procps/proc/slabinfo.h
Jim Warner 6cafe3abec library: expand VAL macros to include the context parm
This patch will set the stage for validating the types
referenced in the result union. For now, the parameter
representing that 'info' structure will remain unused.

[ and while we're at it, let us correct a faulty GET ]
[ macro in the diskstats header. that puppy missed a ]
[ parm which ain't so good if that guy is ever used! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-08-07 21:40:48 +10:00

134 lines
3.9 KiB
C

/*
* libprocps - Library to read proc filesystem
*
* Copyright (C) 1998-2005 Albert Cahalan
* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
* Copyright (C) 2016 Jim Warnerl <james.warner@comcast.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PROC_SLAB_H
#define PROC_SLAB_H
#include <sys/cdefs.h>
__BEGIN_DECLS
enum slabinfo_item {
SLABINFO_noop, // ( never altered )
SLABINFO_extra, // ( reset to zero )
SLABS_OBJS, // u_int
SLABS_AOBJS, // u_int
SLABS_PAGES, // u_int
SLABS_SLABS, // u_int
SLABS_ASLABS, // u_int
SLABS_CACHES, // u_int
SLABS_ACACHES, // u_int
SLABS_SIZE_AVG, // u_int
SLABS_SIZE_MIN, // u_int
SLABS_SIZE_MAX, // u_int
SLABS_SIZE_ACTIVE, // ul_int
SLABS_SIZE_TOTAL, // ul_int
SLABS_DELTA_OBJS, // s_int
SLABS_DELTA_AOBJS, // s_int
SLABS_DELTA_PAGES, // s_int
SLABS_DELTA_SLABS, // s_int
SLABS_DELTA_ASLABS, // s_int
SLABS_DELTA_CACHES, // s_int
SLABS_DELTA_ACACHES, // s_int
SLABS_DELTA_SIZE_AVG, // s_int
SLABS_DELTA_SIZE_MIN, // s_int
SLABS_DELTA_SIZE_MAX, // s_int
SLABS_DELTA_SIZE_ACTIVE, // s_int
SLABS_DELTA_SIZE_TOTAL, // s_int
SLABNODE_NAME, // str
SLABNODE_OBJS, // u_int
SLABNODE_AOBJS, // u_int
SLABNODE_OBJ_SIZE, // u_int
SLABNODE_OBJS_PER_SLAB, // u_int
SLABNODE_PAGES_PER_SLAB, // u_int
SLABNODE_SLABS, // u_int
SLABNODE_ASLABS, // u_int
SLABNODE_USE, // u_int
SLABNODE_SIZE // ul_int
};
enum slabinfo_sort_order {
SLABINFO_SORT_ASCEND = +1,
SLABINFO_SORT_DESCEND = -1
};
struct slabinfo_result {
enum slabinfo_item item;
union {
signed int s_int;
unsigned int u_int;
unsigned long ul_int;
char *str;
} result;
};
struct slabinfo_stack {
struct slabinfo_result *head;
};
struct slabinfo_reap {
int total;
struct slabinfo_stack **stacks;
};
#define SLABINFO_GET( info, actual_enum, type ) \
procps_slabinfo_get( info, actual_enum ) -> result . type
#define SLABINFO_VAL( relative_enum, type, stack, info ) \
stack -> head [ relative_enum ] . result . type
struct slabinfo_info;
int procps_slabinfo_new (struct slabinfo_info **info);
int procps_slabinfo_ref (struct slabinfo_info *info);
int procps_slabinfo_unref (struct slabinfo_info **info);
struct slabinfo_result *procps_slabinfo_get (
struct slabinfo_info *info,
enum slabinfo_item item);
struct slabinfo_reap *procps_slabinfo_reap (
struct slabinfo_info *info,
enum slabinfo_item *items,
int numitems);
struct slabinfo_stack *procps_slabinfo_select (
struct slabinfo_info *info,
enum slabinfo_item *items,
int numitems);
struct slabinfo_stack **procps_slabinfo_sort (
struct slabinfo_info *info,
struct slabinfo_stack *stacks[],
int numstacked,
enum slabinfo_item sortitem,
enum slabinfo_sort_order order);
__END_DECLS
#endif /* _PROC_SLAB_H */