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mariadb/storage/bdb/mp/mp_stat.c
jimw@mysql.com af88d67a19 Import BDB 4.4.16
2005-12-05 10:27:46 -08:00

755 lines
22 KiB
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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996-2005
* Sleepycat Software. All rights reserved.
*
* $Id: mp_stat.c,v 12.10 2005/10/27 01:26:00 mjc Exp $
*/
#include "db_config.h"
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#endif
#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/db_shash.h"
#include "dbinc/db_am.h"
#include "dbinc/log.h"
#include "dbinc/mp.h"
#ifdef HAVE_STATISTICS
static void __memp_print_bh
__P((DB_ENV *, DB_MPOOL *, BH *, roff_t *, u_int32_t));
static int __memp_print_all __P((DB_ENV *, u_int32_t));
static int __memp_print_stats __P((DB_ENV *, u_int32_t));
static int __memp_print_hash __P((DB_ENV *,
DB_MPOOL *, REGINFO *, roff_t *, u_int32_t));
static int __memp_stat __P((DB_ENV *,
DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, u_int32_t));
static void __memp_stat_wait __P((
DB_ENV *, REGINFO *, MPOOL *, DB_MPOOL_STAT *, u_int32_t));
/*
* __memp_stat_pp --
* DB_ENV->memp_stat pre/post processing.
*
* PUBLIC: int __memp_stat_pp
* PUBLIC: __P((DB_ENV *, DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, u_int32_t));
*/
int
__memp_stat_pp(dbenv, gspp, fspp, flags)
DB_ENV *dbenv;
DB_MPOOL_STAT **gspp;
DB_MPOOL_FSTAT ***fspp;
u_int32_t flags;
{
DB_THREAD_INFO *ip;
int ret;
PANIC_CHECK(dbenv);
ENV_REQUIRES_CONFIG(dbenv,
dbenv->mp_handle, "DB_ENV->memp_stat", DB_INIT_MPOOL);
if ((ret = __db_fchk(dbenv,
"DB_ENV->memp_stat", flags, DB_STAT_CLEAR)) != 0)
return (ret);
ENV_ENTER(dbenv, ip);
REPLICATION_WRAP(dbenv, (__memp_stat(dbenv, gspp, fspp, flags)), ret);
ENV_LEAVE(dbenv, ip);
return (ret);
}
/*
* __memp_stat --
* DB_ENV->memp_stat
*/
static int
__memp_stat(dbenv, gspp, fspp, flags)
DB_ENV *dbenv;
DB_MPOOL_STAT **gspp;
DB_MPOOL_FSTAT ***fspp;
u_int32_t flags;
{
DB_MPOOL *dbmp;
DB_MPOOL_FSTAT **tfsp, *tstruct;
DB_MPOOL_STAT *sp;
MPOOL *c_mp, *mp;
MPOOLFILE *mfp;
size_t len, nlen;
u_int32_t i, pagesize, st_bytes, st_gbytes, st_hash_buckets, st_pages;
u_int32_t tmp_wait, tmp_nowait;
int ret;
char *name, *tname;
dbmp = dbenv->mp_handle;
mp = dbmp->reginfo[0].primary;
/* Global statistics. */
if (gspp != NULL) {
*gspp = NULL;
if ((ret = __os_umalloc(dbenv, sizeof(**gspp), gspp)) != 0)
return (ret);
memset(*gspp, 0, sizeof(**gspp));
sp = *gspp;
/*
* Initialization and information that is not maintained on
* a per-cache basis. Note that configuration information
* may be modified at any time, and so we have to lock.
