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 #define _GNU_SOURCE 1
23
24 #include "uv.h"
25 #include "internal.h"
26
27 #include <hurd.h>
28 #include <hurd/process.h>
29 #include <mach/task_info.h>
30 #include <mach/vm_statistics.h>
31 #include <mach/vm_param.h>
32
33 #include <inttypes.h>
34 #include <stddef.h>
35 #include <unistd.h>
36 #include <string.h>
37 #include <limits.h>
38
uv_exepath(char * buffer,size_t * size)39 int uv_exepath(char* buffer, size_t* size) {
40 kern_return_t err;
41 /* XXX in current Hurd, strings are char arrays of 1024 elements */
42 string_t exepath;
43 ssize_t copied;
44
45 if (buffer == NULL || size == NULL || *size == 0)
46 return UV_EINVAL;
47
48 if (*size - 1 > 0) {
49 /* XXX limited length of buffer in current Hurd, this API will probably
50 * evolve in the future */
51 err = proc_get_exe(getproc(), getpid(), exepath);
52
53 if (err)
54 return UV__ERR(err);
55 }
56
57 copied = uv__strscpy(buffer, exepath, *size);
58
59 /* do not return error on UV_E2BIG failure */
60 *size = copied < 0 ? strlen(buffer) : (size_t) copied;
61
62 return 0;
63 }
64
uv_resident_set_memory(size_t * rss)65 int uv_resident_set_memory(size_t* rss) {
66 kern_return_t err;
67 struct task_basic_info bi;
68 mach_msg_type_number_t count;
69
70 count = TASK_BASIC_INFO_COUNT;
71 err = task_info(mach_task_self(), TASK_BASIC_INFO,
72 (task_info_t) &bi, &count);
73
74 if (err)
75 return UV__ERR(err);
76
77 *rss = bi.resident_size;
78
79 return 0;
80 }
81
uv_get_free_memory(void)82 uint64_t uv_get_free_memory(void) {
83 kern_return_t err;
84 struct vm_statistics vmstats;
85
86 err = vm_statistics(mach_task_self(), &vmstats);
87
88 if (err)
89 return 0;
90
91 return vmstats.free_count * vm_page_size;
92 }
93
94
uv_get_total_memory(void)95 uint64_t uv_get_total_memory(void) {
96 kern_return_t err;
97 host_basic_info_data_t hbi;
98 mach_msg_type_number_t cnt;
99
100 cnt = HOST_BASIC_INFO_COUNT;
101 err = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t) &hbi, &cnt);
102
103 if (err)
104 return 0;
105
106 return hbi.memory_size;
107 }
108
109
uv_uptime(double * uptime)110 int uv_uptime(double* uptime) {
111 char buf[128];
112
113 /* Try /proc/uptime first */
114 if (0 == uv__slurp("/proc/uptime", buf, sizeof(buf)))
115 if (1 == sscanf(buf, "%lf", uptime))
116 return 0;
117
118 /* Reimplement here code from procfs to calculate uptime if not mounted? */
119
120 return UV__ERR(EIO);
121 }
122
uv_loadavg(double avg[3])123 void uv_loadavg(double avg[3]) {
124 char buf[128]; /* Large enough to hold all of /proc/loadavg. */
125
126 if (0 == uv__slurp("/proc/loadavg", buf, sizeof(buf)))
127 if (3 == sscanf(buf, "%lf %lf %lf", &avg[0], &avg[1], &avg[2]))
128 return;
129
130 /* Reimplement here code from procfs to calculate loadavg if not mounted? */
131 }
132
133
uv_cpu_info(uv_cpu_info_t ** cpu_infos,int * count)134 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
135 kern_return_t err;
136 host_basic_info_data_t hbi;
137 mach_msg_type_number_t cnt;
138
139 /* Get count of cpus */
140 cnt = HOST_BASIC_INFO_COUNT;
141 err = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t) &hbi, &cnt);
142
143 if (err) {
144 err = UV__ERR(err);
145 goto abort;
146 }
147
148 /* XXX not implemented on the Hurd */
149 *cpu_infos = uv__calloc(hbi.avail_cpus, sizeof(**cpu_infos));
150 if (*cpu_infos == NULL) {
151 err = UV_ENOMEM;
152 goto abort;
153 }
154
155 *count = hbi.avail_cpus;
156
157 return 0;
158
159 abort:
160 *cpu_infos = NULL;
161 *count = 0;
162 return err;
163 }
164
uv_get_constrained_memory(void)165 uint64_t uv_get_constrained_memory(void) {
166 return 0; /* Memory constraints are unknown. */
167 }
168
169
uv_get_available_memory(void)170 uint64_t uv_get_available_memory(void) {
171 return uv_get_free_memory();
172 }
173
