SAMPLE: Demonstration of Using _fmalloc

• Microsoft Windows Software Development Kit (SDK) for Windows version 3.1

Smart Alloc (SMART) allows programmers to experiment using the _fmalloc() function in the Microsoft Windows operating system. It is a companion program for the technical article in the MSDN "Allocating Memory the Old Fashioned Way: malloc and Windows Applications."

With Smart Alloc and Heap Walker, programmers can interactively explore the behavior of _fmalloc(), _ffree(), GlobalAlloc(), GlobalFree(), and _heapmin(). They can allocate memory either using GlobalAlloc() or _fmalloc(), or from a DLL. They can determine when and how memory is allocated easily, without recompiling.

The source code for Smart Alloc also demonstrates some interesting features. Smart Alloc is a multiple-instance, large-model application when compiled with Microsoft C/C++ version 7.0. Another interesting feature of Smart Alloc is that it includes a dynamic link library (DLL) that intercepts all calls SMART.EXE makes to GlobalAlloc(), GlobalReAlloc(), and GlobalFree().

Smart Alloc was built with Microsoft C/C++ version 7.0 and tested under Microsoft Windows version 3.1.

Download SMART.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

• Microsoft Download Service (MSDL)

        Dial (206) 936-6735 to connect to MSDL
        Download SMART.EXE (size: 49325 bytes) 
  

• Internet (anonymous FTP)

        ftp ftp.microsoft.com
        Change to the \SOFTLIB\MSLFILES directory
        Get SMART.EXE (size: 49325 bytes)