*/
c_mp = dbmp->reginfo[0].primary;
sp->st_gbytes = c_mp->stat.st_gbytes;
sp->st_bytes = c_mp->stat.st_bytes;
sp->st_ncache = dbmp->nreg;
sp->st_regsize = dbmp->reginfo[0].rp->size;
MPOOL_SYSTEM_LOCK(dbenv);
sp->st_mmapsize = mp->mp_mmapsize;
sp->st_maxopenfd = mp->mp_maxopenfd;
sp->st_maxwrite = mp->mp_maxwrite;
sp->st_maxwrite_sleep = mp->mp_maxwrite_sleep;
MPOOL_SYSTEM_UNLOCK(dbenv);
/* Walk the cache list and accumulate the global information. */
for (i = 0; i < mp->nreg; ++i) {
c_mp = dbmp->reginfo[i].primary;
sp->st_map += c_mp->stat.st_map;
sp->st_cache_hit += c_mp->stat.st_cache_hit;
sp->st_cache_miss += c_mp->stat.st_cache_miss;
sp->st_page_create += c_mp->stat.st_page_create;
sp->st_page_in += c_mp->stat.st_page_in;
sp->st_page_out += c_mp->stat.st_page_out;
sp->st_ro_evict += c_mp->stat.st_ro_evict;
sp->st_rw_evict += c_mp->stat.st_rw_evict;
sp->st_page_trickle += c_mp->stat.st_page_trickle;
sp->st_pages += c_mp->stat.st_pages;
/*
* st_page_dirty calculated by __memp_stat_hash
* st_page_clean calculated here
*/
__memp_stat_hash(
&dbmp->reginfo[i], c_mp, &sp->st_page_dirty);
sp->st_page_clean = sp->st_pages - sp->st_page_dirty;
sp->st_hash_buckets += c_mp->stat.st_hash_buckets;
sp->st_hash_searches += c_mp->stat.st_hash_searches;
sp->st_hash_longest += c_mp->stat.st_hash_longest;
sp->st_hash_examined += c_mp->stat.st_hash_examined;
/*
* st_hash_nowait calculated by __memp_stat_wait
* st_hash_wait
*/
__memp_stat_wait(
dbenv, &dbmp->reginfo[i], c_mp, sp, flags);
__mutex_set_wait_info(dbenv,
c_mp->mtx_region, &tmp_wait, &tmp_nowait);
sp->st_region_nowait += tmp_nowait;
sp->st_region_wait += tmp_wait;
sp->st_alloc += c_mp->stat.st_alloc;
sp->st_alloc_buckets += c_mp->stat.st_alloc_buckets;
if (sp->st_alloc_max_buckets <
c_mp->stat.st_alloc_max_buckets)
sp->st_alloc_max_buckets =
c_mp->stat.st_alloc_max_buckets;
sp->st_alloc_pages += c_mp->stat.st_alloc_pages;
if (sp->st_alloc_max_pages <
c_mp->stat.st_alloc_max_pages)
sp->st_alloc_max_pages =
c_mp->stat.st_alloc_max_pages;
if (LF_ISSET(DB_STAT_CLEAR)) {
__mutex_clear(dbenv, c_mp->mtx_region);
MPOOL_SYSTEM_LOCK(dbenv);
st_bytes = c_mp->stat.st_bytes;
st_gbytes = c_mp->stat.st_gbytes;
st_hash_buckets = c_mp->stat.st_hash_buckets;
st_pages = c_mp->stat.st_pages;
memset(&c_mp->stat, 0, sizeof(c_mp->stat));
c_mp->stat.st_bytes = st_bytes;
c_mp->stat.st_gbytes = st_gbytes;
c_mp->stat.st_hash_buckets = st_hash_buckets;
c_mp->stat.st_pages = st_pages;
MPOOL_SYSTEM_UNLOCK(dbenv);
}
}
/*
* We have duplicate statistics fields in per-file structures
* and the cache. The counters are only incremented in the
* per-file structures, except if a file is flushed from the
* mpool, at which time we copy its information into the cache
* statistics. We added the cache information above, now we
* add the per-file information.
