1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "os.h"
// ----------------------------------------------------------------------------
// system functions
// to retrieve settings of the system
int processors = 1;
long get_system_cpus(void) {
processors = 1;
#ifdef __APPLE__
int32_t tmp_processors;
if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
error("Assuming system has %d processors.", processors);
} else {
processors = tmp_processors;
}
return processors;
#elif __FreeBSD__
int32_t tmp_processors;
if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
error("Assuming system has %d processors.", processors);
} else {
processors = tmp_processors;
}
return processors;
#else
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
if(!ff) {
error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
return processors;
}
ff = procfile_readall(ff);
if(!ff) {
error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
return processors;
}
processors = 0;
unsigned int i;
for(i = 0; i < procfile_lines(ff); i++) {
if(!procfile_linewords(ff, i)) continue;
if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) processors++;
}
processors--;
if(processors < 1) processors = 1;
procfile_close(ff);
debug(D_SYSTEM, "System has %d processors.", processors);
return processors;
#endif /* __APPLE__, __FreeBSD__ */
}
pid_t pid_max = 32768;
pid_t get_system_pid_max(void) {
#ifdef __APPLE__
// As we currently do not know a solution to query pid_max from the os
// we use the number defined in bsd/sys/proc_internal.h in XNU sources
pid_max = 99999;
return pid_max;
#elif __FreeBSD__
int32_t tmp_pid_max;
if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) {
pid_max = 99999;
error("Assuming system's maximum pid is %d.", pid_max);
} else {
pid_max = tmp_pid_max;
}
return pid_max;
#else
static char read = 0;
if(unlikely(read)) return pid_max;
read = 1;
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix);
unsigned long long max = 0;
if(read_single_number_file(filename, &max) != 0) {
error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
return pid_max;
}
if(!max) {
error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max);
return pid_max;
}
pid_max = (pid_t) max;
return pid_max;
#endif /* __APPLE__, __FreeBSD__ */
}
unsigned int system_hz;
void get_system_HZ(void) {
long ticks;
if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
error("Cannot get system clock ticks");
}
system_hz = (unsigned int) ticks;
}
// =====================================================================================================================
// FreeBSD
#if (TARGET_OS == OS_FREEBSD)
int getsysctl_by_name(const char *name, void *ptr, size_t len) {
size_t nlen = len;
if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
return 1;
}
if (unlikely(nlen != len)) {
error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
return 1;
}
return 0;
}
int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len) {
size_t nlen = len;
if (unlikely(!mib[0]))
if (unlikely(getsysctl_mib(name, mib, miblen)))
return 1;
if (unlikely(sysctl(mib, miblen, ptr, &nlen, NULL, 0) == -1)) {
error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
return 1;
}
if (unlikely(nlen != len)) {
error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
return 1;
}
return 0;
}
int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len) {
size_t nlen = *len;
if (unlikely(!mib[0]))
if (unlikely(getsysctl_mib(name, mib, miblen)))
return 1;
if (unlikely(sysctl(mib, miblen, ptr, len, NULL, 0) == -1)) {
error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
return 1;
}
if (unlikely(ptr != NULL && nlen != *len)) {
error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)*len, (unsigned long)nlen);
return 1;
}
return 0;
}
int getsysctl_mib(const char *name, int *mib, size_t len) {
size_t nlen = len;
if (unlikely(sysctlnametomib(name, mib, &nlen) == -1)) {
error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno));
return 1;
}
if (unlikely(nlen != len)) {
error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
return 1;
}
return 0;
}
#endif
// =====================================================================================================================
// MacOS
#if (TARGET_OS == OS_MACOS)
int getsysctl_by_name(const char *name, void *ptr, size_t len) {
size_t nlen = len;
if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) {
error("MACOS: sysctl(%s...) failed: %s", name, strerror(errno));
return 1;
}
if (unlikely(nlen != len)) {
error("MACOS: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen);
return 1;
}
return 0;
}
#endif // (TARGET_OS == OS_MACOS)
|
