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-rw-r--r--library/include/slabinfo.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/library/include/slabinfo.h b/library/include/slabinfo.h
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+/*
+ * slabinfo.h - slab pools related declarations for libprocps
+ *
+ * Copyright (C) 1998-2005 Albert Cahalan
+ * Copyright (C) 2015 Craig Small <csmall@dropbear.xyz>
+ * Copyright (C) 2016-2022 Jim Warner <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 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 * NUM_OBJS * 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