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

A

acquire() - Method in class nachos.threads.Lock

Atomically acquire this lock.

acquire(KThread) - Method in class nachos.threads.PriorityScheduler.PriorityQueue

acquire(PriorityScheduler.PriorityQueue) - Method in class nachos.threads.PriorityScheduler.ThreadState

Called when the associated thread has acquired access to whatever is guarded by waitQueue.

acquire(KThread) - Method in class nachos.threads.ThreadQueue

Notify this thread queue that a thread has received access, without going through request() and nextThread().

add(Object) - Method in class nachos.threads.SynchList

Add the specified object to the end of the queue.

addExitNotificationHandler(Runnable) - Method in class nachos.security.Privilege

Add an exit() notification handler.

addRider(RiderInterface, int, int[]) - Method in class nachos.machine.ElevatorBank

Add a rider to the simulation.

AdultRideToMolokai() - Method in class nachos.ag.BoatGrader

AdultRideToOahu() - Method in class nachos.ag.BoatGrader

AdultRowToMolokai() - Method in class nachos.ag.BoatGrader

AdultRowToOahu() - Method in class nachos.ag.BoatGrader

advancePC() - Method in class nachos.machine.Processor

Advance the PC to the next instruction.

Alarm - Class in nachos.threads

Uses the hardware timer to provide preemption, and to allow threads to sleep until a certain time.

Alarm() - Constructor for class nachos.threads.Alarm

Allocate a new Alarm.

alarm - Static variable in class nachos.threads.ThreadedKernel

Globally accessible reference to the alarm.

ArrayFile - Class in nachos.machine

A read-only OpenFile backed by a byte array.

ArrayFile(byte[]) - Constructor for class nachos.machine.ArrayFile

Allocate a new ArrayFile.

assertNotReached() - Static method in class nachos.machine.Lib

Asserts that this call is never made.

assertNotReached(String) - Static method in class nachos.machine.Lib

Asserts that this call is never made, with the specified error messsage.

assertTrue(boolean) - Static method in class nachos.machine.Lib

Asserts that expression is true.

assertTrue(boolean, String) - Static method in class nachos.machine.Lib

Asserts that expression is true.

associateThread(KThread) - Method in interface nachos.security.Privilege.TCBPrivilege

Associate the current TCB with the specified KThread.

authorizeDestroy(KThread) - Method in interface nachos.security.Privilege.TCBPrivilege

Authorize the TCB associated with the specified thread to be destroyed.

AutoGrader - Class in nachos.ag

The default autograder.

AutoGrader() - Constructor for class nachos.ag.AutoGrader

Allocate a new autograder.

autoGrader() - Static method in class nachos.machine.Machine

Return the autograder.

B

bank() - Static method in class nachos.machine.Machine

Return the hardware elevator bank.

begin(int, int, BoatGrader) - Static method in class nachos.threads.Boat

Boat - Class in nachos.threads

Boat() - Constructor for class nachos.threads.Boat

BoatGrader - Class in nachos.ag

BoatGrader() - Constructor for class nachos.ag.BoatGrader

bytesFromInt(byte[], int, int) - Static method in class nachos.machine.Lib

Convert an int into its little-endian byte string representation.

bytesFromInt(int) - Static method in class nachos.machine.Lib

Convert an int into its little-endian byte string representation, and return an array containing it.

bytesFromInt(byte[], int, int, int) - Static method in class nachos.machine.Lib

Convert an int into a little-endian byte string representation of the specified length.

bytesFromShort(byte[], int, short) - Static method in class nachos.machine.Lib

Convert a short into its little-endian byte string representation.

bytesToInt(byte[], int) - Static method in class nachos.machine.Lib

Convert to an int from its little-endian byte string representation.

bytesToInt(byte[], int, int) - Static method in class nachos.machine.Lib

Convert to an int from a little-endian byte string representation of the specified length.

bytesToShort(byte[], int) - Static method in class nachos.machine.Lib

Convert to a short from its little-endian byte string representation.

bytesToString(byte[], int, int) - Static method in class nachos.machine.Lib

Convert to a string from a possibly null-terminated array of bytes.

bytesToUnsignedShort(byte[], int) - Static method in class nachos.machine.Lib

Convert to an unsigned short from its little-endian byte string representation.

C

canReceivePacket(Privilege) - Method in class nachos.ag.AutoGrader

Request permission to receive a packet.

canSendPacket(Privilege) - Method in class nachos.ag.AutoGrader

Request permission to send a packet.

checkConstructor(Class, Class[]) - Static method in class nachos.machine.Lib

Verifies that the specified class is public and not abstract, and that a constructor with the specified signature exists and is public.

checkDerivation(Class, Class) - Static method in class nachos.machine.Lib

Verify that the specified class extends or implements the specified superclass.

checkField(Class, String, Class) - Static method in class nachos.machine.Lib

Verifies that the specified class is public, and that a non-static field with the specified name and type exists, is public, and is not final.

checkMethod(Class, String, Class[], Class) - Static method in class nachos.machine.Lib

Verifies that the specified class is public, and that a non-static method with the specified name and signature exists, is public, and returns the specified type.

checkPermission(Permission) - Method in class nachos.security.NachosSecurityManager

Check the specified permission.

checkStaticField(Class, String, Class) - Static method in class nachos.machine.Lib

Verifies that the specified class is public, and that a static field with the specified name and type exists and is public.

checkStaticMethod(Class, String, Class[], Class) - Static method in class nachos.machine.Lib

Verifies that the specified class is public, and that a static method with the specified name and signature exists, is public, and returns the specified type.

