void CloseProjDB() {
freemem((void**) &inter);
freemem((void**) &intra);
freemem((void**) &inter_freq_idx);
freemem((void**) &intra_freq_idx);
CloseMemMap(&pDatasetMemMap);
}
int MAPFAM::DeleteRecords(PGLOBAL g, int irc)
{
int n;
if (trace)
htrc("MAP DeleteDB: irc=%d mempos=%p tobuf=%p Tpos=%p Spos=%p\n",
irc, Mempos, To_Buf, Tpos, Spos);
if (irc != RC_OK) {
/*******************************************************************/
/* EOF: position Fpos at the top of map position. */
/*******************************************************************/
Fpos = Top;
if (trace)
htrc("Fpos placed at file top=%p\n", Fpos);
} // endif irc
if (Tpos == Spos)
/*******************************************************************/
/* First line to delete. Move of eventual preceding lines is */
/* not required here, just setting of future Spos and Tpos. */
/*******************************************************************/
Tpos = Fpos; // Spos is set below
else if ((n = Fpos - Spos) > 0) {
/*******************************************************************/
/* Non consecutive line to delete. Move intermediate lines. */
/*******************************************************************/
memmove(Tpos, Spos, n);
Tpos += n;
if (trace)
htrc("move %d bytes\n", n);
} // endif n
if (irc == RC_OK) {
Spos = Mempos; // New start position
if (trace)
htrc("after: Tpos=%p Spos=%p\n", Tpos, Spos);
} else if (To_Fb) { // Can be NULL for deleted files
/*******************************************************************/
/* Last call after EOF has been reached. */
/* We must firstly Unmap the view and use the saved file handle */
/* to put an EOF at the end of the copied part of the file. */
/*******************************************************************/
PFBLOCK fp = To_Fb;
CloseMemMap(fp->Memory, (size_t)fp->Length);
fp->Count = 0; // Avoid doing it twice
/*******************************************************************/
/* Remove extra records. */
/*******************************************************************/
n = Tpos - Memory;
#if defined(WIN32)
DWORD drc = SetFilePointer(fp->Handle, n, NULL, FILE_BEGIN);
if (drc == 0xFFFFFFFF) {
sprintf(g->Message, MSG(FUNCTION_ERROR),
"SetFilePointer", GetLastError());
CloseHandle(fp->Handle);
return RC_FX;
} // endif
if (trace)
htrc("done, Tpos=%p newsize=%d drc=%d\n", Tpos, n, drc);
if (!SetEndOfFile(fp->Handle)) {
sprintf(g->Message, MSG(FUNCTION_ERROR),
"SetEndOfFile", GetLastError());
CloseHandle(fp->Handle);
return RC_FX;
} // endif
CloseHandle(fp->Handle);
#else // UNIX
if (ftruncate(fp->Handle, (off_t)n)) {
sprintf(g->Message, MSG(TRUNCATE_ERROR), strerror(errno));
close(fp->Handle);
return RC_FX;
} // endif
close(fp->Handle);
#endif // UNIX
} // endif irc
return RC_OK; // All is correct
} // end of DeleteRecords