Tools.h++ Manual

104011 Tandem Computers Incorporated 10-1
Using Class RWFileManager 10
Class RWFileManager allocates, deallocates and coalesces free space in a disk
file. This is done internally by maintaining on disk a linked-list of free space
blocks.
Two typedefs are used:
typedef long RWoffset;
typedef unsigned long RWspace;
The type RWoffset is used for the offset within the file to the start of a storage
space; RWspace is the amount of storage space required. The actual typedef
may vary depending on the system you are using.
Class RWFile is a public base class of class RWFileManager , therefore the
public member functions of class RWFile are available to class
RWFileManager .
10.1 Construction
The RWFileManager constructor has prototype:
RWFileManager(const char* filename);
The argument is the name of the file that the RWFileManager is to manage. If
it exists, it must contain a valid RWFileManager . Otherwise, one will be
created.