mirror of
https://github.com/urbit/shrub.git
synced 2024-12-01 22:55:03 +03:00
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/* 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 <stdio.h>
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#include <stdlib.h>
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#define NUM_PINGS (1000 * 1000)
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struct ctx {
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uv_loop_t* loop;
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uv_thread_t thread;
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uv_async_t main_async; /* wake up main thread */
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uv_async_t worker_async; /* wake up worker */
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unsigned int nthreads;
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unsigned int main_sent;
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unsigned int main_seen;
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unsigned int worker_sent;
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unsigned int worker_seen;
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};
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static void worker_async_cb(uv_async_t* handle, int status) {
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struct ctx* ctx = container_of(handle, struct ctx, worker_async);
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ASSERT(0 == uv_async_send(&ctx->main_async));
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ctx->worker_sent++;
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ctx->worker_seen++;
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if (ctx->worker_sent >= NUM_PINGS)
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uv_close((uv_handle_t*) &ctx->worker_async, NULL);
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}
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static void main_async_cb(uv_async_t* handle, int status) {
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struct ctx* ctx = container_of(handle, struct ctx, main_async);
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ASSERT(0 == uv_async_send(&ctx->worker_async));
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ctx->main_sent++;
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ctx->main_seen++;
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if (ctx->main_sent >= NUM_PINGS)
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uv_close((uv_handle_t*) &ctx->main_async, NULL);
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}
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static void worker(void* arg) {
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struct ctx* ctx = arg;
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ASSERT(0 == uv_async_send(&ctx->main_async));
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ASSERT(0 == uv_run(ctx->loop, UV_RUN_DEFAULT));
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}
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static int test_async(int nthreads) {
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struct ctx* threads;
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struct ctx* ctx;
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uint64_t time;
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int i;
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threads = calloc(nthreads, sizeof(threads[0]));
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ASSERT(threads != NULL);
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for (i = 0; i < nthreads; i++) {
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ctx = threads + i;
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ctx->nthreads = nthreads;
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ctx->loop = uv_loop_new();
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ASSERT(ctx->loop != NULL);
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ASSERT(0 == uv_async_init(ctx->loop, &ctx->worker_async, worker_async_cb));
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ASSERT(0 == uv_async_init(uv_default_loop(), &ctx->main_async, main_async_cb));
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ASSERT(0 == uv_thread_create(&ctx->thread, worker, ctx));
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}
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time = uv_hrtime();
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ASSERT(0 == uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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for (i = 0; i < nthreads; i++)
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ASSERT(0 == uv_thread_join(&threads[i].thread));
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time = uv_hrtime() - time;
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for (i = 0; i < nthreads; i++) {
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ctx = threads + i;
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ASSERT(ctx->worker_sent == NUM_PINGS);
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ASSERT(ctx->worker_seen == NUM_PINGS);
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ASSERT(ctx->main_sent == (unsigned int) NUM_PINGS);
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ASSERT(ctx->main_seen == (unsigned int) NUM_PINGS);
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}
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printf("async%d: %.2f sec (%s/sec)\n",
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nthreads,
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time / 1e9,
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fmt(NUM_PINGS / (time / 1e9)));
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free(threads);
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MAKE_VALGRIND_HAPPY();
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return 0;
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}
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BENCHMARK_IMPL(async1) {
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return test_async(1);
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}
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BENCHMARK_IMPL(async2) {
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return test_async(2);
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}
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BENCHMARK_IMPL(async4) {
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return test_async(4);
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}
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BENCHMARK_IMPL(async8) {
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return test_async(8);
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}
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