tcl_mp.c
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上传日期:2022-05-23
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文件大小:20k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1999-2001
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: tcl_mp.c,v 11.39 2002/08/06 06:21:27 bostic Exp $";
- #endif /* not lint */
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #include <stdlib.h>
- #include <string.h>
- #include <tcl.h>
- #endif
- #include "db_int.h"
- #include "dbinc/tcl_db.h"
- /*
- * Prototypes for procedures defined later in this file:
- */
- static int mp_Cmd __P((ClientData, Tcl_Interp *, int, Tcl_Obj * CONST*));
- static int pg_Cmd __P((ClientData, Tcl_Interp *, int, Tcl_Obj * CONST*));
- static int tcl_MpGet __P((Tcl_Interp *, int, Tcl_Obj * CONST*,
- DB_MPOOLFILE *, DBTCL_INFO *));
- static int tcl_Pg __P((Tcl_Interp *, int, Tcl_Obj * CONST*,
- void *, DB_MPOOLFILE *, DBTCL_INFO *, int));
- static int tcl_PgInit __P((Tcl_Interp *, int, Tcl_Obj * CONST*,
- void *, DBTCL_INFO *));
- static int tcl_PgIsset __P((Tcl_Interp *, int, Tcl_Obj * CONST*,
- void *, DBTCL_INFO *));
- /*
- * _MpInfoDelete --
- * Removes "sub" mp page info structures that are children
- * of this mp.
- *
- * PUBLIC: void _MpInfoDelete __P((Tcl_Interp *, DBTCL_INFO *));
- */
- void
- _MpInfoDelete(interp, mpip)
- Tcl_Interp *interp; /* Interpreter */
- DBTCL_INFO *mpip; /* Info for mp */
- {
- DBTCL_INFO *nextp, *p;
- for (p = LIST_FIRST(&__db_infohead); p != NULL; p = nextp) {
- /*
- * Check if this info structure "belongs" to this
- * mp. Remove its commands and info structure.
- */
- nextp = LIST_NEXT(p, entries);
- if (p->i_parent == mpip && p->i_type == I_PG) {
- (void)Tcl_DeleteCommand(interp, p->i_name);
- _DeleteInfo(p);
- }
- }
- }
- #if CONFIG_TEST
- /*
- * tcl_MpSync --
- *
- * PUBLIC: int tcl_MpSync __P((Tcl_Interp *, int, Tcl_Obj * CONST*, DB_ENV *));
- */
- int
- tcl_MpSync(interp, objc, objv, envp)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- DB_ENV *envp; /* Environment pointer */
- {
- DB_LSN lsn, *lsnp;
- int result, ret;
- result = TCL_OK;
- lsnp = NULL;
- /*
- * No flags, must be 3 args.
- */
- if (objc == 3) {
- result = _GetLsn(interp, objv[2], &lsn);
- if (result == TCL_ERROR)
- return (result);
- lsnp = &lsn;
- }
- else if (objc != 2) {
- Tcl_WrongNumArgs(interp, 2, objv, "lsn");
- return (TCL_ERROR);
- }
- _debug_check();
- ret = envp->memp_sync(envp, lsnp);
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "memp sync");
- return (result);
- }
- /*
- * tcl_MpTrickle --
- *
- * PUBLIC: int tcl_MpTrickle __P((Tcl_Interp *, int,
- * PUBLIC: Tcl_Obj * CONST*, DB_ENV *));
- */
- int
- tcl_MpTrickle(interp, objc, objv, envp)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- DB_ENV *envp; /* Environment pointer */
- {
- int pages;
- int percent;
- int result;
- int ret;
- Tcl_Obj *res;
- result = TCL_OK;
- /*
- * No flags, must be 3 args.
