Barriers Server

Introduction

Expansion of the Minix system. Main goal is to implement new server that simulates barriers for incomming processes. If barrier reaches its capacity limit then releases all processes. It can be used to synchronize all processes.

Last changes

• clean code

(everything works. No issues. Ready to use)

Features

• server barriers has been created
• commands barrier_int, barrier_destroy and barrier_wait has been added and fully implemented
• communication between User Space and Server Space
• completed system with errnos
• communication between PM and BS
• releasing blocked process from barrier if signal
• remove process from barrier if it ended / exited
• release all barriers if server closes
• full implementation of /proc/barriers

Changed / Created files

UserSpace

• /src/include/barriers.h- header for user commands
• /src/include/Makefile - header added
• /src/lib/libc/sys-minix/barriers.c - script for user commands (main)
• /src/lib/libc/sys-minix/Makefile.inc - script added

ServerSpace

• /src/servers/Makefile - makefile for servers - BS added
• /src/servers/pm/const.h - string const added
• /src/servers/pm/proto.h - tell_bs added
• /src/servers/pm/signal.c - tell_bs call addded
• /src/servers/pm/forkexit.c - tell_bs call added
• /src/servers/pm/utility.c - tell_bs implementation
• /src/servers/procfs/Makefile - barriers added t
• /src/servers/procfs/root.c - barriers added to array
• /src/servers/procfs/barriers.h - header for barriers.c
• /src/servers/procfs/barriers.c - implementation of /proc/barriers
• /src/include/minix/com.h - added barriers server (BS) section
• /src/servers/barriers/Makefile - makefile with installation
• /src/servers/barriers/barriers.c - implementation of all user commands on server side
• /src/servers/barriers/barriers.conf - server config
• /src/servers/barriers/inc.h - main header with all functions
• /src/servers/barriers/barrier.h - header with barrier struct
• /src/servers/barriers/main.c - main logic (inicialization and signal management)

Rest

• /src/kernel/table.c - BS added
• /src/servers/rs/table.c - BS added

(failed atttempt to add BS to rest of servers)

Installation and Launch

How to clone and install

1. Get image of minix system (3.2v) - Minix_3.2
2. Install image on Oracle VM VirtualBox
3. Clone repository ([email protected]:ITAnalyst-JU/so-minix-barrierserver-PiJayson.git)
4. Copy all files to Virtual Box

How to use

• NONE

Issues

• NONE

ToDo:

• NONE