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 | |
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(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(r == 0); |
50 | ASSERT(uv_os_getpriority(0, &priority) == 0); |
51 | |
52 | /* Verify that the priority values match on Unix, and are range mapped |
53 | on Windows. */ |
54 | #ifndef _WIN32 |
55 | ASSERT(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(priority == UV_PRIORITY_HIGH); |
63 | else if (i < UV_PRIORITY_NORMAL) |
64 | ASSERT(priority == UV_PRIORITY_ABOVE_NORMAL); |
65 | else if (i < UV_PRIORITY_BELOW_NORMAL) |
66 | ASSERT(priority == UV_PRIORITY_NORMAL); |
67 | else if (i < UV_PRIORITY_LOW) |
68 | ASSERT(priority == UV_PRIORITY_BELOW_NORMAL); |
69 | else |
70 | ASSERT(priority == UV_PRIORITY_LOW); |
71 | #endif |
72 | |
73 | /* Verify that the current PID and 0 are equivalent. */ |
74 | ASSERT(uv_os_getpriority(uv_os_getpid(), &r) == 0); |
75 | ASSERT(priority == r); |
76 | } |
77 | |
78 | /* Verify that invalid priorities return UV_EINVAL. */ |
79 | ASSERT(uv_os_setpriority(0, UV_PRIORITY_HIGHEST - 1) == UV_EINVAL); |
80 | ASSERT(uv_os_setpriority(0, UV_PRIORITY_LOW + 1) == UV_EINVAL); |
81 | |
82 | return 0; |
83 | } |
84 | |