*/
MPOOL_SYSTEM_LOCK(dbenv);
for (mfp = SH_TAILQ_FIRST(&mp->mpfq, __mpoolfile);
mfp != NULL; mfp = SH_TAILQ_NEXT(mfp, q, __mpoolfile)) {
sp->st_map += mfp->stat.st_map;
sp->st_cache_hit += mfp->stat.st_cache_hit;
sp->st_cache_miss += mfp->stat.st_cache_miss;
sp->st_page_create += mfp->stat.st_page_create;
sp->st_page_in += mfp->stat.st_page_in;
sp->st_page_out += mfp->stat.st_page_out;
if (fspp == NULL && LF_ISSET(DB_STAT_CLEAR)) {
pagesize = mfp->stat.st_pagesize;
memset(&mfp->stat, 0, sizeof(mfp->stat));
mfp->stat.st_pagesize = pagesize;
}
}
MPOOL_SYSTEM_UNLOCK(dbenv);
}
/* Per-file statistics. */
if (fspp != NULL) {
*fspp = NULL;
/* Count the MPOOLFILE structures. */
MPOOL_SYSTEM_LOCK(dbenv);
for (i = 0, len = 0,
mfp = SH_TAILQ_FIRST(&mp->mpfq, __mpoolfile);
mfp != NULL;
++i, mfp = SH_TAILQ_NEXT(mfp, q, __mpoolfile))
len += sizeof(DB_MPOOL_FSTAT *) +
sizeof(DB_MPOOL_FSTAT) +
strlen(__memp_fns(dbmp, mfp)) + 1;
len += sizeof(DB_MPOOL_FSTAT *); /* Trailing NULL */
MPOOL_SYSTEM_UNLOCK(dbenv);
if (i == 0)
return (0);
/* Allocate space */
if ((ret = __os_umalloc(dbenv, len, fspp)) != 0)
return (ret);
/*
* Build each individual entry. We assume that an array of
* pointers are aligned correctly to be followed by an array
* of structures, which should be safe (in this particular
* case, the first element of the structure is a pointer, so
* we're doubly safe). The array is followed by space for
* the text file names.
*
* Add 1 to i because we need to skip over the NULL.
*/
tfsp = *fspp;
tstruct = (DB_MPOOL_FSTAT *)(tfsp + i + 1);
tname = (char *)(tstruct + i);
/*
* Files may have been opened since we counted, don't walk
* off the end of the allocated space.
*/
MPOOL_SYSTEM_LOCK(dbenv);
for (mfp = SH_TAILQ_FIRST(&mp->mpfq, __mpoolfile);
mfp != NULL && i-- > 0;
++tfsp, ++tstruct, tname += nlen,
mfp = SH_TAILQ_NEXT(mfp, q, __mpoolfile)) {
name = __memp_fns(dbmp, mfp);
nlen = strlen(name) + 1;
*tfsp = tstruct;
*tstruct = mfp->stat;
if (LF_ISSET(DB_STAT_CLEAR)) {
pagesize = mfp->stat.st_pagesize;
memset(&mfp->stat, 0, sizeof(mfp->stat));
mfp->stat.st_pagesize = pagesize;
}
tstruct->file_name = tname;
memcpy(tname, name, nlen);
}
MPOOL_SYSTEM_UNLOCK(dbenv);
*tfsp = NULL;
}
return (0);
}
/*
* __memp_stat_print_pp --
* DB_ENV->memp_stat_print pre/post processing.
