1sched_getscheduler(3C) Standard C Library Functions sched_getscheduler(3C)
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6 sched_getscheduler - get scheduling policy
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9 #include <sched.h>
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11 int sched_getscheduler(pid_t pid);
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15 The sched_getscheduler() function returns the scheduling policy of the
16 process specified by pid. If the value of pid is negative, the behavior
17 of the sched_getscheduler() function is unspecified.
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20 The values that can be returned by sched_getscheduler() are defined in
21 the header <sched.h> and described on the sched_setscheduler(3C) manual
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25 If a process specified by pid exists and if the calling process has
26 permission, the scheduling policy will be returned for the process
27 whose process ID is equal to pid.
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30 If pid is 0, the scheduling policy will be returned for the calling
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34 Upon successful completion, the sched_getscheduler() function returns
35 the scheduling policy of the specified process. If unsuccessful, the
36 function returns −1 and sets errno to indicate the error.
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39 The sched_getscheduler() function will fail if:
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41 EPERM The requesting process does not have permission to determine
42 the scheduling policy of the specified process.
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45 ESRCH No process can be found corresponding to that specified by
46 pid.
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50 See attributes(5) for descriptions of the following attributes:
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55 ┌─────────────────────────────┬─────────────────────────────┐
56 │ATTRIBUTE TYPE │ATTRIBUTE VALUE │
57 ├─────────────────────────────┼─────────────────────────────┤
58 │Interface Stability │Committed │
59 ├─────────────────────────────┼─────────────────────────────┤
60 │MT-Level │MT-Safe │
61 ├─────────────────────────────┼─────────────────────────────┤
62 │Standard │See standards(5). │
63 └─────────────────────────────┴─────────────────────────────┘
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66 librt(3LIB), sched.h(3HEAD), sched_getparam(3C), sched_setparam(3C),
67 sched_setscheduler(3C), attributes(5), standards(5)
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71SunOS 5.11 1 Apr 2008 sched_getscheduler(3C)