- */
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 2, objv, "percent");
- return (TCL_ERROR);
- }
- result = Tcl_GetIntFromObj(interp, objv[2], &percent);
- if (result == TCL_ERROR)
- return (result);
- _debug_check();
- ret = envp->memp_trickle(envp, percent, &pages);
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "memp trickle");
- if (result == TCL_ERROR)
- return (result);
- res = Tcl_NewIntObj(pages);
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- /*
- * tcl_Mp --
- *
- * PUBLIC: int tcl_Mp __P((Tcl_Interp *, int,
- * PUBLIC: Tcl_Obj * CONST*, DB_ENV *, DBTCL_INFO *));
- */
- int
- tcl_Mp(interp, objc, objv, envp, envip)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- DB_ENV *envp; /* Environment pointer */
- DBTCL_INFO *envip; /* Info pointer */
- {
- static char *mpopts[] = {
- "-create",
- "-mode",
- "-nommap",
- "-pagesize",
- "-rdonly",
- NULL
- };
- enum mpopts {
- MPCREATE,
- MPMODE,
- MPNOMMAP,
- MPPAGE,
- MPRDONLY
- };
- DBTCL_INFO *ip;
- DB_MPOOLFILE *mpf;
- Tcl_Obj *res;
- u_int32_t flag;
- int i, pgsize, mode, optindex, result, ret;
- char *file, newname[MSG_SIZE];
- result = TCL_OK;
- i = 2;
- flag = 0;
- mode = 0;
- pgsize = 0;
- memset(newname, 0, MSG_SIZE);
- while (i < objc) {
- if (Tcl_GetIndexFromObj(interp, objv[i],
- mpopts, "option", TCL_EXACT, &optindex) != TCL_OK) {
- /*
- * Reset the result so we don't get an errant
- * error message if there is another error.
- * This arg is the file name.
- */
- if (IS_HELP(objv[i]) == TCL_OK)
- return (TCL_OK);
- Tcl_ResetResult(interp);
- break;
- }
- i++;
- switch ((enum mpopts)optindex) {
- case MPCREATE:
- flag |= DB_CREATE;
- break;
- case MPNOMMAP:
- flag |= DB_NOMMAP;
- break;
- case MPPAGE:
- if (i >= objc) {
- Tcl_WrongNumArgs(interp, 2, objv,
- "?-pagesize size?");
- result = TCL_ERROR;
- break;
- }
- /*
- * Don't need to check result here because
- * if TCL_ERROR, the error message is already
- * set up, and we'll bail out below. If ok,
- * the mode is set and we go on.
- */
- result = Tcl_GetIntFromObj(interp, objv[i++], &pgsize);
- break;
- case MPRDONLY:
- flag |= DB_RDONLY;
- break;
- case MPMODE:
- if (i >= objc) {
- Tcl_WrongNumArgs(interp, 2, objv,
- "?-mode mode?");
- result = TCL_ERROR;
- break;
- }
- /*
- * Don't need to check result here because
- * if TCL_ERROR, the error message is already
- * set up, and we'll bail out below. If ok,
- * the mode is set and we go on.
- */
- result = Tcl_GetIntFromObj(interp, objv[i++], &mode);
- break;
- }
- if (result != TCL_OK)
- goto error;
- }
- /*
- * Any left over arg is a file name. It better be the last arg.
- */
- file = NULL;
- if (i != objc) {
- if (i != objc - 1) {
- Tcl_WrongNumArgs(interp, 2, objv, "?args? ?file?");
- result = TCL_ERROR;
- goto error;
- }
- file = Tcl_GetStringFromObj(objv[i++], NULL);
- }
- snprintf(newname, sizeof(newname), "%s.mp%d",
- envip->i_name, envip->i_envmpid);
- ip = _NewInfo(interp, NULL, newname, I_MP);
- if (ip == NULL) {
- Tcl_SetResult(interp, "Could not set up info",
- TCL_STATIC);
- return (TCL_ERROR);
- }
- _debug_check();
- if ((ret = envp->memp_fcreate(envp, &mpf, 0)) != 0) {
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "mpool");
- _DeleteInfo(ip);
- goto error;
- }
- /*
- * XXX
- * Interface doesn't currently support DB_MPOOLFILE configuration.
- */
- if ((ret = mpf->open(mpf, file, flag, mode, (size_t)pgsize)) != 0) {
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "mpool");
- _DeleteInfo(ip);
- (void)mpf->close(mpf, 0);
- goto error;
- }
- /*
- * Success. Set up return. Set up new info and command widget for
- * this mpool.
