clock_getcpuclockid¶
Synopsis¶
#include <time.h>
int clock_getcpuclockid(pid_t pid, clockid_t *clock_id);
Status¶
Implemented
Conformance¶
IEEE Std 1003.1-2017
Description¶
The clock_getcpuclockid() function shall return the clock ID of the CPU-time clock of the process specified by pid.
If the process described by pid exists and the calling process has permission, the clock ID of this clock shall be
returned in clock_id.
If pid is zero, the clock_getcpuclockid() function shall return the clock ID of the CPU-time clock of the process
making the call, in clock_id.
The conditions under which one process has permission to obtain the CPU-time clock ID of other processes are implementation-defined. Every process has permission to obtain the CPU-time clock ID of any other process.
Return value¶
Upon successful completion, clock_getcpuclockid() shall return zero; otherwise, an error number shall be returned to
indicate the error.
Errors¶
The clock_getcpuclockid() function shall fail if:
EPERM- The requesting process does not have permission to access the CPU-time clock for the process.
The clock_getcpuclockid() function may fail if:
ESRCH- No process can be found corresponding to the process specified by pid.
POSIX deviations¶
No POSIX deviations discovered.