xref: /third_party/libuv/src/unix/netbsd.c (revision e66f31c5) 
1/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 * Permission is hereby granted, free of charge, to any person obtaining a copy
3 * of this software and associated documentation files (the "Software"), to
4 * deal in the Software without restriction, including without limitation the
5 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
6 * sell copies of the Software, and to permit persons to whom the Software is
7 * furnished to do so, subject to the following conditions:
8 *
9 * The above copyright notice and this permission notice shall be included in
10 * all copies or substantial portions of the Software.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
17 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
18 * IN THE SOFTWARE.
19 */
20
21#include "uv.h"
22#include "internal.h"
23
24#include <assert.h>
25#include <string.h>
26#include <errno.h>
27
28#include <kvm.h>
29#include <paths.h>
30#include <unistd.h>
31#include <time.h>
32#include <stdlib.h>
33#include <fcntl.h>
34
35#include <sys/resource.h>
36#include <sys/types.h>
37#include <sys/sysctl.h>
38#include <uvm/uvm_extern.h>
39
40#include <unistd.h>
41#include <time.h>
42
43
44int uv__platform_loop_init(uv_loop_t* loop) {
45  return uv__kqueue_init(loop);
46}
47
48
49void uv__platform_loop_delete(uv_loop_t* loop) {
50}
51
52
53void uv_loadavg(double avg[3]) {
54  struct loadavg info;
55  size_t size = sizeof(info);
56  int which[] = {CTL_VM, VM_LOADAVG};
57
58  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0) == -1) return;
59
60  avg[0] = (double) info.ldavg[0] / info.fscale;
61  avg[1] = (double) info.ldavg[1] / info.fscale;
62  avg[2] = (double) info.ldavg[2] / info.fscale;
63}
64
65
66int uv_exepath(char* buffer, size_t* size) {
67  /* Intermediate buffer, retrieving partial path name does not work
68   * As of NetBSD-8(beta), vnode->path translator does not handle files
69   * with longer names than 31 characters.
70   */
71  char int_buf[PATH_MAX];
72  size_t int_size;
73  int mib[4];
74
75  if (buffer == NULL || size == NULL || *size == 0)
76    return UV_EINVAL;
77
78  mib[0] = CTL_KERN;
79  mib[1] = KERN_PROC_ARGS;
80  mib[2] = -1;
81  mib[3] = KERN_PROC_PATHNAME;
82  int_size = ARRAY_SIZE(int_buf);
83
84  if (sysctl(mib, 4, int_buf, &int_size, NULL, 0))
85    return UV__ERR(errno);
86
87  /* Copy string from the intermediate buffer to outer one with appropriate
88   * length.
89   */
90  /* TODO(bnoordhuis) Check uv__strscpy() return value. */
91  uv__strscpy(buffer, int_buf, *size);
92
93  /* Set new size. */
94  *size = strlen(buffer);
95
96  return 0;
97}
98
99
100uint64_t uv_get_free_memory(void) {
101  struct uvmexp info;
102  size_t size = sizeof(info);
103  int which[] = {CTL_VM, VM_UVMEXP};
104
105  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0))
106    return 0;
107
108  return (uint64_t) info.free * sysconf(_SC_PAGESIZE);
109}
110
111
112uint64_t uv_get_total_memory(void) {
113#if defined(HW_PHYSMEM64)
114  uint64_t info;
115  int which[] = {CTL_HW, HW_PHYSMEM64};
116#else
117  unsigned int info;
118  int which[] = {CTL_HW, HW_PHYSMEM};
119#endif
120  size_t size = sizeof(info);
121
122  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0))
123    return 0;
124
125  return (uint64_t) info;
126}
127
128
129uint64_t uv_get_constrained_memory(void) {
130  return 0;  /* Memory constraints are unknown. */
131}
132
133
134uint64_t uv_get_available_memory(void) {