*
* PUBLIC: int __memp_stat_print_pp __P((DB_ENV *, u_int32_t));
*/
int
__memp_stat_print_pp(dbenv, flags)
DB_ENV *dbenv;
u_int32_t flags;
{
DB_THREAD_INFO *ip;
int ret;
PANIC_CHECK(dbenv);
ENV_REQUIRES_CONFIG(dbenv,
dbenv->mp_handle, "DB_ENV->memp_stat_print", DB_INIT_MPOOL);
#define DB_STAT_MEMP_FLAGS \
(DB_STAT_ALL | DB_STAT_CLEAR | DB_STAT_MEMP_HASH)
if ((ret = __db_fchk(dbenv,
"DB_ENV->memp_stat_print", flags, DB_STAT_MEMP_FLAGS)) != 0)
return (ret);
ENV_ENTER(dbenv, ip);
REPLICATION_WRAP(dbenv, (__memp_stat_print(dbenv, flags)), ret);
ENV_LEAVE(dbenv, ip);
return (ret);
}
#define FMAP_ENTRIES 200 /* Files we map. */
/*
* __memp_stat_print --
* DB_ENV->memp_stat_print method.
*
* PUBLIC: int __memp_stat_print __P((DB_ENV *, u_int32_t));
*/
int
__memp_stat_print(dbenv, flags)
DB_ENV *dbenv;
u_int32_t flags;
{
u_int32_t orig_flags;
int ret;
orig_flags = flags;
LF_CLR(DB_STAT_CLEAR);
if (flags == 0 || LF_ISSET(DB_STAT_ALL)) {
ret = __memp_print_stats(dbenv, orig_flags);
if (flags == 0 || ret != 0)
return (ret);
}
if (LF_ISSET(DB_STAT_ALL | DB_STAT_MEMP_HASH) &&
(ret = __memp_print_all(dbenv, orig_flags)) != 0)
return (ret);
return (0);
}
/*
* __memp_print_stats --
* Display default mpool region statistics.
*/
static int
__memp_print_stats(dbenv, flags)
DB_ENV *dbenv;
u_int32_t flags;
{
DB_MPOOL_FSTAT **fsp, **tfsp;
DB_MPOOL_STAT *gsp;
int ret;
if ((ret = __memp_stat(dbenv, &gsp, &fsp, flags)) != 0)
return (ret);
if (LF_ISSET(DB_STAT_ALL))
__db_msg(dbenv, "Default cache region information:");
__db_dlbytes(dbenv, "Total cache size",
(u_long)gsp->st_gbytes, (u_long)0, (u_long)gsp->st_bytes);
__db_dl(dbenv, "Number of caches", (u_long)gsp->st_ncache);
__db_dlbytes(dbenv, "Pool individual cache size",
(u_long)0, (u_long)0, (u_long)gsp->st_regsize);
__db_dlbytes(dbenv, "Maximum memory-mapped file size",
(u_long)0, (u_long)0, (u_long)gsp->st_mmapsize);
STAT_LONG("Maximum open file descriptors", gsp->st_maxopenfd);
STAT_LONG("Maximum sequential buffer writes", gsp->st_maxwrite);
STAT_LONG("Sleep after writing maximum sequential buffers",
gsp->st_maxwrite_sleep);
__db_dl(dbenv,
"Requested pages mapped into the process' address space",
(u_long)gsp->st_map);
__db_dl_pct(dbenv, "Requested pages found in the cache",
(u_long)gsp->st_cache_hit, DB_PCT(
gsp->st_cache_hit, gsp->st_cache_hit + gsp->st_cache_miss), NULL);
__db_dl(dbenv, "Requested pages not found in the cache",
(u_long)gsp->st_cache_miss);
__db_dl(dbenv,
"Pages created in the cache", (u_long)gsp->st_page_create);
__db_dl(dbenv, "Pages read into the cache", (u_long)gsp->st_page_in);
__db_dl(dbenv, "Pages written from the cache to the backing file",
(u_long)gsp->st_page_out);
__db_dl(dbenv, "Clean pages forced from the cache",
(u_long)gsp->st_ro_evict);
