0c162f7af0
If a caller chooses to reduce the overhead of repeated function calls, this commit provides for acquiring all the desired information in just a single library call. Signed-off-by: Jim Warner <james.warner@comcast.net>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* libprocps - Library to read proc filesystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PROC_READ_STAT_H
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#define PROC_READ_STAT_H
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#include <proc/procps.h>
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__BEGIN_DECLS
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enum procps_cpu_item {
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PROCPS_CPU_USER,
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PROCPS_CPU_NICE,
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PROCPS_CPU_SYSTEM,
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PROCPS_CPU_IDLE,
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PROCPS_CPU_IOWAIT,
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PROCPS_CPU_IRQ,
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PROCPS_CPU_SIRQ,
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PROCPS_CPU_STOLEN,
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PROCPS_CPU_GUEST,
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PROCPS_CPU_GNICE
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};
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enum procps_stat_item {
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PROCPS_STAT_INTR,
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PROCPS_STAT_CTXT,
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PROCPS_STAT_BTIME,
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PROCPS_STAT_PROCS,
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PROCPS_STAT_PROCS_BLK,
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PROCPS_STAT_PROCS_RUN
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};
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typedef unsigned long long jiff;
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struct procps_cpu_result {
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enum procps_cpu_item item;
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jiff result;
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struct procps_cpu_result *next;
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};
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struct procps_sys_result {
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enum procps_stat_item item;
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int result;
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struct procps_sys_result *next;
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};
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struct procps_statinfo;
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int procps_stat_new (struct procps_statinfo **info);
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int procps_stat_read (struct procps_statinfo *info, const int cpu_only);
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struct procps_statinfo *procps_stat_ref (struct procps_statinfo *info);
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struct procps_statinfo *procps_stat_unref (struct procps_statinfo *info);
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jiff procps_stat_get_cpu (struct procps_statinfo *info, enum procps_cpu_item item);
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int procps_stat_get_cpu_chain (struct procps_statinfo *info, struct procps_cpu_result *item);
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unsigned int procps_stat_get_sys (struct procps_statinfo *info, enum procps_stat_item item);
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int procps_stat_get_sys_chain (struct procps_statinfo *info, struct procps_sys_result *item);
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__END_DECLS
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#endif
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