d69a2b6899
This interface represented a 2nd generation attempt at the opaque newlib approach. In other words, it did not involve the 1st generation 'chains'. Instead, 'stacks' were employed. But the interface wasn't user friendly. Users were required to create their own stacks, before calling 'getstack' to retrieve multiple results with a single call. Even worse, sometimes 'read' was required before calling 'get' when working with single results. So this commit represents the 3rd generation approach. We eliminate the burden of 'read' and creating stacks. Rather, beyond those standard 'new', 'ref' and 'unref' functions, we'll offer just 'get' (single result) plus a 'select' function (for multiple results in 1 stack). And along the way, this commit vastly expands the data extracted from /proc/vmstat. All values that currently exist (and their delta equivalents) are now available. Deltas were included for everything because there's no real runtime costs beyond using a little extra memory. The only problem is a lack of documentation for all of those fields, as is reflected in the references below. Oh well, maybe someday someone will dig through kernel sources & finally plug that rather large document gap. [ as an aside, rather than using a 'strcmp' approach ] [ when parsing the /proc/vmstat file, as is found in ] [ the <meminfo> module, we exploit those hash search ] [ provisions that are found in the <search.h> header ] Reference(s): http://www.spinics.net/lists/linux-man/msg09096.html http://www.linuxinsight.com/proc_vmstat.html Signed-off-by: Jim Warner <james.warner@comcast.net>
309 lines
17 KiB
C
309 lines
17 KiB
C
/*
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* libprocps - Library to read proc filesystem
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*
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* Copyright (C) 1995 Martin Schulze <joey@infodrom.north.de>
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* Copyright (C) 1996 Charles Blake <cblake@bbn.com>
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* Copyright (C) 2003 Albert Cahalan
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* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
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* Copyright (C) 2016 Jim Warner <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_VMSTAT_H
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#define PROC_VMSTAT_H
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#include <features.h>
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__BEGIN_DECLS
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enum vmstat_item {
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PROCPS_VMSTAT_noop, // n/a
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PROCPS_VMSTAT_extra, // n/a
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PROCPS_VMSTAT_ALLOCSTALL, // ul_int
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PROCPS_VMSTAT_BALLOON_DEFLATE, // ul_int
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PROCPS_VMSTAT_BALLOON_INFLATE, // ul_int
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PROCPS_VMSTAT_BALLOON_MIGRATE, // ul_int
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PROCPS_VMSTAT_COMPACT_FAIL, // ul_int
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PROCPS_VMSTAT_COMPACT_FREE_SCANNED, // ul_int
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PROCPS_VMSTAT_COMPACT_ISOLATED, // ul_int
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PROCPS_VMSTAT_COMPACT_MIGRATE_SCANNED, // ul_int
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PROCPS_VMSTAT_COMPACT_STALL, // ul_int
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PROCPS_VMSTAT_COMPACT_SUCCESS, // ul_int
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PROCPS_VMSTAT_DROP_PAGECACHE, // ul_int
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PROCPS_VMSTAT_DROP_SLAB, // ul_int
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PROCPS_VMSTAT_HTLB_BUDDY_ALLOC_FAIL, // ul_int
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PROCPS_VMSTAT_HTLB_BUDDY_ALLOC_SUCCESS, // ul_int
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PROCPS_VMSTAT_KSWAPD_HIGH_WMARK_HIT_QUICKLY, // ul_int
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PROCPS_VMSTAT_KSWAPD_INODESTEAL, // ul_int
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PROCPS_VMSTAT_KSWAPD_LOW_WMARK_HIT_QUICKLY, // ul_int
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PROCPS_VMSTAT_NR_ACTIVE_ANON, // ul_int
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PROCPS_VMSTAT_NR_ACTIVE_FILE, // ul_int
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PROCPS_VMSTAT_NR_ALLOC_BATCH, // ul_int
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PROCPS_VMSTAT_NR_ANON_PAGES, // ul_int
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PROCPS_VMSTAT_NR_ANON_TRANSPARENT_HUGEPAGES, // ul_int
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PROCPS_VMSTAT_NR_BOUNCE, // ul_int
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PROCPS_VMSTAT_NR_DIRTIED, // ul_int
