[1]  The UNIX extension defines procedures for low-level, file-descriptor-based I/O; creation of pipes; file/record locking; file and directory system calls; process creation and control; signal handling; error handling; and obtaining information about date, time, users, limits, process resources, etc.

[2]  With a generational garbage collector, objects surviving garbage collections will not be touched again until there is only a certain amount of memory left on the heap, triggering a full garbage collection. Particularly in applications with large amounts of Scheme code or other constant data, partial GCs run much faster than full GCs. With incremental garbage collection, starting a garbage collection does not suspend the application until the GC is done; instead, the collector returns control to the application almost immediately (after having marked pages of interest unreadable with the mprotect system call) and regains control with a SIGSEGV signal.

Markup created by unroff 1.0,    September 24, 1996,