__db_dl(dbenv, "Dirty pages forced from the cache",
(u_long)gsp->st_rw_evict);
__db_dl(dbenv, "Dirty pages written by trickle-sync thread",
(u_long)gsp->st_page_trickle);
__db_dl(dbenv, "Current total page count",
(u_long)gsp->st_pages);
__db_dl(dbenv, "Current clean page count",
(u_long)gsp->st_page_clean);
__db_dl(dbenv, "Current dirty page count",
(u_long)gsp->st_page_dirty);
__db_dl(dbenv, "Number of hash buckets used for page location",
(u_long)gsp->st_hash_buckets);
__db_dl(dbenv,
"Total number of times hash chains searched for a page",
(u_long)gsp->st_hash_searches);
__db_dl(dbenv, "The longest hash chain searched for a page",
(u_long)gsp->st_hash_longest);
__db_dl(dbenv,
"Total number of hash chain entries checked for page",
(u_long)gsp->st_hash_examined);
__db_dl_pct(dbenv,
"The number of hash bucket locks that required waiting",
(u_long)gsp->st_hash_wait, DB_PCT(
gsp->st_hash_wait, gsp->st_hash_wait + gsp->st_hash_nowait), NULL);
__db_dl(dbenv,
"The maximum number of times any hash bucket lock was waited for",
(u_long)gsp->st_hash_max_wait);
__db_dl_pct(dbenv,
"The number of region locks that required waiting",
(u_long)gsp->st_region_wait, DB_PCT(gsp->st_region_wait,
gsp->st_region_wait + gsp->st_region_nowait), NULL);
__db_dl(dbenv, "The number of page allocations", (u_long)gsp->st_alloc);
__db_dl(dbenv,
"The number of hash buckets examined during allocations",
(u_long)gsp->st_alloc_buckets);
__db_dl(dbenv,
"The maximum number of hash buckets examined for an allocation",
(u_long)gsp->st_alloc_max_buckets);
__db_dl(dbenv, "The number of pages examined during allocations",
(u_long)gsp->st_alloc_pages);
__db_dl(dbenv, "The max number of pages examined for an allocation",
(u_long)gsp->st_alloc_max_pages);
for (tfsp = fsp; fsp != NULL && *tfsp != NULL; ++tfsp) {
if (LF_ISSET(DB_STAT_ALL))
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "Pool File: %s", (*tfsp)->file_name);
__db_dl(dbenv, "Page size", (u_long)(*tfsp)->st_pagesize);
__db_dl(dbenv,
"Requested pages mapped into the process' address space",
(u_long)(*tfsp)->st_map);
__db_dl_pct(dbenv, "Requested pages found in the cache",
(u_long)(*tfsp)->st_cache_hit, DB_PCT((*tfsp)->st_cache_hit,
(*tfsp)->st_cache_hit + (*tfsp)->st_cache_miss), NULL);
__db_dl(dbenv, "Requested pages not found in the cache",
(u_long)(*tfsp)->st_cache_miss);
__db_dl(dbenv, "Pages created in the cache",
(u_long)(*tfsp)->st_page_create);
__db_dl(dbenv, "Pages read into the cache",
(u_long)(*tfsp)->st_page_in);
__db_dl(dbenv,
"Pages written from the cache to the backing file",
(u_long)(*tfsp)->st_page_out);
}
__os_ufree(dbenv, fsp);
__os_ufree(dbenv, gsp);
return (0);
}
/*
* __memp_print_all --
* Display debugging mpool region statistics.
