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#include "loadave.h"
#include <stdio.h>
int la_init(unsigned long long *times)
{
return la_read(times);
}
#if defined( linux )
int la_read(unsigned long long *times)
{
int i;
unsigned long long c_idle,c_sys,c_nice,c_iow,c_user,c_xxx,c_yyy;
FILE *f=fopen("/proc/stat","rt");
if (!f)
return LA_ERROR;
i=fscanf(f,"cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu\n",
&c_user,&c_nice,&c_sys,&c_idle,&c_iow,&c_xxx,&c_yyy);
if (i<4)
return LA_ERROR;
if (i<5)
c_iow=0;
fclose(f);
times[CP_IDLE] = c_idle;
times[CP_SYS] = c_sys;
times[CP_NICE] = c_nice;
times[CP_USER] = c_user;
times[CP_IOWAIT] = c_iow;
return LA_NOERR;
}
#elif defined( __FreeBSD__ ) || defined( __FreeBSD_kernel__ )
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/resource.h> // CPUSTATES
#include <sys/sysctl.h> // sysctlbyname()
int la_read(unsigned long long *times)
{
const char
*name = "kern.cp_time";
int
cpu_states[CPUSTATES];
size_t
nlen = sizeof cpu_states,
len = nlen;
int
err;
err= sysctlbyname(name, &cpu_states, &nlen, NULL, 0);
if( -1 == err )
{
fprintf(stderr, "sysctl(%s...) failed: %s\n", name, strerror(errno));
exit(errno);
}
if( nlen != len )
{
fprintf(stderr, "sysctl(%s...) expected %lu, got %lu\n",
name, (unsigned long) len, (unsigned long) nlen);
exit(errno);
}
times[CP_IDLE] = cpu_states[4];
times[CP_SYS] = cpu_states[2];
times[CP_NICE] = cpu_states[1];
times[CP_USER] = cpu_states[0];
times[CP_IOWAIT] = cpu_states[3];
return LA_NOERR;
}
#elif defined( __NetBSD__ ) || defined ( __OpenBSD__)
#include <sys/types.h>
#include <errno.h>
#include <sys/resource.h> // CPUSTATES
#include <sys/param.h>
#include <sys/sysctl.h> // sysctlbyname()
#include <string.h> // strerror()
#include <machine/cpu.h> // second level machdep identifiers
int la_read(unsigned long long *times)
{
int mib[2];
#ifdef __NetBSD__
uint64_t
cpu_states[CPUSTATES];
#else
long
cpu_states[CPUSTATES];
#endif
size_t
nlen = sizeof cpu_states,
len = nlen;
int
err;
#ifdef __NetBSD__
mib[0] = CTL_KERN;
mib[1] = KERN_CP_TIME;
#else
mib[0] = CTL_KERN;
mib[1] = KERN_CPTIME;
#endif
err= sysctl(mib, 2, &cpu_states, &nlen, NULL, 0);
if( -1 == err )
{
fprintf(stderr, "sysctl(...) failed: %s\n", strerror(errno));
exit(errno);
}
if( nlen != len )
{
fprintf(stderr, "sysctl(...) expected %lu, got %lu\n",
(unsigned long) len, (unsigned long) nlen);
exit(errno);
}
times[CP_IDLE] = cpu_states[4];
times[CP_SYS] = cpu_states[2];
times[CP_NICE] = cpu_states[1];
times[CP_USER] = cpu_states[0];
times[CP_IOWAIT] = cpu_states[3];
return LA_NOERR;
}
#else
// Darwin should always be the always the last option...
#include <sys/sysctl.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <mach/mach_error.h>
#include <mach/mach_port.h>
#include <mach/mach_types.h>
int la_read(unsigned long long *times)
{
kern_return_t ret;
host_cpu_load_info_data_t cpuStats;
mach_msg_type_number_t count;
static mach_port_t timemon_port = 0L;
long long totalticks;
if(timemon_port == 0L)
{
timemon_port = mach_host_self();
}
count = HOST_CPU_LOAD_INFO_COUNT;
ret = host_statistics(timemon_port,HOST_CPU_LOAD_INFO,(host_info_t)&cpuStats,&count);
totalticks = cpuStats.cpu_ticks[CPU_STATE_IDLE] + cpuStats.cpu_ticks[CPU_STATE_USER] +
cpuStats.cpu_ticks[CPU_STATE_NICE] + cpuStats.cpu_ticks[CPU_STATE_SYSTEM];
times[CP_IDLE] = cpuStats.cpu_ticks[CPU_STATE_IDLE];
times[CP_SYS] = cpuStats.cpu_ticks[CPU_STATE_SYSTEM];
times[CP_NICE] = cpuStats.cpu_ticks[CPU_STATE_NICE];
times[CP_USER] = cpuStats.cpu_ticks[CPU_STATE_USER];
times[CP_IOWAIT] = 0;
return LA_NOERR;
}
#endif
void la_finish(void)
{
}
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