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210 lines (169 loc) · 5.04 KB
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#include "node.h"
#include "platform.h"
#include <v8.h>
#include <stdlib.h>
#include <kvm.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <sys/dkstat.h>
#include <vm/vm_param.h>
#include <string.h>
#include <paths.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
namespace node {
using namespace v8;
static char *process_title;
char** Platform::SetupArgs(int argc, char *argv[]) {
process_title = argc ? strdup(argv[0]) : NULL;
return argv;
}
void Platform::SetProcessTitle(char *title) {
if (process_title) free(process_title);
process_title = strdup(title);
setproctitle(title);
}
const char* Platform::GetProcessTitle(int *len) {
if (process_title) {
*len = strlen(process_title);
return process_title;
}
*len = 0;
return NULL;
}
int Platform::GetMemory(size_t *rss, size_t *vsize) {
kvm_t *kd = NULL;
struct kinfo_proc *kinfo = NULL;
pid_t pid;
int nprocs;
size_t page_size = getpagesize();
pid = getpid();
kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, "kvm_open");
if (kd == NULL) goto error;
kinfo = kvm_getprocs(kd, KERN_PROC_PID, pid, &nprocs);
if (kinfo == NULL) goto error;
*rss = kinfo->ki_rssize * page_size;
*vsize = kinfo->ki_size;
kvm_close(kd);
return 0;
error:
if (kd) kvm_close(kd);
return -1;
}
int Platform::GetExecutablePath(char* buffer, size_t* size) {
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
if (sysctl(mib, 4, buffer, size, NULL, 0) == -1) {
return -1;
}
*size-=1;
return 0;
}
int Platform::GetCPUInfo(Local<Array> *cpus) {
Local<Object> cpuinfo;
Local<Object> cputimes;
unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),
multiplier = ((uint64_t)1000L / ticks), cpuspeed, maxcpus,
cur = 0;
char model[512];
int numcpus;
size_t size;
size = sizeof(model);
if (sysctlbyname("hw.model", &model, &size, NULL, 0) < 0) {
return -1;
}
size = sizeof(numcpus);
if (sysctlbyname("hw.ncpu", &numcpus, &size, NULL, 0) < 0) {
return -1;
}
*cpus = Array::New(numcpus);
size = sizeof(cpuspeed);
if (sysctlbyname("hw.clockrate", &cpuspeed, &size, NULL, 0) < 0) {
return -1;
}
// kern.cp_times on FreeBSD i386 gives an array up to maxcpus instead of ncpu
size = sizeof(maxcpus);
if (sysctlbyname("kern.smp.maxcpus", &maxcpus, &size, NULL, 0) < 0) {
return -1;
}
size = maxcpus * CPUSTATES * sizeof(long);
long cp_times[size];
if (sysctlbyname("kern.cp_times", &cp_times, &size, NULL, 0) < 0) {
return -1;
}
for (int i = 0; i < numcpus; i++) {
cpuinfo = Object::New();
cputimes = Object::New();
cputimes->Set(String::New("user"),
Number::New((uint64_t)(cp_times[CP_USER+cur]) * multiplier));
cputimes->Set(String::New("nice"),
Number::New((uint64_t)(cp_times[CP_NICE+cur]) * multiplier));
cputimes->Set(String::New("sys"),
Number::New((uint64_t)(cp_times[CP_SYS+cur]) * multiplier));
cputimes->Set(String::New("idle"),
Number::New((uint64_t)(cp_times[CP_IDLE+cur]) * multiplier));
cputimes->Set(String::New("irq"),
Number::New((uint64_t)(cp_times[CP_INTR+cur]) * multiplier));
cpuinfo->Set(String::New("model"), String::New(model));
cpuinfo->Set(String::New("speed"), Number::New(cpuspeed));
cpuinfo->Set(String::New("times"), cputimes);
(*cpus)->Set(i, cpuinfo);
cur+=CPUSTATES;
}
return 0;
}
double Platform::GetFreeMemory() {
double pagesize = static_cast<double>(sysconf(_SC_PAGESIZE));
unsigned long info;
size_t size = sizeof(info);
if (sysctlbyname("vm.stats.vm.v_free_count", &info, &size, NULL, 0) < 0) {
return -1;
}
return (static_cast<double>(info)) * pagesize;
}
double Platform::GetTotalMemory() {
#if defined(HW_PHYSMEM64)
uint64_t info;
static int which[] = {CTL_HW, HW_PHYSMEM64};
#else
unsigned int info;
static int which[] = {CTL_HW, HW_PHYSMEM};
#endif
size_t size = sizeof(info);
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
return -1;
}
return static_cast<double>(info);
}
double Platform::GetUptime() {
time_t now;
struct timeval info;
size_t size = sizeof(info);
static int which[] = {CTL_KERN, KERN_BOOTTIME};
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
return -1;
}
now = time(NULL);
return static_cast<double>(now - info.tv_sec);
}
int Platform::GetLoadAvg(Local<Array> *loads) {
struct loadavg info;
size_t size = sizeof(info);
static int which[] = {CTL_VM, VM_LOADAVG};
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) {
return -1;
}
(*loads)->Set(0, Number::New(static_cast<double>(info.ldavg[0])
/ static_cast<double>(info.fscale)));
(*loads)->Set(1, Number::New(static_cast<double>(info.ldavg[1])
/ static_cast<double>(info.fscale)));
(*loads)->Set(2, Number::New(static_cast<double>(info.ldavg[2])
/ static_cast<double>(info.fscale)));
return 0;
}
} // namespace node