cpusetGetCPULimits(3x)cpusetGetCPULimits(3x)NAMEcpusetGetCPULimits - get the CPU count limits for a cpuset
SYNOPSIS
#include <cpuset.h>
int cpusetGetCPULimits(char *qname, int *advisory, int *mandatory);
DESCRIPTION
The cpusetGetCPULimits function is used to obtain the advisory and
mandatory CPU counts that constrained the conditions under which the
cpuset could be created. The advisory CPU count limit will be copied
into the memory referenced by the advisory argument. The mandatory CPU
count limit will be copied into the memory referenced by the mandatory
argument.
Only processes running with a user ID or group ID that has read access
permissions on the permissions file can successfully execute this
function. The qname argument is the name of the specified cpuset.
The return value of the function indicates if the function was
successfully executed.
EXAMPLES
This example prints out the advisory and mandatory CPU counts used when
creating the cpuset mpi_set.
char *qname = "mpi_set";
int cpuadv = 0;
int cpuman = 0;
/* Get the list of CPUs else print error & exit */
if (!cpusetGetCPULimits(qname, &cpuadv, &cpuman)) ) {
perror("cpusetGetCPULimits");
exit(1);
}
printf("CPU count, advisory limit: %d\n", cpuadv);
printf("CPU count, mandatory limit: %d\n", cpuman);
NOTEScpusetGetCPULimits is found in the library "libcpuset.so", and will be
loaded if the option -lcpuset is used with cc(1) or ld(1).
SEE ALSOcpuset(1), cpusetSetCPULimits(3x), cpuset(5).
DIAGNOSTICS
If successful, cpusetGetCPULimits returns 1. If cpusetGetCPULimits
fails, it returns 0 and errno is set to indicate the error. The possible
values for errno include those values as set by sysmp(2) and sbrk(2).
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