mirror of
https://github.com/libuv/libuv
synced 2025-03-28 21:13:16 +00:00
e02642cf3b
The worker pool calls all callbacks locally within the queue. So the value of nevents doesn't properly reflect that case. Increase the number of events directly from the worker pool's callback to correct this. In order to properly determine if the events_waiting counter needs to be incremented, store the timeout value at the time the event provider was called.
393 lines
11 KiB
C
393 lines
11 KiB
C
/* Copyright libuv project 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 "uv.h"
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#include "task.h"
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#include <string.h> /* memset */
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#define UV_NS_TO_MS 1000000
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typedef struct {
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uv_fs_t open_req;
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uv_fs_t write_req;
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uv_fs_t close_req;
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} fs_reqs_t;
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static uint64_t last_events_count;
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static char test_buf[] = "test-buffer\n";
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static fs_reqs_t fs_reqs;
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static int pool_events_counter;
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static void timer_spin_cb(uv_timer_t* handle) {
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uint64_t t;
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(*(int*) handle->data)++;
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t = uv_hrtime();
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/* Spin for 500 ms to spin loop time out of the delta check. */
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while (uv_hrtime() - t < 600 * UV_NS_TO_MS) { }
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}
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TEST_IMPL(metrics_idle_time) {
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#if defined(__OpenBSD__)
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RETURN_SKIP("Test does not currently work in OpenBSD");
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#endif
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const uint64_t timeout = 1000;
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uv_timer_t timer;
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uint64_t idle_time;
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int cntr;
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cntr = 0;
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timer.data = &cntr;
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ASSERT_EQ(0, uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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ASSERT_EQ(0, uv_timer_init(uv_default_loop(), &timer));
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ASSERT_EQ(0, uv_timer_start(&timer, timer_spin_cb, timeout, 0));
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ASSERT_EQ(0, uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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ASSERT_GT(cntr, 0);
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idle_time = uv_metrics_idle_time(uv_default_loop());
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/* Permissive check that the idle time matches within the timeout ±500 ms. */
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ASSERT_LE(idle_time, (timeout + 500) * UV_NS_TO_MS);
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ASSERT_GE(idle_time, (timeout - 500) * UV_NS_TO_MS);
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MAKE_VALGRIND_HAPPY(uv_default_loop());
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return 0;
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}
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static void metrics_routine_cb(void* arg) {
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const uint64_t timeout = 1000;
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uv_loop_t loop;
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uv_timer_t timer;
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uint64_t idle_time;
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int cntr;
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cntr = 0;
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timer.data = &cntr;
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ASSERT_EQ(0, uv_loop_init(&loop));
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ASSERT_EQ(0, uv_loop_configure(&loop, UV_METRICS_IDLE_TIME));
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ASSERT_EQ(0, uv_timer_init(&loop, &timer));
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ASSERT_EQ(0, uv_timer_start(&timer, timer_spin_cb, timeout, 0));
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ASSERT_EQ(0, uv_run(&loop, UV_RUN_DEFAULT));
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ASSERT_GT(cntr, 0);
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idle_time = uv_metrics_idle_time(&loop);
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/* Only checking that idle time is greater than the lower bound since there
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* may have been thread contention, causing the event loop to be delayed in
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* the idle phase longer than expected.
