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procps/proc/vmstat.c
Craig Small 4a183003a0 library: Cygwin doesnt have /proc/vmstat 
Make the vmstat_read_failed() return non-error for Cygwin as
it always will error because /proc/vmstat doesn't exist.

Patch from Achim of the Cygwin project.

Signed-off-by: Craig Small <csmall@dropbear.xyz>
2022-05-31 20:41:30 +10:00

1511 lines
65 KiB
C
Raw Blame History

/*
* vmstat,c - virtual memory related definitions for libprocps
*
* Copyright (C) 1995 Martin Schulze <joey@infodrom.north.de>
* Copyright (C) 1996 Charles Blake <cblake@bbn.com>
* Copyright (C) 2003 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
*/
#include <errno.h>
#include <fcntl.h>
#include <search.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <proc/procps-private.h>
#include <proc/vmstat.h>
#define VMSTAT_FILE "/proc/vmstat"
#define VMSTAT_BUFF 8192
/* ------------------------------------------------------------- +
this provision can be used to help ensure that our Item_table |
was synchronized with the enumerators found in the associated |
header file. It's intended to be used locally (& temporarily) |
at least once at some point prior to publishing new releases! | */
// #define ITEMTABLE_DEBUG //----------------------------------- |
// ------------------------------------------------------------- +
/*
* Perhaps someday we'll all learn what is in these fields. But |
* that might require available linux documentation progressing |
* beyond a state that was acknowledged in the following thread |
*
* http://www.spinics.net/lists/linux-man/msg09096.html
*/
struct vmstat_data {
unsigned long allocstall_dma;
unsigned long allocstall_dma32;
unsigned long allocstall_high;
unsigned long allocstall_movable;
unsigned long allocstall_normal;
unsigned long balloon_deflate;
unsigned long balloon_inflate;
unsigned long balloon_migrate;
unsigned long compact_daemon_free_scanned;
unsigned long compact_daemon_migrate_scanned;
unsigned long compact_daemon_wake;
unsigned long compact_fail;
unsigned long compact_free_scanned;
unsigned long compact_isolated;
unsigned long compact_migrate_scanned;
unsigned long compact_stall;
unsigned long compact_success;
unsigned long drop_pagecache;
unsigned long drop_slab;
unsigned long htlb_buddy_alloc_fail;
unsigned long htlb_buddy_alloc_success;
unsigned long kswapd_high_wmark_hit_quickly;
unsigned long kswapd_inodesteal;
unsigned long kswapd_low_wmark_hit_quickly;
unsigned long nr_active_anon;
unsigned long nr_active_file;
unsigned long nr_anon_pages;
unsigned long nr_anon_transparent_hugepages;
unsigned long nr_bounce;
unsigned long nr_dirtied;
unsigned long nr_dirty;
unsigned long nr_dirty_background_threshold;
unsigned long nr_dirty_threshold;
unsigned long nr_file_hugepages;
unsigned long nr_file_pages;
unsigned long nr_file_pmdmapped;
unsigned long nr_foll_pin_acquired;
unsigned long nr_foll_pin_released;
unsigned long nr_free_cma;
unsigned long nr_free_pages;
unsigned long nr_inactive_anon;
unsigned long nr_inactive_file;
unsigned long nr_isolated_anon;
unsigned long nr_isolated_file;
unsigned long nr_kernel_misc_reclaimable;
unsigned long nr_kernel_stack;
unsigned long nr_mapped;
unsigned long nr_mlock;
unsigned long nr_page_table_pages;
unsigned long nr_shadow_call_stack;
unsigned long nr_shmem;
unsigned long nr_shmem_hugepages;
unsigned long nr_shmem_pmdmapped;
unsigned long nr_slab_reclaimable;
unsigned long nr_slab_unreclaimable;
/* nr_tlb_local_flush_all; CONFIG_DEBUG_TLBFLUSH only */
/* nr_tlb_local_flush_one; CONFIG_DEBUG_TLBFLUSH only */
/* nr_tlb_remote_flush; CONFIG_DEBUG_TLBFLUSH only */
/* nr_tlb_remote_flush_received; CONFIG_DEBUG_TLBFLUSH only */
unsigned long nr_unevictable;
unsigned long nr_unstable;
unsigned long nr_vmscan_immediate_reclaim;
unsigned long nr_vmscan_write;
unsigned long nr_writeback;
unsigned long nr_writeback_temp;
unsigned long nr_written;
unsigned long nr_zone_active_anon;
unsigned long nr_zone_active_file;
unsigned long nr_zone_inactive_anon;
unsigned long nr_zone_inactive_file;
unsigned long nr_zone_unevictable;
unsigned long nr_zone_write_pending;
unsigned long nr_zspages;
unsigned long numa_foreign;
unsigned long numa_hint_faults;
unsigned long numa_hint_faults_local;
unsigned long numa_hit;
unsigned long numa_huge_pte_updates;
unsigned long numa_interleave;
unsigned long numa_local;
unsigned long numa_miss;
unsigned long numa_other;
unsigned long numa_pages_migrated;
unsigned long numa_pte_updates;
unsigned long oom_kill;
unsigned long pageoutrun;
unsigned long pgactivate;
unsigned long pgalloc_dma;
unsigned long pgalloc_dma32;
unsigned long pgalloc_high;
unsigned long pgalloc_movable;
unsigned long pgalloc_normal;
unsigned long pgdeactivate;
unsigned long pgfault;
unsigned long pgfree;
unsigned long pginodesteal;
unsigned long pglazyfree;
unsigned long pglazyfreed;
unsigned long pgmajfault;
unsigned long pgmigrate_fail;
unsigned long pgmigrate_success;
unsigned long pgpgin;
unsigned long pgpgout;
unsigned long pgrefill;
unsigned long pgrotated;
unsigned long pgscan_anon;
unsigned long pgscan_direct;
unsigned long pgscan_direct_throttle;
unsigned long pgscan_file;
unsigned long pgscan_kswapd;
unsigned long pgskip_dma;
unsigned long pgskip_dma32;
unsigned long pgskip_high;
unsigned long pgskip_movable;
unsigned long pgskip_normal;
unsigned long pgsteal_anon;
unsigned long pgsteal_direct;
unsigned long pgsteal_file;
unsigned long pgsteal_kswapd;
unsigned long pswpin;
unsigned long pswpout;
unsigned long slabs_scanned;
unsigned long swap_ra;
unsigned long swap_ra_hit;
unsigned long thp_collapse_alloc;
unsigned long thp_collapse_alloc_failed;
unsigned long thp_deferred_split_page;
unsigned long thp_fault_alloc;
unsigned long thp_fault_fallback;
unsigned long thp_fault_fallback_charge;
unsigned long thp_file_alloc;
unsigned long thp_file_fallback;
unsigned long thp_file_fallback_charge;
unsigned long thp_file_mapped;
unsigned long thp_split_page;
unsigned long thp_split_page_failed;
unsigned long thp_split_pmd;
unsigned long thp_split_pud;
unsigned long thp_swpout;
