1 #include <darwintest.h>
2 
3 #include <stdlib.h>
4 #include <unistd.h>
5 #include <sys/stat.h>
6 #include <sys/wait.h>
7 
8 T_GLOBAL_META(
9 	T_META_NAMESPACE("xnu.quicktest"),
10 	T_META_CHECK_LEAKS(false),
11 	T_META_RUN_CONCURRENTLY(true)
12 	);
13 
14 T_DECL(getpriority_setpriority, "Tests getpriority and setpriority system calls", T_META_ASROOT(true))
15 {
16 	int my_priority;
17 	int my_new_priority;
18 
19 	/* getpriority returns scheduling priority so -1 is a valid value */
20 	errno       = 0;
21 	my_priority = getpriority(PRIO_PROCESS, 0);
22 
23 	T_WITH_ERRNO;
24 	T_ASSERT_FALSE(my_priority == -1 && errno != 0, "Verify getpriority is successful", NULL);
25 
26 	/* change scheduling priority*/
27 	my_new_priority = (my_priority == PRIO_MIN) ? (my_priority + 10) : (PRIO_MIN);
28 
29 	T_WITH_ERRNO;
30 	T_ASSERT_POSIX_SUCCESS(setpriority(PRIO_PROCESS, 0, my_new_priority), "Change scheduling priority", NULL);
31 
32 	/* verify change */
33 	errno       = 0;
34 	my_priority = getpriority(PRIO_PROCESS, 0);
35 	T_WITH_ERRNO;
36 	T_ASSERT_FALSE(my_priority == -1 && errno != 0, "Verify getpriority change is successful", NULL);
37 
38 	T_WITH_ERRNO;
39 	T_ASSERT_EQ(my_priority, my_new_priority, "Verify setpriority correctly set scheduling priority", NULL);
40 
41 	/* reset scheduling priority */
42 	T_WITH_ERRNO;
43 	T_ASSERT_POSIX_SUCCESS(setpriority(PRIO_PROCESS, 0, 0), "Reset scheduling priority", NULL);
44 }
45