File: loadave.c

package info (click to toggle)
timemon.app 4.2-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 580 kB
  • sloc: objc: 698; ansic: 161; makefile: 23; sh: 9
file content (174 lines) | stat: -rw-r--r-- 3,937 bytes parent folder | download | duplicates (2)
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
#include "loadave.h"

#include <stdio.h>
#include <stdlib.h>

int la_init(unsigned long long *times)
{
  return la_read(times);
}

#if defined( linux ) || defined(__GNU__)

int la_read(unsigned long long *times)
{
  int i;
  unsigned long long c_idle,c_sys,c_nice,c_iow,c_user,c_xxx,c_yyy;
  FILE *f=fopen("/proc/stat","rt");
  if (!f)
    return LA_ERROR;
  i=fscanf(f,"cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu\n",
    &c_user,&c_nice,&c_sys,&c_idle,&c_iow,&c_xxx,&c_yyy);
  if (i<4)
    return LA_ERROR;
  if (i<5)
    c_iow=0;
  fclose(f);
  times[CP_IDLE] = c_idle;
  times[CP_SYS] = c_sys;
  times[CP_NICE] = c_nice;
  times[CP_USER] = c_user;
  times[CP_IOWAIT] = c_iow;
  return LA_NOERR;
}

#elif defined( __FreeBSD__ ) || defined( __FreeBSD_kernel__ )

#include <sys/types.h>
#include <sys/errno.h>
#include <sys/resource.h>	// CPUSTATES
#include <sys/sysctl.h>		// sysctlbyname()
          
int la_read(unsigned long long *times)
{
  const char
    *name = "kern.cp_time";
  int
    cpu_states[CPUSTATES];
  size_t
    nlen = sizeof cpu_states,
    len = nlen;
  int
    err;
  
  err= sysctlbyname(name, &cpu_states, &nlen, NULL, 0);
  if( -1 == err )
  {
    fprintf(stderr, "sysctl(%s...) failed: %s\n", name, strerror(errno));
    exit(errno);
  }
  if( nlen != len )
  {
    fprintf(stderr, "sysctl(%s...) expected %lu, got %lu\n",
                    name, (unsigned long) len, (unsigned long) nlen);
    exit(errno);
  }
  times[CP_IDLE] = cpu_states[4];
  times[CP_SYS] = cpu_states[2];
  times[CP_NICE] = cpu_states[1];
  times[CP_USER] = cpu_states[0];
  times[CP_IOWAIT] = cpu_states[3];
  
  return LA_NOERR;
}

#elif  defined( __NetBSD__ ) || defined ( __OpenBSD__)

#include <sys/types.h>
#include <errno.h>
#include <sys/resource.h>	// CPUSTATES
#include <sys/param.h>
#include <sys/sysctl.h>		// sysctlbyname()
#include <string.h>             // strerror()
#include <machine/cpu.h>        // second level machdep identifiers
          
int la_read(unsigned long long *times)
{
  int mib[2];

#ifdef __NetBSD__
  uint64_t
    cpu_states[CPUSTATES];
#else
  long
    cpu_states[CPUSTATES];
#endif

  size_t
    nlen = sizeof cpu_states,
    len = nlen;
  int
    err;
  
#ifdef __NetBSD__
  mib[0] = CTL_KERN;
  mib[1] = KERN_CP_TIME;
#else
  mib[0] = CTL_KERN;
  mib[1] = KERN_CPTIME;
#endif

  err= sysctl(mib, 2, &cpu_states, &nlen, NULL, 0);
  if( -1 == err )
  {
    fprintf(stderr, "sysctl(...) failed: %s\n", strerror(errno));
    exit(errno);
  }
  if( nlen != len )
  {
    fprintf(stderr, "sysctl(...) expected %lu, got %lu\n",
                    (unsigned long) len, (unsigned long) nlen);
    exit(errno);
  }
  times[CP_IDLE] = cpu_states[4];
  times[CP_SYS] = cpu_states[2];
  times[CP_NICE] = cpu_states[1];
  times[CP_USER] = cpu_states[0];
  times[CP_IOWAIT] = cpu_states[3];
  
  return LA_NOERR;
}

#else 
// Darwin should always be the always the last option...

#include <sys/sysctl.h>

#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <mach/mach_error.h>
#include <mach/mach_port.h>
#include <mach/mach_types.h>

int la_read(unsigned long long *times)
{
  kern_return_t ret;
  host_cpu_load_info_data_t cpuStats;
  mach_msg_type_number_t count;
  static mach_port_t timemon_port = 0L;
  long long totalticks;

  if(timemon_port == 0L)
    {
      timemon_port = mach_host_self();
    }

  count = HOST_CPU_LOAD_INFO_COUNT;
  ret = host_statistics(timemon_port,HOST_CPU_LOAD_INFO,(host_info_t)&cpuStats,&count);

  totalticks = cpuStats.cpu_ticks[CPU_STATE_IDLE] + cpuStats.cpu_ticks[CPU_STATE_USER] +
    cpuStats.cpu_ticks[CPU_STATE_NICE] + cpuStats.cpu_ticks[CPU_STATE_SYSTEM];

  times[CP_IDLE] = cpuStats.cpu_ticks[CPU_STATE_IDLE];
  times[CP_SYS] =  cpuStats.cpu_ticks[CPU_STATE_SYSTEM];
  times[CP_NICE] = cpuStats.cpu_ticks[CPU_STATE_NICE];
  times[CP_USER] = cpuStats.cpu_ticks[CPU_STATE_USER];
  times[CP_IOWAIT] = 0; 
  return LA_NOERR;
}

#endif

void la_finish(void)
{
}