- */
- envip->i_envmpid++;
- ip->i_parent = envip;
- ip->i_pgsz = pgsize;
- _SetInfoData(ip, mpf);
- Tcl_CreateObjCommand(interp, newname,
- (Tcl_ObjCmdProc *)mp_Cmd, (ClientData)mpf, NULL);
- res = Tcl_NewStringObj(newname, strlen(newname));
- Tcl_SetObjResult(interp, res);
- error:
- return (result);
- }
- /*
- * tcl_MpStat --
- *
- * PUBLIC: int tcl_MpStat __P((Tcl_Interp *, int, Tcl_Obj * CONST*, DB_ENV *));
- */
- int
- tcl_MpStat(interp, objc, objv, envp)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- DB_ENV *envp; /* Environment pointer */
- {
- DB_MPOOL_STAT *sp;
- DB_MPOOL_FSTAT **fsp, **savefsp;
- int result;
- int ret;
- Tcl_Obj *res;
- Tcl_Obj *res1;
- result = TCL_OK;
- savefsp = NULL;
- /*
- * No args for this. Error if there are some.
- */
- if (objc != 2) {
- Tcl_WrongNumArgs(interp, 2, objv, NULL);
- return (TCL_ERROR);
- }
- _debug_check();
- ret = envp->memp_stat(envp, &sp, &fsp, 0);
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "memp stat");
- if (result == TCL_ERROR)
- return (result);
- /*
- * Have our stats, now construct the name value
- * list pairs and free up the memory.
- */
- res = Tcl_NewObj();
- /*
- * MAKE_STAT_LIST assumes 'res' and 'error' label.
- */
- MAKE_STAT_LIST("Cache size (gbytes)", sp->st_gbytes);
- MAKE_STAT_LIST("Cache size (bytes)", sp->st_bytes);
- MAKE_STAT_LIST("Number of caches", sp->st_ncache);
- MAKE_STAT_LIST("Region size", sp->st_regsize);
- MAKE_STAT_LIST("Pages mapped into address space", sp->st_map);
- MAKE_STAT_LIST("Cache hits", sp->st_cache_hit);
- MAKE_STAT_LIST("Cache misses", sp->st_cache_miss);
- MAKE_STAT_LIST("Pages created", sp->st_page_create);
- MAKE_STAT_LIST("Pages read in", sp->st_page_in);
- MAKE_STAT_LIST("Pages written", sp->st_page_out);
- MAKE_STAT_LIST("Clean page evictions", sp->st_ro_evict);
- MAKE_STAT_LIST("Dirty page evictions", sp->st_rw_evict);
- MAKE_STAT_LIST("Dirty pages trickled", sp->st_page_trickle);
- MAKE_STAT_LIST("Cached pages", sp->st_pages);
- MAKE_STAT_LIST("Cached clean pages", sp->st_page_clean);
- MAKE_STAT_LIST("Cached dirty pages", sp->st_page_dirty);
- MAKE_STAT_LIST("Hash buckets", sp->st_hash_buckets);
- MAKE_STAT_LIST("Hash lookups", sp->st_hash_searches);
- MAKE_STAT_LIST("Longest hash chain found", sp->st_hash_longest);
- MAKE_STAT_LIST("Hash elements examined", sp->st_hash_examined);
- MAKE_STAT_LIST("Number of hash bucket nowaits", sp->st_hash_nowait);
- MAKE_STAT_LIST("Number of hash bucket waits", sp->st_hash_wait);
- MAKE_STAT_LIST("Maximum number of hash bucket waits",
- sp->st_hash_max_wait);
- MAKE_STAT_LIST("Number of region lock nowaits", sp->st_region_nowait);
- MAKE_STAT_LIST("Number of region lock waits", sp->st_region_wait);
- MAKE_STAT_LIST("Page allocations", sp->st_alloc);
- MAKE_STAT_LIST("Buckets examined during allocation",
- sp->st_alloc_buckets);
- MAKE_STAT_LIST("Maximum buckets examined during allocation",
- sp->st_alloc_max_buckets);
- MAKE_STAT_LIST("Pages examined during allocation", sp->st_alloc_pages);
- MAKE_STAT_LIST("Maximum pages examined during allocation",
- sp->st_alloc_max_pages);
- /*
- * Save global stat list as res1. The MAKE_STAT_LIST
- * macro assumes 'res' so we'll use that to build up
- * our per-file sublist.
- */
- res1 = res;
- for (savefsp = fsp; fsp != NULL && *fsp != NULL; fsp++) {
- res = Tcl_NewObj();
- result = _SetListElem(interp, res, "File Name",
- strlen("File Name"), (*fsp)->file_name,
- strlen((*fsp)->file_name));
- if (result != TCL_OK)
- goto error;
- MAKE_STAT_LIST("Page size", (*fsp)->st_pagesize);
- MAKE_STAT_LIST("Pages mapped into address space",
- (*fsp)->st_map);
- MAKE_STAT_LIST("Cache hits", (*fsp)->st_cache_hit);
- MAKE_STAT_LIST("Cache misses", (*fsp)->st_cache_miss);
- MAKE_STAT_LIST("Pages created", (*fsp)->st_page_create);
- MAKE_STAT_LIST("Pages read in", (*fsp)->st_page_in);
- MAKE_STAT_LIST("Pages written", (*fsp)->st_page_out);
- /*
- * Now that we have a complete "per-file" stat list, append
- * that to the other list.
