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Software components

JIT Scheduler consists of 3 components: Terminal, User Scheduler and System Scheduler.

Terminal

JIT Terminal is the tool, which helps user to create and edit tasks. It also controls settings.

User and System Schedulers (Executives)

Schedule Executive is the program, which checks time and runs tasks. JIT Scheduler manages two Schedules : User Schedule and System Schedule. User Schedule contains task of one user. Different users have different and separate tasks. Scheduler executes user's tasks when corresponding user is logged on.

System Schedule is united for whole computer and all users. It doesn't depend on logged users.

User Scheduler (sched.exe) is the common Windows application. It can be installed and configured by common user and doesn't require any special privileges ( under Windows® NT4/2000/XP). User Scheduler inserts icon in the System Tray, so it is controlled via context menu invoked by clicking on this icon. More options are available in Terminal : "Options"/"User Scheduler".

System Scheduler (schednt.exe) is the service. System Scheduler can be installed in Windows® NT/2000/XP and Windows® 95/98/Me, but I think it is useless in Windows® 95/98/Me. Service requires special privileges, so it must be installed and configured by Administrator or privileged user.

It is important to know that this service works in System account context, so it is important to provide corresponding access to System Schedule file, Log. file and files specified in tasks. Options are available in Terminal : "Options"/"System Scheduler".

It is also important to know that System Scheduler does it's work even when there is no logged user on workstation. So it is recommended to schedule programs, which can work in batch mode (without any user actions and input).

Process Killer

Process Killer is the small program, which terminates processes (running applications). You can run this program from JIT Scheduler task to terminate processes automatically. Command line syntax is the following :

     "C:\Program Files\JIT\kill.exe" <progname>

     "C:\Program Files\JIT\kill.exe" /f <progname>

<progname> is the name of program to be killed. It can be the exact name of executable (e.g. notepad.exe, explorer.exe etc.) or a wildcard with * - character (e.g. *, ms*, ... ).

There are two methods of termination : "Kill" and "Quit". Killing terminates process immediately, but the program is being killed can have an unsaved information, which would be lost. "Quit" method is sending a special message to the program. Sometimes "Quit" method doesn't work properly because the reaction depends of application is being terminated and it's state. Specify /f parameter to use "Kill" method.

WARNING: Be careful with the Process Killer ! Process is being killed can have an unsaved information, which can be lost. Killing some programs can greatly damage information on your Hard Drive.