ChildRideToMolokai() - Method in class nachos.ag.BoatGrader

ChildRideToOahu() - Method in class nachos.ag.BoatGrader

ChildRowToMolokai() - Method in class nachos.ag.BoatGrader

BoatGrader consists of functions to be called to show that your solution is properly synchronized.

ChildRowToOahu() - Method in class nachos.ag.BoatGrader

cloneFile(OpenFile) - Static method in class nachos.machine.Lib

Take a read-only snapshot of a file.

close() - Method in class nachos.machine.ArrayFile

close() - Method in class nachos.machine.Coff

Close the executable file and release any resources allocated by this loader.

close() - Method in class nachos.machine.OpenFile

Close this file and release any associated system resources.

closeDoors(int) - Method in interface nachos.machine.ElevatorControls

Close an elevator's doors.

Coff - Class in nachos.machine

A COFF (common object file format) loader.

Coff() - Constructor for class nachos.machine.Coff

Allocate a new Coff object.

Coff(OpenFile) - Constructor for class nachos.machine.Coff

Load the COFF executable in the specified file.

coff - Variable in class nachos.machine.CoffSection

The COFF object to which this section belongs.

coff - Variable in class nachos.userprog.UserProcess

The program being run by this process.

CoffSection - Class in nachos.machine

A CoffSection manages a single section within a COFF executable.

CoffSection(Coff, String, boolean, boolean, int, int) - Constructor for class nachos.machine.CoffSection

Allocate a new COFF section with the specified parameters.

CoffSection(OpenFile, Coff, int) - Constructor for class nachos.machine.CoffSection

Load a COFF section from an executable.

Communicator - Class in nachos.threads

A communicator allows threads to synchronously exchange 32-bit messages.

Communicator() - Constructor for class nachos.threads.Communicator

Allocate a new communicator.

compareTo(Object) - Method in class nachos.threads.KThread

Deterministically and consistently compare this thread to another thread.

Condition - Class in nachos.threads

An implementation of condition variables built upon semaphores.

Condition(Lock) - Constructor for class nachos.threads.Condition

Allocate a new condition variable.

Condition2 - Class in nachos.threads

An implementation of condition variables that disables interrupt()s for synchronization.

Condition2(Lock) - Constructor for class nachos.threads.Condition2

Allocate a new condition variable.

Config - Class in nachos.machine

Provides routines to access the Nachos configuration.

Config() - Constructor for class nachos.machine.Config

console() - Static method in class nachos.machine.Machine

Return the hardware console.

console - Static variable in class nachos.userprog.UserKernel

Globally accessible reference to the synchronized console.

ConsoleTime - Static variable in class nachos.machine.Stats

The amount of simulated time required for the console to handle a character.

constructObject(String) - Static method in class nachos.machine.Lib

Create and return a new instance of the named class, using the constructor that takes no arguments.

contents - Variable in class nachos.machine.Packet

The contents of this packet, excluding the link-layer header.

contents - Variable in class nachos.network.MailMessage

The contents of this message, excluding the mail message header.

contextSwitch() - Method in class nachos.machine.TCB

Context switch between the current TCB and this TCB.

createLoader(OpenFile) - Method in class nachos.ag.AutoGrader

Notify the autograder that a COFF loader is being constructed for the specified file.

currentProcess() - Static method in class nachos.userprog.UserKernel

Returns the current process.

currentTCB() - Static method in class nachos.machine.TCB

Return the TCB of the currently running thread.

currentThread() - Static method in class nachos.threads.KThread

Get the current thread.

D

debug(char, String) - Static method in class nachos.machine.Lib

Print message if flag was enabled on the command line.

decreasePriority() - Method in class nachos.threads.PriorityScheduler

decreasePriority() - Method in class nachos.threads.Scheduler

If possible, lower the priority of the current thread user in some scheduler-dependent way, preferably by the same amount as would a call to increasePriority().

destroy() - Method in class nachos.machine.TCB

Destroy this TCB.

die() - Static method in class nachos.machine.TCB

Destroy all TCBs and exit Nachos.

dirDown - Static variable in class nachos.machine.ElevatorBank

Indicates an elevator intends to move down.

dirDown - Static variable in interface nachos.machine.ElevatorControllerInterface

Indicates an elevator intends to move down.

dirDown - Static variable in interface nachos.machine.RiderInterface

Indicates an elevator intends to move down.

direction - Variable in class nachos.machine.RiderEvent

The direction display of the elevator (neither if not applicable).

dirNeither - Static variable in class nachos.machine.ElevatorBank

Indicates an elevator intends not to move.

dirNeither - Static variable in interface nachos.machine.ElevatorControllerInterface

Indicates an elevator intends not to move.

dirNeither - Static variable in interface nachos.machine.RiderInterface

Indicates an elevator intends not to move.

dirty - Variable in class nachos.machine.TranslationEntry

This flag is set to true every time the page is written by a user program.

dirUp - Static variable in class nachos.machine.ElevatorBank

Indicates an elevator intends to move up.

dirUp - Static variable in interface nachos.machine.ElevatorControllerInterface

Indicates an elevator intends to move up.

dirUp - Static variable in interface nachos.machine.RiderInterface

Indicates an elevator intends to move up.

disable() - Method in class nachos.machine.Interrupt

Disable interrupts and return the old interrupt state.

disabled() - Method in class nachos.machine.Interrupt

Tests whether interrupts are disabled.

divRoundUp(int, int) - Static method in class nachos.machine.Lib

Divide two non-negative integers, round the quotient up to the nearest integer, and return it.

doPrivileged(Runnable) - Method in class nachos.security.Privilege

Perform the specified action with privilege.

doPrivileged(PrivilegedAction) - Method in class nachos.security.Privilege

Perform the specified PrivilegedAction with privilege.

doPrivileged(PrivilegedExceptionAction) - Method in class nachos.security.Privilege

Perform the specified PrivilegedExceptionAction with privilege.

dstLink - Variable in class nachos.machine.Packet

The address of the destination link of this packet.

dstPort - Variable in class nachos.network.MailMessage

The port used by this message on the destination machine.

