Blame src/unix/freebsd.c

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include "uv.h"
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#include "internal.h"
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#include <assert.h>
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#include <string.h>
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#include <errno.h>
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#include <paths.h>
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#include <sys/user.h>
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#include <sys/types.h>
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#include <sys/resource.h>
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#include <sys/sysctl.h>
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#include <vm/vm_param.h> /* VM_LOADAVG */
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#include <time.h>
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#include <stdlib.h>
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#include <unistd.h> /* sysconf */
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#include <fcntl.h>
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#ifndef CPUSTATES
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# define CPUSTATES 5U
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#endif
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#ifndef CP_USER
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# define CP_USER 0
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# define CP_NICE 1
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# define CP_SYS 2
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# define CP_IDLE 3
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# define CP_INTR 4
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#endif
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int uv__platform_loop_init(uv_loop_t* loop) {
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  return uv__kqueue_init(loop);
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}
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void uv__platform_loop_delete(uv_loop_t* loop) {
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}
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#ifdef __DragonFly__
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int uv_exepath(char* buffer, size_t* size) {
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  char abspath[PATH_MAX * 2 + 1];
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  ssize_t abspath_size;
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  if (buffer == NULL || size == NULL || *size == 0)
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    return UV_EINVAL;
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  abspath_size = readlink("/proc/curproc/file", abspath, sizeof(abspath));
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  if (abspath_size < 0)
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    return UV__ERR(errno);
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  assert(abspath_size > 0);
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  *size -= 1;
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  if (*size > abspath_size)
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    *size = abspath_size;
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  memcpy(buffer, abspath, *size);
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  buffer[*size] = '\0';
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  return 0;
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}
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#else
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int uv_exepath(char* buffer, size_t* size) {
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  char abspath[PATH_MAX * 2 + 1];
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  int mib[4];
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  size_t abspath_size;
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  if (buffer == NULL || size == NULL || *size == 0)
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    return UV_EINVAL;
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  mib[0] = CTL_KERN;
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  mib[1] = KERN_PROC;
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  mib[2] = KERN_PROC_PATHNAME;
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  mib[3] = -1;
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  abspath_size = sizeof abspath;
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  if (sysctl(mib, ARRAY_SIZE(mib), abspath, &abspath_size, NULL, 0))
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    return UV__ERR(errno);
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  assert(abspath_size > 0);
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  abspath_size -= 1;
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  *size -= 1;
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  if (*size > abspath_size)
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    *size = abspath_size;
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  memcpy(buffer, abspath, *size);
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  buffer[*size] = '\0';
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  return 0;
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}
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#endif
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uint64_t uv_get_free_memory(void) {
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  int freecount;
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  size_t size = sizeof(freecount);
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  if (sysctlbyname("vm.stats.vm.v_free_count", &freecount, &size, NULL, 0))
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    return UV__ERR(errno);
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  return (uint64_t) freecount * sysconf(_SC_PAGESIZE);
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}
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uint64_t uv_get_total_memory(void) {
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  unsigned long info;
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  int which[] = {CTL_HW, HW_PHYSMEM};
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  size_t size = sizeof(info);
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  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0))
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    return UV__ERR(errno);
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  return (uint64_t) info;
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}
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uint64_t uv_get_constrained_memory(void) {
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  return 0;  /* Memory constraints are unknown. */
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}
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void uv_loadavg(double avg[3]) {
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  struct loadavg info;
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  size_t size = sizeof(info);
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  int which[] = {CTL_VM, VM_LOADAVG};
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  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0) < 0) return;
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  avg[0] = (double) info.ldavg[0] / info.fscale;
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  avg[1] = (double) info.ldavg[1] / info.fscale;
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  avg[2] = (double) info.ldavg[2] / info.fscale;
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}
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int uv_resident_set_memory(size_t* rss) {
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  struct kinfo_proc kinfo;
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  size_t page_size;
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  size_t kinfo_size;
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  int mib[4];
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  mib[0] = CTL_KERN;
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  mib[1] = KERN_PROC;
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  mib[2] = KERN_PROC_PID;
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  mib[3] = getpid();
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  kinfo_size = sizeof(kinfo);
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  if (sysctl(mib, ARRAY_SIZE(mib), &kinfo, &kinfo_size, NULL, 0))
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    return UV__ERR(errno);
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  page_size = getpagesize();
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#ifdef __DragonFly__
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  *rss = kinfo.kp_vm_rssize * page_size;
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#else
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  *rss = kinfo.ki_rssize * page_size;
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#endif
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  return 0;
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}
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int uv_uptime(double* uptime) {
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  int r;
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  struct timespec sp;
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  r = clock_gettime(CLOCK_MONOTONIC, &sp);
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  if (r)
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    return UV__ERR(errno);
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  *uptime = sp.tv_sec;
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  return 0;
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}
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int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
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  unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),
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               multiplier = ((uint64_t)1000L / ticks), cpuspeed, maxcpus,
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               cur = 0;
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  uv_cpu_info_t* cpu_info;
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  const char* maxcpus_key;
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  const char* cptimes_key;
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  const char* model_key;
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  char model[512];
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  long* cp_times;
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  int numcpus;
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  size_t size;
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  int i;
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#if defined(__DragonFly__)
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  /* This is not quite correct but DragonFlyBSD doesn't seem to have anything
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   * comparable to kern.smp.maxcpus or kern.cp_times (kern.cp_time is a total,
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   * not per CPU). At least this stops uv_cpu_info() from failing completely.
