To allow a single malloc package to be used in a given application,
provision is made for the traditional malloc, realloc, and
free functions to be implemented as special cases of the
mmalloc functions. In particular, if any of the functions that
expect malloc descriptors are called with a NULL pointer rather than a
valid malloc descriptor, then they default to using an sbrk managed
region.
The mmalloc package provides compatible malloc, realloc,
and free functions using this mechanism internally.
Applications can avoid this extra interface layer by simply including the
following defines:
#define malloc(size) mmalloc ((void *)0, (size)) #define realloc(ptr,size) mrealloc ((void *)0, (ptr), (size)); #define free(ptr) mfree ((void *)0, (ptr))
or replace the existing malloc, realloc, and free
calls with the above patterns if using #define causes problems.
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