unsigned long thp_swpout_fallback;
unsigned long thp_zero_page_alloc;
unsigned long thp_zero_page_alloc_failed;
unsigned long unevictable_pgs_cleared;
unsigned long unevictable_pgs_culled;
unsigned long unevictable_pgs_mlocked;
unsigned long unevictable_pgs_munlocked;
unsigned long unevictable_pgs_rescued;
unsigned long unevictable_pgs_scanned;
unsigned long unevictable_pgs_stranded;
/* vmacache_find_calls; CONFIG_DEBUG_VM_VMACACHE only */
/* vmacache_find_hits; CONFIG_DEBUG_VM_VMACACHE only */
unsigned long workingset_activate;
unsigned long workingset_nodereclaim;
unsigned long workingset_nodes;
unsigned long workingset_refault;
unsigned long workingset_restore;
unsigned long zone_reclaim_failed;
};
struct vmstat_hist {
struct vmstat_data new;
struct vmstat_data old;
};
struct stacks_extent {
int ext_numstacks;
struct stacks_extent *next;
struct vmstat_stack **stacks;
};
struct vmstat_info {
int refcount;
int vmstat_fd;
struct vmstat_hist hist;
int numitems;
enum vmstat_item *items;
struct stacks_extent *extents;
struct hsearch_data hashtab;
struct vmstat_result get_this;
time_t sav_secs;
};
// ___ Results 'Set' Support ||||||||||||||||||||||||||||||||||||||||||||||||||
#define setNAME(e) set_vmstat_ ## e
#define setDECL(e) static void setNAME(e) \
(struct vmstat_result *R, struct vmstat_hist *H)
// regular assignment
#define REG_set(e,x) setDECL(e) { R->result.ul_int = H->new. x; }
// delta assignment
#define HST_set(e,x) setDECL(e) { R->result.sl_int = ( H->new. x - H->old. x ); }
setDECL(noop) { (void)R; (void)H; }
setDECL(extra) { (void)H; R->result.ul_int = 0; }
REG_set(ALLOCSTALL_DMA, allocstall_dma)
REG_set(ALLOCSTALL_DMA32, allocstall_dma32)
REG_set(ALLOCSTALL_HIGH, allocstall_high)
REG_set(ALLOCSTALL_MOVABLE, allocstall_movable)
REG_set(ALLOCSTALL_NORMAL, allocstall_normal)
REG_set(BALLOON_DEFLATE, balloon_deflate)
REG_set(BALLOON_INFLATE, balloon_inflate)
REG_set(BALLOON_MIGRATE, balloon_migrate)
REG_set(COMPACT_DAEMON_FREE_SCANNED, compact_daemon_free_scanned)
REG_set(COMPACT_DAEMON_MIGRATE_SCANNED, compact_daemon_migrate_scanned)
REG_set(COMPACT_DAEMON_WAKE, compact_daemon_wake)
REG_set(COMPACT_FAIL, compact_fail)
REG_set(COMPACT_FREE_SCANNED, compact_free_scanned)
REG_set(COMPACT_ISOLATED, compact_isolated)
REG_set(COMPACT_MIGRATE_SCANNED, compact_migrate_scanned)
REG_set(COMPACT_STALL, compact_stall)
REG_set(COMPACT_SUCCESS, compact_success)
REG_set(DROP_PAGECACHE, drop_pagecache)
REG_set(DROP_SLAB, drop_slab)
REG_set(HTLB_BUDDY_ALLOC_FAIL, htlb_buddy_alloc_fail)
REG_set(HTLB_BUDDY_ALLOC_SUCCESS, htlb_buddy_alloc_success)
REG_set(KSWAPD_HIGH_WMARK_HIT_QUICKLY, kswapd_high_wmark_hit_quickly)
REG_set(KSWAPD_INODESTEAL, kswapd_inodesteal)
REG_set(KSWAPD_LOW_WMARK_HIT_QUICKLY, kswapd_low_wmark_hit_quickly)
REG_set(NR_ACTIVE_ANON, nr_active_anon)
REG_set(NR_ACTIVE_FILE, nr_active_file)
REG_set(NR_ANON_PAGES, nr_anon_pages)
REG_set(NR_ANON_TRANSPARENT_HUGEPAGES, nr_anon_transparent_hugepages)
REG_set(NR_BOUNCE, nr_bounce)
REG_set(NR_DIRTIED, nr_dirtied)
REG_set(NR_DIRTY, nr_dirty)
REG_set(NR_DIRTY_BACKGROUND_THRESHOLD, nr_dirty_background_threshold)
REG_set(NR_DIRTY_THRESHOLD, nr_dirty_threshold)
REG_set(NR_FILE_HUGEPAGES, nr_file_hugepages)
REG_set(NR_FILE_PAGES, nr_file_pages)
REG_set(NR_FILE_PMDMAPPED, nr_file_pmdmapped)
REG_set(NR_FOLL_PIN_ACQUIRED, nr_foll_pin_acquired)
REG_set(NR_FOLL_PIN_RELEASED, nr_foll_pin_released)
REG_set(NR_FREE_CMA, nr_free_cma)
REG_set(NR_FREE_PAGES, nr_free_pages)
REG_set(NR_INACTIVE_ANON, nr_inactive_anon)
REG_set(NR_INACTIVE_FILE, nr_inactive_file)
REG_set(NR_ISOLATED_ANON, nr_isolated_anon)
REG_set(NR_ISOLATED_FILE, nr_isolated_file)
REG_set(NR_KERNEL_MISC_RECLAIMABLE, nr_kernel_misc_reclaimable)
REG_set(NR_KERNEL_STACK, nr_kernel_stack)
REG_set(NR_MAPPED, nr_mapped)
REG_set(NR_MLOCK, nr_mlock)
REG_set(NR_PAGE_TABLE_PAGES, nr_page_table_pages)
REG_set(NR_SHADOW_CALL_STACK, nr_shadow_call_stack)
REG_set(NR_SHMEM, nr_shmem)
REG_set(NR_SHMEM_HUGEPAGES, nr_shmem_hugepages)
REG_set(NR_SHMEM_PMDMAPPED, nr_shmem_pmdmapped)
REG_set(NR_SLAB_RECLAIMABLE, nr_slab_reclaimable)
REG_set(NR_SLAB_UNRECLAIMABLE, nr_slab_unreclaimable)
REG_set(NR_UNEVICTABLE, nr_unevictable)
REG_set(NR_UNSTABLE, nr_unstable)
REG_set(NR_VMSCAN_IMMEDIATE_RECLAIM, nr_vmscan_immediate_reclaim)
REG_set(NR_VMSCAN_WRITE, nr_vmscan_write)
REG_set(NR_WRITEBACK, nr_writeback)
REG_set(NR_WRITEBACK_TEMP, nr_writeback_temp)
REG_set(NR_WRITTEN, nr_written)
REG_set(NR_ZONE_ACTIVE_ANON, nr_zone_active_anon)
REG_set(NR_ZONE_ACTIVE_FILE, nr_zone_active_file)
REG_set(NR_ZONE_INACTIVE_ANON, nr_zone_inactive_anon)
REG_set(NR_ZONE_INACTIVE_FILE, nr_zone_inactive_file)
REG_set(NR_ZONE_UNEVICTABLE, nr_zone_unevictable)
REG_set(NR_ZONE_WRITE_PENDING, nr_zone_write_pending)
REG_set(NR_ZSPAGES, nr_zspages)
REG_set(NUMA_FOREIGN, numa_foreign)
REG_set(NUMA_HINT_FAULTS, numa_hint_faults)
REG_set(NUMA_HINT_FAULTS_LOCAL, numa_hint_faults_local)
REG_set(NUMA_HIT, numa_hit)
REG_set(NUMA_HUGE_PTE_UPDATES, numa_huge_pte_updates)
REG_set(NUMA_INTERLEAVE, numa_interleave)
REG_set(NUMA_LOCAL, numa_local)
REG_set(NUMA_MISS, numa_miss)
REG_set(NUMA_OTHER, numa_other)
REG_set(NUMA_PAGES_MIGRATED, numa_pages_migrated)
REG_set(NUMA_PTE_UPDATES, numa_pte_updates)
REG_set(OOM_KILL, oom_kill)
REG_set(PAGEOUTRUN, pageoutrun)
REG_set(PGACTIVATE, pgactivate)
REG_set(PGALLOC_DMA, pgalloc_dma)
REG_set(PGALLOC_DMA32, pgalloc_dma32)
REG_set(PGALLOC_HIGH, pgalloc_high)
REG_set(PGALLOC_MOVABLE, pgalloc_movable)
REG_set(PGALLOC_NORMAL, pgalloc_normal)
REG_set(PGDEACTIVATE, pgdeactivate)
REG_set(PGFAULT, pgfault)
REG_set(PGFREE, pgfree)
REG_set(PGINODESTEAL, pginodesteal)
REG_set(PGLAZYFREE, pglazyfree)
REG_set(PGLAZYFREED, pglazyfreed)
REG_set(PGMAJFAULT, pgmajfault)
REG_set(PGMIGRATE_FAIL, pgmigrate_fail)
REG_set(PGMIGRATE_SUCCESS, pgmigrate_success)
REG_set(PGPGIN, pgpgin)
REG_set(PGPGOUT, pgpgout)
REG_set(PGREFILL, pgrefill)
REG_set(PGROTATED, pgrotated)
REG_set(PGSCAN_ANON, pgscan_anon)
REG_set(PGSCAN_DIRECT, pgscan_direct)
REG_set(PGSCAN_DIRECT_THROTTLE, pgscan_direct_throttle)
