IBM 000-8697 User Manual
System Architecture
2-21
UNIX Kernel and Semaphore-Allocation Parameters
Figure 2-1
Shared memory
must be attached to
a user process so
that it looks like
contiguous
memory.
Operating system memory
User process
SHMBASE
Next segment
attaches here when
lower boundary is too
large.
attaches here when
lower boundary is too
large.
Next segment of
shared memory
should attach here.
shared memory
should attach here.
Gap
Shared-memory
segment
Shared-memory
segment