135  return uv_get_free_memory();
136}
137
138
139int uv_resident_set_memory(size_t* rss) {
140  kvm_t *kd = NULL;
141  struct kinfo_proc2 *kinfo = NULL;
142  pid_t pid;
143  int nprocs;
144  int max_size = sizeof(struct kinfo_proc2);
145  int page_size;
146
147  page_size = getpagesize();
148  pid = getpid();
149
150  kd = kvm_open(NULL, NULL, NULL, KVM_NO_FILES, "kvm_open");
151
152  if (kd == NULL) goto error;
153
154  kinfo = kvm_getproc2(kd, KERN_PROC_PID, pid, max_size, &nprocs);
155  if (kinfo == NULL) goto error;
156
157  *rss = kinfo->p_vm_rssize * page_size;
158
159  kvm_close(kd);
160
161  return 0;
162
163error:
164  if (kd) kvm_close(kd);
165  return UV_EPERM;
166}
167
168
169int uv_uptime(double* uptime) {
170  time_t now;
171  struct timeval info;
172  size_t size = sizeof(info);
173  static int which[] = {CTL_KERN, KERN_BOOTTIME};
174
175  if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0))
176    return UV__ERR(errno);
177
178  now = time(NULL);
179
180  *uptime = (double)(now - info.tv_sec);
181  return 0;
182}
183
184
185int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
186  unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK);
187  unsigned int multiplier = ((uint64_t)1000L / ticks);
188  unsigned int cur = 0;
189  uv_cpu_info_t* cpu_info;
190  u_int64_t* cp_times;
191  char model[512];
192  u_int64_t cpuspeed;
193  int numcpus;
194  size_t size;
195  int i;
196
197  size = sizeof(model);
198  if (sysctlbyname("machdep.cpu_brand", &model, &size, NULL, 0) &&
199      sysctlbyname("hw.model", &model, &size, NULL, 0)) {
200    return UV__ERR(errno);
201  }
202
203  size = sizeof(numcpus);
204  if (sysctlbyname("hw.ncpu", &numcpus, &size, NULL, 0))
205    return UV__ERR(errno);
206  *count = numcpus;
207
208  /* Only i386 and amd64 have machdep.tsc_freq */
209  size = sizeof(cpuspeed);
210  if (sysctlbyname("machdep.tsc_freq", &cpuspeed, &size, NULL, 0))
211    cpuspeed = 0;
212
213  size = numcpus * CPUSTATES * sizeof(*cp_times);
214  cp_times = uv__malloc(size);
215  if (cp_times == NULL)
216    return UV_ENOMEM;
217
218  if (sysctlbyname("kern.cp_time", cp_times, &size, NULL, 0))
219    return UV__ERR(errno);
220
221  *cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos));
222  if (!(*cpu_infos)) {
223    uv__free(cp_times);
224    uv__free(*cpu_infos);
225    return UV_ENOMEM;
226  }
227
228  for (i = 0; i < numcpus; i++) {
229    cpu_info = &(*cpu_infos)[i];
230    cpu_info->cpu_times.user = (uint64_t)(cp_times[CP_USER+cur]) * multiplier;
231    cpu_info->cpu_times.nice = (uint64_t)(cp_times[CP_NICE+cur]) * multiplier;
232    cpu_info->cpu_times.sys = (uint64_t)(cp_times[CP_SYS+cur]) * multiplier;
233    cpu_info->cpu_times.idle = (uint64_t)(cp_times[CP_IDLE+cur]) * multiplier;
234    cpu_info->cpu_times.irq = (uint64_t)(cp_times[CP_INTR+cur]) * multiplier;
235    cpu_info->model = uv__strdup(model);
236    cpu_info->speed = (int)(cpuspeed/(uint64_t) 1e6);
237    cur += CPUSTATES;
238  }
239  uv__free(cp_times);
240  return 0;
241}
242
243int uv__random_sysctl(void* buf, size_t len) {
244  static int name[] = {CTL_KERN, KERN_ARND};
245  size_t count, req;
246  unsigned char* p;
247
248  p = buf;
249  while (len) {
250    req = len < 32 ? len : 32;
251    count = req;
252
253    if (sysctl(name, ARRAY_SIZE(name), p, &count, NULL, 0) == -1)
254      return UV__ERR(errno);
255
256    if (count != req)
257      return UV_EIO;  /* Can't happen. */
258
259    p += count;
260    len -= count;
261  }
262
263  return 0;
264}
265