E

elevator - Variable in class nachos.machine.ElevatorEvent

The elevator pertaining to the event, or -1 if not applicable.

elevator - Variable in class nachos.machine.RiderEvent

The elevator pertaining to the event, or -1 if not applicable.

ElevatorBank - Class in nachos.machine

A bank of elevators.

ElevatorBank(Privilege) - Constructor for class nachos.machine.ElevatorBank

Allocate a new elevator bank.

ElevatorController - Class in nachos.threads

A controller for all the elevators in an elevator bank.

ElevatorController() - Constructor for class nachos.threads.ElevatorController

Allocate a new elevator controller.

ElevatorControllerInterface - Interface in nachos.machine

A controller for all the elevators in an elevator bank.

ElevatorControls - Interface in nachos.machine

A set of controls that can be used by an elevator controller.

ElevatorEvent - Class in nachos.machine

An event that affects elevator software.

ElevatorEvent(int, int, int) - Constructor for class nachos.machine.ElevatorEvent

ElevatorGui - Class in nachos.machine

A graphical visualization for the ElevatorBank class.

ElevatorTest - Class in nachos.machine

Tests the ElevatorBank module, using a single elevator and a single rider.

ElevatorTest() - Constructor for class nachos.machine.ElevatorTest

Allocate a new ElevatorTest object.

ElevatorTicks - Static variable in class nachos.machine.Stats

The amount of simulated time required for an elevator to move a floor.

enable() - Method in class nachos.machine.Interrupt

Enable interrupts.

enable() - Method in class nachos.security.NachosSecurityManager

Install this security manager.

enabled() - Method in class nachos.machine.Interrupt

Tests whether interrupts are enabled.

enableDebugFlags(String) - Static method in class nachos.machine.Lib

Enable all the debug flags in flagsString.

enableGui() - Method in class nachos.machine.ElevatorBank

Create a GUI for this elevator bank.

enterElevator(int) - Method in interface nachos.machine.RiderControls

Enter an elevator.

entryPoint - Variable in class nachos.machine.Coff

The virtual address of the first instruction of the program.

event - Variable in class nachos.machine.ElevatorEvent

The event identifier.

event - Variable in class nachos.machine.RiderEvent

The event identifier.

eventDirectionChanged - Static variable in class nachos.machine.RiderEvent

An elevator's doors were open and its direction display changed.

eventDoorsClosed - Static variable in class nachos.machine.RiderEvent

An elevator's doors have closed.

eventDoorsOpened - Static variable in class nachos.machine.RiderEvent

An elevator's doors have opened.

eventDownButtonPressed - Static variable in class nachos.machine.ElevatorEvent

A down button was pressed.

eventElevatorArrived - Static variable in class nachos.machine.ElevatorEvent

An elevator has arrived and stopped at its destination floor.

eventFloorButtonPressed - Static variable in class nachos.machine.ElevatorEvent

A floor button was pressed inside an elevator.

eventRidersDone - Static variable in class nachos.machine.ElevatorEvent

All riders have finished; the elevator controller should terminate.

eventUpButtonPressed - Static variable in class nachos.machine.ElevatorEvent

An up button was pressed.

exceptionAddressError - Static variable in class nachos.machine.Processor

Caused by an access to a misaligned virtual address.

exceptionBusError - Static variable in class nachos.machine.Processor

Caused by an access to an invalid physical page.

exceptionHandler(Privilege) - Method in class nachos.ag.AutoGrader

Notify the autograder that a user program executed a syscall instruction.

exceptionHandler() - Method in class nachos.userprog.UserKernel

The exception handler.

exceptionIllegalInstruction - Static variable in class nachos.machine.Processor

Caused by an attempt to execute an illegal instruction.

exceptionNames - Static variable in class nachos.machine.Processor

The names of the CPU exceptions.

exceptionOverflow - Static variable in class nachos.machine.Processor

Caused by an overflow by a signed operation.

exceptionPageFault - Static variable in class nachos.machine.Processor

Caused by an access to an invalid virtual page.

exceptionReadOnly - Static variable in class nachos.machine.Processor

Caused by a write access to a read-only virtual page.

exceptionSyscall - Static variable in class nachos.machine.Processor

Caused by a syscall instruction.

exceptionTLBMiss - Static variable in class nachos.machine.Processor

Caused by an access to a virtual page not mapped by any TLB entry.

executable - Variable in class nachos.machine.CoffSection

True if this section contains code.

execute(String, String[]) - Method in class nachos.userprog.UserProcess

Execute the specified program with the specified arguments.

exit(int) - Method in class nachos.security.Privilege

Exit Nachos with the specified status.

exitElevator(int) - Method in interface nachos.machine.RiderControls

Exit the elevator.

extend(int, int, int) - Static method in class nachos.machine.Lib

Mask out and shift a bit substring; then sign extend the substring.

extract(int, int, int) - Static method in class nachos.machine.Lib

Mask out and shift a bit substring.

extract(long, int, int) - Static method in class nachos.machine.Lib

Mask out and shift a bit substring.

