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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997, 1998, 1999, 2000
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: lock_stat.c,v 11.4 2000/12/08 20:15:31 ubell Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <ctype.h>
#endif
#ifdef HAVE_RPC
#include "db_server.h"
#endif
#include "db_int.h"
#include "db_shash.h"
#include "lock.h"
#ifdef HAVE_RPC
#include "gen_client_ext.h"
#include "rpc_client_ext.h"
#endif
static void __lock_dump_locker __P((DB_LOCKTAB *, DB_LOCKER *, FILE *));
static void __lock_dump_object __P((DB_LOCKTAB *, DB_LOCKOBJ *, FILE *));
static const char *
__lock_dump_status __P((db_status_t));
/*
* lock_stat --
* Return LOCK statistics.
*/
int
lock_stat(dbenv, statp, db_malloc)
DB_ENV *dbenv;
DB_LOCK_STAT **statp;
void *(*db_malloc) __P((size_t));
{
DB_LOCKREGION *region;
DB_LOCKTAB *lt;
DB_LOCK_STAT *stats;
int ret;
#ifdef HAVE_RPC
if (F_ISSET(dbenv, DB_ENV_RPCCLIENT))
return (__dbcl_lock_stat(dbenv, statp, db_malloc));
#endif
PANIC_CHECK(dbenv);
ENV_REQUIRES_CONFIG(dbenv, dbenv->lk_handle, DB_INIT_LOCK);
*statp = NULL;
lt = dbenv->lk_handle;
if ((ret = __os_malloc(dbenv, sizeof(*stats), db_malloc, &stats)) != 0)
return (ret);
/* Copy out the global statistics. */
R_LOCK(dbenv, <->reginfo);
region = lt->reginfo.primary;
stats->st_lastid = region->id;
stats->st_maxlocks = region->maxlocks;
stats->st_maxlockers = region->maxlockers;
stats->st_maxobjects = region->maxobjects;
stats->st_nmodes = region->nmodes;
stats->st_nlockers = region->nlockers;
stats->st_maxnlockers = region->maxnlockers;
stats->st_nobjects = region->nobjects;
stats->st_maxnobjects = region->maxnobjects;
stats->st_nlocks = region->nlocks;
stats->st_maxnlocks = region->maxnlocks;
stats->st_nconflicts = region->nconflicts;
stats->st_nrequests = region->nrequests;
stats->st_nreleases = region->nreleases;
stats->st_nnowaits = region->nnowaits;
stats->st_ndeadlocks = region->ndeadlocks;
stats->st_region_wait = lt->reginfo.rp->mutex.mutex_set_wait;
stats->st_region_nowait = lt->reginfo.rp->mutex.mutex_set_nowait;
stats->st_regsize = lt->reginfo.rp->size;
R_UNLOCK(dbenv, <->reginfo);
*statp = stats;
return (0);
}
#define LOCK_DUMP_CONF 0x001 /* Conflict matrix. */
#define LOCK_DUMP_FREE 0x002 /* Display lock free list. */
#define LOCK_DUMP_LOCKERS 0x004 /* Display lockers. */
#define LOCK_DUMP_MEM 0x008 /* Display region memory. */
#define LOCK_DUMP_OBJECTS 0x010 /* Display objects. */
#define LOCK_DUMP_ALL 0x01f /* Display all. */
/*
* __lock_dump_region --
*
* PUBLIC: void __lock_dump_region __P((DB_ENV *, char *, FILE *));
*/
void
__lock_dump_region(dbenv, area, fp)
DB_ENV *dbenv;
char *area;
FILE *fp;
{
struct __db_lock *lp;
DB_LOCKER *lip;
DB_LOCKOBJ *op;
DB_LOCKREGION *lrp;
DB_LOCKTAB *lt;
u_int32_t flags, i, j;
int label;
/* Make it easy to call from the debugger. */
if (fp == NULL)
fp = stderr;
for (flags = 0; *area != '\0'; ++area)
switch (*area) {
case 'A':
LF_SET(LOCK_DUMP_ALL);
break;
case 'c':
LF_SET(LOCK_DUMP_CONF);
break;
case 'f':
LF_SET(LOCK_DUMP_FREE);
break;
case 'l':
LF_SET(LOCK_DUMP_LOCKERS);
break;
case 'm':
LF_SET(LOCK_DUMP_MEM);
break;
case 'o':
LF_SET(LOCK_DUMP_OBJECTS);
break;
}
lt = dbenv->lk_handle;
lrp = lt->reginfo.primary;
LOCKREGION(dbenv, lt);
fprintf(fp, "%s\nLock region parameters\n", DB_LINE);
fprintf(fp, "%s: %lu, %s: %lu, %s: %lu, %s: %lu, %s: %lu, %s: %lu, %s: %lu\n",
"locker table size", (u_long)lrp->locker_t_size,
"object table size", (u_long)lrp->object_t_size,
