Import BSDDB 4.7.25 (as of svn r89086)

2017-09-04 13:40:25 -05:00
parent 4b29e0458f
commit 8f590873d0
4781 changed files with 2241032 additions and 6 deletions
--- a/examples_c/ex_env.c
+++ b/examples_c/ex_env.c
@@ -0,0 +1,134 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996,2008 Oracle.  All rights reserved.
+ *
+ * $Id: ex_env.c 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#include <sys/types.h>
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <db.h>
+
+#ifdef macintosh
+#define	DATABASE_HOME	":database"
+#define	CONFIG_DATA_DIR	":database"
+#else
+#ifdef DB_WIN32
+#define	DATABASE_HOME	"\\tmp\\database"
+#define	CONFIG_DATA_DIR	"\\database\\files"
+#else
+#define	DATABASE_HOME	"/tmp/database"
+#define	CONFIG_DATA_DIR	"/database/files"
+#endif
+#endif
+
+int	db_setup __P((const char *, const char *, FILE *, const char *));
+int	db_teardown __P((const char *, const char *, FILE *, const char *));
+int	main __P((void));
+
+/*
+ * An example of a program creating/configuring a Berkeley DB environment.
+ */
+int
+main()
+{
+	const char *data_dir, *home;
+	const char *progname = "ex_env";		/* Program name. */
+
+	/*
+	 * All of the shared database files live in DATABASE_HOME, but
+	 * data files will live in CONFIG_DATA_DIR.
+	 */
+	home = DATABASE_HOME;
+	data_dir = CONFIG_DATA_DIR;
+
+	printf("Setup env\n");
+	if (db_setup(home, data_dir, stderr, progname) != 0)
+		return (EXIT_FAILURE);
+
+	printf("Teardown env\n");
+	if (db_teardown(home, data_dir, stderr, progname) != 0)
+		return (EXIT_FAILURE);
+
+	return (EXIT_SUCCESS);
+}
+
+int
+db_setup(home, data_dir, errfp, progname)
+	const char *home, *data_dir, *progname;
+	FILE *errfp;
+{
+	DB_ENV *dbenv;
+	int ret;
+
+	/*
+	 * Create an environment object and initialize it for error
+	 * reporting.
+	 */
+	if ((ret = db_env_create(&dbenv, 0)) != 0) {
+		fprintf(errfp, "%s: %s\n", progname, db_strerror(ret));
+		return (1);
+	}
+	dbenv->set_errfile(dbenv, errfp);
+	dbenv->set_errpfx(dbenv, progname);
+
+	/*
+	 * We want to specify the shared memory buffer pool cachesize,
+	 * but everything else is the default.
+	 */
+	if ((ret = dbenv->set_cachesize(dbenv, 0, 64 * 1024, 0)) != 0) {
+		dbenv->err(dbenv, ret, "set_cachesize");
+		dbenv->close(dbenv, 0);
+		return (1);
+	}
+
+	/* Databases are in a subdirectory. */
+	(void)dbenv->set_data_dir(dbenv, data_dir);
+
+	/* Open the environment with full transactional support. */
+	if ((ret = dbenv->open(dbenv, home,
+    DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN,
+	    0)) != 0) {
+		dbenv->err(dbenv, ret, "environment open: %s", home);
+		dbenv->close(dbenv, 0);
+		return (1);
+	}
+
+	/* Do something interesting... */
+
+	/* Close the handle. */
+	if ((ret = dbenv->close(dbenv, 0)) != 0) {
+		fprintf(stderr, "DB_ENV->close: %s\n", db_strerror(ret));
+		return (1);
+	}
+	return (0);
+}
+
+int
+db_teardown(home, data_dir, errfp, progname)
+	const char *home, *data_dir, *progname;
+	FILE *errfp;
+{
+	DB_ENV *dbenv;
+	int ret;
+
+	/* Remove the shared database regions. */
+	if ((ret = db_env_create(&dbenv, 0)) != 0) {
+		fprintf(errfp, "%s: %s\n", progname, db_strerror(ret));
+		return (1);
+	}
+	dbenv->set_errfile(dbenv, errfp);
+	dbenv->set_errpfx(dbenv, progname);
+
+	(void)dbenv->set_data_dir(dbenv, data_dir);
+	if ((ret = dbenv->remove(dbenv, home, 0)) != 0) {
+		fprintf(stderr, "DB_ENV->remove: %s\n", db_strerror(ret));
+		return (1);
+	}
+	return (0);
+}