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   */
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  maxcpus_key = "hw.ncpu";
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  cptimes_key = "kern.cp_time";
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#else
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  maxcpus_key = "kern.smp.maxcpus";
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  cptimes_key = "kern.cp_times";
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#endif
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#if defined(__arm__) || defined(__aarch64__)
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  /* The key hw.model and hw.clockrate are not available on FreeBSD ARM. */
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  model_key = "hw.machine";
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  cpuspeed = 0;
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#else
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  model_key = "hw.model";
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  size = sizeof(cpuspeed);
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  if (sysctlbyname("hw.clockrate", &cpuspeed, &size, NULL, 0))
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    return -errno;
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#endif
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  size = sizeof(model);
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  if (sysctlbyname(model_key, &model, &size, NULL, 0))
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    return UV__ERR(errno);
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  size = sizeof(numcpus);
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  if (sysctlbyname("hw.ncpu", &numcpus, &size, NULL, 0))
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    return UV__ERR(errno);
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  *cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos));
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  if (!(*cpu_infos))
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    return UV_ENOMEM;
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  *count = numcpus;
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  /* kern.cp_times on FreeBSD i386 gives an array up to maxcpus instead of
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   * ncpu.
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   */
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  size = sizeof(maxcpus);
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  if (sysctlbyname(maxcpus_key, &maxcpus, &size, NULL, 0)) {
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    uv__free(*cpu_infos);
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    return UV__ERR(errno);
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  }
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  size = maxcpus * CPUSTATES * sizeof(long);
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  cp_times = uv__malloc(size);
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  if (cp_times == NULL) {
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    uv__free(*cpu_infos);
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    return UV_ENOMEM;
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  }
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  if (sysctlbyname(cptimes_key, cp_times, &size, NULL, 0)) {
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    uv__free(cp_times);
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    uv__free(*cpu_infos);
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    return UV__ERR(errno);
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  }
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  for (i = 0; i < numcpus; i++) {
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    cpu_info = &(*cpu_infos)[i];
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    cpu_info->cpu_times.user = (uint64_t)(cp_times[CP_USER+cur]) * multiplier;
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    cpu_info->cpu_times.nice = (uint64_t)(cp_times[CP_NICE+cur]) * multiplier;
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    cpu_info->cpu_times.sys = (uint64_t)(cp_times[CP_SYS+cur]) * multiplier;
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    cpu_info->cpu_times.idle = (uint64_t)(cp_times[CP_IDLE+cur]) * multiplier;
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    cpu_info->cpu_times.irq = (uint64_t)(cp_times[CP_INTR+cur]) * multiplier;
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    cpu_info->model = uv__strdup(model);
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    cpu_info->speed = cpuspeed;
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    cur+=CPUSTATES;
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  }
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  uv__free(cp_times);
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  return 0;
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}
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int uv__sendmmsg(int fd,
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                 struct uv__mmsghdr* mmsg,
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                 unsigned int vlen,
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                 unsigned int flags) {
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#if __FreeBSD__ >= 11
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  return sendmmsg(fd, mmsg, vlen, flags);
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#else
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  return errno = ENOSYS, -1;
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#endif
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}
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int uv__recvmmsg(int fd,
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                 struct uv__mmsghdr* mmsg,
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                 unsigned int vlen,
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                 unsigned int flags,
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                 struct timespec* timeout) {
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#if __FreeBSD__ >= 11
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  return recvmmsg(fd, mmsg, vlen, flags, timeout);
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#else
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  return errno = ENOSYS, -1;
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#endif
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}