Function PAllocate

general.cpp:3156–3188

// a size, and a string to use when printing error if the allocation fails.

pbyte PAllocate(long cb, CONST char *szType)
{
  char szT[cchSzDef];
  pbyte pb;

#ifdef DEBUG
  pb = (pbyte)PAllocateCore(cb + sizeof(dword)*3);
#else
  pb = (pbyte)PAllocateCore(cb);
#endif

  // Handle success or failure of the allocation.
  Assert(szType != NULL);
  if (pb == NULL) {
    sprintf(szT, "%s: Not enough memory for %s (%ld bytes).",
      szAppName, szType, cb);
    PrintWarning(szT);
  } else {
    is.cAlloc++;
    is.cAllocTotal++;
    is.cbAllocSize += cb;
  }

#ifdef DEBUG
  // Put sentinels at ends of allocation to check for buffer overruns.
  *(dword *)pb = dwCanary;
  *(dword *)(pb + sizeof(dword)) = cb;
  *(dword *)(pb + sizeof(dword)*2 + cb) = dwCanary;
  return pb + sizeof(dword)*2;
#else
  return pb;
#endif
}


// Free a memory buffer allocated with PAllocate().