118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef __GLIBTOP_PROCTIME_H__
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#define __GLIBTOP_PROCTIME_H__
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#include <glibtop.h>
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#include <glibtop/cpu.h>
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#include <glibtop/global.h>
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G_BEGIN_DECLS
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#define GLIBTOP_PROC_TIME_START_TIME 0
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#define GLIBTOP_PROC_TIME_RTIME 1
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#define GLIBTOP_PROC_TIME_UTIME 2
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#define GLIBTOP_PROC_TIME_STIME 3
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#define GLIBTOP_PROC_TIME_CUTIME 4
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#define GLIBTOP_PROC_TIME_CSTIME 5
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#define GLIBTOP_PROC_TIME_TIMEOUT 6
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#define GLIBTOP_PROC_TIME_IT_REAL_VALUE 7
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#define GLIBTOP_PROC_TIME_FREQUENCY 8
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#define GLIBTOP_PROC_TIME_XCPU_UTIME 9
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#define GLIBTOP_PROC_TIME_XCPU_STIME 10
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#define GLIBTOP_MAX_PROC_TIME 11
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typedef struct _glibtop_proc_time glibtop_proc_time;
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/* Time section */
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/**
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* glibtop_proc_time:
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* @start_time: Start time of process in seconds since the epoch.
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* @rtime: Real time accumulated by process (should be @utime + @stime).
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* @utime: User-mode CPU time accumulated by process.
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* @stime: Kernel-mode CPU time accumulated by process.
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* @cutime: Cumulative utime of process and reaped children.
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* @cstime: Cumulative stime of process and reaped children.
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* @timeout: The time (in jiffies) of the process’s next timeout.
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* @it_real_value: The time (in jiffies) before the next <type>SIGALRM</type>
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* is sent to the process due to an interval timer.
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* @frequency: Tick frequency.
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* @xcpu_utime: SMP user-mode CPU time accumulated by process.
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* @xcpu_stime: SMP kernel-mode CPU time accumulated by process
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*
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* Process time data filled by glibtop_get_proc_time().
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*
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* Under Linux the @start_time value may be wrong due to the information
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* available from the kernel.
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*
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* The Linux kernel defines <type>INITIAL_JIFFIES</type> which implies a time
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* shift. Because <type>INITIAL_JIFFIES</type> is not user-space defined,
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* we cannot use it to compute an accurate @start_time. On Linux 2.6,
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* <type>INITIAL_JIFFIES</type> is 300 so @start_time is
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* always 3s different from the real start time of the given process. You
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* may also get shift results if your system clock is not synchronised
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* with your hardware clock. See <command>man hwclock</command>.
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*/
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struct _glibtop_proc_time
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{
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/*< private >*/
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guint64 flags;
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/*< public >*/
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guint64 start_time;
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guint64 rtime;
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guint64 utime;
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guint64 stime;
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guint64 cutime;
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guint64 cstime;
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guint64 timeout;
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guint64 it_real_value;
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guint64 frequency;
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guint64 xcpu_utime [GLIBTOP_NCPU];
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guint64 xcpu_stime [GLIBTOP_NCPU];
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};
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void glibtop_get_proc_time(glibtop_proc_time *buf, pid_t pid);
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#if GLIBTOP_SUID_PROC_TIME
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#define glibtop_get_proc_time_r glibtop_get_proc_time_p
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#else
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#define glibtop_get_proc_time_r glibtop_get_proc_time_s
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#endif
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void glibtop_get_proc_time_l (glibtop *server, glibtop_proc_time *buf, pid_t pid);
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#if GLIBTOP_SUID_PROC_TIME
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void _glibtop_init_proc_time_p (glibtop *server);
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void glibtop_get_proc_time_p (glibtop *server, glibtop_proc_time *buf, pid_t pid);
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#else
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void _glibtop_init_proc_time_s (glibtop *server);
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void glibtop_get_proc_time_s (glibtop *server, glibtop_proc_time *buf, pid_t pid);
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#endif
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G_END_DECLS
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#endif
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