REG_set(PGSCAN_FILE, pgscan_file)
REG_set(PGSCAN_KSWAPD, pgscan_kswapd)
REG_set(PGSKIP_DMA, pgskip_dma)
REG_set(PGSKIP_DMA32, pgskip_dma32)
REG_set(PGSKIP_HIGH, pgskip_high)
REG_set(PGSKIP_MOVABLE, pgskip_movable)
REG_set(PGSKIP_NORMAL, pgskip_normal)
REG_set(PGSTEAL_ANON, pgsteal_anon)
REG_set(PGSTEAL_DIRECT, pgsteal_direct)
REG_set(PGSTEAL_FILE, pgsteal_file)
REG_set(PGSTEAL_KSWAPD, pgsteal_kswapd)
REG_set(PSWPIN, pswpin)
REG_set(PSWPOUT, pswpout)
REG_set(SLABS_SCANNED, slabs_scanned)
REG_set(SWAP_RA, swap_ra)
REG_set(SWAP_RA_HIT, swap_ra_hit)
REG_set(THP_COLLAPSE_ALLOC, thp_collapse_alloc)
REG_set(THP_COLLAPSE_ALLOC_FAILED, thp_collapse_alloc_failed)
REG_set(THP_DEFERRED_SPLIT_PAGE, thp_deferred_split_page)
REG_set(THP_FAULT_ALLOC, thp_fault_alloc)
REG_set(THP_FAULT_FALLBACK, thp_fault_fallback)
REG_set(THP_FAULT_FALLBACK_CHARGE, thp_fault_fallback_charge)
REG_set(THP_FILE_ALLOC, thp_file_alloc)
REG_set(THP_FILE_FALLBACK, thp_file_fallback)
REG_set(THP_FILE_FALLBACK_CHARGE, thp_file_fallback_charge)
REG_set(THP_FILE_MAPPED, thp_file_mapped)
REG_set(THP_SPLIT_PAGE, thp_split_page)
REG_set(THP_SPLIT_PAGE_FAILED, thp_split_page_failed)
REG_set(THP_SPLIT_PMD, thp_split_pmd)
REG_set(THP_SPLIT_PUD, thp_split_pud)
REG_set(THP_SWPOUT, thp_swpout)
REG_set(THP_SWPOUT_FALLBACK, thp_swpout_fallback)
REG_set(THP_ZERO_PAGE_ALLOC, thp_zero_page_alloc)
REG_set(THP_ZERO_PAGE_ALLOC_FAILED, thp_zero_page_alloc_failed)
REG_set(UNEVICTABLE_PGS_CLEARED, unevictable_pgs_cleared)
REG_set(UNEVICTABLE_PGS_CULLED, unevictable_pgs_culled)
REG_set(UNEVICTABLE_PGS_MLOCKED, unevictable_pgs_mlocked)
REG_set(UNEVICTABLE_PGS_MUNLOCKED, unevictable_pgs_munlocked)
REG_set(UNEVICTABLE_PGS_RESCUED, unevictable_pgs_rescued)
REG_set(UNEVICTABLE_PGS_SCANNED, unevictable_pgs_scanned)
REG_set(UNEVICTABLE_PGS_STRANDED, unevictable_pgs_stranded)
REG_set(WORKINGSET_ACTIVATE, workingset_activate)
REG_set(WORKINGSET_NODERECLAIM, workingset_nodereclaim)
REG_set(WORKINGSET_NODES, workingset_nodes)
REG_set(WORKINGSET_REFAULT, workingset_refault)
REG_set(WORKINGSET_RESTORE, workingset_restore)
REG_set(ZONE_RECLAIM_FAILED, zone_reclaim_failed)
HST_set(DELTA_ALLOCSTALL_DMA, allocstall_dma)
HST_set(DELTA_ALLOCSTALL_DMA32, allocstall_dma32)
HST_set(DELTA_ALLOCSTALL_HIGH, allocstall_high)
HST_set(DELTA_ALLOCSTALL_MOVABLE, allocstall_movable)
HST_set(DELTA_ALLOCSTALL_NORMAL, allocstall_normal)
HST_set(DELTA_BALLOON_DEFLATE, balloon_deflate)
HST_set(DELTA_BALLOON_INFLATE, balloon_inflate)
HST_set(DELTA_BALLOON_MIGRATE, balloon_migrate)
HST_set(DELTA_COMPACT_DAEMON_FREE_SCANNED, compact_daemon_free_scanned)
HST_set(DELTA_COMPACT_DAEMON_MIGRATE_SCANNED, compact_daemon_migrate_scanned)
HST_set(DELTA_COMPACT_DAEMON_WAKE, compact_daemon_wake)
HST_set(DELTA_COMPACT_FAIL, compact_fail)
HST_set(DELTA_COMPACT_FREE_SCANNED, compact_free_scanned)
HST_set(DELTA_COMPACT_ISOLATED, compact_isolated)
HST_set(DELTA_COMPACT_MIGRATE_SCANNED, compact_migrate_scanned)
HST_set(DELTA_COMPACT_STALL, compact_stall)
HST_set(DELTA_COMPACT_SUCCESS, compact_success)
HST_set(DELTA_DROP_PAGECACHE, drop_pagecache)
HST_set(DELTA_DROP_SLAB, drop_slab)
HST_set(DELTA_HTLB_BUDDY_ALLOC_FAIL, htlb_buddy_alloc_fail)
HST_set(DELTA_HTLB_BUDDY_ALLOC_SUCCESS, htlb_buddy_alloc_success)
HST_set(DELTA_KSWAPD_HIGH_WMARK_HIT_QUICKLY, kswapd_high_wmark_hit_quickly)
HST_set(DELTA_KSWAPD_INODESTEAL, kswapd_inodesteal)
HST_set(DELTA_KSWAPD_LOW_WMARK_HIT_QUICKLY, kswapd_low_wmark_hit_quickly)
HST_set(DELTA_NR_ACTIVE_ANON, nr_active_anon)
HST_set(DELTA_NR_ACTIVE_FILE, nr_active_file)
HST_set(DELTA_NR_ANON_PAGES, nr_anon_pages)
HST_set(DELTA_NR_ANON_TRANSPARENT_HUGEPAGES, nr_anon_transparent_hugepages)
HST_set(DELTA_NR_BOUNCE, nr_bounce)
HST_set(DELTA_NR_DIRTIED, nr_dirtied)
HST_set(DELTA_NR_DIRTY, nr_dirty)
HST_set(DELTA_NR_DIRTY_BACKGROUND_THRESHOLD, nr_dirty_background_threshold)
HST_set(DELTA_NR_DIRTY_THRESHOLD, nr_dirty_threshold)
HST_set(DELTA_NR_FILE_HUGEPAGES, nr_file_hugepages)
HST_set(DELTA_NR_FILE_PAGES, nr_file_pages)
HST_set(DELTA_NR_FILE_PMDMAPPED, nr_file_pmdmapped)
HST_set(DELTA_NR_FOLL_PIN_ACQUIRED, nr_foll_pin_acquired)
HST_set(DELTA_NR_FOLL_PIN_RELEASED, nr_foll_pin_released)
HST_set(DELTA_NR_FREE_CMA, nr_free_cma)
HST_set(DELTA_NR_FREE_PAGES, nr_free_pages)
HST_set(DELTA_NR_INACTIVE_ANON, nr_inactive_anon)
HST_set(DELTA_NR_INACTIVE_FILE, nr_inactive_file)
HST_set(DELTA_NR_ISOLATED_ANON, nr_isolated_anon)
HST_set(DELTA_NR_ISOLATED_FILE, nr_isolated_file)
HST_set(DELTA_NR_KERNEL_MISC_RECLAIMABLE, nr_kernel_misc_reclaimable)
HST_set(DELTA_NR_KERNEL_STACK, nr_kernel_stack)
HST_set(DELTA_NR_MAPPED, nr_mapped)
HST_set(DELTA_NR_MLOCK, nr_mlock)
HST_set(DELTA_NR_PAGE_TABLE_PAGES, nr_page_table_pages)
HST_set(DELTA_NR_SHADOW_CALL_STACK, nr_shadow_call_stack)
HST_set(DELTA_NR_SHMEM, nr_shmem)
HST_set(DELTA_NR_SHMEM_HUGEPAGES, nr_shmem_hugepages)
HST_set(DELTA_NR_SHMEM_PMDMAPPED, nr_shmem_pmdmapped)
HST_set(DELTA_NR_SLAB_RECLAIMABLE, nr_slab_reclaimable)
HST_set(DELTA_NR_SLAB_UNRECLAIMABLE, nr_slab_unreclaimable)
HST_set(DELTA_NR_UNEVICTABLE, nr_unevictable)
HST_set(DELTA_NR_UNSTABLE, nr_unstable)
HST_set(DELTA_NR_VMSCAN_IMMEDIATE_RECLAIM, nr_vmscan_immediate_reclaim)
HST_set(DELTA_NR_VMSCAN_WRITE, nr_vmscan_write)
HST_set(DELTA_NR_WRITEBACK, nr_writeback)
HST_set(DELTA_NR_WRITEBACK_TEMP, nr_writeback_temp)
HST_set(DELTA_NR_WRITTEN, nr_written)
HST_set(DELTA_NR_ZONE_ACTIVE_ANON, nr_zone_active_anon)
HST_set(DELTA_NR_ZONE_ACTIVE_FILE, nr_zone_active_file)
HST_set(DELTA_NR_ZONE_INACTIVE_ANON, nr_zone_inactive_anon)
HST_set(DELTA_NR_ZONE_INACTIVE_FILE, nr_zone_inactive_file)
HST_set(DELTA_NR_ZONE_UNEVICTABLE, nr_zone_unevictable)
HST_set(DELTA_NR_ZONE_WRITE_PENDING, nr_zone_write_pending)
HST_set(DELTA_NR_ZSPAGES, nr_zspages)
HST_set(DELTA_NUMA_FOREIGN, numa_foreign)
HST_set(DELTA_NUMA_HINT_FAULTS, numa_hint_faults)
HST_set(DELTA_NUMA_HINT_FAULTS_LOCAL, numa_hint_faults_local)
HST_set(DELTA_NUMA_HIT, numa_hit)
HST_set(DELTA_NUMA_HUGE_PTE_UPDATES, numa_huge_pte_updates)
HST_set(DELTA_NUMA_INTERLEAVE, numa_interleave)
HST_set(DELTA_NUMA_LOCAL, numa_local)
