logical-clock

Java Swing Lamport/vector clock calculator for events over multiple processes

Demo:

logical-clock_demo.mov

Installation and Running:

• tested with java 19.0.1
• clone repo with git clone https://github.com/plt3/logical-clock
• in project directory, compile with javac LogicalClock.java
• then run Swing application with java LogicalClock

Usage:

• press buttons to the left of process lines to add events to the process
• mouse over an event to automatically see its Lamport and vector timestamps
• click on an event to set it as the source for a message (you should see it highlighted in red)
  • then, click on another event to set it as the destination for a message
• can clear all events and change the number of processes with the bottom buttons

Keybindings:

• type the key of a process number to add events to that process
  • i.e. typing 1 will add an event to process P1
• type the letter of an event to set it as a message source, then another event to set it as the destination
  • i.e. typing ab will send a message from event a to event b
• type + and - to increment/decrement the number of processes