F

FileSystem - Interface in nachos.machine

A file system that allows the user to create, open, and delete files.

fileSystem - Static variable in class nachos.threads.ThreadedKernel

Globally accessible reference to the file system.

finish() - Method in interface nachos.machine.ElevatorControls

Call when the elevator controller is finished.

finish() - Method in interface nachos.machine.RiderControls

Call when the rider is finished.

finish() - Static method in class nachos.threads.KThread

Finish the current thread and schedule it to be destroyed when it is safe to do so.

finishingCurrentThread() - Method in class nachos.ag.AutoGrader

Notify the autograder that the current thread has finished.

firstVPN - Variable in class nachos.machine.CoffSection

The first virtual page number used by this section.

floor - Variable in class nachos.machine.ElevatorEvent

The floor pertaining to the event, or -1 if not applicable.

floor - Variable in class nachos.machine.RiderEvent

The floor pertaining to the event, or -1 if not applicable.

flushPipe() - Method in interface nachos.security.Privilege.ProcessorPrivilege

Flush the processor pipeline in preparation for switching to kernel mode.

fork() - Method in class nachos.threads.KThread

Causes this thread to begin execution.

G

getBoolean(String) - Static method in class nachos.machine.Config

Get the value of a boolean key in nachos.conf.

getBoolean(String, boolean) - Static method in class nachos.machine.Config

Get the value of a boolean key in nachos.conf, returning the specified default if the key does not exist.

getCoff() - Method in class nachos.machine.CoffSection

Return the COFF object used to load this executable instance.

getCommandLineArguments() - Static method in class nachos.machine.Machine

Return an array containing all command line arguments.

getDirectionDisplay(int) - Method in interface nachos.machine.RiderControls

Return the indicated direction of the specified elevator, set by ElevatorControls.setDirectionDisplay().

getDouble(String) - Static method in class nachos.machine.Config

Get the value of a double key in nachos.conf.

getDouble(String, double) - Static method in class nachos.machine.Config

Get the value of a double key in nachos.conf, returning the specified default if the key does not exist.

getEffectivePriority(KThread) - Method in class nachos.threads.PriorityScheduler

getEffectivePriority() - Method in class nachos.threads.PriorityScheduler.ThreadState

Return the effective priority of the associated thread.

getEffectivePriority(KThread) - Method in class nachos.threads.Scheduler

Get the effective priority of the specified thread.

getEffectivePriority() - Method in class nachos.threads.Scheduler

Get the effective priority of the current thread.

getEntryPoint() - Method in class nachos.machine.Coff

Return the program entry point.

getExceptionHandler() - Method in class nachos.machine.Processor

Get the exception handler, set by the last call to setExceptionHandler().

getFileSystem() - Method in class nachos.machine.OpenFile

Get the file system to which this file belongs.

getFirstVPN() - Method in class nachos.machine.CoffSection

Return the first virtual page number used by this section.

getFloor(int) - Method in interface nachos.machine.ElevatorControls

Return the current location of the elevator.

getFloor() - Method in interface nachos.machine.RiderControls

Return the current location of the rider.

getFloors() - Method in interface nachos.machine.RiderControls

Return an array specifying the sequence of floors at which this rider has successfully exited an elevator.

getInteger(String) - Static method in class nachos.machine.Config

Get the value of an integer key in nachos.conf.

getInteger(String, int) - Static method in class nachos.machine.Config

Get the value of an integer key in nachos.conf, returning the specified default if the key does not exist.

getLength() - Method in class nachos.machine.CoffSection

Return the length of this section in pages.

getLinkAddress() - Method in class nachos.machine.NetworkLink

Returns the address of this network link.

getMemory() - Method in class nachos.machine.Processor

Return a reference to the physical memory array.

getName() - Method in class nachos.machine.CoffSection

Return the name of this section.

getName() - Method in class nachos.machine.OpenFile

Get the name of this open file.

getName() - Method in class nachos.threads.KThread

Get the name of this thread.

getNextEvent() - Method in interface nachos.machine.ElevatorControls

Return the next event in the event queue.

getNextEvent() - Method in interface nachos.machine.RiderControls

Return the next event in the event queue.

getNumElevators() - Method in interface nachos.machine.ElevatorControls

Return the number of elevators in the elevator bank.

getNumElevators() - Method in interface nachos.machine.RiderControls

Return the number of elevators in the elevator bank.

getNumFloors() - Method in interface nachos.machine.ElevatorControls

Return the number of floors in the elevator bank.

getNumFloors() - Method in interface nachos.machine.RiderControls

Return the number of floors in the elevator bank.

getNumPhysPages() - Method in class nachos.machine.Processor

Return the number of pages of physical memory attached to this simulated processor.

getNumSections() - Method in class nachos.machine.Coff

Return the number of sections in the executable.

getPageTable() - Method in class nachos.machine.Processor

Get the current page table, set by the last call to setPageTable().

getPriority(KThread) - Method in class nachos.threads.PriorityScheduler

getPriority() - Method in class nachos.threads.PriorityScheduler.ThreadState

Return the priority of the associated thread.

getPriority(KThread) - Method in class nachos.threads.Scheduler

Get the priority of the specified thread.

getPriority() - Method in class nachos.threads.Scheduler

Get the priority of the current thread.

getPrivilege() - Method in class nachos.security.NachosSecurityManager

Return a privilege object for this security manager.

getProcessClassName() - Static method in class nachos.machine.Machine

Return the name of the process class that the kernel should use.

getSection(int) - Method in class nachos.machine.Coff

Return an object that can be used to access the specified section.

getShellProgramName() - Static method in class nachos.machine.Machine

Return the name of the shell program that a user-programming kernel must run.

getString(String) - Static method in class nachos.machine.Config

Get the value of a key in nachos.conf.

getString(String, String) - Static method in class nachos.machine.Config

Get the value of a key in nachos.conf, returning the specified default if the key does not exist.

getThreadGroup() - Method in class nachos.security.NachosSecurityManager

Called by the java.lang.Thread constructor to determine a thread group for a child thread of the current thread.

getThreadState(KThread) - Method in class nachos.threads.PriorityScheduler

Return the scheduling state of the specified thread.

getTime() - Method in class nachos.machine.Timer

Get the current time.

getTLBSize() - Method in class nachos.machine.Processor

Return the number of entries in this processor's TLB.

givePrivilege(Privilege) - Static method in class nachos.machine.TCB

Give the TCB class the necessary privilege to create threads.

