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[ThirdParty] Added libuv
author June Park <parkjune1995@gmail.com>
date Wed, 14 Jan 2026 19:39:52 -0800
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159:05cf9467a1c3 160:948de3f54cea
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 <paths.h>
29 #if defined(__DragonFly__)
30 # include <sys/event.h>
31 # include <sys/kinfo.h>
32 #else
33 # include <sys/user.h>
34 #endif
35 #include <sys/types.h>
36 #include <sys/resource.h>
37 #include <sys/sysctl.h>
38 #include <vm/vm_param.h> /* VM_LOADAVG */
39 #include <time.h>
40 #include <stdlib.h>
41 #include <unistd.h> /* sysconf */
42 #include <fcntl.h>
43
44 #ifndef CPUSTATES
45 # define CPUSTATES 5U
46 #endif
47 #ifndef CP_USER
48 # define CP_USER 0
49 # define CP_NICE 1
50 # define CP_SYS 2
51 # define CP_IDLE 3
52 # define CP_INTR 4
53 #endif
54
55
56 int uv__platform_loop_init(uv_loop_t* loop) {
57 return uv__kqueue_init(loop);
58 }
59
60
61 void uv__platform_loop_delete(uv_loop_t* loop) {
62 }
63
64 int uv_exepath(char* buffer, size_t* size) {
65 char abspath[PATH_MAX * 2 + 1];
66 int mib[4];
67 size_t abspath_size;
68
69 if (buffer == NULL || size == NULL || *size == 0)
70 return UV_EINVAL;
71
72 mib[0] = CTL_KERN;
73 mib[1] = KERN_PROC;
74 mib[2] = KERN_PROC_PATHNAME;
75 mib[3] = -1;
76
77 abspath_size = sizeof abspath;
78 if (sysctl(mib, ARRAY_SIZE(mib), abspath, &abspath_size, NULL, 0))
79 return UV__ERR(errno);
80
81 assert(abspath_size > 0);
82 abspath_size -= 1;
83 *size -= 1;
84
85 if (*size > abspath_size)
86 *size = abspath_size;
87
88 memcpy(buffer, abspath, *size);
89 buffer[*size] = '\0';
90
91 return 0;
92 }
93
94 uint64_t uv_get_free_memory(void) {
95 int freecount;
96 size_t size = sizeof(freecount);
97
98 if (sysctlbyname("vm.stats.vm.v_free_count", &freecount, &size, NULL, 0))
99 return 0;
100
101 return (uint64_t) freecount * sysconf(_SC_PAGESIZE);
102
103 }
104
105
106 uint64_t uv_get_total_memory(void) {
107 unsigned long info;
108 int which[] = {CTL_HW, HW_PHYSMEM};
109
110 size_t size = sizeof(info);
111
112 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0))
113 return 0;
114
115 return (uint64_t) info;
116 }
117
118
119 uint64_t uv_get_constrained_memory(void) {
120 return 0; /* Memory constraints are unknown. */
121 }
122
123
124 uint64_t uv_get_available_memory(void) {
125 return uv_get_free_memory();
126 }
127
128
129 void uv_loadavg(double avg[3]) {
130 struct loadavg info;
131 size_t size = sizeof(info);
132 int which[] = {CTL_VM, VM_LOADAVG};
133
134 if (sysctl(which, ARRAY_SIZE(which), &info, &size, NULL, 0) < 0) return;
135
136 avg[0] = (double) info.ldavg[0] / info.fscale;
137 avg[1] = (double) info.ldavg[1] / info.fscale;
138 avg[2] = (double) info.ldavg[2] / info.fscale;
139 }
140
141
142 int uv_resident_set_memory(size_t* rss) {
143 struct kinfo_proc kinfo;
144 size_t page_size;
145 size_t kinfo_size;
146 int mib[4];
147
148 mib[0] = CTL_KERN;
149 mib[1] = KERN_PROC;
150 mib[2] = KERN_PROC_PID;
151 mib[3] = getpid();
152
153 kinfo_size = sizeof(kinfo);
154
155 if (sysctl(mib, ARRAY_SIZE(mib), &kinfo, &kinfo_size, NULL, 0))
156 return UV__ERR(errno);
157
158 page_size = getpagesize();
159
160 #ifdef __DragonFly__
161 *rss = kinfo.kp_vm_rssize * page_size;
162 #else
163 *rss = kinfo.ki_rssize * page_size;
164 #endif
165
166 return 0;
167 }
168
169
170 int uv_uptime(double* uptime) {
171 int r;
172 struct timespec sp;
173 r = clock_gettime(CLOCK_MONOTONIC, &sp);
174 if (r)
175 return UV__ERR(errno);
176
177 *uptime = sp.tv_sec;
178 return 0;
179 }
180
181
182 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
183 unsigned int ticks = (unsigned int)sysconf(_SC_CLK_TCK),
184 multiplier = ((uint64_t)1000L / ticks), cpuspeed, maxcpus,
185 cur = 0;
186 uv_cpu_info_t* cpu_info;
187 const char* maxcpus_key;
188 const char* cptimes_key;
189 const char* model_key;
190 char model[512];
191 long* cp_times;
192 int numcpus;
193 size_t size;
194 int i;
195
196 #if defined(__DragonFly__)
197 /* This is not quite correct but DragonFlyBSD doesn't seem to have anything
198 * comparable to kern.smp.maxcpus or kern.cp_times (kern.cp_time is a total,
199 * not per CPU). At least this stops uv_cpu_info() from failing completely.
