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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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<refentry id="get_memory_stats"> |
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<refentry id="sg_get_mem_stats"> |
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<refentryinfo> |
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<date>$Date$</date> |
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<releaseinfo>$Id$</releaseinfo> |
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</refentryinfo> |
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<refmeta> |
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<refentrytitle>get_memory_stats</refentrytitle> |
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<refentrytitle>sg_get_mem_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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<refmiscinfo>i-scream</refmiscinfo> |
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</refmeta> |
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<refnamediv> |
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<refname>get_memory_stats</refname> |
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<refname>get_swap_stats</refname> |
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<refname>sg_get_mem_stats</refname> |
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<refname>sg_get_swap_stats</refname> |
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<refpurpose>get VM statistics</refpurpose> |
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</refnamediv> |
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<refsynopsisdiv> |
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<funcsynopsis> |
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<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo> |
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<funcprototype> |
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<funcdef>mem_stat_t *<function>get_memory_stats</function></funcdef> |
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<funcdef>sg_mem_stats *<function>sg_get_mem_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>swap_stat_t *<function>get_swap_stats</function></funcdef> |
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<funcdef>sg_swap_stats *<function>sg_get_swap_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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</funcsynopsis> |
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</refsynopsisdiv> |
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<refsect1> |
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<title>Description</title> |
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<para> |
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Memory statistics are accessed through the |
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<function>get_memory_stats</function> function. It returns a |
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pointer to a static <structname>mem_stat_t</structname>. |
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<function>sg_get_mem_stats</function> function. It returns a |
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pointer to a static <structname>sg_mem_stats</structname>. |
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</para> |
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<para> |
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The <function>get_swap_stats</function> returns returns swap |
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The <function>sg_get_swap_stats</function> returns returns swap |
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statistics. It returns a pointer to a static |
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<structname>swap_stat_t</structname>. |
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<structname>sg_swap_stats</structname>. |
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</para> |
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<para> |
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On the FreeBSD operating system elevated privileges are required |
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problem. |
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</para> |
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</refsect1> |
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<refsect1> |
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<title>Return Values</title> |
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<para> |
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The VM system calls can return a pointer to either a |
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<structname>mem_stat_t</structname> or a |
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<structname>swap_stat_t</structname>. |
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<structname>sg_mem_stats</structname> or a |
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<structname>sg_swap_stats</structname>. |
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</para> |
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<programlisting> |
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long long free; |
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long long used; |
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long long cache; |
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}mem_stat_t; |
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}sg_mem_stats; |
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</programlisting> |
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<variablelist> |
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long long total; |
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long long used; |
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long long free; |
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}swap_stat_t; |
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}sg_swap_stats; |
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</programlisting> |
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<variablelist> |
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<varlistentry> |
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<term> |
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<structfield>total</structfield> |
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</term> |
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</term> |
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<listitem> |
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<para> |
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<para> |
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The total swap space in bytes. |
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</para> |
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</listitem> |
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</varlistentry> |
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<varlistentry> |
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<term> |
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<term> |
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<structfield>used</structfield> |
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</term> |
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</term> |
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<listitem> |
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<para> |
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<para> |
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The used swap in bytes. |
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</para> |
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</listitem> |
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</varlistentry> |
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<varlistentry> |
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<term> |
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<term> |
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<structfield>free</structfield> |
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</term> |
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<listitem> |
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<para> |
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</term> |
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<listitem> |
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<para> |
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The free swap in bytes. |
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</para> |
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</listitem> |
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</para> |
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</listitem> |
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</varlistentry> |
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</variablelist> |
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</refsect1> |
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</member> |
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</simplelist> |
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</refsect1> |
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<refsect1> |
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<title>Website</title> |
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<simplelist type="vert"> |
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<member> |
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<ulink url="http://www.i-scream.org/libstatgrab/"> |
