class c4_Strategy
  A strategy encapsulates code dealing with the I/O system interface.

Public members
| c4_Strategy ();
virtual | ~c4_Strategy ();
virtual bool | IsValid () const; True if we can do I/O with this object
virtual void | DataSeek (t4_i32 position_); Set file position
virtual int | DataRead (void* buffer_, int length_); Read a number of bytes
void | DataLoad (void* buffer_, int length_); Read an exact number of bytes
virtual bool | DataWrite (const void* buffer_, int length_); Write a number of bytes, return true if successful
virtual void | DataCommit (t4_i32 newSize_); Flush and truncate file
virtual void | ResetFileMapping (); Override to support memory-mapped files
bool | _keepAfterCommit; Keep data in memory after each commit (default is false)
bool | _bytesFlipped; True if the storage format is not native (default is false)
int | _failure; Error code of last failed I/O operation, zero if I/O was ok
const t4_byte* | _mapStart; First byte in file mapping, zero if not active
const t4_byte* | _mapLimit; Past last byte in file mapping, zero if not active

Header file | "mk4.h" -- Dec 9, 1999