- */
- result = Tcl_ListObjAppendElement(interp, res1, res);
- if (result != TCL_OK)
- goto error;
- }
- Tcl_SetObjResult(interp, res1);
- error:
- free(sp);
- if (savefsp != NULL)
- free(savefsp);
- return (result);
- }
- /*
- * mp_Cmd --
- * Implements the "mp" widget.
- */
- static int
- mp_Cmd(clientData, interp, objc, objv)
- ClientData clientData; /* Mp handle */
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- {
- static char *mpcmds[] = {
- "close",
- "fsync",
- "get",
- NULL
- };
- enum mpcmds {
- MPCLOSE,
- MPFSYNC,
- MPGET
- };
- DB_MPOOLFILE *mp;
- int cmdindex, length, result, ret;
- DBTCL_INFO *mpip;
- Tcl_Obj *res;
- char *obj_name;
- Tcl_ResetResult(interp);
- mp = (DB_MPOOLFILE *)clientData;
- obj_name = Tcl_GetStringFromObj(objv[0], &length);
- mpip = _NameToInfo(obj_name);
- result = TCL_OK;
- if (mp == NULL) {
- Tcl_SetResult(interp, "NULL mp pointer", TCL_STATIC);
- return (TCL_ERROR);
- }
- if (mpip == NULL) {
- Tcl_SetResult(interp, "NULL mp info pointer", TCL_STATIC);
- return (TCL_ERROR);
- }
- /*
- * Get the command name index from the object based on the dbcmds
- * defined above.
- */
- if (Tcl_GetIndexFromObj(interp,
- objv[1], mpcmds, "command", TCL_EXACT, &cmdindex) != TCL_OK)
- return (IS_HELP(objv[1]));
- res = NULL;
- switch ((enum mpcmds)cmdindex) {
- case MPCLOSE:
- if (objc != 2) {
- Tcl_WrongNumArgs(interp, 1, objv, NULL);
- return (TCL_ERROR);
- }
- _debug_check();
- ret = mp->close(mp, 0);
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret),
- "mp close");
- _MpInfoDelete(interp, mpip);
- (void)Tcl_DeleteCommand(interp, mpip->i_name);
- _DeleteInfo(mpip);
- break;
- case MPFSYNC:
- if (objc != 2) {
- Tcl_WrongNumArgs(interp, 1, objv, NULL);
- return (TCL_ERROR);
- }
- _debug_check();
- ret = mp->sync(mp);
- res = Tcl_NewIntObj(ret);
- break;
- case MPGET:
- result = tcl_MpGet(interp, objc, objv, mp, mpip);
- break;
- }
- /*
- * Only set result if we have a res. Otherwise, lower
- * functions have already done so.
- */
- if (result == TCL_OK && res)
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- /*
- * tcl_MpGet --
- */
- static int
- tcl_MpGet(interp, objc, objv, mp, mpip)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- DB_MPOOLFILE *mp; /* mp pointer */
- DBTCL_INFO *mpip; /* mp info pointer */
- {
- static char *mpget[] = {
- "-create",
- "-last",
- "-new",
- NULL
- };
- enum mpget {
- MPGET_CREATE,
- MPGET_LAST,
- MPGET_NEW
- };
- DBTCL_INFO *ip;
- Tcl_Obj *res;
- db_pgno_t pgno;
- u_int32_t flag;
- int i, ipgno, optindex, result, ret;
- char newname[MSG_SIZE];
- void *page;
- result = TCL_OK;
- memset(newname, 0, MSG_SIZE);
- i = 2;
- flag = 0;
- while (i < objc) {
- if (Tcl_GetIndexFromObj(interp, objv[i],
- mpget, "option", TCL_EXACT, &optindex) != TCL_OK) {
- /*
- * Reset the result so we don't get an errant
- * error message if there is another error.
- * This arg is the page number.
