/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "internal.h"
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <paths.h>
#include <sys/user.h>
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/sysctl.h>
#include <vm/vm_param.h> /* VM_LOADAVG */
#include <time.h>
#include <stdlib.h>
#include <unistd.h> /* sysconf */
#include <fcntl.h>
#ifndef CPUSTATES
# define CPUSTATES 5U
#endif
#ifndef CP_USER
# define CP_USER 0
# define CP_NICE 1
# define CP_SYS 2
# define CP_IDLE 3
# define CP_INTR 4
#endif
static uv_mutex_t process_title_mutex;
static uv_once_t process_title_mutex_once = UV_ONCE_INIT;
static char *process_title;
static void init_process_title_mutex_once(void) {
uv_mutex_init(&process_title_mutex);
}
int uv__platform_loop_init(uv_loop_t* loop) {
return uv__kqueue_init(loop);
}
void uv__platform_loop_delete(uv_loop_t* loop) {
}
#ifdef __DragonFly__
int uv_exepath(char* buffer, size_t* size) {
char abspath[PATH_MAX * 2 + 1];
ssize_t abspath_size;
if (buffer == NULL || size == NULL || *size == 0)
return UV_EINVAL;
abspath_size = readlink("/proc/curproc/file", abspath, sizeof(abspath));
if (abspath_size < 0)
return UV__ERR(errno);
assert(abspath_size > 0);
*size -= 1;
if (*size > abspath_size)
*size = abspath_size;
memcpy(buffer, abspath, *size);
buffer[*size] = '\0';
return 0;
}
#else
int uv_exepath(char* buffer, size_t* size) {
char abspath[PATH_MAX * 2 + 1];
int mib[4];
size_t abspath_size;
if (buffer == NULL || size == NULL || *size == 0)
return UV_EINVAL;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
abspath_size = sizeof abspath;
if (sysctl(mib, 4, abspath, &abspath_size, NULL, 0))
return UV__ERR(errno);
assert(abspath_size > 0);
abspath_size -= 1;
*size -= 1;
if (*size > abspath_size)
*size = abspath_size;
memcpy(buffer, abspath, *size);
buffer[*size] = '\0';
return 0;
}
#endif
uint64_t uv_get_free_memory(void) {
int freecount;
size_t size = sizeof(freecount);
if (sysctlbyname("vm.stats.vm.v_free_count", &freecount, &size, NULL, 0))
return UV__ERR(errno);
return (uint64_t) freecount * sysconf(_SC_PAGESIZE);
}
uint64_t uv_get_total_memory(void) {
unsigned long info;
int which[] = {CTL_HW, HW_PHYSMEM};
size_t size = sizeof(info);
if (sysctl(which, 2, &info, &size, NULL, 0))
return UV__ERR(errno);
return (uint64_t) info;
}
void uv_loadavg(double avg[3]) {
struct loadavg info;
size_t size = sizeof(info);
int which[] = {CTL_VM, VM_LOADAVG};
if (sysctl(which, 2, &info, &size, NULL, 0) < 0) return;
avg[0] = (double) info.ldavg[0] / info.fscale;
avg[1] = (double) info.ldavg[1] / info.fscale;
avg[2] = (double) info.ldavg[2] / info.fscale;
}
char** uv_setup_args(int argc, char** argv) {
process_title = argc ? uv__strdup(argv[0]) : NULL;
return argv;
}
int uv_set_process_title(const char* title) {
int oid[4];
char* new_title;
new_title = uv__strdup(title);
uv_once(&process_title_mutex_once, init_process_title_mutex_once);
uv_mutex_lock(&process_title_mutex);
if (process_title == NULL) {
uv_mutex_unlock(&process_title_mutex);
return UV_ENOMEM;
}
uv__free(process_title);
process_title = new_title;
oid[0] = CTL_KERN;
oid[1] = KERN_PROC;
oid[2] = KERN_PROC_ARGS;
oid[3] = getpid();
sysctl(oid,
ARRAY_SIZE(oid),
NULL,
NULL,
process_title,
strlen(process_title) + 1);
uv_mutex_unlock(&process_title_mutex);
return 0;
}
int uv_get_process_title(char* buffer, size_t size) {
size_t len;
if (buffer == NULL || size == 0)
return UV_EINVAL;
