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MemMgr is a fairly trivial memory management library. There
is little it does that cannot be done using routines in the
C library. (In fact, allocation and disposal is implemented
using C library routines.) The purposes of MemMgr are two-
fold.
(i) Minimize configuration burden on applications that
dynamically allocate memory. For instance, malloc() on
some systems returns a char pointer; on others it
returns a void pointer. The MemMgr library routines
encapsulate system-specific configuration differences
and exports a fixed interface which is system-indepen-
dent. Once you compile and install it, you just use it
without thinking about whether your UNIX is System V or
BSD inspired.
(ii) Provide two parallel sets of allocation routines which
either return NULL (for applications which want to
check) or panic (for applications which simply want to
die) on allocation failures. Panicking is implemented
using the ETM library, which introduces a dependency on
the ETM distribution. So be it. I use ETM for all my
programs anyway
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