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CVS $Id
The MBA facility is FSW's interface to a basic random memory allocator, in the fashion of malloc() or memalign(). For host machines MBA_alloc() and MEM_align() map directly onto these routines. However, for embedded systems the native "C" runtime routines allocate memory from the VxWorks system partition. For technical reasons, only a portion of the total memory available on a typical single board computer (SBC) can be managed within the context of the system partition. The remaining memory must be managed as a separate partition. It is this partition that the MBA facility manages.
The test can be run from the command line by typing
$ test_mba
A new test, applicable only on the embedded system, tests the bad block facility. There are 3 different test bad block lists, each testing a different boundary condition. Unfortunately, since VxWorks provides no way to destroy a partition, so one must reboot between each test
# test_mba_badblock badBlockList size
where badBlockList is an integer 0-2 inclusive
size is the size of the test block allocation
The test consists of initializing the MBA partition with a list of bad blocks, then allocating all the available memory in hunks of size. . Each allocated piece of memory is checked to see if any portion of it overlaps with and of the bad blocks.
1.5.8