*/
static int
__memp_print_all(dbenv, flags)
DB_ENV *dbenv;
u_int32_t flags;
{
static const FN fn[] = {
{ MP_CAN_MMAP, "MP_CAN_MMAP" },
{ MP_DIRECT, "MP_DIRECT" },
{ MP_EXTENT, "MP_EXTENT" },
{ MP_FAKE_DEADFILE, "deadfile" },
{ MP_FAKE_FILEWRITTEN, "file written" },
{ MP_FAKE_NB, "no backing file" },
{ MP_FAKE_UOC, "unlink on close" },
{ MP_NOT_DURABLE, "not durable" },
{ MP_TEMP, "MP_TEMP" },
{ 0, NULL }
};
static const FN cfn[] = {
{ DB_MPOOL_NOFILE, "DB_MPOOL_NOFILE" },
{ DB_MPOOL_UNLINK, "DB_MPOOL_UNLINK" },
{ 0, NULL }
};
DB_MPOOL *dbmp;
DB_MPOOLFILE *dbmfp;
MPOOL *mp;
MPOOLFILE *mfp;
roff_t fmap[FMAP_ENTRIES + 1];
u_int32_t i, mfp_flags;
int cnt, ret;
dbmp = dbenv->mp_handle;
mp = dbmp->reginfo[0].primary;
ret = 0;
MPOOL_SYSTEM_LOCK(dbenv);
__db_print_reginfo(dbenv, dbmp->reginfo, "Mpool");
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "MPOOL structure:");
__mutex_print_debug_single(
dbenv, "MPOOL region mutex", mp->mtx_region, flags);
STAT_LSN("Maximum checkpoint LSN", &mp->lsn);
STAT_ULONG("Hash table entries", mp->htab_buckets);
STAT_ULONG("Hash table last-checked", mp->last_checked);
STAT_ULONG("Hash table LRU count", mp->lru_count);
STAT_ULONG("Put counter", mp->put_counter);
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "DB_MPOOL handle information:");
__mutex_print_debug_single(
dbenv, "DB_MPOOL handle mutex", dbmp->mutex, flags);
STAT_ULONG("Underlying cache regions", dbmp->nreg);
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "DB_MPOOLFILE structures:");
for (cnt = 0, dbmfp = TAILQ_FIRST(&dbmp->dbmfq);
dbmfp != NULL; dbmfp = TAILQ_NEXT(dbmfp, q), ++cnt) {
__db_msg(dbenv, "File #%d: %s: per-process, %s",
cnt + 1, __memp_fn(dbmfp),
F_ISSET(dbmfp, MP_READONLY) ? "readonly" : "read/write");
STAT_ULONG("Reference count", dbmfp->ref);
STAT_ULONG("Pinned block reference count", dbmfp->ref);
STAT_ULONG("Clear length", dbmfp->clear_len);
__db_print_fileid(dbenv, dbmfp->fileid, "\tID");
STAT_ULONG("File type", dbmfp->ftype);
STAT_ULONG("LSN offset", dbmfp->lsn_offset);
STAT_ULONG("Max gbytes", dbmfp->gbytes);
STAT_ULONG("Max bytes", dbmfp->bytes);
STAT_ULONG("Cache priority", dbmfp->priority);
STAT_POINTER("mmap address", dbmfp->addr);
STAT_ULONG("mmap length", dbmfp->len);
__db_prflags(dbenv, NULL, dbmfp->flags, cfn, NULL, "\tFlags");
__db_print_fh(dbenv, "File handle", dbmfp->fhp, flags);
}
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "MPOOLFILE structures:");
for (cnt = 0, mfp = SH_TAILQ_FIRST(&mp->mpfq, __mpoolfile);
mfp != NULL; mfp = SH_TAILQ_NEXT(mfp, q, __mpoolfile), ++cnt) {