200 */
201 maxcpus_key = "hw.ncpu";
202 cptimes_key = "kern.cp_time";
203 #else
204 maxcpus_key = "kern.smp.maxcpus";
205 cptimes_key = "kern.cp_times";
206 #endif
207
208 #if defined(__arm__) || defined(__aarch64__)
209 /* The key hw.model and hw.clockrate are not available on FreeBSD ARM. */
210 model_key = "hw.machine";
211 cpuspeed = 0;
212 #else
213 model_key = "hw.model";
214
215 size = sizeof(cpuspeed);
216 if (sysctlbyname("hw.clockrate", &cpuspeed, &size, NULL, 0))
217 return -errno;
218 #endif
219
220 size = sizeof(model);
221 if (sysctlbyname(model_key, &model, &size, NULL, 0))
222 return UV__ERR(errno);
223
224 size = sizeof(numcpus);
225 if (sysctlbyname("hw.ncpu", &numcpus, &size, NULL, 0))
226 return UV__ERR(errno);
227
228 *cpu_infos = uv__malloc(numcpus * sizeof(**cpu_infos));
229 if (!(*cpu_infos))
230 return UV_ENOMEM;
231
232 *count = numcpus;
233
234 /* kern.cp_times on FreeBSD i386 gives an array up to maxcpus instead of
235 * ncpu.
236 */
237 size = sizeof(maxcpus);
238 if (sysctlbyname(maxcpus_key, &maxcpus, &size, NULL, 0)) {
239 uv__free(*cpu_infos);
240 return UV__ERR(errno);
241 }
242
243 size = maxcpus * CPUSTATES * sizeof(long);
244
245 cp_times = uv__malloc(size);
246 if (cp_times == NULL) {
247 uv__free(*cpu_infos);
248 return UV_ENOMEM;
249 }
250
251 if (sysctlbyname(cptimes_key, cp_times, &size, NULL, 0)) {
252 uv__free(cp_times);
253 uv__free(*cpu_infos);
254 return UV__ERR(errno);
255 }
256
257 for (i = 0; i < numcpus; i++) {
258 cpu_info = &(*cpu_infos)[i];
259
260 cpu_info->cpu_times.user = (uint64_t)(cp_times[CP_USER+cur]) * multiplier;
261 cpu_info->cpu_times.nice = (uint64_t)(cp_times[CP_NICE+cur]) * multiplier;
262 cpu_info->cpu_times.sys = (uint64_t)(cp_times[CP_SYS+cur]) * multiplier;
263 cpu_info->cpu_times.idle = (uint64_t)(cp_times[CP_IDLE+cur]) * multiplier;
264 cpu_info->cpu_times.irq = (uint64_t)(cp_times[CP_INTR+cur]) * multiplier;
265
266 cpu_info->model = uv__strdup(model);
267 cpu_info->speed = cpuspeed;
268
269 cur+=CPUSTATES;
270 }
271
272 uv__free(cp_times);
273 return 0;
274 }
275
276
277 ssize_t
278 uv__fs_copy_file_range(int fd_in,
279 off_t* off_in,
280 int fd_out,
281 off_t* off_out,
282 size_t len,
283 unsigned int flags)
284 {
285 #if __FreeBSD__ >= 13 && !defined(__DragonFly__)
286 return copy_file_range(fd_in, off_in, fd_out, off_out, len, flags);
287 #else
288 return errno = ENOSYS, -1;
289 #endif
290 }