1 /* Copyright libuv contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 #include "uv.h"
23 #include "internal.h"
24
25 #include <string.h>
26 #include <sys/process.h>
27 #include <sys/neutrino.h>
28 #include <sys/memmsg.h>
29 #include <sys/syspage.h>
30 #include <sys/procfs.h>
31
32 static void
get_mem_info(uint64_t * totalmem,uint64_t * freemem)33 get_mem_info(uint64_t* totalmem, uint64_t* freemem) {
34 mem_info_t msg;
35
36 memset(&msg, 0, sizeof(msg));
37 msg.i.type = _MEM_INFO;
38 msg.i.fd = -1;
39
40 if (MsgSend(MEMMGR_COID, &msg.i, sizeof(msg.i), &msg.o, sizeof(msg.o))
41 != -1) {
42 *totalmem = msg.o.info.__posix_tmi_total;
43 *freemem = msg.o.info.posix_tmi_length;
44 } else {
45 *totalmem = 0;
46 *freemem = 0;
47 }
48 }
49
50
uv_loadavg(double avg[3])51 void uv_loadavg(double avg[3]) {
52 avg[0] = 0.0;
53 avg[1] = 0.0;
54 avg[2] = 0.0;
55 }
56
57
uv_exepath(char * buffer,size_t * size)58 int uv_exepath(char* buffer, size_t* size) {
59 char path[PATH_MAX];
60 if (buffer == NULL || size == NULL || *size == 0)
61 return UV_EINVAL;
62
63 realpath(_cmdname(NULL), path);
64 strlcpy(buffer, path, *size);
65 *size = strlen(buffer);
66 return 0;
67 }
68
69
uv_get_free_memory(void)70 uint64_t uv_get_free_memory(void) {
71 uint64_t totalmem;
72 uint64_t freemem;
73 get_mem_info(&totalmem, &freemem);
74 return freemem;
75 }
76
77
uv_get_total_memory(void)78 uint64_t uv_get_total_memory(void) {
79 uint64_t totalmem;
80 uint64_t freemem;
81 get_mem_info(&totalmem, &freemem);
82 return totalmem;
83 }
84
85
uv_get_constrained_memory(void)86 uint64_t uv_get_constrained_memory(void) {
87 return 0;
88 }
89
90
uv_get_available_memory(void)91 uint64_t uv_get_available_memory(void) {
92 return uv_get_free_memory();
93 }
94
95
uv_resident_set_memory(size_t * rss)96 int uv_resident_set_memory(size_t* rss) {
97 int fd;
98 procfs_asinfo asinfo;
99
100 fd = uv__open_cloexec("/proc/self/ctl", O_RDONLY);
101 if (fd == -1)
102 return UV__ERR(errno);
103
104 if (devctl(fd, DCMD_PROC_ASINFO, &asinfo, sizeof(asinfo), 0) == -1) {
105 uv__close(fd);
106 return UV__ERR(errno);
107 }
108
109 uv__close(fd);
110 *rss = asinfo.rss;
111 return 0;
112 }
113
114
uv_uptime(double * uptime)115 int uv_uptime(double* uptime) {
116 struct qtime_entry* qtime = _SYSPAGE_ENTRY(_syspage_ptr, qtime);
117 *uptime = (qtime->nsec / 1000000000.0);
118 return 0;
119 }
120
121
uv_cpu_info(uv_cpu_info_t ** cpu_infos,int * count)122 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
123 struct cpuinfo_entry* cpuinfo =
124 (struct cpuinfo_entry*)_SYSPAGE_ENTRY(_syspage_ptr, new_cpuinfo);
125 size_t cpuinfo_size = _SYSPAGE_ELEMENT_SIZE(_syspage_ptr, cpuinfo);
126 struct strings_entry* strings = _SYSPAGE_ENTRY(_syspage_ptr, strings);
127 int num_cpus = _syspage_ptr->num_cpu;
128 int i;
129
130 *count = num_cpus;
131 *cpu_infos = uv__malloc(num_cpus * sizeof(**cpu_infos));
132 if (*cpu_infos == NULL)
133 return UV_ENOMEM;
134
135 for (i = 0; i < num_cpus; i++) {
136 (*cpu_infos)[i].model = strdup(&strings->data[cpuinfo->name]);
137 (*cpu_infos)[i].speed = cpuinfo->speed;
138 SYSPAGE_ARRAY_ADJ_OFFSET(cpuinfo, cpuinfo, cpuinfo_size);
139 }
140
141 return 0;
142 }
143