HST_set(DELTA_NUMA_MISS, numa_miss)
HST_set(DELTA_NUMA_OTHER, numa_other)
HST_set(DELTA_NUMA_PAGES_MIGRATED, numa_pages_migrated)
HST_set(DELTA_NUMA_PTE_UPDATES, numa_pte_updates)
HST_set(DELTA_OOM_KILL, oom_kill)
HST_set(DELTA_PAGEOUTRUN, pageoutrun)
HST_set(DELTA_PGACTIVATE, pgactivate)
HST_set(DELTA_PGALLOC_DMA, pgalloc_dma)
HST_set(DELTA_PGALLOC_DMA32, pgalloc_dma32)
HST_set(DELTA_PGALLOC_HIGH, pgalloc_high)
HST_set(DELTA_PGALLOC_MOVABLE, pgalloc_movable)
HST_set(DELTA_PGALLOC_NORMAL, pgalloc_normal)
HST_set(DELTA_PGDEACTIVATE, pgdeactivate)
HST_set(DELTA_PGFAULT, pgfault)
HST_set(DELTA_PGFREE, pgfree)
HST_set(DELTA_PGINODESTEAL, pginodesteal)
HST_set(DELTA_PGLAZYFREE, pglazyfree)
HST_set(DELTA_PGLAZYFREED, pglazyfreed)
HST_set(DELTA_PGMAJFAULT, pgmajfault)
HST_set(DELTA_PGMIGRATE_FAIL, pgmigrate_fail)
HST_set(DELTA_PGMIGRATE_SUCCESS, pgmigrate_success)
HST_set(DELTA_PGPGIN, pgpgin)
HST_set(DELTA_PGPGOUT, pgpgout)
HST_set(DELTA_PGREFILL, pgrefill)
HST_set(DELTA_PGROTATED, pgrotated)
HST_set(DELTA_PGSCAN_ANON, pgscan_anon)
HST_set(DELTA_PGSCAN_DIRECT, pgscan_direct)
HST_set(DELTA_PGSCAN_DIRECT_THROTTLE, pgscan_direct_throttle)
HST_set(DELTA_PGSCAN_FILE, pgscan_file)
HST_set(DELTA_PGSCAN_KSWAPD, pgscan_kswapd)
HST_set(DELTA_PGSKIP_DMA, pgskip_dma)
HST_set(DELTA_PGSKIP_DMA32, pgskip_dma32)
HST_set(DELTA_PGSKIP_HIGH, pgskip_high)
HST_set(DELTA_PGSKIP_MOVABLE, pgskip_movable)
HST_set(DELTA_PGSKIP_NORMAL, pgskip_normal)
HST_set(DELTA_PGSTEAL_ANON, pgsteal_anon)
HST_set(DELTA_PGSTEAL_DIRECT, pgsteal_direct)
HST_set(DELTA_PGSTEAL_FILE, pgsteal_file)
HST_set(DELTA_PGSTEAL_KSWAPD, pgsteal_kswapd)
HST_set(DELTA_PSWPIN, pswpin)
HST_set(DELTA_PSWPOUT, pswpout)
HST_set(DELTA_SLABS_SCANNED, slabs_scanned)
HST_set(DELTA_SWAP_RA, swap_ra)
HST_set(DELTA_SWAP_RA_HIT, swap_ra_hit)
HST_set(DELTA_THP_COLLAPSE_ALLOC, thp_collapse_alloc)
HST_set(DELTA_THP_COLLAPSE_ALLOC_FAILED, thp_collapse_alloc_failed)
HST_set(DELTA_THP_DEFERRED_SPLIT_PAGE, thp_deferred_split_page)
HST_set(DELTA_THP_FAULT_ALLOC, thp_fault_alloc)
HST_set(DELTA_THP_FAULT_FALLBACK, thp_fault_fallback)
HST_set(DELTA_THP_FAULT_FALLBACK_CHARGE, thp_fault_fallback_charge)
HST_set(DELTA_THP_FILE_ALLOC, thp_file_alloc)
HST_set(DELTA_THP_FILE_FALLBACK, thp_file_fallback)
HST_set(DELTA_THP_FILE_FALLBACK_CHARGE, thp_file_fallback_charge)
HST_set(DELTA_THP_FILE_MAPPED, thp_file_mapped)
HST_set(DELTA_THP_SPLIT_PAGE, thp_split_page)
HST_set(DELTA_THP_SPLIT_PAGE_FAILED, thp_split_page_failed)
HST_set(DELTA_THP_SPLIT_PMD, thp_split_pmd)
HST_set(DELTA_THP_SPLIT_PUD, thp_split_pud)
HST_set(DELTA_THP_SWPOUT, thp_swpout)
HST_set(DELTA_THP_SWPOUT_FALLBACK, thp_swpout_fallback)
HST_set(DELTA_THP_ZERO_PAGE_ALLOC, thp_zero_page_alloc)
HST_set(DELTA_THP_ZERO_PAGE_ALLOC_FAILED, thp_zero_page_alloc_failed)
HST_set(DELTA_UNEVICTABLE_PGS_CLEARED, unevictable_pgs_cleared)
HST_set(DELTA_UNEVICTABLE_PGS_CULLED, unevictable_pgs_culled)
HST_set(DELTA_UNEVICTABLE_PGS_MLOCKED, unevictable_pgs_mlocked)
HST_set(DELTA_UNEVICTABLE_PGS_MUNLOCKED, unevictable_pgs_munlocked)
HST_set(DELTA_UNEVICTABLE_PGS_RESCUED, unevictable_pgs_rescued)
HST_set(DELTA_UNEVICTABLE_PGS_SCANNED, unevictable_pgs_scanned)
HST_set(DELTA_UNEVICTABLE_PGS_STRANDED, unevictable_pgs_stranded)
HST_set(DELTA_WORKINGSET_ACTIVATE, workingset_activate)
HST_set(DELTA_WORKINGSET_NODERECLAIM, workingset_nodereclaim)
HST_set(DELTA_WORKINGSET_NODES, workingset_nodes)
HST_set(DELTA_WORKINGSET_REFAULT, workingset_refault)
HST_set(DELTA_WORKINGSET_RESTORE, workingset_restore)
HST_set(DELTA_ZONE_RECLAIM_FAILED, zone_reclaim_failed)
#undef setDECL
#undef REG_set
#undef HST_set
// ___ Controlling Table ||||||||||||||||||||||||||||||||||||||||||||||||||||||
typedef void (*SET_t)(struct vmstat_result *, struct vmstat_hist *);
#ifdef ITEMTABLE_DEBUG
#define RS(e) (SET_t)setNAME(e), VMSTAT_ ## e, STRINGIFY(VMSTAT_ ## e)
#else
#define RS(e) (SET_t)setNAME(e)
#endif
#define TS(t) STRINGIFY(t)
#define TS_noop ""
/*
* Need it be said?
* This table must be kept in the exact same order as
* those 'enum vmstat_item' guys ! */
static struct {
SET_t setsfunc; // the actual result setting routine
#ifdef ITEMTABLE_DEBUG
int enumnumb; // enumerator (must match position!)
char *enum2str; // enumerator name as a char* string
#endif
char *type2str; // the result type as a string value
} Item_table[] = {
/* setsfunc type2str
----------------------------------------- ---------- */
{ RS(noop), TS_noop },
{ RS(extra), TS_noop },
{ RS(ALLOCSTALL_DMA), TS(ul_int) },
{ RS(ALLOCSTALL_DMA32), TS(ul_int) },
{ RS(ALLOCSTALL_HIGH), TS(ul_int) },
{ RS(ALLOCSTALL_MOVABLE), TS(ul_int) },
{ RS(ALLOCSTALL_NORMAL), TS(ul_int) },
{ RS(BALLOON_DEFLATE), TS(ul_int) },
{ RS(BALLOON_INFLATE), TS(ul_int) },
{ RS(BALLOON_MIGRATE), TS(ul_int) },
{ RS(COMPACT_DAEMON_FREE_SCANNED), TS(ul_int) },
{ RS(COMPACT_DAEMON_MIGRATE_SCANNED), TS(ul_int) },
{ RS(COMPACT_DAEMON_WAKE), TS(ul_int) },
{ RS(COMPACT_FAIL), TS(ul_int) },
{ RS(COMPACT_FREE_SCANNED), TS(ul_int) },
{ RS(COMPACT_ISOLATED), TS(ul_int) },
{ RS(COMPACT_MIGRATE_SCANNED), TS(ul_int) },
{ RS(COMPACT_STALL), TS(ul_int) },
{ RS(COMPACT_SUCCESS), TS(ul_int) },
{ RS(DROP_PAGECACHE), TS(ul_int) },
{ RS(DROP_SLAB), TS(ul_int) },
{ RS(HTLB_BUDDY_ALLOC_FAIL), TS(ul_int) },
{ RS(HTLB_BUDDY_ALLOC_SUCCESS), TS(ul_int) },
{ RS(KSWAPD_HIGH_WMARK_HIT_QUICKLY), TS(ul_int) },
{ RS(KSWAPD_INODESTEAL), TS(ul_int) },
{ RS(KSWAPD_LOW_WMARK_HIT_QUICKLY), TS(ul_int) },
{ RS(NR_ACTIVE_ANON), TS(ul_int) },
{ RS(NR_ACTIVE_FILE), TS(ul_int) },
{ RS(NR_ANON_PAGES), TS(ul_int) },
{ RS(NR_ANON_TRANSPARENT_HUGEPAGES), TS(ul_int) },
{ RS(NR_BOUNCE), TS(ul_int) },
{ RS(NR_DIRTIED), TS(ul_int) },
{ RS(NR_DIRTY), TS(ul_int) },
{ RS(NR_DIRTY_BACKGROUND_THRESHOLD), TS(ul_int) },
{ RS(NR_DIRTY_THRESHOLD), TS(ul_int) },
{ RS(NR_FILE_HUGEPAGES), TS(ul_int) },
{ RS(NR_FILE_PAGES), TS(ul_int) },
{ RS(NR_FILE_PMDMAPPED), TS(ul_int) },
{ RS(NR_FOLL_PIN_ACQUIRED), TS(ul_int) },
{ RS(NR_FOLL_PIN_RELEASED), TS(ul_int) },
{ RS(NR_FREE_CMA), TS(ul_int) },
{ RS(NR_FREE_PAGES), TS(ul_int) },
{ RS(NR_INACTIVE_ANON), TS(ul_int) },
