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
TEST_IMPL(process_priority)26 TEST_IMPL(process_priority) {
27 int priority;
28 int r;
29 int i;
30
31 #if defined(__MVS__)
32 if (uv_os_setpriority(0, 0) == UV_ENOSYS)
33 RETURN_SKIP("functionality not supported on zOS");
34 #endif
35
36 /* Verify that passing a NULL pointer returns UV_EINVAL. */
37 r = uv_os_getpriority(0, NULL);
38 ASSERT_EQ(r, UV_EINVAL);
39
40 /* Verify that all valid values work. */
41 for (i = UV_PRIORITY_HIGHEST; i <= UV_PRIORITY_LOW; i++) {
42 r = uv_os_setpriority(0, i);
43
44 /* If UV_EACCES is returned, the current user doesn't have permission to
45 set this specific priority. */
46 if (r == UV_EACCES)
47 continue;
48
49 ASSERT_OK(r);
50 ASSERT_OK(uv_os_getpriority(0, &priority));
51
52 /* Verify that the priority values match on Unix, and are range mapped
53 on Windows. */
54 #ifndef _WIN32
55 ASSERT_EQ(priority, i);
56 #else
57 /* On Windows, only elevated users can set UV_PRIORITY_HIGHEST. Other
58 users will silently be set to UV_PRIORITY_HIGH. */
59 if (i < UV_PRIORITY_HIGH)
60 ASSERT(priority == UV_PRIORITY_HIGHEST || priority == UV_PRIORITY_HIGH);
61 else if (i < UV_PRIORITY_ABOVE_NORMAL)
62 ASSERT_EQ(priority, UV_PRIORITY_HIGH);
63 else if (i < UV_PRIORITY_NORMAL)
64 ASSERT_EQ(priority, UV_PRIORITY_ABOVE_NORMAL);
65 else if (i < UV_PRIORITY_BELOW_NORMAL)
66 ASSERT_EQ(priority, UV_PRIORITY_NORMAL);
67 else if (i < UV_PRIORITY_LOW)
68 ASSERT_EQ(priority, UV_PRIORITY_BELOW_NORMAL);
69 else
70 ASSERT_EQ(priority, UV_PRIORITY_LOW);
71 #endif
72
73 /* Verify that the current PID and 0 are equivalent. */
74 ASSERT_OK(uv_os_getpriority(uv_os_getpid(), &r));
75 ASSERT_EQ(priority, r);
76 }
77
78 /* Verify that invalid priorities return UV_EINVAL. */
79 ASSERT_EQ(uv_os_setpriority(0, UV_PRIORITY_HIGHEST - 1), UV_EINVAL);
80 ASSERT_EQ(uv_os_setpriority(0, UV_PRIORITY_LOW + 1), UV_EINVAL);
81
82 return 0;
83 }
84