H

halt() - Static method in class nachos.machine.Machine

Print stats, and terminate Nachos.

handleException(int) - Method in class nachos.userprog.UserProcess

Handle a user exception.

handleException(int) - Method in class nachos.vm.VMProcess

Handle a user exception.

handleSyscall(int, int, int, int, int) - Method in class nachos.network.NetProcess

Handle a syscall exception.

handleSyscall(int, int, int, int, int) - Method in class nachos.userprog.UserProcess

Handle a syscall exception.

hasTLB() - Method in class nachos.machine.Processor

Test whether this processor uses a software-managed TLB, or single-level paging.

headerLength - Static variable in class nachos.machine.CoffSection

The length of a COFF section header.

headerLength - Static variable in class nachos.machine.Packet

The number of bytes in a link-layer packet header.

headerLength - Static variable in class nachos.network.MailMessage

The number of bytes in a mail header.

I

in() - Method in class nachos.machine.StandardConsole

Attempt to read a byte from the object backing this console.

increasePriority() - Method in class nachos.threads.PriorityScheduler

increasePriority() - Method in class nachos.threads.Scheduler

If possible, raise the priority of the current thread in some scheduler-dependent way.

init(int, int, ElevatorControllerInterface) - Method in class nachos.machine.ElevatorBank

Initialize this elevator bank with the specified number of elevators and the specified number of floors.

initialize(ElevatorControls) - Method in interface nachos.machine.ElevatorControllerInterface

Initialize this elevator controller.

initialize(String[]) - Method in class nachos.machine.Kernel

Initialize this kernel.

initialize(RiderControls, int[]) - Method in interface nachos.machine.RiderInterface

Initialize this rider.

initialize(String[]) - Method in class nachos.network.NetKernel

Initialize this kernel.

initialize(ElevatorControls) - Method in class nachos.threads.ElevatorController

Initialize this elevator controller.

initialize(RiderControls, int[]) - Method in class nachos.threads.Rider

Initialize this rider.

initialize(String[]) - Method in class nachos.threads.ThreadedKernel

Initialize this kernel.

initialize(String[]) - Method in class nachos.userprog.UserKernel

Initialize this kernel.

initialize(String[]) - Method in class nachos.vm.VMKernel

Initialize this kernel.

initialized - Variable in class nachos.machine.CoffSection

True if this section contains initialized data.

initRegisters() - Method in class nachos.userprog.UserProcess

Initialize the processor's registers in preparation for running the program loaded into this process.

Interrupt - Class in nachos.machine

The Interrupt class emulates low-level interrupt hardware.

Interrupt(Privilege) - Constructor for class nachos.machine.Interrupt

Allocate a new interrupt controller.

interrupt() - Static method in class nachos.machine.Machine

Return the hardware interrupt manager.

interrupt - Variable in class nachos.security.Privilege

Provides access to some private Interrupt methods.

invokeExitNotificationHandlers() - Method in class nachos.security.Privilege

Invoke each exit() notification handler added by addExitNotificationHandler().

isHeldByCurrentThread() - Method in class nachos.threads.Lock

Test if the current thread holds this lock.

isInitialzed() - Method in class nachos.machine.CoffSection

Test whether this section is initialized.

isNachosThread() - Static method in class nachos.machine.TCB

Test if the current JVM thread belongs to a Nachos TCB.

isReadOnly() - Method in class nachos.machine.CoffSection

Test whether this section is read-only.

J

join() - Method in class nachos.threads.KThread

Waits for this thread to finish.

K

Kernel - Class in nachos.machine

An OS kernel.

Kernel() - Constructor for class nachos.machine.Kernel

Allocate a new kernel.

kernel - Static variable in class nachos.machine.Kernel

Globally accessible reference to the kernel.

KernelTick - Static variable in class nachos.machine.Stats

The amount to advance simulated time after each interrupt enable.

kernelTicks - Variable in class nachos.machine.Stats

The total amount of simulated time that Nachos has spent in kernel mode.

KThread - Class in nachos.threads

A KThread is a thread that can be used to execute Nachos kernel code.

KThread() - Constructor for class nachos.threads.KThread

Allocate a new KThread.

KThread(Runnable) - Constructor for class nachos.threads.KThread

Allocate a new KThread.

L

length() - Method in class nachos.machine.ArrayFile

length() - Method in class nachos.machine.OpenFile

Get the length of this file.

Lib - Class in nachos.machine

Provides miscellaneous library routines.

linkAddressLimit - Static variable in class nachos.machine.Packet

The upper limit on Nachos link addresses.

listen() - Method in class nachos.threads.Communicator

Wait for a thread to speak through this communicator, and then return the word that thread passed to speak().

load(String) - Static method in class nachos.machine.Config

Load configuration information from the specified file.

loadClass(String) - Static method in class nachos.machine.Lib

Load and return the named class, terminating Nachos on any error.

loadFile(OpenFile) - Static method in class nachos.machine.Lib

Load an entire file into memory.

loadPage(int, int) - Method in class nachos.machine.CoffSection

Load a page from this segment into physical memory.

loadSections() - Method in class nachos.userprog.UserProcess

Allocates memory for this process, and loads the COFF sections into memory.

loadSections() - Method in class nachos.vm.VMProcess

Initializes page tables for this process so that the executable can be demand-paged.

