CYBOP 0.22.0

CYBOI

Communication architecture:

• Redesign completely to make it yet more uniform, slim and efficient
• Store communication values in cascade of pointer arrays for (1) internal memory (2) input output entry (3) server entry (4) client entry
• Realise optional asynchronous communication via enable thread and sense threadv
• Use iso c library "threads.h" being a wrapper for posix "pthread" library
• Distinguish between standalone client and server-side client stub
• Provide mutex-protected client requst buffer for each server
• Provide mutex-protected input buffer and output buffer for each client
• Detect length prefix or end suffix using message length deserialiser
• Use low-level functions "read" and "write" instead of stream functions
• Prepare timeout handling via function "time" and accepttime list

Interrupt pipe:

• Introduce interrupt pipe to avoid busy waiting with endless loop
• Communicate between input threads and main thread via interrupt pipe
• Let main thread block while waiting for input from interrupt pipe
• Clean up event (signal) handling in controller checker

Awakener:

• Use blocking input for all channels
• Eliminate busy waiting with sleep time variables
• Introduce awakener for letting the system send a fake input to itself
• Wake up blocking sensing threads, so that they can exit themselves
• Implement terminal awakener using function "ioctl"
• Implement display awakener using function "xcb_send_event" from "xcb/xproto.h"
• Wait for child thread to finish using function "thrd_join"

General:

• Optimise knowledge path deserialiser
• Add threader with spinner and cutter for handling thread functions
• Add porter with locker and unlocker for handling mutex
• Unify error logging

CYBOL

Lifecycle:

• maintain/startup and maintain/shutdown
• activate/enable and activate/disable
• dispatch/open and dispatch/close
• configure/initialise and configure/finalise
• feel/sense and feel/suspend
• communicate/receive and communicate/send
• stream/read and stream/write
• convert/decode and convert/encode
• represent/deserialise and represent/serialise

General:

• Eliminate cybol property "network_service" (e.g. "http"), since specifying a unique port (e.g. 80) suffices
• Add property "timeout" to operation "maintain/startup"
• Store client device identifier in corresponding cybol application (file descriptor, socket number, window id)

Application "presence":

• Distinguish request between file path and query with key-value-pairs
• Make css be transferred as file, since dynamic URL does only work with JavaScript
• Make header image and heraldic symbol get transferred as static file and not dynamic byte stream
• Remove "close" from http headers, to not always close http connection
• Adapt to using stack memory variables

Applications:

• Add small files to "communication" demonstrating lifecycle operations
• Simplify "www_server_dynamic" and delete css
• Split socket handler in "ui" into action handler and empty message sender, in order to reply to favicon and other requests
• Test language "message/binary-crlf" in "socket_client" and "socket_server"
• Make tables that remained empty in "wui" work again
• Make cybol application "user_interface/gui" work again

Project

Documentation:

• Move development documentation files and diagrams from "src/" to "doc/development/cyboi/"
• Update document "doc/development/cyboi/design_decisions.txt"
• Add diagram "doc/development/cyboi/knowledge_deserialiser.xmi"
• Create svg images from all diagrams
• Add comparison table document "doc/development/cyboi/service_lifecycle.pdf"