tree 569b4ba23998852bf0b37543f21ae85f924f8003
parent 087a751fbae04142d7c95a39b4fd4a37b95a83e5
author Gilbert Chen <gilbert.chen@arm.com> 1704810326 +0700
committer Thu Nguyen <thu@os.amperecomputing.com> 1716884299 +0000

requester: Add coroutine API

Added coroutine API to Handler using stdexec to help send and receive
messages in one function call.

For example, to get all PDRs from terminus needs multiple getPDR
commands.  Except first getPDR commands, the following getPDR command
request data(e.g.  dataTransferHandle) needs the previous getPDR command
response data(e.g.  nextDataTransferHandle). By using C++ co_await, the
code to get all PDRs can straightforward be implemented by a while loop.

Pseudo code example:
    do
    {
        auto rc = co_await getPDR(dataTransferHndl, ...);

        // update dataTransferHndl for next getPDR command
        dataTransferHndl = nextDataTransferHndl;

    } while(...);

Signed-off-by: Gilbert Chen <gilbert.chen@arm.com>
Signed-off-by: Khang Nguyen <khangng@amperecomputing.com>
Signed-off-by: Thu Nguyen <thu@os.amperecomputing.com>
Change-Id: I7b47d15ac15f6ae661ec94dca6a281844b939a44