Lock - Class in nachos.threads

A Lock is a synchronization primitive that has two states, busy and free.

Lock() - Constructor for class nachos.threads.Lock

Allocate a new lock.

LotteryScheduler - Class in nachos.threads

A scheduler that chooses threads using a lottery.

LotteryScheduler() - Constructor for class nachos.threads.LotteryScheduler

Allocate a new lottery scheduler.

M

Machine - Class in nachos.machine

The master class of the simulated machine.

machine - Variable in class nachos.security.Privilege

Provides access to some private Machine methods.

MailMessage - Class in nachos.network

A mail message.

MailMessage(int, int, int, int, byte[]) - Constructor for class nachos.network.MailMessage

Allocate a new mail message to be sent, using the specified parameters.

MailMessage(Packet) - Constructor for class nachos.network.MailMessage

Allocate a new mail message using the specified packet from the network.

main(String[]) - Static method in class nachos.machine.Machine

Nachos main entry point.

makeAddress(int, int) - Static method in class nachos.machine.Processor

Concatenate a page number and an offset into an address.

MalformedPacketException - Exception in nachos.machine

Thrown when a malformed packet is processed.

MalformedPacketException() - Constructor for exception nachos.machine.MalformedPacketException

Allocate a new MalformedPacketException.

maxContentsLength - Static variable in class nachos.machine.Packet

The maximum number of content bytes (not including the header).

maxContentsLength - Static variable in class nachos.network.MailMessage

Maximum payload (real data) that can be included in a single mesage.

maxPacketLength - Static variable in class nachos.machine.Packet

The maximum length, in bytes, of a packet that can be sent or received on the network.

maxPages - Static variable in class nachos.machine.Processor

Number of pages in a 32-bit address space.

maxThreads - Static variable in class nachos.machine.TCB

The maximum number of started, non-destroyed TCB's that can be in existence.

moveTo(int, int) - Method in interface nachos.machine.ElevatorControls

Move an elevator to another floor.

N

nachos.ag - package nachos.ag

Provides classes that can be used to automatically grade Nachos projects.

nachos.machine - package nachos.machine

Provides classes that implement the Nachos simulated machine.

nachos.network - package nachos.network

Provides classes that allow Nachos processes to communicate over the network.

nachos.security - package nachos.security

Provides classes that can be used to protect the host system from malicious Nachos kernels.

nachos.threads - package nachos.threads

Provides classes that support a multithreaded kernel.

nachos.userprog - package nachos.userprog

Provides classes that allow Nachos to load and execute single-threaded user programs in separate address spaces.

nachos.vm - package nachos.vm

Provides classes that allow Nachos processes to be demand paged, and to use a hardware TLB for address translation.

NachosSecurityManager - Class in nachos.security

Protects the environment from malicious Nachos code.

NachosSecurityManager(File) - Constructor for class nachos.security.NachosSecurityManager

Allocate a new Nachos security manager.

name - Variable in class nachos.machine.CoffSection

The COFF name of this section.

NetKernel - Class in nachos.network

A kernel with network support.

NetKernel() - Constructor for class nachos.network.NetKernel

Allocate a new networking kernel.

NetProcess - Class in nachos.network

A VMProcess that supports networking syscalls.

NetProcess() - Constructor for class nachos.network.NetProcess

Allocate a new process.

networkID - Static variable in class nachos.machine.NetworkLink

The address of the network to which are attached all network links in this JVM.

networkLink() - Static method in class nachos.machine.Machine

Return the network link.

NetworkLink - Class in nachos.machine

A full-duplex network link.

NetworkLink(Privilege) - Constructor for class nachos.machine.NetworkLink

Allocate a new network link.

NetworkTime - Static variable in class nachos.machine.Stats

The amount of simulated time required for the network to handle a packet.

newThreadQueue(boolean) - Method in class nachos.threads.LotteryScheduler

Allocate a new lottery thread queue.

newThreadQueue(boolean) - Method in class nachos.threads.PriorityScheduler

Allocate a new priority thread queue.

newThreadQueue(boolean) - Method in class nachos.threads.RoundRobinScheduler

Allocate a new FIFO thread queue.

newThreadQueue(boolean) - Method in class nachos.threads.Scheduler

Allocate a new thread queue.

newUserProcess() - Static method in class nachos.userprog.UserProcess

Allocate and return a new process of the correct class.

nextThread() - Method in class nachos.threads.PriorityScheduler.PriorityQueue

nextThread() - Method in class nachos.threads.ThreadQueue

Notify this thread queue that another thread can receive access.

numConsoleReads - Variable in class nachos.machine.Stats

The total number of characters Nachos has read from the console.

numConsoleWrites - Variable in class nachos.machine.Stats

The total number of characters Nachos has written to the console.

numDiskReads - Variable in class nachos.machine.Stats

The total number of sectors Nachos has read from the simulated disk.

numDiskWrites - Variable in class nachos.machine.Stats

The total number of sectors Nachos has written to the simulated disk.

numPacketsReceived - Variable in class nachos.machine.Stats

The total number of packets Nachos has received from the network.

numPacketsSent - Variable in class nachos.machine.Stats

The total number of packets Nachos has sent to the network.

numPageFaults - Variable in class nachos.machine.Stats

The total number of page faults that have occurred.

numPages - Variable in class nachos.machine.CoffSection

The number of virtual pages in this section.

numPages - Variable in class nachos.userprog.UserProcess

The number of contiguous pages occupied by the program.

numTLBMisses - Variable in class nachos.machine.Stats

The total number of TLB misses that have occurred.

numUserRegisters - Static variable in class nachos.machine.Processor

The total number of software-accessible CPU registers.

