|
160
|
1 /* Copyright libuv project 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 <sys/sysinfo.h>
|
|
|
26 #include <unistd.h>
|
|
|
27
|
|
|
28 int uv_uptime(double* uptime) {
|
|
|
29 struct sysinfo info;
|
|
|
30
|
|
|
31 if (sysinfo(&info) < 0)
|
|
|
32 return UV__ERR(errno);
|
|
|
33
|
|
|
34 *uptime = info.uptime;
|
|
|
35 return 0;
|
|
|
36 }
|
|
|
37
|
|
|
38 int uv_resident_set_memory(size_t* rss) {
|
|
|
39 char buf[1024];
|
|
|
40 const char* s;
|
|
|
41 long val;
|
|
|
42 int rc;
|
|
|
43 int i;
|
|
|
44 struct sysinfo si;
|
|
|
45
|
|
|
46 /* rss: 24th element */
|
|
|
47 rc = uv__slurp("/proc/self/stat", buf, sizeof(buf));
|
|
|
48 if (rc < 0)
|
|
|
49 return rc;
|
|
|
50
|
|
|
51 /* find the last ')' */
|
|
|
52 s = strrchr(buf, ')');
|
|
|
53 if (s == NULL)
|
|
|
54 goto err;
|
|
|
55
|
|
|
56 for (i = 1; i <= 22; i++) {
|
|
|
57 s = strchr(s + 1, ' ');
|
|
|
58 if (s == NULL)
|
|
|
59 goto err;
|
|
|
60 }
|
|
|
61
|
|
|
62 errno = 0;
|
|
|
63 val = strtol(s, NULL, 10);
|
|
|
64 if (val < 0 || errno != 0)
|
|
|
65 goto err;
|
|
|
66
|
|
|
67 do
|
|
|
68 rc = sysinfo(&si);
|
|
|
69 while (rc == -1 && errno == EINTR);
|
|
|
70 if (rc == -1)
|
|
|
71 return UV__ERR(errno);
|
|
|
72
|
|
|
73 *rss = val * si.mem_unit;
|
|
|
74 return 0;
|
|
|
75
|
|
|
76 err:
|
|
|
77 return UV_EINVAL;
|
|
|
78 }
|
|
|
79
|
|
|
80 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
|
|
|
81 /* FIXME: read /proc/stat? */
|
|
|
82 *cpu_infos = NULL;
|
|
|
83 *count = 0;
|
|
|
84 return UV_ENOSYS;
|
|
|
85 }
|
|
|
86
|
|
|
87 uint64_t uv_get_constrained_memory(void) {
|
|
|
88 return 0; /* Memory constraints are unknown. */
|
|
|
89 }
|
|
|
90
|
|
|
91 uint64_t uv_get_available_memory(void) {
|
|
|
92 return uv_get_free_memory();
|
|
|
93 }
|
