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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/db/db_reclaim.c')
-rw-r--r--debian/htdig/htdig-3.2.0b6/db/db_reclaim.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/db/db_reclaim.c b/debian/htdig/htdig-3.2.0b6/db/db_reclaim.c
new file mode 100644
index 00000000..34e62464
--- /dev/null
+++ b/debian/htdig/htdig-3.2.0b6/db/db_reclaim.c
@@ -0,0 +1,134 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997, 1998, 1999
+ * Sleepycat Software. All rights reserved.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)db_reclaim.c 11.2 (Sleepycat) 9/10/99";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+#endif
+
+#include "db_int.h"
+#include "db_page.h"
+#include "db_am.h"
+
+/*
+ * Assume that we enter with a valid pgno. We traverse a set of
+ * duplicate pages. The format of the callback routine is:
+ * callback(dbp, page, cookie, did_put). did_put is an output
+ * value that will be set to 1 by the callback routine if it
+ * already put the page back. Otherwise, this routine must
+ * put the page.
+ *
+ * PUBLIC: int CDB___db_traverse_dup __P((DB *,
+ * PUBLIC: db_pgno_t, int (*)(DB *, PAGE *, void *, int *), void *));
+ */
+int
+CDB___db_traverse_dup(dbp, pgno, callback, cookie)
+ DB *dbp;
+ db_pgno_t pgno;
+ int (*callback) __P((DB *, PAGE *, void *, int *));
+ void *cookie;
+{
+ PAGE *p;
+ int did_put, i, opgno, ret;
+
+ do {
+ did_put = 0;
+ if ((ret = CDB_memp_fget(dbp->mpf, &pgno, 0, &p)) != 0)
+ return (ret);
+ pgno = NEXT_PGNO(p);
+
+ for (i = 0; i < NUM_ENT(p); i++) {
+ if (B_TYPE(GET_BKEYDATA(p, i)->type) == B_OVERFLOW) {
+ opgno = GET_BOVERFLOW(p, i)->pgno;
+ if ((ret = CDB___db_traverse_big(dbp,
+ opgno, callback, cookie)) != 0)
+ goto err;
+ }
+ }
+
+ if ((ret = callback(dbp, p, cookie, &did_put)) != 0)
+ goto err;
+
+ if (!did_put)
+ if ((ret = CDB_memp_fput(dbp->mpf, p, 0)) != 0)
+ return (ret);
+ } while (pgno != PGNO_INVALID);
+
+ if (0) {
+err: if (did_put == 0)
+ (void)CDB_memp_fput(dbp->mpf, p, 0);
+ }
+ return (ret);
+}
+
+/*
+ * CDB___db_traverse_big
+ * Traverse a chain of overflow pages and call the callback routine
+ * on each one. The calling convention for the callback is:
+ * callback(dbp, page, cookie, did_put),
+ * where did_put is a return value indicating if the page in question has
+ * already been returned to the mpool.
+ *
+ * PUBLIC: int CDB___db_traverse_big __P((DB *,
+ * PUBLIC: db_pgno_t, int (*)(DB *, PAGE *, void *, int *), void *));
+ */
+int
+CDB___db_traverse_big(dbp, pgno, callback, cookie)
+ DB *dbp;
+ db_pgno_t pgno;
+ int (*callback) __P((DB *, PAGE *, void *, int *));
+ void *cookie;
+{
+ PAGE *p;
+ int did_put, ret;
+
+ do {
+ did_put = 0;
+ if ((ret = CDB_memp_fget(dbp->mpf, &pgno, 0, &p)) != 0)
+ return (ret);
+ pgno = NEXT_PGNO(p);
+ if ((ret = callback(dbp, p, cookie, &did_put)) == 0 &&
+ !did_put)
+ ret = CDB_memp_fput(dbp->mpf, p, 0);
+ } while (ret == 0 && pgno != PGNO_INVALID);
+
+ return (ret);
+}
+
+/*
+ * CDB___db_reclaim_callback
+ * This is the callback routine used during a delete of a subdatabase.
+ * we are traversing a btree or hash table and trying to free all the
+ * pages. Since they share common code for duplicates and overflow
+ * items, we traverse them identically and use this routine to do the
+ * actual free. The reason that this is callback is because hash uses
+ * the same traversal code for statistics gathering.
+ *
+ * PUBLIC: int CDB___db_reclaim_callback __P((DB *, PAGE *, void *, int *));
+ */
+int
+CDB___db_reclaim_callback(dbp, p, cookie, putp)
+ DB *dbp;
+ PAGE *p;
+ void *cookie;
+ int *putp;
+{
+ int ret;
+
+ COMPQUIET(dbp, NULL);
+
+ if ((ret = CDB___db_free(cookie, p)) != 0)
+ return (ret);
+ *putp = 1;
+
+ return (0);
+}