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PROCPS_VMSTAT_NR_DIRTY, // ul_int
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PROCPS_VMSTAT_NR_DIRTY_BACKGROUND_THRESHOLD, // ul_int
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PROCPS_VMSTAT_NR_DIRTY_THRESHOLD, // ul_int
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PROCPS_VMSTAT_NR_FILE_PAGES, // ul_int
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PROCPS_VMSTAT_NR_FREE_CMA, // ul_int
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PROCPS_VMSTAT_NR_FREE_PAGES, // ul_int
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PROCPS_VMSTAT_NR_INACTIVE_ANON, // ul_int
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PROCPS_VMSTAT_NR_INACTIVE_FILE, // ul_int
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PROCPS_VMSTAT_NR_ISOLATED_ANON, // ul_int
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PROCPS_VMSTAT_NR_ISOLATED_FILE, // ul_int
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PROCPS_VMSTAT_NR_KERNEL_STACK, // ul_int
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PROCPS_VMSTAT_NR_MAPPED, // ul_int
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PROCPS_VMSTAT_NR_MLOCK, // ul_int
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PROCPS_VMSTAT_NR_PAGES_SCANNED, // ul_int
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PROCPS_VMSTAT_NR_PAGE_TABLE_PAGES, // ul_int
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PROCPS_VMSTAT_NR_SHMEM, // ul_int
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PROCPS_VMSTAT_NR_SLAB_RECLAIMABLE, // ul_int
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PROCPS_VMSTAT_NR_SLAB_UNRECLAIMABLE, // ul_int
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PROCPS_VMSTAT_NR_UNEVICTABLE, // ul_int
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PROCPS_VMSTAT_NR_UNSTABLE, // ul_int
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PROCPS_VMSTAT_NR_VMSCAN_IMMEDIATE_RECLAIM, // ul_int
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PROCPS_VMSTAT_NR_VMSCAN_WRITE, // ul_int
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PROCPS_VMSTAT_NR_WRITEBACK, // ul_int
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PROCPS_VMSTAT_NR_WRITEBACK_TEMP, // ul_int
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PROCPS_VMSTAT_NR_WRITTEN, // ul_int
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PROCPS_VMSTAT_NUMA_FOREIGN, // ul_int
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PROCPS_VMSTAT_NUMA_HINT_FAULTS, // ul_int
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PROCPS_VMSTAT_NUMA_HINT_FAULTS_LOCAL, // ul_int
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PROCPS_VMSTAT_NUMA_HIT, // ul_int
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PROCPS_VMSTAT_NUMA_HUGE_PTE_UPDATES, // ul_int
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PROCPS_VMSTAT_NUMA_INTERLEAVE, // ul_int
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PROCPS_VMSTAT_NUMA_LOCAL, // ul_int
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PROCPS_VMSTAT_NUMA_MISS, // ul_int
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PROCPS_VMSTAT_NUMA_OTHER, // ul_int
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PROCPS_VMSTAT_NUMA_PAGES_MIGRATED, // ul_int
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PROCPS_VMSTAT_NUMA_PTE_UPDATES, // ul_int
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PROCPS_VMSTAT_PAGEOUTRUN, // ul_int
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PROCPS_VMSTAT_PGACTIVATE, // ul_int
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PROCPS_VMSTAT_PGALLOC_DMA, // ul_int
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PROCPS_VMSTAT_PGALLOC_DMA32, // ul_int
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PROCPS_VMSTAT_PGALLOC_MOVABLE, // ul_int
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PROCPS_VMSTAT_PGALLOC_NORMAL, // ul_int
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PROCPS_VMSTAT_PGDEACTIVATE, // ul_int
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PROCPS_VMSTAT_PGFAULT, // ul_int
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PROCPS_VMSTAT_PGFREE, // ul_int
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PROCPS_VMSTAT_PGINODESTEAL, // ul_int
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PROCPS_VMSTAT_PGMAJFAULT, // ul_int
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PROCPS_VMSTAT_PGMIGRATE_FAIL, // ul_int
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PROCPS_VMSTAT_PGMIGRATE_SUCCESS, // ul_int
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PROCPS_VMSTAT_PGPGIN, // ul_int
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PROCPS_VMSTAT_PGPGOUT, // ul_int
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PROCPS_VMSTAT_PGREFILL_DMA, // ul_int
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PROCPS_VMSTAT_PGREFILL_DMA32, // ul_int
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PROCPS_VMSTAT_PGREFILL_MOVABLE, // ul_int
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PROCPS_VMSTAT_PGREFILL_NORMAL, // ul_int
