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
|
unit systemunit;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Math;
function cpuUtilization: extended;
function numCpus: int64;
function momentanFreieCpus: int64;
function belegterSpeicher: int64;
function minCache: int64;
function shellSubst(s: string): string;
function mkTemp(s: string): string;
implementation
uses
process, lowlevelunit;
var _cpuLastUsed,_cpuLastIdle: int64;
function cpuUtilization: extended;
var
procstat: textfile;
s: string;
used,idle: int64;
i: integer;
begin
result:=0;
s:='';
assignfile(procstat,'/proc/stat');
reset(procstat);
while not eof(procstat) do begin
readln(procstat,s);
if pos('cpu ',s)=1 then break;
end;
closefile(procstat);
if pos('cpu ',s)<>1 then exit;
delete(s,1,pos(' ',s));
s:=trim(s);
used:=0;
idle:=0;
for i:=0 to 3 do begin
used:=used+idle;
idle:=strtoint(copy(s,1,pos(' ',s)-1));
delete(s,1,pos(' ',s));
s:=trim(s);
end;
result:=(used-_cpuLastUsed)/max(1,used-_cpuLastUsed + idle-_cpuLastIdle);
_cpuLastUsed:=used;
_cpuLastIdle:=idle;
end;
function numCpus: int64;
var
procstat: textfile;
s: string;
begin
result:=0;
s:='';
assignfile(procstat,'/proc/stat');
reset(procstat);
while not eof(procstat) do begin
readln(procstat,s);
if (pos('cpu',s)=1) and
(pos('cpu ',s)<>1) then
inc(result);
end;
closefile(procstat);
end;
function momentanFreieCpus: int64;
begin
result:=floor(numCpus*(1-cpuUtilization));
end;
function belegterSpeicher: int64;
var
f: textFile;
s: string;
begin
s:='/proc/'+inttostr(getProcessId)+'/smaps';
result:=0;
if not fileexists(s) then exit;
assignfile(f,s);
reset(f);
while not eof(f) do begin
readln(f,s);
if (leftStr(s,4)='Rss:') and (rightStr(s,3)=' kB') then
result:=result+strtoint(trim(copy(s,5,length(s)-4-3)));
end;
closefile(f);
end;
function minCache: int64;
var
f: textFile;
s: string;
begin
s:='/proc/cpuinfo';
result:=0;
if not fileexists(s) then exit;
assignfile(f,s);
reset(f);
while not eof(f) do begin
readln(f,s);
if (leftStr(s,10)='cache size') and (rightStr(s,3)=' kB') then begin
delete(s,1,pos(':',s));
delete(s,length(s)-2,3);
s:=trim(s);
if result=0 then result:=strtoint(s)
else result:=min(result,strtoint(s));
end;
end;
closefile(f);
end;
function shellSubst(s: string): string;
var
name: string;
begin
result:=s;
while pos('${',result)>0 do begin
s:=leftStr(result,pos('${',result)-1);
delete(result,1,pos('${',result)-1+length('${'));
name:=leftStr(result,pos('}',result)-1);
delete(result,1,length(name+'}'));
result:=s+GetEnvironmentVariable(name)+result;
end;
end;
function mkTemp(s: string): string;
var
args: array of string;
begin
setlength(args,0);
while s<>'' do begin
setlength(args,length(args)+1);
args[length(args)-1]:=erstesArgument(s);
end;
result:='';
if not runCommand('/usr/bin/mktemp',args,result) then
raise exception.create('Fehler beim Ausführen von ''/usr/bin/mktemp '+s+'''!');
result:=trim(result);
end;
begin
_cpuLastUsed:=0;
_cpuLastIdle:=0;
cpuUtilization;
end.
|
