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Perl Pocket Reference, 5th Edition
book

Perl Pocket Reference, 5th Edition

by Johan Vromans
July 2011
Intermediate to advanced content levelIntermediate to advanced
104 pages
2h 14m
English
O'Reilly Media, Inc.
Content preview from Perl Pocket Reference, 5th Edition

System V IPC

use the standard module IPC::SysV to access the message- and semaphore-specific operation names.

msgctl id, cmd, args

Calls msgctl. If cmd is IPC_STAT then args must be a scalar variable.

msgget key, flags

Creates a message queue for key. Returns the message queue identifier.

msgrcv id, $var, size, type, flags

Receives a message from queue id into $var.

msgsnd id, msg, flags

Sends msg to queue id.

semctl id, semnum, cmd, arg

Calls semctl. If cmd is IPC_STAT or GETALL then arg must be a scalar variable.

semget key, nsems, size, flags

Creates a set of semaphores for key. Returns the message semaphore identifier.

semop key, . . .

Performs semaphore operations.

shmctl id, cmd, arg

Calls shmctl. If cmd is IPC_STAT then arg must be a scalar variable.

shmget key, size, flags

Creates shared memory. Returns the shared memory segment identifier.

shmread id, $var, pos, size

Reads at most size bytes of the contents of shared memory segment id starting at offset pos into $var.

shmwrite id, string, pos, size

Writes at most size bytes of string into the contents of shared memory segment id at offset pos.

perlipc.

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Publisher Resources

ISBN: 9781449311186Errata Page