- */
- if (IS_HELP(objv[i]) == TCL_OK)
- return (TCL_OK);
- Tcl_ResetResult(interp);
- break;
- }
- i++;
- switch ((enum mpget)optindex) {
- case MPGET_CREATE:
- flag |= DB_MPOOL_CREATE;
- break;
- case MPGET_LAST:
- flag |= DB_MPOOL_LAST;
- break;
- case MPGET_NEW:
- flag |= DB_MPOOL_NEW;
- break;
- }
- if (result != TCL_OK)
- goto error;
- }
- /*
- * Any left over arg is a page number. It better be the last arg.
- */
- ipgno = 0;
- if (i != objc) {
- if (i != objc - 1) {
- Tcl_WrongNumArgs(interp, 2, objv, "?args? ?pgno?");
- result = TCL_ERROR;
- goto error;
- }
- result = Tcl_GetIntFromObj(interp, objv[i++], &ipgno);
- if (result != TCL_OK)
- goto error;
- }
- snprintf(newname, sizeof(newname), "%s.pg%d",
- mpip->i_name, mpip->i_mppgid);
- ip = _NewInfo(interp, NULL, newname, I_PG);
- if (ip == NULL) {
- Tcl_SetResult(interp, "Could not set up info",
- TCL_STATIC);
- return (TCL_ERROR);
- }
- _debug_check();
- pgno = ipgno;
- ret = mp->get(mp, &pgno, flag, &page);
- result = _ReturnSetup(interp, ret, DB_RETOK_MPGET(ret), "mpool get");
- if (result == TCL_ERROR)
- _DeleteInfo(ip);
- else {
- /*
- * Success. Set up return. Set up new info
- * and command widget for this mpool.
- */
- mpip->i_mppgid++;
- ip->i_parent = mpip;
- ip->i_pgno = pgno;
- ip->i_pgsz = mpip->i_pgsz;
- _SetInfoData(ip, page);
- Tcl_CreateObjCommand(interp, newname,
- (Tcl_ObjCmdProc *)pg_Cmd, (ClientData)page, NULL);
- res = Tcl_NewStringObj(newname, strlen(newname));
- Tcl_SetObjResult(interp, res);
- }
- error:
- return (result);
- }
- /*
- * pg_Cmd --
- * Implements the "pg" widget.
- */
- static int
- pg_Cmd(clientData, interp, objc, objv)
- ClientData clientData; /* Page handle */
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- {
- static char *pgcmds[] = {
- "init",
- "is_setto",
- "pgnum",
- "pgsize",
- "put",
- "set",
- NULL
- };
- enum pgcmds {
- PGINIT,
- PGISSET,
- PGNUM,
- PGSIZE,
- PGPUT,
- PGSET
- };
- DB_MPOOLFILE *mp;
- int cmdindex, length, result;
- char *obj_name;
- void *page;
- DBTCL_INFO *pgip;
- Tcl_Obj *res;
- Tcl_ResetResult(interp);
- page = (void *)clientData;
- obj_name = Tcl_GetStringFromObj(objv[0], &length);
- pgip = _NameToInfo(obj_name);
- mp = NAME_TO_MP(pgip->i_parent->i_name);
- result = TCL_OK;
- if (page == NULL) {
- Tcl_SetResult(interp, "NULL page pointer", TCL_STATIC);
- return (TCL_ERROR);
- }
- if (mp == NULL) {
- Tcl_SetResult(interp, "NULL mp pointer", TCL_STATIC);
- return (TCL_ERROR);
- }
- if (pgip == NULL) {
- Tcl_SetResult(interp, "NULL page info pointer", TCL_STATIC);
- return (TCL_ERROR);
- }
- /*
- * Get the command name index from the object based on the dbcmds
- * defined above.
- */
- if (Tcl_GetIndexFromObj(interp,
- objv[1], pgcmds, "command", TCL_EXACT, &cmdindex) != TCL_OK)
- return (IS_HELP(objv[1]));
- res = NULL;
- switch ((enum pgcmds)cmdindex) {
- case PGNUM:
- res = Tcl_NewLongObj((long)pgip->i_pgno);
- break;
- case PGSIZE:
- res = Tcl_NewLongObj(pgip->i_pgsz);
- break;
- case PGSET:
- case PGPUT:
- result = tcl_Pg(interp, objc, objv, page, mp, pgip,
- cmdindex == PGSET ? 0 : 1);
- break;
- case PGINIT:
- result = tcl_PgInit(interp, objc, objv, page, pgip);
- break;
- case PGISSET:
- result = tcl_PgIsset(interp, objc, objv, page, pgip);
- break;
- }
- /*
- * Only set result if we have a res. Otherwise, lower
- * functions have already done so.