O

offsetFromAddress(int) - Static method in class nachos.machine.Processor

Extract the offset component from an address.

open(String, boolean) - Method in interface nachos.machine.FileSystem

Atomically open a file, optionally creating it if it does not already exist.

open(String, boolean) - Method in class nachos.machine.StubFileSystem

openDoors(int) - Method in interface nachos.machine.ElevatorControls

Open an elevator's doors.

OpenFile - Class in nachos.machine

A file that supports reading, writing, and seeking.

OpenFile(FileSystem, String) - Constructor for class nachos.machine.OpenFile

Allocate a new OpenFile object with the specified name on the specified file system.

OpenFile() - Constructor for class nachos.machine.OpenFile

Allocate a new unnamed OpenFile that is not associated with any file system.

OpenFileWithPosition - Class in nachos.machine

An OpenFile that maintains a current file position.

OpenFileWithPosition(FileSystem, String) - Constructor for class nachos.machine.OpenFileWithPosition

Allocate a new OpenFileWithPosition with the specified name on the specified file system.

OpenFileWithPosition() - Constructor for class nachos.machine.OpenFileWithPosition

Allocate a new unnamed OpenFileWithPosition that is not associated with any file system.

openForReading() - Method in class nachos.userprog.SynchConsole

Return an OpenFile that can be used to read this as a file.

openForWriting() - Method in class nachos.userprog.SynchConsole

Return an OpenFile that can be used to write this as a file.

out(int) - Method in class nachos.machine.StandardConsole

Write a byte to the object backing this console.

P

P() - Method in class nachos.threads.Semaphore

Atomically wait for this semaphore to become non-zero and decrement it.

Packet - Class in nachos.machine

A link-layer packet.

Packet(int, int, byte[]) - Constructor for class nachos.machine.Packet

Allocate a new packet to be sent, using the specified parameters.

Packet(byte[]) - Constructor for class nachos.machine.Packet

Allocate a new packet using the specified array of bytes received from the network.

packet - Variable in class nachos.network.MailMessage

This message, as a packet that can be sent through a network link.

packetBytes - Variable in class nachos.machine.Packet

This packet, as an array of bytes that can be sent on a network.

pageFromAddress(int) - Static method in class nachos.machine.Processor

Extract the page number component from a 32-bit address.

pageSize - Static variable in class nachos.machine.Processor

Size of a page, in bytes.

pageTable - Variable in class nachos.userprog.UserProcess

This process's page table.

pickNextThread() - Method in class nachos.threads.PriorityScheduler.PriorityQueue

Return the next thread that nextThread() would return, without modifying the state of this queue.

portLimit - Static variable in class nachos.network.MailMessage

The upper limit on mail ports.

position - Variable in class nachos.machine.OpenFileWithPosition

The current value of the file pointer.

PostOffice - Class in nachos.network

A collection of message queues, one for each local port.

PostOffice() - Constructor for class nachos.network.PostOffice

Allocate a new post office, using an array of SynchLists.

ppn - Variable in class nachos.machine.TranslationEntry

The physical page number.

pressDirectionButton(boolean) - Method in interface nachos.machine.RiderControls

Press a direction button.

pressDownButton() - Method in interface nachos.machine.RiderControls

Press the down button.

pressFloorButton(int) - Method in interface nachos.machine.RiderControls

Press a floor button.

pressUpButton() - Method in interface nachos.machine.RiderControls

Press the up button.

print() - Method in class nachos.machine.Stats

Print out the statistics in this object.

print() - Method in class nachos.threads.PriorityScheduler.PriorityQueue

print() - Method in class nachos.threads.ThreadQueue

Print out all the threads waiting for access, in no particular order.

priority - Variable in class nachos.threads.PriorityScheduler.ThreadState

The priority of the associated thread.

priorityDefault - Static variable in class nachos.threads.PriorityScheduler

The default priority for a new thread.

priorityMaximum - Static variable in class nachos.threads.PriorityScheduler

The maximum priority that a thread can have.

priorityMinimum - Static variable in class nachos.threads.PriorityScheduler

The minimum priority that a thread can have.

PriorityScheduler - Class in nachos.threads

A scheduler that chooses threads based on their priorities.

PriorityScheduler() - Constructor for class nachos.threads.PriorityScheduler

Allocate a new priority scheduler.

PriorityScheduler.PriorityQueue - Class in nachos.threads

A ThreadQueue that sorts threads by priority.

PriorityScheduler.ThreadState - Class in nachos.threads

The scheduling state of a thread.

PriorityScheduler.ThreadState(KThread) - Constructor for class nachos.threads.PriorityScheduler.ThreadState

Allocate a new ThreadState object and associate it with the specified thread.

Privilege - Class in nachos.security

A capability that allows privileged access to the Nachos machine.

Privilege() - Constructor for class nachos.security.Privilege

Allocate a new Privilege object.

Privilege.InterruptPrivilege - Interface in nachos.security

An interface that provides access to some private Interrupt methods.

Privilege.MachinePrivilege - Interface in nachos.security

An interface that provides access to some private Machine methods.

Privilege.ProcessorPrivilege - Interface in nachos.security

An interface that provides access to some private Processor methods.

