1/* Copyright libuv contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22#include "uv.h"
23#include "task.h"
24
25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h> /* memset */
28
29#ifdef __POSIX__
30#include <pthread.h>
31#include <errno.h>
32#endif
33
34#ifdef _WIN32
35#include <windows.h>
36#else
37#include <unistd.h>
38#endif
39
40uv_sem_t sem;
41
42static void simple_task(void *args) {
43  uv_sem_wait(&sem);
44  printf("in simple_task\n");
45}
46
47TEST_IMPL(thread_priority) {
48  int priority;
49#ifndef _WIN32
50  int min;
51  int max;
52  int policy;
53  struct sched_param param;
54#endif
55  uv_thread_t task_id;
56
57  /* Verify that passing a NULL pointer returns UV_EINVAL. */
58  ASSERT_EQ(UV_EINVAL, uv_thread_getpriority(0, NULL));
59  ASSERT_OK(uv_sem_init(&sem, 1));
60  uv_sem_wait(&sem);
61  ASSERT_OK(uv_thread_create(&task_id, simple_task, NULL));
62  ASSERT_OK(uv_thread_getpriority(task_id, &priority));
63
64#ifdef _WIN32
65  ASSERT_EQ(priority, THREAD_PRIORITY_NORMAL);
66#else
67  ASSERT_OK(pthread_getschedparam(task_id, &policy, &param));
68#ifdef __PASE__
69  min = 1;
70  max = 127;
71#else
72  min = sched_get_priority_min(policy);
73  max = sched_get_priority_max(policy);
74#endif
75  ASSERT(priority >= min && priority <= max);
76#endif
77
78  ASSERT_OK(uv_thread_setpriority(task_id, UV_THREAD_PRIORITY_LOWEST));
79  ASSERT_OK(uv_thread_getpriority(task_id, &priority));
80
81#ifdef _WIN32
82  ASSERT_EQ(priority, THREAD_PRIORITY_LOWEST);
83#else
84  ASSERT_EQ(priority, min);
85#endif
86
87/**
88 * test set nice value for the calling thread with default schedule policy
89*/
90#ifdef __linux__
91  ASSERT_OK(uv_thread_getpriority(pthread_self(), &priority));
92  ASSERT_EQ(priority, 0);
93  ASSERT_OK(uv_thread_setpriority(pthread_self(), UV_THREAD_PRIORITY_LOWEST));
94  ASSERT_OK(uv_thread_getpriority(pthread_self(), &priority));
95  ASSERT_EQ(priority, (0 - UV_THREAD_PRIORITY_LOWEST * 2));
96#endif
97
98  uv_sem_post(&sem);
99
100  ASSERT_OK(uv_thread_join(&task_id));
101
102  uv_sem_destroy(&sem);
103
104  return 0;
105}