e41b40e6b0
The following commit message is shared with 4 patches. ------------------------------------------------------ Under the newlib interface most of our 'get' functions represent a bit of a compromise in that the actual raw values are coerced into one (probably ok) return type. That approach creates the possibility of truncation at best, and wouldn't serve future needs should something other than numeric data be added to the 'get' results. This commit trades the current compromise for a return value guaranteed to satisfy all future needs, namely a pointer to a particular api's specific results struct. The impact on existing programs is minimal, especially when using a new supplied macro. Otherwise, native 'C' syntax could be used, but may feel somewhat unnatural. [ as an aside, this new approach allows us to delete ] [ all 'getsfunc' table entries & the supporting code ] Signed-off-by: Jim Warner <james.warner@comcast.net>
134 lines
4.2 KiB
C
134 lines
4.2 KiB
C
/*
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* slabinfo.h - slab related functions for libproc
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*
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* Copyright (C) 1998-2005 Albert Cahalan
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* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
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* Copyright (C) 2016 Jim Warnerl <james.warner@comcast.net>
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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_SLAB_H
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#define _PROC_SLAB_H
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#include <features.h>
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__BEGIN_DECLS
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enum slabinfo_item {
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PROCPS_SLABINFO_noop, // ( never altered )
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PROCPS_SLABINFO_extra, // ( reset to zero )
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PROCPS_SLABS_OBJS, // u_int
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PROCPS_SLABS_AOBJS, // u_int
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PROCPS_SLABS_PAGES, // u_int
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PROCPS_SLABS_SLABS, // u_int
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PROCPS_SLABS_ASLABS, // u_int
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PROCPS_SLABS_CACHES, // u_int
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PROCPS_SLABS_ACACHES, // u_int
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PROCPS_SLABS_SIZE_AVG, // u_int
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PROCPS_SLABS_SIZE_MIN, // u_int
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PROCPS_SLABS_SIZE_MAX, // u_int
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PROCPS_SLABS_SIZE_ACTIVE, // ul_int
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PROCPS_SLABS_SIZE_TOTAL, // ul_int
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PROCPS_SLABS_DELTA_OBJS, // s_int
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PROCPS_SLABS_DELTA_AOBJS, // s_int
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PROCPS_SLABS_DELTA_PAGES, // s_int
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PROCPS_SLABS_DELTA_SLABS, // s_int
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PROCPS_SLABS_DELTA_ASLABS, // s_int
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PROCPS_SLABS_DELTA_CACHES, // s_int
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PROCPS_SLABS_DELTA_ACACHES, // s_int
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PROCPS_SLABS_DELTA_SIZE_AVG, // s_int
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PROCPS_SLABS_DELTA_SIZE_MIN, // s_int
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PROCPS_SLABS_DELTA_SIZE_MAX, // s_int
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PROCPS_SLABS_DELTA_SIZE_ACTIVE, // s_int
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PROCPS_SLABS_DELTA_SIZE_TOTAL, // s_int
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PROCPS_SLABNODE_NAME, // str
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PROCPS_SLABNODE_OBJS, // u_int
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PROCPS_SLABNODE_AOBJS, // u_int
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PROCPS_SLABNODE_OBJ_SIZE, // u_int
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PROCPS_SLABNODE_OBJS_PER_SLAB, // u_int
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PROCPS_SLABNODE_PAGES_PER_SLAB, // u_int
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PROCPS_SLABNODE_SLABS, // u_int
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PROCPS_SLABNODE_ASLABS, // u_int
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PROCPS_SLABNODE_USE, // u_int
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PROCPS_SLABNODE_SIZE // ul_int
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};
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enum slabinfo_sort_order {
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PROCPS_SLABINFO_ASCEND = +1,
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PROCPS_SLABINFO_DESCEND = -1
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};
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struct slabinfo_result {
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enum slabinfo_item item;
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union {
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signed int s_int;
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unsigned int u_int;
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unsigned long ul_int;
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char *str;
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} result;
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};
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struct slabinfo_stack {
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struct slabinfo_result *head;
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};
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struct slabinfo_reap {
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int total;
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struct slabinfo_stack **stacks;
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};
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#define PROCPS_SLABINFO_GET( slabinfo, actual_enum, type ) \
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procps_slabinfo_get( slabinfo, actual_enum ) -> result . type
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#define PROCPS_SLABINFO_VAL( relative_enum, type, stack ) \
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stack -> head [ relative_enum ] . result . type
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struct procps_slabinfo;
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int procps_slabinfo_new (struct procps_slabinfo **info);
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int procps_slabinfo_ref (struct procps_slabinfo *info);
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int procps_slabinfo_unref (struct procps_slabinfo **info);
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struct slabinfo_result *procps_slabinfo_get (
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struct procps_slabinfo *info,
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enum slabinfo_item item);
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struct slabinfo_reap *procps_slabinfo_reap (
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struct procps_slabinfo *info,
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enum slabinfo_item *items,
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int numitems);
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struct slabinfo_stack *procps_slabinfo_select (
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struct procps_slabinfo *info,
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enum slabinfo_item *items,
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int numitems);
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struct slabinfo_stack **procps_slabinfo_sort (
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struct procps_slabinfo *info,
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struct slabinfo_stack *stacks[],
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int numstacked,
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enum slabinfo_item sortitem,
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enum slabinfo_sort_order order);
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__END_DECLS
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#endif /* _PROC_SLAB_H */
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