- */
- if (result == TCL_OK && res)
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- static int
- tcl_Pg(interp, objc, objv, page, mp, pgip, putop)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- void *page; /* Page pointer */
- DB_MPOOLFILE *mp; /* Mpool pointer */
- DBTCL_INFO *pgip; /* Info pointer */
- int putop; /* Operation */
- {
- static char *pgopt[] = {
- "-clean",
- "-dirty",
- "-discard",
- NULL
- };
- enum pgopt {
- PGCLEAN,
- PGDIRTY,
- PGDISCARD
- };
- u_int32_t flag;
- int i, optindex, result, ret;
- result = TCL_OK;
- i = 2;
- flag = 0;
- while (i < objc) {
- if (Tcl_GetIndexFromObj(interp, objv[i],
- pgopt, "option", TCL_EXACT, &optindex) != TCL_OK)
- return (IS_HELP(objv[i]));
- i++;
- switch ((enum pgopt)optindex) {
- case PGCLEAN:
- flag |= DB_MPOOL_CLEAN;
- break;
- case PGDIRTY:
- flag |= DB_MPOOL_DIRTY;
- break;
- case PGDISCARD:
- flag |= DB_MPOOL_DISCARD;
- break;
- }
- }
- _debug_check();
- if (putop)
- ret = mp->put(mp, page, flag);
- else
- ret = mp->set(mp, page, flag);
- result = _ReturnSetup(interp, ret, DB_RETOK_STD(ret), "page");
- if (putop) {
- (void)Tcl_DeleteCommand(interp, pgip->i_name);
- _DeleteInfo(pgip);
- }
- return (result);
- }
- static int
- tcl_PgInit(interp, objc, objv, page, pgip)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- void *page; /* Page pointer */
- DBTCL_INFO *pgip; /* Info pointer */
- {
- Tcl_Obj *res;
- size_t pgsz;
- long *p, *endp, newval;
- int length, result;
- u_char *s;
- result = TCL_OK;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 2, objv, "val");
- return (TCL_ERROR);
- }
- pgsz = pgip->i_pgsz;
- result = Tcl_GetLongFromObj(interp, objv[2], &newval);
- if (result != TCL_OK) {
- s = Tcl_GetByteArrayFromObj(objv[2], &length);
- if (s == NULL)
- return (TCL_ERROR);
- memcpy(page, s,
- ((size_t)length < pgsz) ? (size_t)length : pgsz);
- result = TCL_OK;
- } else {
- p = (long *)page;
- for (endp = p + (pgsz / sizeof(long)); p < endp; p++)
- *p = newval;
- }
- res = Tcl_NewIntObj(0);
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- static int
- tcl_PgIsset(interp, objc, objv, page, pgip)
- Tcl_Interp *interp; /* Interpreter */
- int objc; /* How many arguments? */
- Tcl_Obj *CONST objv[]; /* The argument objects */
- void *page; /* Page pointer */
- DBTCL_INFO *pgip; /* Info pointer */
- {
- Tcl_Obj *res;
- size_t pgsz;
- long *p, *endp, newval;
- int length, result;
- u_char *s;
- result = TCL_OK;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 2, objv, "val");
- return (TCL_ERROR);
- }
- pgsz = pgip->i_pgsz;
- result = Tcl_GetLongFromObj(interp, objv[2], &newval);
- if (result != TCL_OK) {
- if ((s = Tcl_GetByteArrayFromObj(objv[2], &length)) == NULL)
- return (TCL_ERROR);
- result = TCL_OK;
- if (memcmp(page, s,
- ((size_t)length < pgsz) ? (size_t)length : pgsz ) != 0) {
- res = Tcl_NewIntObj(0);
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- } else {
- p = (long *)page;
- /*
- * If any value is not the same, return 0 (is not set to
- * this value). Otherwise, if we finish the loop, we return 1
- * (is set to this value).
- */
- for (endp = p + (pgsz/sizeof(long)); p < endp; p++)
- if (*p != newval) {
- res = Tcl_NewIntObj(0);
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- }
- res = Tcl_NewIntObj(1);
- Tcl_SetObjResult(interp, res);
- return (result);
- }
- #endif