{ RS(NR_INACTIVE_FILE), TS(ul_int) },
{ RS(NR_ISOLATED_ANON), TS(ul_int) },
{ RS(NR_ISOLATED_FILE), TS(ul_int) },
{ RS(NR_KERNEL_MISC_RECLAIMABLE), TS(ul_int) },
{ RS(NR_KERNEL_STACK), TS(ul_int) },
{ RS(NR_MAPPED), TS(ul_int) },
{ RS(NR_MLOCK), TS(ul_int) },
{ RS(NR_PAGE_TABLE_PAGES), TS(ul_int) },
{ RS(NR_SHADOW_CALL_STACK), TS(ul_int) },
{ RS(NR_SHMEM), TS(ul_int) },
{ RS(NR_SHMEM_HUGEPAGES), TS(ul_int) },
{ RS(NR_SHMEM_PMDMAPPED), TS(ul_int) },
{ RS(NR_SLAB_RECLAIMABLE), TS(ul_int) },
{ RS(NR_SLAB_UNRECLAIMABLE), TS(ul_int) },
{ RS(NR_UNEVICTABLE), TS(ul_int) },
{ RS(NR_UNSTABLE), TS(ul_int) },
{ RS(NR_VMSCAN_IMMEDIATE_RECLAIM), TS(ul_int) },
{ RS(NR_VMSCAN_WRITE), TS(ul_int) },
{ RS(NR_WRITEBACK), TS(ul_int) },
{ RS(NR_WRITEBACK_TEMP), TS(ul_int) },
{ RS(NR_WRITTEN), TS(ul_int) },
{ RS(NR_ZONE_ACTIVE_ANON), TS(ul_int) },
{ RS(NR_ZONE_ACTIVE_FILE), TS(ul_int) },
{ RS(NR_ZONE_INACTIVE_ANON), TS(ul_int) },
{ RS(NR_ZONE_INACTIVE_FILE), TS(ul_int) },
{ RS(NR_ZONE_UNEVICTABLE), TS(ul_int) },
{ RS(NR_ZONE_WRITE_PENDING), TS(ul_int) },
{ RS(NR_ZSPAGES), TS(ul_int) },
{ RS(NUMA_FOREIGN), TS(ul_int) },
{ RS(NUMA_HINT_FAULTS), TS(ul_int) },
{ RS(NUMA_HINT_FAULTS_LOCAL), TS(ul_int) },
{ RS(NUMA_HIT), TS(ul_int) },
{ RS(NUMA_HUGE_PTE_UPDATES), TS(ul_int) },
{ RS(NUMA_INTERLEAVE), TS(ul_int) },
{ RS(NUMA_LOCAL), TS(ul_int) },
{ RS(NUMA_MISS), TS(ul_int) },
{ RS(NUMA_OTHER), TS(ul_int) },
{ RS(NUMA_PAGES_MIGRATED), TS(ul_int) },
{ RS(NUMA_PTE_UPDATES), TS(ul_int) },
{ RS(OOM_KILL), TS(ul_int) },
{ RS(PAGEOUTRUN), TS(ul_int) },
{ RS(PGACTIVATE), TS(ul_int) },
{ RS(PGALLOC_DMA), TS(ul_int) },
{ RS(PGALLOC_DMA32), TS(ul_int) },
{ RS(PGALLOC_HIGH), TS(ul_int) },
{ RS(PGALLOC_MOVABLE), TS(ul_int) },
{ RS(PGALLOC_NORMAL), TS(ul_int) },
{ RS(PGDEACTIVATE), TS(ul_int) },
{ RS(PGFAULT), TS(ul_int) },
{ RS(PGFREE), TS(ul_int) },
{ RS(PGINODESTEAL), TS(ul_int) },
{ RS(PGLAZYFREE), TS(ul_int) },
{ RS(PGLAZYFREED), TS(ul_int) },
{ RS(PGMAJFAULT), TS(ul_int) },
{ RS(PGMIGRATE_FAIL), TS(ul_int) },
{ RS(PGMIGRATE_SUCCESS), TS(ul_int) },
{ RS(PGPGIN), TS(ul_int) },
{ RS(PGPGOUT), TS(ul_int) },
{ RS(PGREFILL), TS(ul_int) },
{ RS(PGROTATED), TS(ul_int) },
{ RS(PGSCAN_ANON), TS(ul_int) },
{ RS(PGSCAN_DIRECT), TS(ul_int) },
{ RS(PGSCAN_DIRECT_THROTTLE), TS(ul_int) },
{ RS(PGSCAN_FILE), TS(ul_int) },
{ RS(PGSCAN_KSWAPD), TS(ul_int) },
{ RS(PGSKIP_DMA), TS(ul_int) },
{ RS(PGSKIP_DMA32), TS(ul_int) },
{ RS(PGSKIP_HIGH), TS(ul_int) },
{ RS(PGSKIP_MOVABLE), TS(ul_int) },
{ RS(PGSKIP_NORMAL), TS(ul_int) },
{ RS(PGSTEAL_ANON), TS(ul_int) },
{ RS(PGSTEAL_DIRECT), TS(ul_int) },
{ RS(PGSTEAL_FILE), TS(ul_int) },
{ RS(PGSTEAL_KSWAPD), TS(ul_int) },
{ RS(PSWPIN), TS(ul_int) },
{ RS(PSWPOUT), TS(ul_int) },
{ RS(SLABS_SCANNED), TS(ul_int) },
{ RS(SWAP_RA), TS(ul_int) },
{ RS(SWAP_RA_HIT), TS(ul_int) },
{ RS(THP_COLLAPSE_ALLOC), TS(ul_int) },
{ RS(THP_COLLAPSE_ALLOC_FAILED), TS(ul_int) },
{ RS(THP_DEFERRED_SPLIT_PAGE), TS(ul_int) },
{ RS(THP_FAULT_ALLOC), TS(ul_int) },
{ RS(THP_FAULT_FALLBACK), TS(ul_int) },
{ RS(THP_FAULT_FALLBACK_CHARGE), TS(ul_int) },
{ RS(THP_FILE_ALLOC), TS(ul_int) },
{ RS(THP_FILE_FALLBACK), TS(ul_int) },
{ RS(THP_FILE_FALLBACK_CHARGE), TS(ul_int) },
{ RS(THP_FILE_MAPPED), TS(ul_int) },
{ RS(THP_SPLIT_PAGE), TS(ul_int) },
{ RS(THP_SPLIT_PAGE_FAILED), TS(ul_int) },
{ RS(THP_SPLIT_PMD), TS(ul_int) },
{ RS(THP_SPLIT_PUD), TS(ul_int) },
{ RS(THP_SWPOUT), TS(ul_int) },
{ RS(THP_SWPOUT_FALLBACK), TS(ul_int) },
{ RS(THP_ZERO_PAGE_ALLOC), TS(ul_int) },
{ RS(THP_ZERO_PAGE_ALLOC_FAILED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_CLEARED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_CULLED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_MLOCKED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_MUNLOCKED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_RESCUED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_SCANNED), TS(ul_int) },
{ RS(UNEVICTABLE_PGS_STRANDED), TS(ul_int) },
{ RS(WORKINGSET_ACTIVATE), TS(ul_int) },
{ RS(WORKINGSET_NODERECLAIM), TS(ul_int) },
{ RS(WORKINGSET_NODES), TS(ul_int) },
{ RS(WORKINGSET_REFAULT), TS(ul_int) },
{ RS(WORKINGSET_RESTORE), TS(ul_int) },
{ RS(ZONE_RECLAIM_FAILED), TS(ul_int) },
{ RS(DELTA_ALLOCSTALL_DMA), TS(sl_int) },
{ RS(DELTA_ALLOCSTALL_DMA32), TS(sl_int) },
{ RS(DELTA_ALLOCSTALL_HIGH), TS(sl_int) },
{ RS(DELTA_ALLOCSTALL_MOVABLE), TS(sl_int) },
{ RS(DELTA_ALLOCSTALL_NORMAL), TS(sl_int) },
{ RS(DELTA_BALLOON_DEFLATE), TS(sl_int) },
{ RS(DELTA_BALLOON_INFLATE), TS(sl_int) },
{ RS(DELTA_BALLOON_MIGRATE), TS(sl_int) },
{ RS(DELTA_COMPACT_DAEMON_FREE_SCANNED), TS(sl_int) },
{ RS(DELTA_COMPACT_DAEMON_MIGRATE_SCANNED), TS(sl_int) },
{ RS(DELTA_COMPACT_DAEMON_WAKE), TS(sl_int) },
{ RS(DELTA_COMPACT_FAIL), TS(sl_int) },
{ RS(DELTA_COMPACT_FREE_SCANNED), TS(sl_int) },
{ RS(DELTA_COMPACT_ISOLATED), TS(sl_int) },
{ RS(DELTA_COMPACT_MIGRATE_SCANNED), TS(sl_int) },
{ RS(DELTA_COMPACT_STALL), TS(sl_int) },
{ RS(DELTA_COMPACT_SUCCESS), TS(sl_int) },
{ RS(DELTA_DROP_PAGECACHE), TS(sl_int) },
{ RS(DELTA_DROP_SLAB), TS(sl_int) },
{ RS(DELTA_HTLB_BUDDY_ALLOC_FAIL), TS(sl_int) },
{ RS(DELTA_HTLB_BUDDY_ALLOC_SUCCESS), TS(sl_int) },
{ RS(DELTA_KSWAPD_HIGH_WMARK_HIT_QUICKLY), TS(sl_int) },
{ RS(DELTA_KSWAPD_INODESTEAL), TS(sl_int) },
{ RS(DELTA_KSWAPD_LOW_WMARK_HIT_QUICKLY), TS(sl_int) },
{ RS(DELTA_NR_ACTIVE_ANON), TS(sl_int) },
{ RS(DELTA_NR_ACTIVE_FILE), TS(sl_int) },
{ RS(DELTA_NR_ANON_PAGES), TS(sl_int) },
{ RS(DELTA_NR_ANON_TRANSPARENT_HUGEPAGES), TS(sl_int) },
{ RS(DELTA_NR_BOUNCE), TS(sl_int) },
{ RS(DELTA_NR_DIRTIED), TS(sl_int) },
{ RS(DELTA_NR_DIRTY), TS(sl_int) },
{ RS(DELTA_NR_DIRTY_BACKGROUND_THRESHOLD), TS(sl_int) },
{ RS(DELTA_NR_DIRTY_THRESHOLD), TS(sl_int) },
{ RS(DELTA_NR_FILE_HUGEPAGES), TS(sl_int) },
{ RS(DELTA_NR_FILE_PAGES), TS(sl_int) },
{ RS(DELTA_NR_FILE_PMDMAPPED), TS(sl_int) },
{ RS(DELTA_NR_FOLL_PIN_ACQUIRED), TS(sl_int) },
{ RS(DELTA_NR_FOLL_PIN_RELEASED), TS(sl_int) },
{ RS(DELTA_NR_FREE_CMA), TS(sl_int) },
{ RS(DELTA_NR_FREE_PAGES), TS(sl_int) },
{ RS(DELTA_NR_INACTIVE_ANON), TS(sl_int) },
