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bench: add 'million async handles' benchmark
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/* 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. | ||
*/ | ||
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#include "task.h" | ||
#include "uv.h" | ||
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struct async_container { | ||
unsigned async_events; | ||
unsigned handles_seen; | ||
uv_async_t async_handles[1024 * 1024]; | ||
}; | ||
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static volatile int done; | ||
static uv_thread_t thread_id; | ||
static struct async_container* container; | ||
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static unsigned fastrand(void) { | ||
static unsigned g = 0; | ||
g = g * 214013 + 2531011; | ||
return g; | ||
} | ||
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static void thread_cb(void* arg) { | ||
unsigned i; | ||
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while (done == 0) { | ||
i = fastrand() % ARRAY_SIZE(container->async_handles); | ||
uv_async_send(container->async_handles + i); | ||
} | ||
} | ||
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static void async_cb(uv_async_t* handle, int status) { | ||
container->async_events++; | ||
handle->data = handle; | ||
} | ||
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static void timer_cb(uv_timer_t* handle, int status) { | ||
unsigned i; | ||
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done = 1; | ||
ASSERT(0 == uv_thread_join(&thread_id)); | ||
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for (i = 0; i < ARRAY_SIZE(container->async_handles); i++) { | ||
uv_async_t* handle = container->async_handles + i; | ||
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if (handle->data != NULL) | ||
container->handles_seen++; | ||
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uv_close((uv_handle_t*) handle, NULL); | ||
} | ||
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uv_close((uv_handle_t*) handle, NULL); | ||
} | ||
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BENCHMARK_IMPL(million_async) { | ||
uv_timer_t timer_handle; | ||
uv_async_t* handle; | ||
uv_loop_t* loop; | ||
int timeout; | ||
unsigned i; | ||
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loop = uv_default_loop(); | ||
timeout = 5000; | ||
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container = malloc(sizeof(*container)); | ||
ASSERT(container != NULL); | ||
container->async_events = 0; | ||
container->handles_seen = 0; | ||
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for (i = 0; i < ARRAY_SIZE(container->async_handles); i++) { | ||
handle = container->async_handles + i; | ||
ASSERT(0 == uv_async_init(loop, handle, async_cb)); | ||
handle->data = NULL; | ||
} | ||
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ASSERT(0 == uv_timer_init(loop, &timer_handle)); | ||
ASSERT(0 == uv_timer_start(&timer_handle, timer_cb, timeout, 0)); | ||
ASSERT(0 == uv_thread_create(&thread_id, thread_cb, NULL)); | ||
ASSERT(0 == uv_run(loop)); | ||
printf("%s async events in %.1f seconds (%s/s, %s unique handles seen)\n", | ||
fmt(container->async_events), | ||
timeout / 1000., | ||
fmt(container->async_events / (timeout / 1000.)), | ||
fmt(container->handles_seen)); | ||
free(container); | ||
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MAKE_VALGRIND_HAPPY(); | ||
return 0; | ||
} |
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