| 3 |
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
| 4 |
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
| 5 |
|
|
| 6 |
< |
<refentry id="cpu_percent_usage"> |
| 6 |
> |
<refentry id="sg_get_cpu_stats"> |
| 7 |
|
|
| 8 |
|
<refentryinfo> |
| 9 |
|
<date>$Date$</date> |
| 10 |
|
<releaseinfo>$Id$</releaseinfo> |
| 11 |
|
</refentryinfo> |
| 12 |
< |
|
| 12 |
> |
|
| 13 |
|
<refmeta> |
| 14 |
< |
<refentrytitle>cpu_percent_usage</refentrytitle> |
| 14 |
> |
<refentrytitle>sg_get_cpu_stats</refentrytitle> |
| 15 |
|
<manvolnum>3</manvolnum> |
| 16 |
|
<refmiscinfo>i-scream</refmiscinfo> |
| 17 |
|
</refmeta> |
| 18 |
< |
|
| 18 |
> |
|
| 19 |
|
<refnamediv> |
| 20 |
< |
<refname>cpu_percent_usage</refname> |
| 21 |
< |
<refname>get_cpu_totals</refname> |
| 22 |
< |
<refname>get_cpu_diff</refname> |
| 20 |
> |
<refname>sg_get_cpu_stats</refname> |
| 21 |
> |
<refname>sg_get_cpu_stats_diff</refname> |
| 22 |
> |
<refname>sg_get_cpu_percents</refname> |
| 23 |
|
<refpurpose>get cpu usage</refpurpose> |
| 24 |
|
</refnamediv> |
| 25 |
< |
|
| 25 |
> |
|
| 26 |
|
<refsynopsisdiv> |
| 27 |
|
<funcsynopsis> |
| 28 |
|
<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo> |
| 29 |
|
<funcprototype> |
| 30 |
< |
<funcdef>cpu_percent_t *<function>cpu_percent_usage</function></funcdef> |
| 30 |
> |
<funcdef>sg_cpu_percents *<function>sg_get_cpu_percents</function></funcdef> |
| 31 |
|
<void/> |
| 32 |
|
</funcprototype> |
| 33 |
|
<funcprototype> |
| 34 |
< |
<funcdef>cpu_states_t *<function>get_cpu_totals</function></funcdef> |
| 34 |
> |
<funcdef>sg_cpu_stats *<function>sg_get_cpu_stats</function></funcdef> |
| 35 |
|
<void/> |
| 36 |
|
</funcprototype> |
| 37 |
|
<funcprototype> |
| 38 |
< |
<funcdef>cpu_states_t *<function>get_cpu_diff</function></funcdef> |
| 38 |
> |
<funcdef>sg_cpu_stats *<function>sg_get_cpu_stats_diff</function></funcdef> |
| 39 |
|
<void/> |
| 40 |
|
</funcprototype> |
| 41 |
|
</funcsynopsis> |
| 42 |
|
</refsynopsisdiv> |
| 43 |
< |
|
| 43 |
> |
|
| 44 |
|
<refsect1> |
| 45 |
|
<title>Description</title> |
| 46 |
|
<para> |
| 47 |
< |
<function>get_cpu_totals()</function> and |
| 48 |
< |
<function>get_cpu_diff()</function> both return static pointers |
| 49 |
< |
of type <structname>cpu_states_t</structname>. |
| 50 |
< |
<function>get_cpu_totals()</function> returns the total amount of |
| 47 |
> |
<function>sg_get_cpu_stats()</function> and |
| 48 |
> |
<function>sg_get_cpu_stats_diff()</function> both return static pointers |
| 49 |
> |
of type <structname>sg_cpu_stats</structname>. |
| 50 |
> |
<function>sg_get_cpu_stats()</function> returns the total amount of |
| 51 |
|
"ticks" the operating system has spent in each of the different |
| 52 |
< |
states. <function>get_cpu_diff()</function> returns the |
| 52 |
> |
states. <function>sg_get_cpu_stats_diff()</function> returns the |
| 53 |
|
difference in "ticks" for each of the states since last time |
| 54 |
< |
