shmread

shmread ID,VAR,POS,SIZE

shmwrite ID,STRING,POS,SIZE

Reads or writes the System V shared memory segment ID starting at position POS for size SIZE by attaching to it, copying in/out, and detaching from it. When reading, VAR must be a variable that will hold the data read. When writing, if STRING is too long, only SIZE bytes are used; if STRING is too short, nulls are written to fill out SIZE bytes. Return true if successful, or false if there is an error. shmread() taints the variable. See also perlipc/"SysV IPC", IPC::SysV documentation, and the IPC::Shareable module from CPAN.