Description
int shm_attach (int key [, int
memsize [, int
perm]])
Shm_attach() returns an id that that can be
used to access the System V shared memory with the given key, the
first call creates the shared memory segment with mem_size
(default: sysvshm.init_mem in the configuration file, otherwise
10000 bytes) and the optional perm-bits (default: 0666).
A second call to shm_attach() for the same
key will return a different shared memory
identifier, but both identifiers access the same underlying
shared memory. Memsize and
perm will be ignored.
