This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
sched_rr_get_interval — get execution time limits (REALTIME)
int sched_rr_get_interval(pid_t pid, struct timespec *interval);
The sched_rr_get_interval() function shall update the timespec
structure referenced by the interval argument to contain the current
execution time limit (that is, time quantum) for the process specified by
pid. If pid is zero, the current execution time limit for the
calling process shall be returned.
If successful, the sched_rr_get_interval() function shall return zero.
Otherwise, it shall return a value of -1 and set errno to indicate the
The sched_rr_get_interval() function shall fail if:
- No process can be found corresponding to that specified by
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html .
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