C++ (Cpp) xc_set_cpufreq_gov Examples

Example #1

File: xenpm.c Project: tklengyel/xen

void scaling_governor_func(int argc, char *argv[])
{
    int cpuid = -1;
    char *name;

    if ( argc >= 2 )
    {
        parse_cpuid(argv[0], &cpuid);
        name = argv[1];
    }
    else if ( argc > 0 )
        name = argv[0];
    else
    {
        fprintf(stderr, "Missing argument(s)\n");
        exit(EINVAL);
    }

    if ( cpuid < 0 )
    {
        int i;
        for ( i = 0; i < max_cpu_nr; i++ )
            if ( xc_set_cpufreq_gov(xc_handle, i, name) )
                fprintf(stderr, "[CPU%d] failed to set governor name (%d - %s)\n",
                        i, errno, strerror(errno));
    }
    else
    {
        if ( xc_set_cpufreq_gov(xc_handle, cpuid, name) )
            fprintf(stderr, "failed to set governor name (%d - %s)\n",
                    errno, strerror(errno));
    }
}

Example #2

File: xenpm.c Project: CPFL/gxen

void scaling_governor_func(int argc, char *argv[])
{
    int cpuid = -1;
    char *name = NULL;

    if ( argc >= 2 )
    {
        name = strdup(argv[1]);
        if ( name == NULL )
            goto out;
        if ( sscanf(argv[0], "%d", &cpuid) != 1 )
        {
            free(name);
            goto out;
        }
    }
    else if ( argc > 0 )
    {
        name = strdup(argv[0]);
        if ( name == NULL )
            goto out;
    }
    else
        goto out;

    if ( cpuid < 0 )
    {
        int i;
        for ( i = 0; i < max_cpu_nr; i++ )
            if ( xc_set_cpufreq_gov(xc_handle, i, name) )
                fprintf(stderr, "[CPU%d] failed to set governor name\n", i);
    }
    else
    {
        if ( xc_set_cpufreq_gov(xc_handle, cpuid, name) )
            fprintf(stderr, "failed to set governor name\n");
    }

    free(name);
    return ;
out:
    fprintf(stderr, "failed to set governor name\n");
}