C++ (Cpp) mdb_alloc_page示例

示例#1

文件： map.c 项目： rfc2616/mdbtools

guint32 
mdb_map_find_next_freepage(MdbTableDef *table, int row_size)
{
	MdbCatalogEntry *entry = table->entry;
	MdbHandle *mdb = entry->mdb;
	guint32 pgnum;
	guint32 cur_pg = 0;
	int free_space;

	do {
		pgnum = mdb_map_find_next(mdb, 
				table->free_usage_map, 
				table->freemap_sz, cur_pg);
		//printf("looking at page %d\n", pgnum);
		if (!pgnum) {
			/* allocate new page */
			pgnum = mdb_alloc_page(table);
			return pgnum;
		} else if (pgnum==-1) {
			mdb->fatal_error_handler("Error: mdb_map_find_next_freepage error while reading maps.\n");
			exit(1);
		}
		cur_pg = pgnum;

		mdb_read_pg(mdb, pgnum);
		free_space = mdb_pg_get_freespace(mdb);
		
	} while (free_space < row_size);

	//printf("page %d has %d bytes left\n", pgnum, free_space);

	return pgnum;
}

示例#2

文件： map.c 项目： TheTypoMaster/calligra

guint32
mdb_map_find_next_freepage(MdbTableDef *table, int row_size)
{
	MdbCatalogEntry *entry = table->entry;
	MdbHandle *mdb = entry->mdb;
	guint32 pgnum;
	guint32 cur_pg = 0;
	int free_space;

	do {
		pgnum = mdb_map_find_next(mdb,
				table->free_usage_map,
				table->freemap_sz, cur_pg);

		if (!pgnum) {
			/* allocate new page */
			pgnum = mdb_alloc_page(table);
			return pgnum;
		}
		cur_pg = pgnum;

		mdb_read_pg(mdb, pgnum);
		free_space = mdb_pg_get_freespace(mdb);

	} while (free_space < row_size);



	return pgnum;
}