{ RS(DELTA_NR_INACTIVE_FILE), TS(sl_int) },
{ RS(DELTA_NR_ISOLATED_ANON), TS(sl_int) },
{ RS(DELTA_NR_ISOLATED_FILE), TS(sl_int) },
{ RS(DELTA_NR_KERNEL_MISC_RECLAIMABLE), TS(sl_int) },
{ RS(DELTA_NR_KERNEL_STACK), TS(sl_int) },
{ RS(DELTA_NR_MAPPED), TS(sl_int) },
{ RS(DELTA_NR_MLOCK), TS(sl_int) },
{ RS(DELTA_NR_PAGE_TABLE_PAGES), TS(sl_int) },
{ RS(DELTA_NR_SHADOW_CALL_STACK), TS(sl_int) },
{ RS(DELTA_NR_SHMEM), TS(sl_int) },
{ RS(DELTA_NR_SHMEM_HUGEPAGES), TS(sl_int) },
{ RS(DELTA_NR_SHMEM_PMDMAPPED), TS(sl_int) },
{ RS(DELTA_NR_SLAB_RECLAIMABLE), TS(sl_int) },
{ RS(DELTA_NR_SLAB_UNRECLAIMABLE), TS(sl_int) },
{ RS(DELTA_NR_UNEVICTABLE), TS(sl_int) },
{ RS(DELTA_NR_UNSTABLE), TS(sl_int) },
{ RS(DELTA_NR_VMSCAN_IMMEDIATE_RECLAIM), TS(sl_int) },
{ RS(DELTA_NR_VMSCAN_WRITE), TS(sl_int) },
{ RS(DELTA_NR_WRITEBACK), TS(sl_int) },
{ RS(DELTA_NR_WRITEBACK_TEMP), TS(sl_int) },
{ RS(DELTA_NR_WRITTEN), TS(sl_int) },
{ RS(DELTA_NR_ZONE_ACTIVE_ANON), TS(sl_int) },
{ RS(DELTA_NR_ZONE_ACTIVE_FILE), TS(sl_int) },
{ RS(DELTA_NR_ZONE_INACTIVE_ANON), TS(sl_int) },
{ RS(DELTA_NR_ZONE_INACTIVE_FILE), TS(sl_int) },
{ RS(DELTA_NR_ZONE_UNEVICTABLE), TS(sl_int) },
{ RS(DELTA_NR_ZONE_WRITE_PENDING), TS(sl_int) },
{ RS(DELTA_NR_ZSPAGES), TS(sl_int) },
{ RS(DELTA_NUMA_FOREIGN), TS(sl_int) },
{ RS(DELTA_NUMA_HINT_FAULTS), TS(sl_int) },
{ RS(DELTA_NUMA_HINT_FAULTS_LOCAL), TS(sl_int) },
{ RS(DELTA_NUMA_HIT), TS(sl_int) },
{ RS(DELTA_NUMA_HUGE_PTE_UPDATES), TS(sl_int) },
{ RS(DELTA_NUMA_INTERLEAVE), TS(sl_int) },
{ RS(DELTA_NUMA_LOCAL), TS(sl_int) },
{ RS(DELTA_NUMA_MISS), TS(sl_int) },
{ RS(DELTA_NUMA_OTHER), TS(sl_int) },
{ RS(DELTA_NUMA_PAGES_MIGRATED), TS(sl_int) },
{ RS(DELTA_NUMA_PTE_UPDATES), TS(sl_int) },
{ RS(DELTA_OOM_KILL), TS(sl_int) },
{ RS(DELTA_PAGEOUTRUN), TS(sl_int) },
{ RS(DELTA_PGACTIVATE), TS(sl_int) },
{ RS(DELTA_PGALLOC_DMA), TS(sl_int) },
{ RS(DELTA_PGALLOC_DMA32), TS(sl_int) },
{ RS(DELTA_PGALLOC_HIGH), TS(sl_int) },
{ RS(DELTA_PGALLOC_MOVABLE), TS(sl_int) },
{ RS(DELTA_PGALLOC_NORMAL), TS(sl_int) },
{ RS(DELTA_PGDEACTIVATE), TS(sl_int) },
{ RS(DELTA_PGFAULT), TS(sl_int) },
{ RS(DELTA_PGFREE), TS(sl_int) },
{ RS(DELTA_PGINODESTEAL), TS(sl_int) },
{ RS(DELTA_PGLAZYFREE), TS(sl_int) },
{ RS(DELTA_PGLAZYFREED), TS(sl_int) },
{ RS(DELTA_PGMAJFAULT), TS(sl_int) },
{ RS(DELTA_PGMIGRATE_FAIL), TS(sl_int) },
{ RS(DELTA_PGMIGRATE_SUCCESS), TS(sl_int) },
{ RS(DELTA_PGPGIN), TS(sl_int) },
{ RS(DELTA_PGPGOUT), TS(sl_int) },
{ RS(DELTA_PGREFILL), TS(sl_int) },
{ RS(DELTA_PGROTATED), TS(sl_int) },
{ RS(DELTA_PGSCAN_ANON), TS(sl_int) },
{ RS(DELTA_PGSCAN_DIRECT), TS(sl_int) },
{ RS(DELTA_PGSCAN_DIRECT_THROTTLE), TS(sl_int) },
{ RS(DELTA_PGSCAN_FILE), TS(sl_int) },
{ RS(DELTA_PGSCAN_KSWAPD), TS(sl_int) },
{ RS(DELTA_PGSKIP_DMA), TS(sl_int) },
{ RS(DELTA_PGSKIP_DMA32), TS(sl_int) },
{ RS(DELTA_PGSKIP_HIGH), TS(sl_int) },
{ RS(DELTA_PGSKIP_MOVABLE), TS(sl_int) },
{ RS(DELTA_PGSKIP_NORMAL), TS(sl_int) },
{ RS(DELTA_PGSTEAL_ANON), TS(sl_int) },
{ RS(DELTA_PGSTEAL_DIRECT), TS(sl_int) },
{ RS(DELTA_PGSTEAL_FILE), TS(sl_int) },
{ RS(DELTA_PGSTEAL_KSWAPD), TS(sl_int) },
{ RS(DELTA_PSWPIN), TS(sl_int) },
{ RS(DELTA_PSWPOUT), TS(sl_int) },
{ RS(DELTA_SLABS_SCANNED), TS(sl_int) },
{ RS(DELTA_SWAP_RA), TS(sl_int) },
{ RS(DELTA_SWAP_RA_HIT), TS(sl_int) },
{ RS(DELTA_THP_COLLAPSE_ALLOC), TS(sl_int) },
{ RS(DELTA_THP_COLLAPSE_ALLOC_FAILED), TS(sl_int) },
{ RS(DELTA_THP_DEFERRED_SPLIT_PAGE), TS(sl_int) },
{ RS(DELTA_THP_FAULT_ALLOC), TS(sl_int) },
{ RS(DELTA_THP_FAULT_FALLBACK), TS(sl_int) },
{ RS(DELTA_THP_FAULT_FALLBACK_CHARGE), TS(sl_int) },
{ RS(DELTA_THP_FILE_ALLOC), TS(sl_int) },
{ RS(DELTA_THP_FILE_FALLBACK), TS(sl_int) },
{ RS(DELTA_THP_FILE_FALLBACK_CHARGE), TS(sl_int) },
{ RS(DELTA_THP_FILE_MAPPED), TS(sl_int) },
{ RS(DELTA_THP_SPLIT_PAGE), TS(sl_int) },
{ RS(DELTA_THP_SPLIT_PAGE_FAILED), TS(sl_int) },
{ RS(DELTA_THP_SPLIT_PMD), TS(sl_int) },
{ RS(DELTA_THP_SPLIT_PUD), TS(sl_int) },
{ RS(DELTA_THP_SWPOUT), TS(sl_int) },
{ RS(DELTA_THP_SWPOUT_FALLBACK), TS(sl_int) },
{ RS(DELTA_THP_ZERO_PAGE_ALLOC), TS(sl_int) },
{ RS(DELTA_THP_ZERO_PAGE_ALLOC_FAILED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_CLEARED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_CULLED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_MLOCKED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_MUNLOCKED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_RESCUED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_SCANNED), TS(sl_int) },
{ RS(DELTA_UNEVICTABLE_PGS_STRANDED), TS(sl_int) },
{ RS(DELTA_WORKINGSET_ACTIVATE), TS(sl_int) },
{ RS(DELTA_WORKINGSET_NODERECLAIM), TS(sl_int) },
{ RS(DELTA_WORKINGSET_NODES), TS(sl_int) },
{ RS(DELTA_WORKINGSET_REFAULT), TS(sl_int) },
{ RS(DELTA_WORKINGSET_RESTORE), TS(sl_int) },
{ RS(DELTA_ZONE_RECLAIM_FAILED), TS(sl_int) },
};
/* please note,
* this enum MUST be 1 greater than the highest value of any enum */
enum vmstat_item VMSTAT_logical_end = MAXTABLE(Item_table);
#undef setNAME
#undef RS
// ___ Private Functions ||||||||||||||||||||||||||||||||||||||||||||||||||||||
static inline void vmstat_assign_results (
struct vmstat_stack *stack,
struct vmstat_hist *hist)
{
struct vmstat_result *this = stack->head;
for (;;) {
enum vmstat_item item = this->item;
if (item >= VMSTAT_logical_end)
break;
Item_table[item].setsfunc(this, hist);
++this;
}
return;
} // end: vmstat_assign_results
static void vmstat_extents_free_all (
struct vmstat_info *info)
{
while (info->extents) {
struct stacks_extent *p = info->extents;
info->extents = info->extents->next;
free(p);
};
} // end: vmstat_extents_free_all
static inline struct vmstat_result *vmstat_itemize_stack (
struct vmstat_result *p,
int depth,
enum vmstat_item *items)
{
struct vmstat_result *p_sav = p;
int i;
for (i = 0; i < depth; i++) {
p->item = items[i];
++p;
}
return p_sav;
} // end: vmstat_itemize_stack
static inline int vmstat_items_check_failed (
int numitems,
enum vmstat_item *items)
{
int i;
/* if an enum is passed instead of an address of one or more enums, ol' gcc
