Channel Module

A channel is a FIFO data structure used to communicate between different Chapel tasks. Since the operations on channel are blocking by default, it enables to send values from one task to another in a synchronized manner.

The module would comprise a class Channel to store the channel buffer and support operations on them.

The features inspired from the original Go Channels.

• Here are some functions that the module should have

  • send(value : eltType) : This function waits for a space in the buffer and sends the value to the Channel.

  • recv() : eltType : This function waits until the buffer is empty and returns the value sent to the Channel.

  • close() : This function is used to close the channel such that no more values will be sent to it.

• iter these() : An iterator to receive the values sent to the channel until it is closed.

• select statements : This statement lets you wait for multiple channel operations and executes if anyone of them is ready for communication.

Some related questions -

• Should this module be standard or package ?
• What should be the name of the module ?
  • proposal : Channels
• Should the Channel select be used with the Chapel select syntax or something else?