A B C D E F H I J K L M N O P R S T U W

A

arglist - Variable in class Kernel.Launcher

The list of arguments to this command.

B

BLOCK_SIZE - Static variable in class Disk

The size of a disk block in bytes.

Boot - class Boot.

A bootstrap program for the MiniKernel.

Boot() - Constructor for class Boot

beginRead(int, byte[]) - Method in class Disk

Starts a new read operation.

beginWrite(int, byte[]) - Method in class Disk

Starts a new write operation.

br - Static variable in class Kernel

buffer - Variable in class Disk

Memory buffer to/from which current I/O operation is transferring.

busy - Variable in class Disk

An indication of whether an I/O operation is currently in progress.

C

Count - class Count.

A very tiny example MiniKernel program.

Count() - Constructor for class Count

cacheSize - Static variable in class Kernel

The size of the disk cache

currentBlock - Variable in class Disk

Current location of the read/write head

D

DISK_SIZE - Variable in class Disk

Total size of this disk, in blocks.

Disk - class Disk.

A software simulation of a Disk.

Disk(int) - Constructor for class Disk

Creates a new Disk.

Disk.DiskException - exception Disk.DiskException.

The exception thrown when an illegal operation is attempted on the disk.

Disk.DiskException(String) - Constructor for class Disk.DiskException

data - Variable in class Disk

The data stored on the disk

delay(int) - Method in class Disk

Sleeps for a while to simulate the delay in seeking and transferring data.

delete() - Method in class Kernel.Launcher

Removes this Launcher from the set of all active Launchers.

disk - Static variable in class Kernel

The disk to be used

doExec(String, String[]) - Static method in class Kernel

Loads a program and runs it in the background.

doExecAndWait(String, String[]) - Static method in class Kernel

Loads a program and runs it.

doInput(StringBuffer) - Static method in class Kernel

Reads a line from the console into a StringBuffer.

doJoin(int) - Static method in class Kernel

Waits for a program previous started by doExec to terminate.

doOutput(String) - Static method in class Kernel

Displays a message on the console.

doPowerOn(int, Object, Object) - Static method in class Kernel

Performs the actions associated with a POWER_ON interrupt.

doShutdown() - Static method in class Kernel

Does any "shutdown" activities required after all activities started by a POWER_ON interrupt have completed.

E

ERROR_BAD_ARGUMENT - Static variable in class Kernel

An error code indicating that one of the system call parameters made no sense.

ERROR_BAD_COMMAND - Static variable in class Kernel

An error code indicating some unspecified problem running the class passed SYSCALL_EXEC.

ERROR_END_OF_FILE - Static variable in class Kernel

An error code indicating that end of file was reached.

ERROR_IN_CHILD - Static variable in class Kernel

An error code indicating that a child program caused an exception and crashed.

ERROR_IO - Static variable in class Kernel

An error code indicating that somthing went wrong during an I/O operation.

ERROR_NO_CLASS - Static variable in class Kernel

An error code indicating that the class name passed to SYSCALL_EXEC could not be found.

ERROR_NO_MAIN - Static variable in class Kernel

An error code indicating that the class name passed to SYSCALL_EXEC named a class with no appropriate main() method.

ERROR_NO_SUCH_PROCESS - Static variable in class Kernel

An error code indicating an attempt to join with a non-existant process

ERROR_OUT_OF_RANGE - Static variable in class Kernel

An error code indicating that one parameter was too big or too small

errorMessage - Static variable in class Library

A table of error messages corresponding to Kernel error return codes.

exec(String, String[]) - Static method in class Library

Performs SYSCALL_EXEC.

F

finishOperation() - Method in class Disk

Indicates to the CPU that the current operation has completed.

flush() - Method in class Disk

Saves the contents of this Disk.

H

help - Static variable in class Shell

Help message, one line per element.

I

INTERRUPT_DISK - Static variable in class Kernel

An interrupt kind indicating that a disk caused the interrupt.

INTERRUPT_POWER_ON - Static variable in class Kernel

An interrupt kind indicating that the system just started.

INTERRUPT_USER - Static variable in class Kernel

An interrupt kind indicating that a user program caused the interrupt.

input(StringBuffer) - Static method in class Library

Performs SYSCALL_INPUT.

interrupt(int, int, int, Object, Object, byte[]) - Static method in class Kernel

This is the only entry into the kernel.

isWriting - Variable in class Disk

An indication whether the current I/O operation is a write operation.

J

join(int) - Static method in class Library

Performs SYSCALL_JOIN.

joinAll() - Static method in class Kernel.Launcher

Waits for all existing Launchers to complete.

joinOne(int) - Static method in class Kernel.Launcher

Waits for a particular Launcher to complete.

K

Kernel - class Kernel.

A simple kernel simulation.

Kernel() - Constructor for class Kernel

Kernel.Launcher - class Kernel.Launcher.

A Launcher instance represents one atomic command being run by the Kernel.

Kernel.Launcher(String, String[]) - Constructor for class Kernel.Launcher

Creates a new Launcher for a program.

L

Library - class Library.

Convenience calls for using the Kernel.

Library() - Constructor for class Library

This private constructor ensures that no instances of Library are ever created.

M

main(String[]) - Static method in class Boot

The main program.

main(String[]) - Static method in class Count

The main program.

main(String[]) - Static method in class Shell

The main program.

method - Variable in class Kernel.Launcher

The method being run by this command.

N

nextpid - Static variable in class Kernel.Launcher

Source of unique ids for Launcher instances.

O

output(String) - Static method in class Library

Performs SYSCALL_OUTPUT.

P

pid - Variable in class Kernel.Launcher

The process id of this command.

pidMap - Static variable in class Kernel.Launcher

Mapping of process ids (encoded as Integers) to Launcher instances.

pl(Object) - Static method in class Boot

Prints a message.

R

readCount - Variable in class Disk

A count of read operations performed, for statistics.

requestQueued - Variable in class Disk

A flag set by beginRead or beginWrite to indicate that a request has been submitted.

returnCode - Variable in class Kernel.Launcher

Return code returned by this command (0 if the command has not yet completed.

run() - Method in class Disk

This method simulates the internal microprocessor of the disk controler.

run() - Method in class Kernel.Launcher

Main loop of the Launcher

runCommandLine(String) - Static method in class Shell

Parses and runs one command line.

S

SYSCALL_EXEC - Static variable in class Kernel

System call to execute a new program.

SYSCALL_INPUT - Static variable in class Kernel

System call to read text from the console.

SYSCALL_JOIN - Static variable in class Kernel

System call to wait for a process to terminate.

SYSCALL_OUTPUT - Static variable in class Kernel

System call to output text on the console.

Shell - class Shell.

A simple command-line shell for the MiniKernel.

Shell() - Constructor for class Shell

T

targetBlock - Variable in class Disk

The block number to be read/written by the current operation.

U

usage() - Static method in class Boot

Prints a help message and exits.

W

waitForRequest() - Method in class Disk

Waits for a call to beginRead or beginWrite.

writeCount - Variable in class Disk

A count of write operations performed, for statistics.

A B C D E F H I J K L M N O P R S T U W