* will silently convert it to an address (possibly NULL). only clang will
* offer any sort of warning like the following:
*
* warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'enum vmstat_item *'
* my_stack = procps_vmstat_select(info, VMSTAT_noop, num);
* ^~~~~~~~~~~~~~~~
*/
if (numitems < 1
|| (void *)items < (void *)(unsigned long)(2 * VMSTAT_logical_end))
return 1;
for (i = 0; i < numitems; i++) {
// a vmstat_item is currently unsigned, but we'll protect our future
if (items[i] < 0)
return 1;
if (items[i] >= VMSTAT_logical_end)
return 1;
}
return 0;
} // end: vmstat_items_check_failed
static int vmstat_make_hash_failed (
struct vmstat_info *info)
{
#define htVAL(f) e.key = STRINGIFY(f); e.data = &info->hist.new. f; \
if (!hsearch_r(e, ENTER, &ep, &info->hashtab)) return 1;
ENTRY e, *ep;
size_t n;
n = sizeof(struct vmstat_data) / sizeof(unsigned long);
// we'll follow the hsearch recommendation of an extra 25%
if (!hcreate_r(n + (n / 4), &info->hashtab))
return 1;
htVAL(allocstall_dma)
htVAL(allocstall_dma32)
htVAL(allocstall_high)
htVAL(allocstall_movable)
htVAL(allocstall_normal)
htVAL(balloon_deflate)
htVAL(balloon_inflate)
htVAL(balloon_migrate)
htVAL(compact_daemon_free_scanned)
htVAL(compact_daemon_migrate_scanned)
htVAL(compact_daemon_wake)
htVAL(compact_fail)
htVAL(compact_free_scanned)
htVAL(compact_isolated)
htVAL(compact_migrate_scanned)
htVAL(compact_stall)
htVAL(compact_success)
htVAL(drop_pagecache)
htVAL(drop_slab)
htVAL(htlb_buddy_alloc_fail)
htVAL(htlb_buddy_alloc_success)
htVAL(kswapd_high_wmark_hit_quickly)
htVAL(kswapd_inodesteal)
htVAL(kswapd_low_wmark_hit_quickly)
htVAL(nr_active_anon)
htVAL(nr_active_file)
htVAL(nr_anon_pages)
htVAL(nr_anon_transparent_hugepages)
htVAL(nr_bounce)
htVAL(nr_dirtied)
htVAL(nr_dirty)
htVAL(nr_dirty_background_threshold)
htVAL(nr_dirty_threshold)
htVAL(nr_file_hugepages)
htVAL(nr_file_pages)
htVAL(nr_file_pmdmapped)
htVAL(nr_foll_pin_acquired)
htVAL(nr_foll_pin_released)
htVAL(nr_free_cma)
htVAL(nr_free_pages)
htVAL(nr_inactive_anon)
htVAL(nr_inactive_file)
htVAL(nr_isolated_anon)
htVAL(nr_isolated_file)
htVAL(nr_kernel_misc_reclaimable)
htVAL(nr_kernel_stack)
htVAL(nr_mapped)
htVAL(nr_mlock)
htVAL(nr_page_table_pages)
htVAL(nr_shadow_call_stack)
htVAL(nr_shmem)
htVAL(nr_shmem_hugepages)
htVAL(nr_shmem_pmdmapped)
htVAL(nr_slab_reclaimable)
htVAL(nr_slab_unreclaimable)
htVAL(nr_unevictable)
htVAL(nr_unstable)
htVAL(nr_vmscan_immediate_reclaim)
htVAL(nr_vmscan_write)
htVAL(nr_writeback)
htVAL(nr_writeback_temp)
htVAL(nr_written)
htVAL(nr_zone_active_anon)
htVAL(nr_zone_active_file)
htVAL(nr_zone_inactive_anon)
htVAL(nr_zone_inactive_file)
htVAL(nr_zone_unevictable)
htVAL(nr_zone_write_pending)
htVAL(nr_zspages)
htVAL(numa_foreign)
htVAL(numa_hint_faults)
htVAL(numa_hint_faults_local)
htVAL(numa_hit)
htVAL(numa_huge_pte_updates)
htVAL(numa_interleave)
htVAL(numa_local)
htVAL(numa_miss)
htVAL(numa_other)
htVAL(numa_pages_migrated)
htVAL(numa_pte_updates)
htVAL(oom_kill)
htVAL(pageoutrun)
htVAL(pgactivate)
htVAL(pgalloc_dma)
htVAL(pgalloc_dma32)
htVAL(pgalloc_high)
htVAL(pgalloc_movable)
htVAL(pgalloc_normal)
htVAL(pgdeactivate)
htVAL(pgfault)
htVAL(pgfree)
htVAL(pginodesteal)
htVAL(pglazyfree)
htVAL(pglazyfreed)
htVAL(pgmajfault)
htVAL(pgmigrate_fail)
htVAL(pgmigrate_success)
htVAL(pgpgin)
htVAL(pgpgout)
htVAL(pgrefill)
htVAL(pgrotated)
htVAL(pgscan_anon)
htVAL(pgscan_direct)
htVAL(pgscan_direct_throttle)
htVAL(pgscan_file)
htVAL(pgscan_kswapd)
htVAL(pgskip_dma)
htVAL(pgskip_dma32)
htVAL(pgskip_high)
htVAL(pgskip_movable)
htVAL(pgskip_normal)
htVAL(pgsteal_anon)
htVAL(pgsteal_direct)
htVAL(pgsteal_file)
htVAL(pgsteal_kswapd)
htVAL(pswpin)
htVAL(pswpout)
htVAL(slabs_scanned)
htVAL(swap_ra)
htVAL(swap_ra_hit)
htVAL(thp_collapse_alloc)
htVAL(thp_collapse_alloc_failed)
htVAL(thp_deferred_split_page)
htVAL(thp_fault_alloc)
htVAL(thp_fault_fallback)
htVAL(thp_fault_fallback_charge)
htVAL(thp_file_alloc)
htVAL(thp_file_fallback)
htVAL(thp_file_fallback_charge)
htVAL(thp_file_mapped)
htVAL(thp_split_page)
htVAL(thp_split_page_failed)
htVAL(thp_split_pmd)
htVAL(thp_split_pud)
htVAL(thp_swpout)
htVAL(thp_swpout_fallback)
htVAL(thp_zero_page_alloc)
htVAL(thp_zero_page_alloc_failed)
htVAL(unevictable_pgs_cleared)
htVAL(unevictable_pgs_culled)
htVAL(unevictable_pgs_mlocked)
htVAL(unevictable_pgs_munlocked)
htVAL(unevictable_pgs_rescued)
htVAL(unevictable_pgs_scanned)
htVAL(unevictable_pgs_stranded)
htVAL(workingset_activate)
htVAL(workingset_nodereclaim)
htVAL(workingset_nodes)
htVAL(workingset_refault)
htVAL(workingset_restore)
htVAL(zone_reclaim_failed)
return 0;
#undef htVAL
} // end: vmstat_make_hash_failed
/*
* vmstat_read_failed():
*
* Read the data out of /proc/vmstat putting the information
* into the supplied info structure
*/
static int vmstat_read_failed (
struct vmstat_info *info)
{
char buf[VMSTAT_BUFF];
char *head, *tail;
int size;
unsigned long *valptr;
// remember history from last time around
memcpy(&info->hist.old, &info->hist.new, sizeof(struct vmstat_data));
// clear out the soon to be 'current' values
memset(&info->hist.new, 0, sizeof(struct vmstat_data));
#ifndef __CYGWIN__ /* /proc/vmstat does not exist */
if (-1 == info->vmstat_fd
&& (-1 == (info->vmstat_fd = open(VMSTAT_FILE, O_RDONLY))))
return 1;
if (lseek(info->vmstat_fd, 0L, SEEK_SET) == -1)
return 1;
for (;;) {
if ((size = read(info->vmstat_fd, buf, sizeof(buf)-1)) < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
return 1;
}
break;
}
if (size == 0) {
errno = EIO;
return 1;
}
buf[size] = '\0';
head = buf;
for (;;) {
static __thread ENTRY e; // keep coverity off our backs (e.data)
ENTRY *ep;
if (!(tail = strchr(head, ' ')))
break;
*tail = '\0';
valptr = NULL;
e.key = head;
if (hsearch_r(e, FIND, &ep, &info->hashtab))
valptr = ep->data;
head = tail + 1;
if (valptr)
*valptr = strtoul(head, NULL, 10);
if (!(tail = strchr(head, '\n')))
break;
head = tail + 1;
}
#endif /* !__CYGWIN__ */
return 0;
} // end: vmstat_read_failed
/*
* vmstat_stacks_alloc():
*
* Allocate and initialize one or more stacks each of which is anchored in an
* associated context structure.
