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<?xml version="1.0"?> |
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|
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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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|
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<refentry id="statgrab"> |
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|
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<refentryinfo> |
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<date>$Date: 2004/01/05 17:27:29 $</date> |
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<releaseinfo>$Id: statgrab.xml,v 1.4 2004/01/05 17:27:29 ats Exp $</releaseinfo> |
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</refentryinfo> |
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|
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<refmeta> |
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<refentrytitle>statgrab</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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|
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<refnamediv> |
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<refname>statgrab</refname> |
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<refpurpose>get system statistics</refpurpose> |
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</refnamediv> |
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|
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<refsynopsisdiv> |
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<funcsynopsis> |
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<funcsynopsisinfo>#include <statgrab.h></funcsynopsisinfo> |
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|
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<funcprototype> |
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<funcdef>int <function>statgrab_init</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>int <function>statgrab_drop_privileges</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>cpu_percent_t *<function>cpu_percent_usage</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>cpu_states_t *<function>get_cpu_totals</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>cpu_states_t *<function>get_cpu_diff</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>diskio_stat_t *<function>get_diskio_stats</function></funcdef> |
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<paramdef>int *<parameter>entries</parameter></paramdef> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>diskio_stat_t *<function>get_diskio_stats_diff</function></funcdef> |
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<paramdef>int *<parameter>entries</parameter></paramdef> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>general_stat_t *<function>get_general_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>load_stat_t *<function>get_load_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>mem_stat_t *<function>get_memory_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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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>network_stat_t *<function>get_network_stats</function></funcdef> |
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<paramdef>int *<parameter>entries</parameter></paramdef> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>network_stat_t *<function>get_network_stats_diff</function></funcdef> |
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<paramdef>int *<parameter>entries</parameter></paramdef> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>page_stat_t *<function>get_page_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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<funcprototype> |
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<funcdef>page_stat_t *<function>get_page_stats_diff</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>process_stat_t *<function>get_process_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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<funcprototype> |
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<funcdef>user_stat_t *<function>get_user_stats</function></funcdef> |
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<void/> |
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</funcprototype> |
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|
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</funcsynopsis> |
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</refsynopsisdiv> |
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|
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<refsect1> |
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<title>Description</title> |
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<para> |
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The statgrab library provides a cross-platform interface to getting |
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system statistics. Each of the function calls returns a structure |
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containing statistics. See the manual page for each individual |
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function for more details on usage. |
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</para> |
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<para> |
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<function>statgrab_init</function> must be the first |
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function you call before you start to use libstatgrab; it performs all |
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the one-time initialisation operations that need setuid/setgid |
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privileges. For instance, on *BSD it opens a descriptor to be able to |
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read kernel structures later on, and on Solaris it reads the device |
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mappings that in some cases are only accessible by root (machines with |
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a /dev/osa). Once this has run, the other libstatgrab functions no longer |
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need elevated privileges. It is therefore a good idea to call |
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<function>statgrab_drop_privileges</function>, which discards |
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setuid and setgid privileges, immediately after you call |
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<function>statgrab_init</function>, unless your application has |
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another reason for needing setuid or setgid privileges. |
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</para> |
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<para> |
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<function>statgrab_init</function> and |
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<function>statgrab_drop_privileges</function> return 0 on success, and |
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non-zero on failure. |
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</para> |
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<para> |
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The library was originally written to support the i-scream central |
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monitoring system, but has since become a standalone package. It |
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has been ported to work on Linux, NetBSD, FreeBSD, Solaris and Cygwin. |
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</para> |
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</refsect1> |
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|
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<refsect1> |
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<title>See Also</title> |
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|
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<simplelist type="inline"> |
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<member> |
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<citerefentry> |
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<refentrytitle>cpu_percent_usage</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_diskio_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_general_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_load_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_memory_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_network_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_page_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_process_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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<citerefentry> |
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<refentrytitle>get_user_stats</refentrytitle> |
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<manvolnum>3</manvolnum> |
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</citerefentry> |
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</member> |
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</simplelist> |
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</refsect1> |
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|
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<refsect1> |
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<title>Website</title> |
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|
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<simplelist type="vert"> |
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<member> |
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<ulink url="http://www.i-scream.org">http://www.i-scream.org</ulink> |
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</member> |
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</simplelist> |
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</refsect1> |
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|
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</refentry> |
