Subversion Repositories HelenOS

Last modification

• Rev 2557 2007-09-29 14:21:39
• Author: jermar

• Log message:

  Enable forwarding of IPC_M_AS_AREA_SEND, IPC_M_AS_AREA_RECV, IPC_M_DATA_SEND
  calls. In order to prevent the forwarder from cloberring the call data (i.e.
  source and destination address, and size) by treating these three methods as
  immutable on forward. This feature is experimental, but has huge benefits in
  that it can significantly reduce the amount of data sharing (the middle man need
  not modify its address space mappings) or the amount of data copying (the middle
  man need not receive the data from the sender and then resend them to the next
  recipient). As a result, it can reduce N such calls for a communication channel
  with N tasks along the way to 1 such call.