sent == NUM_PINGS); + ASSERT(ctx->worker_seen == NUM_PINGS); + ASSERT(ctx->main_sent == (unsigned int) NUM_PINGS); + ASSERT(ctx->main_seen == (unsigned int) NUM_PINGS); + } + + printf("async%d: %.2f sec (%s/sec)\n", + nthreads, + time / 1e9, + fmt(NUM_PINGS / (time / 1e9))); + + free(threads); + + MAKE_VALGRIND_HAPPY(); + return 0; +} + + +BENCHMARK_IMPL(async1) { + return test_async(1); +} + + +BENCHMARK_IMPL(async2) { + return test_async(2); +} + + +BENCHMARK_IMPL(async4) { + return test_async(4); +} + + +BENCHMARK_IMPL(async8) { + return test_async(8); +} |