uv_once(&process_title_mutex_once, init_process_title_mutex_once);
uv_mutex_lock(&process_title_mutex);
if (process_title) {
len = strlen(process_title) + 1;
if (size < len) {
uv_mutex_unlock(&process_title_mutex);
return UV_ENOBUFS;
}
memcpy(buffer, process_title, len);
} else {
len = 0;
}
uv_mutex_unlock(&process_title_mutex);
buffer[len] = '\0';
return 0;
}
int uv_resident_set_memory(size_t* rss) {
struct kinfo_proc kinfo;
size_t page_size;
size_t kinfo_size;
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = getpid();
kinfo_size = sizeof(kinfo);
if (sysctl(mib, 4, &kinfo, &kinfo_size, NULL, 0))
return UV__ERR(errno);
page_size = getpagesize();
#ifdef __DragonFly__
*rss = kinfo.kp_vm_rssize * page_size;
#else
*rss = kinfo.ki_rssize * page_size;
#endif
return 0;
}
int uv_uptime(double* uptime) {
int r;
struct timespec sp;
r = clock_gettime(CLOCK_MONOTONIC, &sp);
if (r)
return UV__ERR(errno);
*uptime = sp.tv_sec;
return 0;
}
int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),
multiplier = ((uint64_t)1000L / ticks), cpuspeed, maxcpus,
cur = 0;
uv_cpu_info_t* cpu_info;
const char* maxcpus_key;
const char* cptimes_key;
const char* model_key;
char model[512];
long* cp_times;
int numcpus;
size_t size;
int i;
#if defined(__DragonFly__)
/* This is not quite correct but DragonFlyBSD doesn't seem to have anything
* comparable to kern.smp.maxcpus or kern.cp_times (kern.cp_time is a total,
* not per CPU). At least this stops uv_cpu_info() from failing completely.
*/
maxcpus_key = "hw.ncpu";
cptimes_key = "kern.cp_time";
#else
maxcpus_key = "kern.smp.maxcpus";
cptimes_key = "kern.cp_times";
#endif
#if defined(__arm__) || defined(__aarch64__)
/* The key hw.model and hw.clockrate are not available on FreeBSD ARM. */
model_key = "hw.machine";
cpuspeed = 0;
#else
model_key = "hw.model";
size = sizeof(cpuspeed);
if (sysctlbyname("hw.clockrate", &cpuspeed, &size, NULL, 0))
return -errno;
#endif
size = sizeof(model);
if (sysctlbyname(model_key, &model, &size, NULL, 0))
return UV__ERR(errno);
size = sizeof(numcpus);
if (sysctlbyname("hw.ncpu", &numcpus, &size, NULL, 0))
return UV__ERR(errno);
*cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos));
if (!(*cpu_infos))
return UV_ENOMEM;
*count = numcpus;
/* kern.cp_times on FreeBSD i386 gives an array up to maxcpus instead of
* ncpu.
*/
size = sizeof(maxcpus);
if (sysctlbyname(maxcpus_key, &maxcpus, &size, NULL, 0)) {
uv__free(*cpu_infos);
return UV__ERR(errno);
}
size = maxcpus * CPUSTATES * sizeof(long);
cp_times = uv__malloc(size);
if (cp_times == NULL) {
uv__free(*cpu_infos);
return UV_ENOMEM;
}
if (sysctlbyname(cptimes_key, cp_times, &size, NULL, 0)) {
uv__free(cp_times);
uv__free(*cpu_infos);
return UV__ERR(errno);
}
for (i = 0; i < numcpus; i++) {
cpu_info = &(*cpu_infos)[i];
cpu_info->cpu_times.user = (uint64_t)(cp_times[CP_USER+cur]) * multiplier;
cpu_info->cpu_times.nice = (uint64_t)(cp_times[CP_NICE+cur]) * multiplier;
cpu_info->cpu_times.sys = (uint64_t)(cp_times[CP_SYS+cur]) * multiplier;
cpu_info->cpu_times.idle = (uint64_t)(cp_times[CP_IDLE+cur]) * multiplier;
cpu_info->cpu_times.irq = (uint64_t)(cp_times[CP_INTR+cur]) * multiplier;
cpu_info->model = uv__strdup(model);
cpu_info->speed = cpuspeed;
cur+=CPUSTATES;
}
uv__free(cp_times);
return 0;
}
void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count) {
int i;
for (i = 0; i < count; i++) {
uv__free(cpu_infos[i].model);
}
uv__free(cpu_infos);
}