"obj_off", (u_long)lrp->obj_off,
"osynch_off", (u_long)lrp->osynch_off,
"locker_off", (u_long)lrp->locker_off,
"lsynch_off", (u_long)lrp->lsynch_off,
"need_dd", (u_long)lrp->need_dd);
if (LF_ISSET(LOCK_DUMP_CONF)) {
fprintf(fp, "\n%s\nConflict matrix\n", DB_LINE);
for (i = 0; i < lrp->nmodes; i++) {
for (j = 0; j < lrp->nmodes; j++)
fprintf(fp, "%lu\t",
(u_long)lt->conflicts[i * lrp->nmodes + j]);
fprintf(fp, "\n");
}
}
if (LF_ISSET(LOCK_DUMP_LOCKERS)) {
fprintf(fp, "%s\nLocker hash buckets\n", DB_LINE);
for (i = 0; i < lrp->locker_t_size; i++) {
label = 1;
for (lip =
SH_TAILQ_FIRST(<->locker_tab[i], __db_locker);
lip != NULL;
lip = SH_TAILQ_NEXT(lip, links, __db_locker)) {
if (label) {
fprintf(fp, "Bucket %lu:\n", (u_long)i);
label = 0;
}
__lock_dump_locker(lt, lip, fp);
}
}
}
if (LF_ISSET(LOCK_DUMP_OBJECTS)) {
fprintf(fp, "%s\nObject hash buckets\n", DB_LINE);
for (i = 0; i < lrp->object_t_size; i++) {
label = 1;
for (op = SH_TAILQ_FIRST(<->obj_tab[i], __db_lockobj);
op != NULL;
op = SH_TAILQ_NEXT(op, links, __db_lockobj)) {
if (label) {
fprintf(fp, "Bucket %lu:\n", (u_long)i);
label = 0;
}
__lock_dump_object(lt, op, fp);
}
}
}
if (LF_ISSET(LOCK_DUMP_FREE)) {
fprintf(fp, "%s\nLock free list\n", DB_LINE);
for (lp = SH_TAILQ_FIRST(&lrp->free_locks, __db_lock);
lp != NULL;
lp = SH_TAILQ_NEXT(lp, links, __db_lock))
fprintf(fp, "0x%lx: %lu\t%lu\t%s\t0x%lx\n", (u_long)lp,
(u_long)lp->holder, (u_long)lp->mode,
__lock_dump_status(lp->status), (u_long)lp->obj);
fprintf(fp, "%s\nObject free list\n", DB_LINE);
for (op = SH_TAILQ_FIRST(&lrp->free_objs, __db_lockobj);
op != NULL;
op = SH_TAILQ_NEXT(op, links, __db_lockobj))
fprintf(fp, "0x%lx\n", (u_long)op);
fprintf(fp, "%s\nLocker free list\n", DB_LINE);
for (lip = SH_TAILQ_FIRST(&lrp->free_lockers, __db_locker);
lip != NULL;
lip = SH_TAILQ_NEXT(lip, links, __db_locker))
fprintf(fp, "0x%lx\n", (u_long)lip);
}
if (LF_ISSET(LOCK_DUMP_MEM))
__db_shalloc_dump(lt->reginfo.addr, fp);
UNLOCKREGION(dbenv, lt);
}
static void
__lock_dump_locker(lt, lip, fp)
DB_LOCKTAB *lt;
DB_LOCKER *lip;
FILE *fp;
{
struct __db_lock *lp;
fprintf(fp, "L %lx [%ld]", (u_long)lip->id, (long)lip->dd_id);
fprintf(fp, " %s ", F_ISSET(lip, DB_LOCKER_DELETED) ? "(D)" : " ");
if ((lp = SH_LIST_FIRST(&lip->heldby, __db_lock)) == NULL)
fprintf(fp, "\n");
else
for (; lp != NULL;
lp = SH_LIST_NEXT(lp, locker_links, __db_lock))
__lock_printlock(lt, lp, 1);
}
static void
__lock_dump_object(lt, op, fp)
DB_LOCKTAB *lt;
DB_LOCKOBJ *op;
FILE *fp;
{
struct __db_lock *lp;
u_int32_t j;
u_int8_t *ptr;
u_int ch;
ptr = SH_DBT_PTR(&op->lockobj);
for (j = 0; j < op->lockobj.size; ptr++, j++) {
ch = *ptr;
fprintf(fp, isprint(ch) ? "%c" : "\\%o", ch);
}
fprintf(fp, "\n");
fprintf(fp, "H:");
for (lp =
SH_TAILQ_FIRST(&op->holders, __db_lock);
lp != NULL;
lp = SH_TAILQ_NEXT(lp, links, __db_lock))
__lock_printlock(lt, lp, 1);
lp = SH_TAILQ_FIRST(&op->waiters, __db_lock);
if (lp != NULL) {
fprintf(fp, "\nW:");
for (; lp != NULL; lp = SH_TAILQ_NEXT(lp, links, __db_lock))
__lock_printlock(lt, lp, 1);
}
}
static const char *
__lock_dump_status(status)
db_status_t status;
{
switch (status) {
case DB_LSTAT_ABORTED:
return ("aborted");
case DB_LSTAT_ERR:
return ("err");
case DB_LSTAT_FREE:
return ("free");
case DB_LSTAT_HELD:
return ("held");
case DB_LSTAT_NOGRANT:
return ("nogrant");
case DB_LSTAT_PENDING:
return ("pending");
case DB_LSTAT_WAITING:
return ("waiting");
}
return ("unknown status");
}
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