UMDH

The User-Mode Dump Heap (UMDH) tool, Umdh.exe, analyzes the Microsoft Windows heap memory allocations for a given process. UMDH has the following modes.

• Analyze a running process ("Mode 1"). UMDH captures and analyzes the heap memory allocations for a process. For each allocation, UMDH displays the size of the allocation, the size of the overhead, the pointer to the allocation and the allocation stack. If a process has more than one active memory heap, UMDH captures all heaps.
• Analyze UMDH log files ("Mode 2"). UMDH analyzes the logs to help detect memory leaks. When comparing two UMDH output logs from subsequent runs of a UMDF driver, UMDH displays the calls in which the allocation size increased the most between the runs.

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