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PROCPS_VMSTAT_PGROTATED, // ul_int
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PROCPS_VMSTAT_PGSCAN_DIRECT_DMA, // ul_int
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PROCPS_VMSTAT_PGSCAN_DIRECT_DMA32, // ul_int
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PROCPS_VMSTAT_PGSCAN_DIRECT_MOVABLE, // ul_int
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PROCPS_VMSTAT_PGSCAN_DIRECT_NORMAL, // ul_int
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PROCPS_VMSTAT_PGSCAN_DIRECT_THROTTLE, // ul_int
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PROCPS_VMSTAT_PGSCAN_KSWAPD_DMA, // ul_int
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PROCPS_VMSTAT_PGSCAN_KSWAPD_DMA32, // ul_int
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PROCPS_VMSTAT_PGSCAN_KSWAPD_MOVEABLE, // ul_int
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PROCPS_VMSTAT_PGSCAN_KSWAPD_NORMAL, // ul_int
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PROCPS_VMSTAT_PGSTEAL_DIRECT_DMA, // ul_int
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PROCPS_VMSTAT_PGSTEAL_DIRECT_DMA32, // ul_int
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PROCPS_VMSTAT_PGSTEAL_DIRECT_MOVABLE, // ul_int
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PROCPS_VMSTAT_PGSTEAL_DIRECT_NORMAL, // ul_int
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PROCPS_VMSTAT_PGSTEAL_KSWAPD_DMA, // ul_int
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PROCPS_VMSTAT_PGSTEAL_KSWAPD_DMA32, // ul_int
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PROCPS_VMSTAT_PGSTEAL_KSWAPD_MOVABLE, // ul_int
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PROCPS_VMSTAT_PGSTEAL_KSWAPD_NORMAL, // ul_int
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PROCPS_VMSTAT_PSWPIN, // ul_int
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PROCPS_VMSTAT_PSWPOUT, // ul_int
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PROCPS_VMSTAT_SLABS_SCANNED, // ul_int
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PROCPS_VMSTAT_THP_COLLAPSE_ALLOC, // ul_int
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PROCPS_VMSTAT_THP_COLLAPSE_ALLOC_FAILED, // ul_int
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PROCPS_VMSTAT_THP_FAULT_ALLOC, // ul_int
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PROCPS_VMSTAT_THP_FAULT_FALLBACK, // ul_int
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PROCPS_VMSTAT_THP_SPLIT, // ul_int
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PROCPS_VMSTAT_THP_ZERO_PAGE_ALLOC, // ul_int
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PROCPS_VMSTAT_THP_ZERO_PAGE_ALLOC_FAILED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_CLEARED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_CULLED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_MLOCKED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_MUNLOCKED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_RESCUED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_SCANNED, // ul_int
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PROCPS_VMSTAT_UNEVICTABLE_PGS_STRANDED, // ul_int
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PROCPS_VMSTAT_WORKINGSET_ACTIVATE, // ul_int
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PROCPS_VMSTAT_WORKINGSET_NODERECLAIM, // ul_int
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PROCPS_VMSTAT_WORKINGSET_REFAULT, // ul_int
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PROCPS_VMSTAT_ZONE_RECLAIM_FAILED, // ul_int
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PROCPS_VMSTAT_DELTA_ALLOCSTALL, // sl_int
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PROCPS_VMSTAT_DELTA_BALLOON_DEFLATE, // sl_int
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PROCPS_VMSTAT_DELTA_BALLOON_INFLATE, // sl_int
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PROCPS_VMSTAT_DELTA_BALLOON_MIGRATE, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_FAIL, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_FREE_SCANNED, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_ISOLATED, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_MIGRATE_SCANNED, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_STALL, // sl_int
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PROCPS_VMSTAT_DELTA_COMPACT_SUCCESS, // sl_int
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PROCPS_VMSTAT_DELTA_DROP_PAGECACHE, // sl_int
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PROCPS_VMSTAT_DELTA_DROP_SLAB, // sl_int
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PROCPS_VMSTAT_DELTA_HTLB_BUDDY_ALLOC_FAIL, // sl_int
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PROCPS_VMSTAT_DELTA_HTLB_BUDDY_ALLOC_SUCCESS, // sl_int
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PROCPS_VMSTAT_DELTA_KSWAPD_HIGH_WMARK_HIT_QUICKLY, // sl_int
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PROCPS_VMSTAT_DELTA_KSWAPD_INODESTEAL, // sl_int
