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Diffstat (limited to 'library/include/slabinfo.h')
| -rw-r--r-- | library/include/slabinfo.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/library/include/slabinfo.h b/library/include/slabinfo.h new file mode 100644 index 0000000..f63ca79 --- /dev/null +++ b/library/include/slabinfo.h @@ -0,0 +1,140 @@ +/* + * slabinfo.h - slab pools related declarations for libproc2 + * + * Copyright © 2015-2023 Jim Warner <james.warner@comcast.net> + * Copyright © 2015-2023 Craig Small <csmall@dropbear.xyz> + * + * 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 PROCPS_SLABINFO_H +#define PROCPS_SLABINFO_H + +#ifdef __cplusplus +extern "C "{ +#endif + +enum slabinfo_item { + SLABINFO_noop, // ( never altered ) + SLABINFO_extra, // ( reset to zero ) + // returns origin, see proc(5) + // ------- ------------------- + SLAB_NAME, // str /proc/slabinfo + SLAB_NUM_OBJS, // u_int " + SLAB_ACTIVE_OBJS, // u_int " + SLAB_OBJ_SIZE, // u_int " + SLAB_OBJ_PER_SLAB, // u_int " + SLAB_NUMS_SLABS, // u_int " + SLAB_ACTIVE_SLABS, // u_int " + SLAB_PAGES_PER_SLAB, // u_int " + SLAB_PERCENT_USED, // u_int derived from ACTIVE_OBJS / NUM_OBJS + SLAB_SIZE_TOTAL, // ul_int derived from page size * NUMS_SLABS * PAGES_PER_SLAB + + SLABS_CACHES_TOTAL, // u_int derived from all caches + SLABS_CACHES_ACTIVE, // u_int " + SLABS_NUM_OBJS, // u_int " + SLABS_ACTIVE_OBJS, // u_int " + SLABS_OBJ_SIZE_AVG, // u_int " + SLABS_OBJ_SIZE_MIN, // u_int " + SLABS_OBJ_SIZE_MAX, // u_int " + SLABS_NUMS_SLABS, // u_int " + SLABS_ACTIVE_SLABS, // u_int " + SLABS_PAGES_TOTAL, // u_int " + SLABS_SIZE_ACTIVE, // ul_int " + SLABS_SIZE_TOTAL, // ul_int " + + SLABS_DELTA_CACHES_TOTAL, // s_int derived from above + SLABS_DELTA_CACHES_ACTIVE, // s_int " + SLABS_DELTA_NUM_OBJS, // s_int " + SLABS_DELTA_ACTIVE_OBJS, // s_int " + SLABS_DELTA_OBJ_SIZE_AVG, // s_int " + SLABS_DELTA_OBJ_SIZE_MIN, // s_int " + SLABS_DELTA_OBJ_SIZE_MAX, // s_int " + SLABS_DELTA_NUMS_SLABS, // s_int " + SLABS_DELTA_ACTIVE_SLABS, // s_int " + SLABS_DELTA_PAGES_TOTAL, // s_int " + SLABS_DELTA_SIZE_ACTIVE, // s_int " + SLABS_DELTA_SIZE_TOTAL // s_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_reaped { + int total; + struct slabinfo_stack **stacks; +}; + +struct slabinfo_info; + + +#define SLABINFO_GET( info, actual_enum, type ) ( { \ + struct slabinfo_result *r = procps_slabinfo_get( info, actual_enum ); \ + r ? r->result . type : 0; } ) + +#define SLABINFO_VAL( relative_enum, type, stack, info ) \ + stack -> head [ relative_enum ] . result . type + + +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_reaped *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); + + +#ifdef XTRA_PROCPS_DEBUG +# include "xtra-procps-debug.h" +#endif +#ifdef __cplusplus +} +#endif +#endif |