__db_msg(dbenv, "File #%d: %s", cnt + 1, __memp_fns(dbmp, mfp));
__mutex_print_debug_single(dbenv, "Mutex", mfp->mutex, flags);
MUTEX_LOCK(dbenv, mfp->mutex);
STAT_ULONG("Reference count", mfp->mpf_cnt);
STAT_ULONG("Block count", mfp->block_cnt);
STAT_ULONG("Last page number", mfp->last_pgno);
STAT_ULONG("Original last page number", mfp->orig_last_pgno);
STAT_ULONG("Maximum page number", mfp->maxpgno);
STAT_LONG("Type", mfp->ftype);
STAT_LONG("Priority", mfp->priority);
STAT_LONG("Page's LSN offset", mfp->lsn_off);
STAT_LONG("Page's clear length", mfp->clear_len);
__db_print_fileid(dbenv,
R_ADDR(dbmp->reginfo, mfp->fileid_off), "\tID");
mfp_flags = 0;
if (mfp->deadfile)
FLD_SET(mfp_flags, MP_FAKE_DEADFILE);
if (mfp->file_written)
FLD_SET(mfp_flags, MP_FAKE_FILEWRITTEN);
if (mfp->no_backing_file)
FLD_SET(mfp_flags, MP_FAKE_NB);
if (mfp->unlink_on_close)
FLD_SET(mfp_flags, MP_FAKE_UOC);
__db_prflags(dbenv, NULL, mfp_flags, fn, NULL, "\tFlags");
if (cnt < FMAP_ENTRIES)
fmap[cnt] = R_OFFSET(dbmp->reginfo, mfp);
MUTEX_UNLOCK(dbenv, mfp->mutex);
}
MPOOL_SYSTEM_UNLOCK(dbenv);
if (cnt < FMAP_ENTRIES)
fmap[cnt] = INVALID_ROFF;
else
fmap[FMAP_ENTRIES] = INVALID_ROFF;
/* Dump the individual caches. */
for (i = 0; i < mp->nreg; ++i) {
__db_msg(dbenv, "%s", DB_GLOBAL(db_line));
__db_msg(dbenv, "Cache #%d:", i + 1);
if ((ret = __memp_print_hash(
dbenv, dbmp, &dbmp->reginfo[i], fmap, flags)) != 0)
break;
}
return (ret);
}
/*
* __memp_print_hash --
* Display hash bucket statistics for a cache.
*/
static int
__memp_print_hash(dbenv, dbmp, reginfo, fmap, flags)
DB_ENV *dbenv;
DB_MPOOL *dbmp;
REGINFO *reginfo;
roff_t *fmap;
u_int32_t flags;
{
BH *bhp;
DB_MPOOL_HASH *hp;
DB_MSGBUF mb;
MPOOL *c_mp;
u_int32_t bucket;
c_mp = reginfo->primary;
DB_MSGBUF_INIT(&mb);
/* Display the hash table list of BH's. */
__db_msg(dbenv,
"BH hash table (%lu hash slots)", (u_long)c_mp->htab_buckets);
__db_msg(dbenv, "bucket #: priority, [mutex]");
__db_msg(dbenv,
"\tpageno, file, ref, LSN, [mutex], address, priority, flags");
for (hp = R_ADDR(reginfo, c_mp->htab),
bucket = 0; bucket < c_mp->htab_buckets; ++hp, ++bucket) {
MUTEX_LOCK(dbenv, hp->mtx_hash);
if ((bhp = SH_TAILQ_FIRST(&hp->hash_bucket, __bh)) != NULL) {
__db_msgadd(dbenv, &mb, "bucket %lu: %lu, ",
(u_long)bucket, (u_long)hp->hash_priority);
__mutex_print_debug_stats(
dbenv, &mb, hp->mtx_hash, flags);
DB_MSGBUF_FLUSH(dbenv, &mb);
}
for (; bhp != NULL; bhp = SH_TAILQ_NEXT(bhp, hq, __bh))
__memp_print_bh(dbenv, dbmp, bhp, fmap, flags);
MUTEX_UNLOCK(dbenv, hp->mtx_hash);
}
return (0);
}
/*
* __memp_print_bh --
* Display a BH structure.