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PROCPS_VMSTAT_DELTA_KSWAPD_LOW_WMARK_HIT_QUICKLY, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ACTIVE_ANON, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ACTIVE_FILE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ALLOC_BATCH, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ANON_PAGES, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ANON_TRANSPARENT_HUGEPAGES, // sl_int
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PROCPS_VMSTAT_DELTA_NR_BOUNCE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_DIRTIED, // sl_int
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PROCPS_VMSTAT_DELTA_NR_DIRTY, // sl_int
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PROCPS_VMSTAT_DELTA_NR_DIRTY_BACKGROUND_THRESHOLD, // sl_int
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PROCPS_VMSTAT_DELTA_NR_DIRTY_THRESHOLD, // sl_int
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PROCPS_VMSTAT_DELTA_NR_FILE_PAGES, // sl_int
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PROCPS_VMSTAT_DELTA_NR_FREE_CMA, // sl_int
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PROCPS_VMSTAT_DELTA_NR_FREE_PAGES, // sl_int
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PROCPS_VMSTAT_DELTA_NR_INACTIVE_ANON, // sl_int
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PROCPS_VMSTAT_DELTA_NR_INACTIVE_FILE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ISOLATED_ANON, // sl_int
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PROCPS_VMSTAT_DELTA_NR_ISOLATED_FILE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_KERNEL_STACK, // sl_int
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PROCPS_VMSTAT_DELTA_NR_MAPPED, // sl_int
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PROCPS_VMSTAT_DELTA_NR_MLOCK, // sl_int
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PROCPS_VMSTAT_DELTA_NR_PAGES_SCANNED, // sl_int
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PROCPS_VMSTAT_DELTA_NR_PAGE_TABLE_PAGES, // sl_int
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PROCPS_VMSTAT_DELTA_NR_SHMEM, // sl_int
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PROCPS_VMSTAT_DELTA_NR_SLAB_RECLAIMABLE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_SLAB_UNRECLAIMABLE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_UNEVICTABLE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_UNSTABLE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_VMSCAN_IMMEDIATE_RECLAIM, // sl_int
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PROCPS_VMSTAT_DELTA_NR_VMSCAN_WRITE, // sl_int
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PROCPS_VMSTAT_DELTA_NR_WRITEBACK, // sl_int
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PROCPS_VMSTAT_DELTA_NR_WRITEBACK_TEMP, // sl_int
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PROCPS_VMSTAT_DELTA_NR_WRITTEN, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_FOREIGN, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_HINT_FAULTS, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_HINT_FAULTS_LOCAL, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_HIT, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_HUGE_PTE_UPDATES, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_INTERLEAVE, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_LOCAL, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_MISS, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_OTHER, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_PAGES_MIGRATED, // sl_int
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PROCPS_VMSTAT_DELTA_NUMA_PTE_UPDATES, // sl_int
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PROCPS_VMSTAT_DELTA_PAGEOUTRUN, // sl_int
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PROCPS_VMSTAT_DELTA_PGACTIVATE, // sl_int
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PROCPS_VMSTAT_DELTA_PGALLOC_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGALLOC_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGALLOC_MOVABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGALLOC_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGDEACTIVATE, // sl_int
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PROCPS_VMSTAT_DELTA_PGFAULT, // sl_int
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PROCPS_VMSTAT_DELTA_PGFREE, // sl_int
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PROCPS_VMSTAT_DELTA_PGINODESTEAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGMAJFAULT, // sl_int
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PROCPS_VMSTAT_DELTA_PGMIGRATE_FAIL, // sl_int
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PROCPS_VMSTAT_DELTA_PGMIGRATE_SUCCESS, // sl_int
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PROCPS_VMSTAT_DELTA_PGPGIN, // sl_int
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PROCPS_VMSTAT_DELTA_PGPGOUT, // sl_int
