6f71a33c1d
With this patch, all of the modules which offer a reap function (pids, diskstats, slabinfo and stat too) will now also provide for sorting whatever had been reaped. It was easy to overlook a sort function for our <STAT> guy given the paucity of CPUs on your typical personal desktop or laptop. However, out in the world one might find boxes with hundreds of CPUs plus many NUMA nodes. Hey, who are we to disallow sorts on something another person might see as useful under the above conditions? And, there's always something to be said for symmetry. [ of course, several minor tweaks were also included ] Signed-off-by: Jim Warner <james.warner@comcast.net>
146 lines
4.0 KiB
C
146 lines
4.0 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_STAT_H
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#define PROC_STAT_H
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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enum stat_item {
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STAT_noop, // ( never altered )
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STAT_extra, // ( reset to zero )
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STAT_TIC_ID, // s_int
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STAT_TIC_NUMA_NODE, // s_int
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STAT_TIC_USER, // ull_int
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STAT_TIC_NICE, // ull_int
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STAT_TIC_SYSTEM, // ull_int
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STAT_TIC_IDLE, // ull_int
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STAT_TIC_IOWAIT, // ull_int
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STAT_TIC_IRQ, // ull_int
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STAT_TIC_SOFTIRQ, // ull_int
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STAT_TIC_STOLEN, // ull_int
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STAT_TIC_GUEST, // ull_int
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STAT_TIC_GUEST_NICE, // ull_int
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STAT_TIC_DELTA_USER, // sl_int
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STAT_TIC_DELTA_NICE, // sl_int
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STAT_TIC_DELTA_SYSTEM, // sl_int
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STAT_TIC_DELTA_IDLE, // sl_int
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STAT_TIC_DELTA_IOWAIT, // sl_int
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STAT_TIC_DELTA_IRQ, // sl_int
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STAT_TIC_DELTA_SOFTIRQ, // sl_int
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STAT_TIC_DELTA_STOLEN, // sl_int
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STAT_TIC_DELTA_GUEST, // sl_int
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STAT_TIC_DELTA_GUEST_NICE, // sl_int
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STAT_SYS_CTX_SWITCHES, // ul_int
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STAT_SYS_INTERRUPTS, // ul_int
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STAT_SYS_PROC_BLOCKED, // ul_int
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STAT_SYS_PROC_CREATED, // ul_int
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STAT_SYS_PROC_RUNNING, // ul_int
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STAT_SYS_TIME_OF_BOOT, // ul_int
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STAT_SYS_DELTA_CTX_SWITCHES, // s_int
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STAT_SYS_DELTA_INTERRUPTS, // s_int
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STAT_SYS_DELTA_PROC_BLOCKED, // s_int
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STAT_SYS_DELTA_PROC_CREATED, // s_int
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STAT_SYS_DELTA_PROC_RUNNING // s_int
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};
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enum stat_reap_type {
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STAT_REAP_CPUS_ONLY,
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STAT_REAP_CPUS_AND_NODES
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};
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enum stat_sort_order {
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STAT_SORT_ASCEND = +1,
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STAT_SORT_DESCEND = -1
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};
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struct stat_result {
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enum stat_item item;
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union {
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signed int s_int;
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signed long sl_int;
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unsigned long ul_int;
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unsigned long long ull_int;
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} result;
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};
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struct stat_stack {
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struct stat_result *head;
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};
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struct stat_reap {
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int total;
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struct stat_stack **stacks;
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};
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struct stat_reaped {
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struct stat_stack *summary;
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struct stat_reap *cpus;
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struct stat_reap *nodes;
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};
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#define STAT_SUMMARY_ID -11111
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#define STAT_NODE_INVALID -22222
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#define STAT_GET( info, actual_enum, type ) \
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procps_stat_get( info, actual_enum ) -> result . type
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#define STAT_VAL( relative_enum, type, stack ) \
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stack -> head [ relative_enum ] . result . type
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struct stat_info;
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int procps_stat_new (struct stat_info **info);
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int procps_stat_ref (struct stat_info *info);
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int procps_stat_unref (struct stat_info **info);
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struct stat_result *procps_stat_get (
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struct stat_info *info,
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enum stat_item item);
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struct stat_reaped *procps_stat_reap (
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struct stat_info *info,
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enum stat_reap_type what,
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enum stat_item *items,
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int numitems);
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struct stat_stack *procps_stat_select (
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struct stat_info *info,
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enum stat_item *items,
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int numitems);
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struct stat_stack **procps_stat_sort (
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struct stat_info *info,
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struct stat_stack *stacks[],
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int numstacked,
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enum stat_item sortitem,
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enum stat_sort_order order);
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__END_DECLS
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#endif
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