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