Class: SysVIPC::MessageQueue

Inherits:
Object
  • Object
show all
Includes:
SysVIPC
Defined in:
lib/SysVIPC.rb

Constant Summary

Constants included from SysVIPC

VERSION

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from SysVIPC

#check_result

Instance Attribute Details

#msgid ⇒ Object (readonly)

Returns the value of attribute msgid.



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# File 'lib/SysVIPC.rb', line 120

def msgid
  @msgid
end

Instance Method Details

#ipc_rmid ⇒ Object Also known as: rm

Remove. See msgctl(2).



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# File 'lib/SysVIPC.rb', line 144

def ipc_rmid
  check_result(msgctl(@msgid, IPC_RMID, nil))
end

#ipc_set(msqid_ds) ⇒ Object Also known as: msqid_ds=

Set the Msqid_ds object. See msgctl(2).



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# File 'lib/SysVIPC.rb', line 133

def ipc_set(msqid_ds)
  unless Msqid_ds === msqid_ds
	raise ArgumentError,
	  "argument to ipc_set must be a Msqid_ds"
  end
  check_result(msgctl(@msgid, IPC_SET, msqid_ds))
end

#ipc_stat ⇒ Object Also known as: msqid_ds

Return the Msqid_ds object. See msgctl(2).



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# File 'lib/SysVIPC.rb', line 124

def ipc_stat
  res, msqid_ds = msgctl(@msgid, IPC_STAT)
  check_result(res)
  msqid_ds
end

#rcv(type, size, flags = 0) ⇒ Object Also known as: receive

Receive a message of type type, limited to len bytes or fewer. See msgrcv(2).



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# File 'lib/SysVIPC.rb', line 159

def rcv(type, size, flags = 0)
  res, mtype, mtext = msgrcv(@msgid, size, type, flags)
  check_result(res)
  mtext
end

#snd(type, text, flags = 0) ⇒ Object Also known as: send

Send a message with type type and text text. See msgsnd(2).



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# File 'lib/SysVIPC.rb', line 151

def snd(type, text, flags = 0)
  check_result(msgsnd(@msgid, type, text, flags))
end