*
* All such stacks will have their result structures properly primed with
* 'items', while the result itself will be zeroed.
*
* Returns a stacks_extent struct anchoring the 'heads' of each new stack.
*/
static struct stacks_extent *vmstat_stacks_alloc (
struct vmstat_info *info,
int maxstacks)
{
struct stacks_extent *p_blob;
struct vmstat_stack **p_vect;
struct vmstat_stack *p_head;
size_t vect_size, head_size, list_size, blob_size;
void *v_head, *v_list;
int i;
vect_size = sizeof(void *) * maxstacks; // size of the addr vectors |
vect_size += sizeof(void *); // plus NULL addr delimiter |
head_size = sizeof(struct vmstat_stack); // size of that head struct |
list_size = sizeof(struct vmstat_result)*info->numitems; // any single results stack |
blob_size = sizeof(struct stacks_extent); // the extent anchor itself |
blob_size += vect_size; // plus room for addr vects |
blob_size += head_size * maxstacks; // plus room for head thing |
blob_size += list_size * maxstacks; // plus room for our stacks |
/* note: all of our memory is allocated in a single blob, facilitating a later free(). |
as a minimum, it is important that the result structures themselves always be |
contiguous for every stack since they are accessed through relative position. | */
if (NULL == (p_blob = calloc(1, blob_size)))
return NULL;
p_blob->next = info->extents; // push this extent onto... |
info->extents = p_blob; // ...some existing extents |
p_vect = (void *)p_blob + sizeof(struct stacks_extent); // prime our vector pointer |
p_blob->stacks = p_vect; // set actual vectors start |
v_head = (void *)p_vect + vect_size; // prime head pointer start |
v_list = v_head + (head_size * maxstacks); // prime our stacks pointer |
for (i = 0; i < maxstacks; i++) {
p_head = (struct vmstat_stack *)v_head;
p_head->head = vmstat_itemize_stack((struct vmstat_result *)v_list, info->numitems, info->items);
p_blob->stacks[i] = p_head;
v_list += list_size;
v_head += head_size;
}
p_blob->ext_numstacks = maxstacks;
return p_blob;
} // end: vmstat_stacks_alloc
// ___ Public Functions |||||||||||||||||||||||||||||||||||||||||||||||||||||||
// --- standard required functions --------------------------------------------
/*
* procps_vmstat_new:
*
* Create a new container to hold the stat information
*
* The initial refcount is 1, and needs to be decremented
* to release the resources of the structure.
*
* Returns: < 0 on failure, 0 on success along with
* a pointer to a new context struct
*/
PROCPS_EXPORT int procps_vmstat_new (
struct vmstat_info **info)
{
struct vmstat_info *p;
#ifdef ITEMTABLE_DEBUG
int i, failed = 0;
for (i = 0; i < MAXTABLE(Item_table); i++) {
if (i != Item_table[i].enumnumb) {
fprintf(stderr, "%s: enum/table error: Item_table[%d] was %s, but its value is %d\n"
, __FILE__, i, Item_table[i].enum2str, Item_table[i].enumnumb);
failed = 1;
}
}
if (failed) _Exit(EXIT_FAILURE);
#endif
if (info == NULL || *info != NULL)
return -EINVAL;
if (!(p = calloc(1, sizeof(struct vmstat_info))))
return -ENOMEM;
p->refcount = 1;
p->vmstat_fd = -1;
if (vmstat_make_hash_failed(p)) {
free(p);
return -errno;
}
/* do a priming read here for the following potential benefits: |
1) ensure there will be no problems with subsequent access |
2) make delta results potentially useful, even if 1st time |
3) elimnate need for history distortions 1st time 'switch' | */
if (vmstat_read_failed(p)) {
procps_vmstat_unref(&p);
return -errno;
}
*info = p;
return 0;
} // end: procps_vmstat_new
PROCPS_EXPORT int procps_vmstat_ref (
struct vmstat_info *info)
{
if (info == NULL)
return -EINVAL;
info->refcount++;
return info->refcount;
} // end: procps_vmstat_ref
PROCPS_EXPORT int procps_vmstat_unref (
struct vmstat_info **info)
{
if (info == NULL || *info == NULL)
return -EINVAL;
(*info)->refcount--;
if ((*info)->refcount < 1) {
int errno_sav = errno;
if ((*info)->extents)
vmstat_extents_free_all((*info));
if ((*info)->items)
free((*info)->items);
hdestroy_r(&(*info)->hashtab);
free(*info);
*info = NULL;
errno = errno_sav;
return 0;
}
return (*info)->refcount;
} // end: procps_vmstat_unref
// --- variable interface functions -------------------------------------------
PROCPS_EXPORT struct vmstat_result *procps_vmstat_get (
struct vmstat_info *info,
enum vmstat_item item)
{
time_t cur_secs;
errno = EINVAL;
if (info == NULL)
return NULL;
if (item < 0 || item >= VMSTAT_logical_end)
return NULL;
errno = 0;
/* we will NOT read the vmstat file with every call - rather, we'll offer
a granularity of 1 second between reads ... */
cur_secs = time(NULL);
if (1 <= cur_secs - info->sav_secs) {
if (vmstat_read_failed(info))
return NULL;
info->sav_secs = cur_secs;
}
info->get_this.item = item;
// with 'get', we must NOT honor the usual 'noop' guarantee
info->get_this.result.ul_int = 0;
Item_table[item].setsfunc(&info->get_this, &info->hist);
return &info->get_this;
} // end: procps_vmstat_get
/* procps_vmstat_select():
*
* Harvest all the requested /proc/vmstat information then return
* it in a results stack.
*
* Returns: pointer to a vmstat_stack struct on success, NULL on error.
*/
PROCPS_EXPORT struct vmstat_stack *procps_vmstat_select (
struct vmstat_info *info,
enum vmstat_item *items,
int numitems)
{
errno = EINVAL;
if (info == NULL || items == NULL)
return NULL;
if (vmstat_items_check_failed(numitems, items))
return NULL;
errno = 0;
/* is this the first time or have things changed since we were last called?
if so, gotta' redo all of our stacks stuff ... */
if (info->numitems != numitems + 1
|| memcmp(info->items, items, sizeof(enum vmstat_item) * numitems)) {
// allow for our VMSTAT_logical_end
if (!(info->items = realloc(info->items, sizeof(enum vmstat_item) * (numitems + 1))))
return NULL;
memcpy(info->items, items, sizeof(enum vmstat_item) * numitems);
info->items[numitems] = VMSTAT_logical_end;
info->numitems = numitems + 1;
if (info->extents)
vmstat_extents_free_all(info);
}
if (!info->extents
&& (!vmstat_stacks_alloc(info, 1)))
return NULL;
if (vmstat_read_failed(info))
return NULL;
vmstat_assign_results(info->extents->stacks[0], &info->hist);
return info->extents->stacks[0];
} // end: procps_vmstat_select
// --- special debugging function(s) ------------------------------------------
/*
* The following isn't part of the normal programming interface. Rather,
* it exists to validate result types referenced in application programs.
*
* It's used only when:
* 1) the 'XTRA_PROCPS_DEBUG' has been defined, or
* 2) an #include of 'xtra-procps-debug.h' is used
*/
PROCPS_EXPORT struct vmstat_result *xtra_vmstat_get (
struct vmstat_info *info,
enum vmstat_item actual_enum,
const char *typestr,
const char *file,
int lineno)
{
struct vmstat_result *r = procps_vmstat_get(info, actual_enum);
if (actual_enum < 0 || actual_enum >= VMSTAT_logical_end) {
fprintf(stderr, "%s line %d: invalid item = %d, type = %s\n"
, file, lineno, actual_enum, typestr);
}
if (r) {
char *str = Item_table[r->item].type2str;
if (str[0]
&& (strcmp(typestr, str)))
fprintf(stderr, "%s line %d: was %s, expected %s\n", file, lineno, typestr, str);
}
return r;
} // end: xtra_vmstat_get_
PROCPS_EXPORT struct vmstat_result *xtra_vmstat_val (
int relative_enum,
const char *typestr,
const struct vmstat_stack *stack,
struct vmstat_info *info,
const char *file,
int lineno)
{
char *str;
int i;
for (i = 0; stack->head[i].item < VMSTAT_logical_end; i++)
;
if (relative_enum < 0 || relative_enum >= i) {
fprintf(stderr, "%s line %d: invalid relative_enum = %d, valid range = 0-%d\n"
, file, lineno, relative_enum, i-1);
return NULL;
}
str = Item_table[stack->head[relative_enum].item].type2str;
if (str[0]
&& (strcmp(typestr, str))) {
fprintf(stderr, "%s line %d: was %s, expected %s\n", file, lineno, typestr, str);
}
return &stack->head[relative_enum];
(void)info;
} // end: xtra_vmstat_val
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