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*/
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ASSERT_GE(idle_time, (timeout - 500) * UV_NS_TO_MS);
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close_loop(&loop);
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ASSERT_EQ(0, uv_loop_close(&loop));
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}
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TEST_IMPL(metrics_idle_time_thread) {
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uv_thread_t threads[5];
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int i;
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for (i = 0; i < 5; i++) {
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ASSERT_EQ(0, uv_thread_create(&threads[i], metrics_routine_cb, NULL));
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}
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for (i = 0; i < 5; i++) {
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uv_thread_join(&threads[i]);
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}
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return 0;
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}
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static void timer_noop_cb(uv_timer_t* handle) {
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(*(int*) handle->data)++;
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}
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TEST_IMPL(metrics_idle_time_zero) {
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uv_metrics_t metrics;
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uv_timer_t timer;
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int cntr;
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cntr = 0;
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timer.data = &cntr;
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ASSERT_EQ(0, uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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ASSERT_EQ(0, uv_timer_init(uv_default_loop(), &timer));
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ASSERT_EQ(0, uv_timer_start(&timer, timer_noop_cb, 0, 0));
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ASSERT_EQ(0, uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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ASSERT_GT(cntr, 0);
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ASSERT_EQ(0, uv_metrics_idle_time(uv_default_loop()));
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ASSERT_EQ(0, uv_metrics_info(uv_default_loop(), &metrics));
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ASSERT_UINT64_EQ(cntr, metrics.loop_count);
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MAKE_VALGRIND_HAPPY(uv_default_loop());
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return 0;
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}
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static void close_cb(uv_fs_t* req) {
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uv_metrics_t metrics;
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ASSERT_EQ(0, uv_metrics_info(uv_default_loop(), &metrics));
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ASSERT_UINT64_EQ(3, metrics.loop_count);
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ASSERT_UINT64_GT(metrics.events, last_events_count);
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uv_fs_req_cleanup(req);
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last_events_count = metrics.events;
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}
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static void write_cb(uv_fs_t* req) {
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uv_metrics_t metrics;
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ASSERT_EQ(0, uv_metrics_info(uv_default_loop(), &metrics));
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ASSERT_UINT64_EQ(2, metrics.loop_count);
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ASSERT_UINT64_GT(metrics.events, last_events_count);
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ASSERT_EQ(req->result, sizeof(test_buf));
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uv_fs_req_cleanup(req);
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last_events_count = metrics.events;
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ASSERT_EQ(0, uv_fs_close(uv_default_loop(),
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&fs_reqs.close_req,
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fs_reqs.open_req.result,
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close_cb));
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}
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static void create_cb(uv_fs_t* req) {
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uv_metrics_t metrics;
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ASSERT_EQ(0, uv_metrics_info(uv_default_loop(), &metrics));
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/* Event count here is still 0 so not going to check. */
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ASSERT_UINT64_EQ(1, metrics.loop_count);
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ASSERT_GE(req->result, 0);
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uv_fs_req_cleanup(req);
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last_events_count = metrics.events;
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uv_buf_t iov = uv_buf_init(test_buf, sizeof(test_buf));
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ASSERT_EQ(0, uv_fs_write(uv_default_loop(),
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&fs_reqs.write_req,
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req->result,
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&iov,
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1,
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0,
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write_cb));
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}
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static void prepare_cb(uv_prepare_t* handle) {
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uv_metrics_t metrics;
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uv_prepare_stop(handle);
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ASSERT_EQ(0, uv_metrics_info(uv_default_loop(), &metrics));
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ASSERT_UINT64_EQ(0, metrics.loop_count);
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ASSERT_UINT64_EQ(0, metrics.events);
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ASSERT_EQ(0, uv_fs_open(uv_default_loop(),
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&fs_reqs.open_req,
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"test_file",
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O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR,
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create_cb));
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}
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TEST_IMPL(metrics_info_check) {
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uv_fs_t unlink_req;
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uv_prepare_t prepare;
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uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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uv_fs_req_cleanup(&unlink_req);
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ASSERT_EQ(0, uv_prepare_init(uv_default_loop(), &prepare));
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ASSERT_EQ(0, uv_prepare_start(&prepare, prepare_cb));
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ASSERT_EQ(0, uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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uv_fs_req_cleanup(&unlink_req);
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MAKE_VALGRIND_HAPPY(uv_default_loop());
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return 0;
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}
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static void fs_prepare_cb(uv_prepare_t* handle) {
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uv_metrics_t metrics;
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ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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if (pool_events_counter == 1)
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ASSERT_EQ(metrics.events, metrics.events_waiting);
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if (pool_events_counter < 7)
