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98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996, 1997, 1998, 1999, 2000
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char revid[] = "$Id: mp_fset.c,v 11.13 2000/11/30 00:58:41 ubell Exp $";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#endif
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#ifdef HAVE_RPC
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#include "db_server.h"
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#endif
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#include "db_int.h"
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#include "db_shash.h"
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#include "mp.h"
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#ifdef HAVE_RPC
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#include "gen_client_ext.h"
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#include "rpc_client_ext.h"
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#endif
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/*
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* memp_fset --
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* Mpool page set-flag routine.
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*/
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int
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memp_fset(dbmfp, pgaddr, flags)
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DB_MPOOLFILE *dbmfp;
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void *pgaddr;
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u_int32_t flags;
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{
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BH *bhp;
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DB_ENV *dbenv;
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DB_MPOOL *dbmp;
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MPOOL *c_mp, *mp;
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int ret;
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dbmp = dbmfp->dbmp;
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dbenv = dbmp->dbenv;
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mp = dbmp->reginfo[0].primary;
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#ifdef HAVE_RPC
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if (F_ISSET(dbenv, DB_ENV_RPCCLIENT))
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return (__dbcl_memp_fset(dbmfp, pgaddr, flags));
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#endif
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PANIC_CHECK(dbenv);
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/* Validate arguments. */
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if (flags == 0)
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return (__db_ferr(dbenv, "memp_fset", 1));
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if ((ret = __db_fchk(dbenv, "memp_fset", flags,
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DB_MPOOL_DIRTY | DB_MPOOL_CLEAN | DB_MPOOL_DISCARD)) != 0)
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return (ret);
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if ((ret = __db_fcchk(dbenv, "memp_fset",
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flags, DB_MPOOL_CLEAN, DB_MPOOL_DIRTY)) != 0)
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return (ret);
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if (LF_ISSET(DB_MPOOL_DIRTY) && F_ISSET(dbmfp, MP_READONLY)) {
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__db_err(dbenv, "%s: dirty flag set for readonly file page",
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__memp_fn(dbmfp));
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return (EACCES);
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}
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/* Convert the page address to a buffer header. */
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bhp = (BH *)((u_int8_t *)pgaddr - SSZA(BH, buf));
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/* Convert the buffer header to a cache. */
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c_mp = BH_TO_CACHE(dbmp, bhp);
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R_LOCK(dbenv, dbmp->reginfo);
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if (LF_ISSET(DB_MPOOL_CLEAN) && F_ISSET(bhp, BH_DIRTY)) {
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++c_mp->stat.st_page_clean;
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--c_mp->stat.st_page_dirty;
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F_CLR(bhp, BH_DIRTY);
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}
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if (LF_ISSET(DB_MPOOL_DIRTY) && !F_ISSET(bhp, BH_DIRTY)) {
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--c_mp->stat.st_page_clean;
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++c_mp->stat.st_page_dirty;
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F_SET(bhp, BH_DIRTY);
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}
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if (LF_ISSET(DB_MPOOL_DISCARD))
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F_SET(bhp, BH_DISCARD);
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R_UNLOCK(dbenv, dbmp->reginfo);
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return (0);
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}
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