<function>get_cpu_diff()</function> or |
| 55 |
< |
<function>get_cpu_totals()</function> was called. If it has never |
| 54 |
> |
<function>sg_get_cpu_stats_diff()</function> or |
| 55 |
> |
<function>sg_get_cpu_stats()</function> was called. If it has never |
| 56 |
|
been called, it will return the result of |
| 57 |
< |
<function>get_cpu_totals()</function>. |
| 57 |
> |
<function>sg_get_cpu_stats()</function>. |
| 58 |
|
</para> |
| 59 |
|
<para> |
| 60 |
|
The value stored (the "ticks") will vary between operating |
| 68 |
|
against the total, or in percentages. |
| 69 |
|
</para> |
| 70 |
|
<para> |
| 71 |
< |
<function>cpu_percent_usage()</function> returns a pointer to a |
| 72 |
< |
static <structname>cpu_percent_t</structname>. The function |
| 73 |
< |
calls <function>get_cpu_diff()</function> and changes the values |
| 71 |
> |
<function>sg_get_cpu_percents()</function> returns a pointer to a |
| 72 |
> |
static <structname>sg_cpu_percents</structname>. The function |
| 73 |
> |
calls <function>sg_get_cpu_stats_diff()</function> and changes the values |
| 74 |
|
into percentages. If it has never been called before (and nor has |
| 75 |
< |
<function>get_cpu_totals()</function> or |
| 76 |
< |
<function>get_cpu_diff()</function>), the returned percentages |
| 75 |
> |
<function>sg_get_cpu_stats()</function> or |
| 76 |
> |
<function>sg_get_cpu_stats_diff()</function>), the returned percentages |
| 77 |
|
will be the systems total ever since its uptime. (Unless the |
| 78 |
|
counters have cycled) |
| 79 |
|
</para> |
| 80 |
|
</refsect1> |
| 81 |
< |
|
| 81 |
> |
|
| 82 |
|
<refsect1> |
| 83 |
|
<title>Return Values</title> |
| 84 |
|
|
| 97 |
|
long long nice; |
| 98 |
|
long long total; |
| 99 |
|
time_t systime; |
| 100 |
< |
}cpu_states_t; |
| 100 |
> |
}sg_cpu_stats; |
| 101 |
|
</programlisting> |
| 102 |
|
|
| 103 |
|
<programlisting> |
| 109 |
|
float swap; |
| 110 |
|
float nice; |
| 111 |
|
time_t time_taken; |
| 112 |
< |
}cpu_percent_t; |
| 112 |
> |
}sg_cpu_percents; |
| 113 |
|
</programlisting> |
| 114 |
|
|
| 115 |
|
<variablelist> |
| 145 |
|
|
| 146 |
|
<refsect1> |
| 147 |
|
<title>See Also</title> |
| 148 |
< |
<para>Nothing yet</para> |
| 148 |
> |
|
| 149 |
> |
<simplelist type="inline"> |
| 150 |
> |
<member> |
| 151 |
> |
<citerefentry> |
| 152 |
> |
<refentrytitle>statgrab</refentrytitle> |
| 153 |
> |
<manvolnum>3</manvolnum> |
| 154 |
> |
</citerefentry> |
| 155 |
> |
</member> |
| 156 |
> |
</simplelist> |
| 157 |
|
</refsect1> |
| 158 |
< |
|
| 158 |
> |
|
| 159 |
|
<refsect1> |
| 160 |
|
<title>Website</title> |
| 161 |
< |
|
| 161 |
> |
|
| 162 |
|
<simplelist type="vert"> |
| 163 |
|
<member> |
| 164 |
< |
<ulink url="http://www.i-scream.org">http://www.i-scream.org</ulink> |
| 164 |
> |
<ulink url="http://www.i-scream.org/libstatgrab/"> |
| 165 |
> |
http://www.i-scream.org/libstatgrab/ |
| 166 |
> |
</ulink> |
| 167 |
|
</member> |
| 168 |
|
</simplelist> |
| 169 |
|
</refsect1> |