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return;
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uv_prepare_stop(handle);
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pool_events_counter = -42;
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}
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static void fs_stat_cb(uv_fs_t* req) {
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uv_fs_req_cleanup(req);
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pool_events_counter++;
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}
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static void fs_work_cb(uv_work_t* req) {
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}
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static void fs_after_work_cb(uv_work_t* req, int status) {
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free(req);
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pool_events_counter++;
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}
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static void fs_write_cb(uv_fs_t* req) {
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uv_work_t* work1 = malloc(sizeof(*work1));
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uv_work_t* work2 = malloc(sizeof(*work2));
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pool_events_counter++;
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uv_fs_req_cleanup(req);
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ASSERT_OK(uv_queue_work(uv_default_loop(),
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work1,
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fs_work_cb,
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fs_after_work_cb));
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ASSERT_OK(uv_queue_work(uv_default_loop(),
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work2,
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fs_work_cb,
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fs_after_work_cb));
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}
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static void fs_random_cb(uv_random_t* req, int status, void* buf, size_t len) {
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pool_events_counter++;
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}
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static void fs_addrinfo_cb(uv_getaddrinfo_t* req,
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int status,
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struct addrinfo* res) {
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uv_freeaddrinfo(req->addrinfo);
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pool_events_counter++;
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}
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TEST_IMPL(metrics_pool_events) {
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uv_buf_t iov;
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uv_fs_t open_req;
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uv_fs_t stat1_req;
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uv_fs_t stat2_req;
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uv_fs_t unlink_req;
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uv_fs_t write_req;
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uv_getaddrinfo_t addrinfo_req;
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uv_metrics_t metrics;
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uv_prepare_t prepare;
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uv_random_t random_req;
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int fd;
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char rdata;
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ASSERT_OK(uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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uv_fs_req_cleanup(&unlink_req);
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ASSERT_OK(uv_prepare_init(uv_default_loop(), &prepare));
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ASSERT_OK(uv_prepare_start(&prepare, fs_prepare_cb));
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pool_events_counter = 0;
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fd = uv_fs_open(NULL,
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&open_req,
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"test_file",
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O_WRONLY | O_CREAT,
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S_IRUSR | S_IWUSR,
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NULL);
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ASSERT_GT(fd, 0);
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uv_fs_req_cleanup(&open_req);
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iov = uv_buf_init(test_buf, sizeof(test_buf));
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ASSERT_OK(uv_fs_write(uv_default_loop(),
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&write_req,
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fd,
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&iov,
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1,
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0,
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fs_write_cb));
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ASSERT_OK(uv_fs_stat(uv_default_loop(),
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&stat1_req,
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"test_file",
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fs_stat_cb));
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ASSERT_OK(uv_fs_stat(uv_default_loop(),
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&stat2_req,
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"test_file",
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fs_stat_cb));
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ASSERT_OK(uv_random(uv_default_loop(),
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&random_req,
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&rdata,
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1,
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0,
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fs_random_cb));
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ASSERT_OK(uv_getaddrinfo(uv_default_loop(),
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&addrinfo_req,
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fs_addrinfo_cb,
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"example.invalid",
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NULL,
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NULL));
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/* Sleep for a moment to hopefully force the events to complete before
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* entering the event loop. */
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uv_sleep(100);
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ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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/* It's possible for uv__work_done() to execute one extra time even though the
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* QUEUE has already been cleared out. This has to do with the way we use an
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* uv_async to tell the event loop thread to process the worker pool QUEUE. */
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ASSERT_GE(metrics.events, 7);
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/* It's possible one of the other events also got stuck in the event queue, so
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* check GE instead of EQ. Reason for 4 instead of 5 is because the call to
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* uv_getaddrinfo() is racey and slow. So can't guarantee that it'll always
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* execute before sleep completes. */
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ASSERT_GE(metrics.events_waiting, 4);
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ASSERT_EQ(pool_events_counter, -42);
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uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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uv_fs_req_cleanup(&unlink_req);
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MAKE_VALGRIND_HAPPY(uv_default_loop());
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return 0;
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}
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