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PROCPS_VMSTAT_DELTA_PGREFILL_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGREFILL_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGREFILL_MOVABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGREFILL_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGROTATED, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_DIRECT_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_DIRECT_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_DIRECT_MOVABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_DIRECT_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_DIRECT_THROTTLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_KSWAPD_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_KSWAPD_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_KSWAPD_MOVEABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGSCAN_KSWAPD_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_DIRECT_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_DIRECT_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_DIRECT_MOVABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_DIRECT_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_KSWAPD_DMA, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_KSWAPD_DMA32, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_KSWAPD_MOVABLE, // sl_int
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PROCPS_VMSTAT_DELTA_PGSTEAL_KSWAPD_NORMAL, // sl_int
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PROCPS_VMSTAT_DELTA_PSWPIN, // sl_int
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PROCPS_VMSTAT_DELTA_PSWPOUT, // sl_int
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PROCPS_VMSTAT_DELTA_SLABS_SCANNED, // sl_int
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PROCPS_VMSTAT_DELTA_THP_COLLAPSE_ALLOC, // sl_int
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PROCPS_VMSTAT_DELTA_THP_COLLAPSE_ALLOC_FAILED, // sl_int
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PROCPS_VMSTAT_DELTA_THP_FAULT_ALLOC, // sl_int
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PROCPS_VMSTAT_DELTA_THP_FAULT_FALLBACK, // sl_int
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PROCPS_VMSTAT_DELTA_THP_SPLIT, // sl_int
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PROCPS_VMSTAT_DELTA_THP_ZERO_PAGE_ALLOC, // sl_int
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PROCPS_VMSTAT_DELTA_THP_ZERO_PAGE_ALLOC_FAILED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_CLEARED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_CULLED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_MLOCKED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_MUNLOCKED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_RESCUED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_SCANNED, // sl_int
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PROCPS_VMSTAT_DELTA_UNEVICTABLE_PGS_STRANDED, // sl_int
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PROCPS_VMSTAT_DELTA_WORKINGSET_ACTIVATE, // sl_int
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PROCPS_VMSTAT_DELTA_WORKINGSET_NODERECLAIM, // sl_int
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PROCPS_VMSTAT_DELTA_WORKINGSET_REFAULT, // sl_int
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PROCPS_VMSTAT_DELTA_ZONE_RECLAIM_FAILED // sl_int
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};
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struct vmstat_result {
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enum vmstat_item item;
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union {
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signed long sl_int;
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unsigned long ul_int;
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} result;
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};
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struct vmstat_stack {
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struct vmstat_result *head;
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};
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#define PROCPS_VMSTAT_VAL(rel_enum,type,stack) \
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stack -> head [ rel_enum ] . result . type
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struct procps_vmstat;
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int procps_vmstat_new (struct procps_vmstat **info);
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int procps_vmstat_ref (struct procps_vmstat *info);
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int procps_vmstat_unref (struct procps_vmstat **info);
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signed long procps_vmstat_get (
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struct procps_vmstat *info,
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enum vmstat_item item);
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struct vmstat_stack *procps_vmstat_select (
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struct procps_vmstat *info,
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enum vmstat_item *items,
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int numitems);
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__END_DECLS
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#endif
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