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Add a function pkgdb_compact() which VACUUM the sqlite database.
jlaffaye committed 15 years ago
commit 99a30d627a88190e5ebb7a2a689ecc47b3840056
parent 97c7fb7837499994323daa55734711a9dfde264a
3 files changed +47 -0
modified libpkg/pkg.h
@@ -349,6 +349,7 @@ int pkgdb_pkg_loadexecs(struct pkgdb *db, struct pkg *pkg);
int pkgdb_pkg_loadscripts(struct pkgdb *db, struct pkg *pkg);

int pkgdb_pkg_loadoptions(struct pkgdb *db, struct pkg *pkg);
+ 
int pkgdb_compact(struct pkgdb *db);

const char *pkgdb_get_dir(void);



/* create */
modified libpkg/pkgdb.c
@@ -1215,3 +1215,48 @@ pkgdb_unregister_pkg(struct pkgdb *db, const char *origin)


	return (EPKG_OK);

}
+
+ 
static int get_pragma(sqlite3 *s, const char *sql, int *res) {
+ 
	sqlite3_stmt *stmt;
+
+ 
	if (sqlite3_prepare(s, sql, -1, &stmt, NULL) != SQLITE_OK)
+ 
		return (ERROR_SQLITE(s));
+
+ 
	if (sqlite3_step(stmt) != SQLITE_ROW) {
+ 
		sqlite3_finalize(stmt);
+ 
		return (ERROR_SQLITE(s));
+ 
	}
+
+ 
	*res = sqlite3_column_int(stmt, 0);
+
+ 
	return (EPKG_OK);
+ 
}
+
+ 
int
+ 
pkgdb_compact(struct pkgdb *db)
+ 
{
+ 
	int page_count = 0;
+ 
	int freelist_count = 0;
+ 
	char *errmsg;
+ 
	int retcode = EPKG_OK;
+ 
	int ret;
+
+ 
	if (db == NULL)
+ 
		return (ERROR_BAD_ARG("db"));
+
+ 
	ret += get_pragma(db->sqlite, "PRAGMA page_count;", &page_count);
+ 
	ret += get_pragma(db->sqlite, "PRAGMA freelist_count;", &freelist_count);
+
+ 
	if (ret != EPKG_OK)
+ 
		return (EPKG_FATAL);
+
+ 
	if (page_count / freelist_count < 0.25)
+ 
		return (EPKG_OK);
+
+ 
	if (sqlite3_exec(db->sqlite, "VACUUM;", NULL, NULL, &errmsg) != SQLITE_OK){
+ 
		retcode = pkg_error_set(EPKG_FATAL, "%s", errmsg);
+ 
		sqlite3_free(errmsg);
+ 
	}
+
+ 
	return (retcode);
+ 
}
modified pkg/delete.c
@@ -76,6 +76,7 @@ exec_delete(int argc, char **argv)
	}



	pkgdb_it_free(it);
+ 
	pkgdb_compact(db);

	pkgdb_close(db);

	return (retcode);

}