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119 lines
3.2 KiB
119 lines
3.2 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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#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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#define ACCESS_ONCE(type, var) (*(volatile type*) &(var)) |
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static unsigned int callbacks; |
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static volatile int done; |
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static const char running[] = "running"; |
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static const char stop[] = "stop"; |
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static const char stopped[] = "stopped"; |
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static void async_cb(uv_async_t* handle) { |
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if (++callbacks == NUM_PINGS) { |
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/* Tell the pummel thread to stop. */ |
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ACCESS_ONCE(const char*, handle->data) = stop; |
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/* Wait for the pummel thread to acknowledge that it has stoppped. */ |
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while (ACCESS_ONCE(const char*, handle->data) != stopped) |
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uv_sleep(0); |
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uv_close((uv_handle_t*) handle, NULL); |
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} |
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} |
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static void pummel(void* arg) { |
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uv_async_t* handle = (uv_async_t*) arg; |
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while (ACCESS_ONCE(const char*, handle->data) == running) |
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uv_async_send(handle); |
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/* Acknowledge that we've seen handle->data change. */ |
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ACCESS_ONCE(const char*, handle->data) = stopped; |
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} |
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static int test_async_pummel(int nthreads) { |
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uv_thread_t* tids; |
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uv_async_t handle; |
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uint64_t time; |
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int i; |
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tids = calloc(nthreads, sizeof(tids[0])); |
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ASSERT(tids != NULL); |
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ASSERT(0 == uv_async_init(uv_default_loop(), &handle, async_cb)); |
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ACCESS_ONCE(const char*, handle.data) = running; |
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for (i = 0; i < nthreads; i++) |
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ASSERT(0 == uv_thread_create(tids + i, pummel, &handle)); |
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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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time = uv_hrtime() - time; |
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done = 1; |
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for (i = 0; i < nthreads; i++) |
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ASSERT(0 == uv_thread_join(tids + i)); |
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printf("async_pummel_%d: %s callbacks in %.2f seconds (%s/sec)\n", |
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nthreads, |
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fmt(callbacks), |
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time / 1e9, |
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fmt(callbacks / (time / 1e9))); |
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free(tids); |
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MAKE_VALGRIND_HAPPY(); |
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return 0; |
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} |
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BENCHMARK_IMPL(async_pummel_1) { |
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return test_async_pummel(1); |
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} |
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BENCHMARK_IMPL(async_pummel_2) { |
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return test_async_pummel(2); |
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} |
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BENCHMARK_IMPL(async_pummel_4) { |
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return test_async_pummel(4); |
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} |
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BENCHMARK_IMPL(async_pummel_8) { |
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return test_async_pummel(8); |
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}
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