*/
static void
__memp_print_bh(dbenv, dbmp, bhp, fmap, flags)
DB_ENV *dbenv;
DB_MPOOL *dbmp;
BH *bhp;
roff_t *fmap;
u_int32_t flags;
{
static const FN fn[] = {
{ BH_CALLPGIN, "callpgin" },
{ BH_DIRTY, "dirty" },
{ BH_DIRTY_CREATE, "created" },
{ BH_DISCARD, "discard" },
{ BH_LOCKED, "locked" },
{ BH_TRASH, "trash" },
{ 0, NULL }
};
DB_MSGBUF mb;
int i;
DB_MSGBUF_INIT(&mb);
for (i = 0; i < FMAP_ENTRIES; ++i)
if (fmap[i] == INVALID_ROFF || fmap[i] == bhp->mf_offset)
break;
if (fmap[i] == INVALID_ROFF)
__db_msgadd(dbenv, &mb, "\t%5lu, %lu, ",
(u_long)bhp->pgno, (u_long)bhp->mf_offset);
else
__db_msgadd(
dbenv, &mb, "\t%5lu, #%d, ", (u_long)bhp->pgno, i + 1);
__db_msgadd(dbenv, &mb, "%2lu, %lu/%lu, ", (u_long)bhp->ref,
(u_long)LSN(bhp->buf).file, (u_long)LSN(bhp->buf).offset);
__mutex_print_debug_stats(dbenv, &mb, bhp->mtx_bh, flags);
__db_msgadd(dbenv, &mb, ", %#08lx, %lu",
(u_long)R_OFFSET(dbmp->reginfo, bhp), (u_long)bhp->priority);
__db_prflags(dbenv, &mb, bhp->flags, fn, " (", ")");
DB_MSGBUF_FLUSH(dbenv, &mb);
}
/*
* __memp_stat_wait --
* Total hash bucket wait stats into the region.
*/
static void
__memp_stat_wait(dbenv, reginfo, mp, mstat, flags)
DB_ENV *dbenv;
REGINFO *reginfo;
MPOOL *mp;
DB_MPOOL_STAT *mstat;
u_int32_t flags;
{
DB_MPOOL_HASH *hp;
u_int32_t i, tmp_nowait, tmp_wait;
mstat->st_hash_max_wait = 0;
hp = R_ADDR(reginfo, mp->htab);
for (i = 0; i < mp->htab_buckets; i++, hp++) {
__mutex_set_wait_info(
dbenv, hp->mtx_hash, &tmp_wait, &tmp_nowait);
mstat->st_hash_nowait += tmp_nowait;
mstat->st_hash_wait += tmp_wait;
if (tmp_wait > mstat->st_hash_max_wait)
mstat->st_hash_max_wait = tmp_wait;
if (LF_ISSET(DB_STAT_CLEAR))
__mutex_clear(dbenv, hp->mtx_hash);
}
}
#else /* !HAVE_STATISTICS */
int
__memp_stat_pp(dbenv, gspp, fspp, flags)
DB_ENV *dbenv;
DB_MPOOL_STAT **gspp;
DB_MPOOL_FSTAT ***fspp;
u_int32_t flags;
{
COMPQUIET(gspp, NULL);
COMPQUIET(fspp, NULL);
COMPQUIET(flags, 0);
return (__db_stat_not_built(dbenv));
}
int
__memp_stat_print_pp(dbenv, flags)
DB_ENV *dbenv;
u_int32_t flags;
{
COMPQUIET(flags, 0);
return (__db_stat_not_built(dbenv));
}
#endif
/*
* __memp_stat_hash --
* Total hash bucket stats (other than mutex wait) into the region.
*
* PUBLIC: void __memp_stat_hash __P((REGINFO *, MPOOL *, u_int32_t *));
*/
void
__memp_stat_hash(reginfo, mp, dirtyp)
REGINFO *reginfo;
MPOOL *mp;
u_int32_t *dirtyp;
{
DB_MPOOL_HASH *hp;
u_int32_t dirty, i;
hp = R_ADDR(reginfo, mp->htab);
for (i = 0, dirty = 0; i < mp->htab_buckets; i++, hp++)
dirty += hp->hash_page_dirty;
*dirtyp = dirty;
}
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