12-17-2002
dynamic pid?
hi, i noticed that the pid of a process can change.. is that true?
like now i do a ps on my terminal.. and there is a list of process with their pids.. and later with the same process, (without qutting and runnign the same process) this time round, their pid are different?
is it true?
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LEARN ABOUT OPENSOLARIS
sched_getscheduler
sched_getscheduler(3C) Standard C Library Functions sched_getscheduler(3C)
NAME
sched_getscheduler - get scheduling policy
SYNOPSIS
#include <sched.h>
int sched_getscheduler(pid_t pid);
DESCRIPTION
The sched_getscheduler() function returns the scheduling policy of the process specified by pid. If the value of pid is negative, the
behavior of the sched_getscheduler() function is unspecified.
The values that can be returned by sched_getscheduler() are defined in the header <sched.h> and described on the sched_setscheduler(3C)
manual page.
If a process specified by pid exists and if the calling process has permission, the scheduling policy will be returned for the process
whose process ID is equal to pid.
If pid is 0, the scheduling policy will be returned for the calling process.
RETURN VALUES
Upon successful completion, the sched_getscheduler() function returns the scheduling policy of the specified process. If unsuccessful, the
function returns -1 and sets errno to indicate the error.
ERRORS
The sched_getscheduler() function will fail if:
EPERM The requesting process does not have permission to determine the scheduling policy of the specified process.
ESRCH No process can be found corresponding to that specified by pid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
|ATTRIBUTE TYPE |ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
|Standard |See standards(5). |
+-----------------------------+-----------------------------+
SEE ALSO
librt(3LIB), sched.h(3HEAD), sched_getparam(3C), sched_setparam(3C), sched_setscheduler(3C), attributes(5), standards(5)
SunOS 5.11 1 Apr 2008 sched_getscheduler(3C)