Privilege.TCBPrivilege - Interface in nachos.security

An interface that provides access to some private TCB methods.

process - Variable in class nachos.userprog.UThread

The process to which this thread belongs.

processor() - Static method in class nachos.machine.Machine

Return the MIPS processor.

Processor - Class in nachos.machine

The Processor class simulates a MIPS processor that supports a subset of the R3000 instruction set.

Processor(Privilege, int) - Constructor for class nachos.machine.Processor

Allocate a new MIPS processor, with the specified amount of memory.

processor - Variable in class nachos.security.Privilege

Provides access to some private Processor methods.

R

random(int) - Static method in class nachos.machine.Lib

Return a random integer between 0 and range - 1.

random() - Static method in class nachos.machine.Lib

Return a random double between 0.0 (inclusive) and 1.0 (exclusive).

read(int, byte[], int, int) - Method in class nachos.machine.ArrayFile

read(int, byte[], int, int) - Method in class nachos.machine.OpenFile

Read this file starting at the specified position and return the number of bytes successfully read.

read(byte[], int, int) - Method in class nachos.machine.OpenFile

Read this file starting at the current file pointer and return the number of bytes successfully read.

read(byte[], int, int) - Method in class nachos.machine.OpenFileWithPosition

readByte() - Method in interface nachos.machine.SerialConsole

Return the next unsigned byte received (in the range 0 through 255).

readByte() - Method in class nachos.machine.StandardConsole

readByte(boolean) - Method in class nachos.userprog.SynchConsole

Return the next unsigned byte received (in the range 0 through 255).

readOnly - Variable in class nachos.machine.CoffSection

True if this section is read-only.

readOnly - Variable in class nachos.machine.TranslationEntry

If this flag is true, the user pprogram is not allowed to modify the contents of this virtual page.

readRegister(int) - Method in class nachos.machine.Processor

Read and return the contents of the specified CPU register.

readTLBEntry(int) - Method in class nachos.machine.Processor

Returns the specified TLB entry.

readVirtualMemory(int, byte[]) - Method in class nachos.userprog.UserProcess

Transfer data from this process's virtual memory to all of the specified array.

readVirtualMemory(int, byte[], int, int) - Method in class nachos.userprog.UserProcess

Transfer data from this process's virtual memory to the specified array.

readVirtualMemoryString(int, int) - Method in class nachos.userprog.UserProcess

Read a null-terminated string from this process's virtual memory.

ready() - Method in class nachos.threads.KThread

Moves this thread to the ready state and adds this to the scheduler's ready queue.

readyThread(KThread) - Method in class nachos.ag.AutoGrader

Notify the autograder that the specified thread has moved to the ready state.

receive() - Method in class nachos.machine.NetworkLink

Return the next packet received.

receive(int) - Method in class nachos.network.PostOffice

Retrieve a message on the specified port, waiting if necessary.

regA0 - Static variable in class nachos.machine.Processor

Index of argument register 0.

regA1 - Static variable in class nachos.machine.Processor

Index of argument register 1.

regA2 - Static variable in class nachos.machine.Processor

Index of argument register 2.

regA3 - Static variable in class nachos.machine.Processor

Index of argument register 3.

regBadVAddr - Static variable in class nachos.machine.Processor

Index of the exception bad virtual address register.

regCause - Static variable in class nachos.machine.Processor

Index of the exception cause register.

regHi - Static variable in class nachos.machine.Processor

Index of the high register, used for multiplication and division.

regLo - Static variable in class nachos.machine.Processor

Index of the low register, used for multiplication and division.

regNextPC - Static variable in class nachos.machine.Processor

Index of the next program counter register.

regPC - Static variable in class nachos.machine.Processor

Index of the program counter register.

regRA - Static variable in class nachos.machine.Processor

Index of the return address register.

regSP - Static variable in class nachos.machine.Processor

Index of the stack pointer register.

regV0 - Static variable in class nachos.machine.Processor

Index of return value register 0.

regV1 - Static variable in class nachos.machine.Processor

Index of return value register 1.

release() - Method in class nachos.threads.Lock

Atomically release this lock, allowing other threads to acquire it.

remove(String) - Method in interface nachos.machine.FileSystem

Atomically remove an existing file.

remove(String) - Method in class nachos.machine.StubFileSystem

removeFirst() - Method in class nachos.threads.SynchList

Remove an object from the front of the queue, blocking until the queue is non-empty if necessary.

restore(boolean) - Method in class nachos.machine.Interrupt

Restore interrupts to the specified status.

restoreState() - Method in class nachos.threads.KThread

Prepare this thread to be run.

restoreState() - Method in class nachos.userprog.UserProcess

Restore the state of this process after a context switch.

restoreState() - Method in class nachos.userprog.UThread

Restore state before receiving the processor again.

restoreState() - Method in class nachos.vm.VMProcess

Restore the state of this process after a context switch.

Rider - Class in nachos.threads

A single rider.

Rider() - Constructor for class nachos.threads.Rider

Allocate a new rider.

RiderControls - Interface in nachos.machine

A set of controls that can be used by a rider controller.

RiderEvent - Class in nachos.machine

An event that affects rider software.

RiderEvent(int, int, int, int) - Constructor for class nachos.machine.RiderEvent

RiderInterface - Interface in nachos.machine

A single rider.

RotationTime - Static variable in class nachos.machine.Stats

The amount of simulated time required to rotate the disk 360 degrees.

RoundRobinScheduler - Class in nachos.threads

A round-robin scheduler tracks waiting threads in FIFO queues, implemented with linked lists.

RoundRobinScheduler() - Constructor for class nachos.threads.RoundRobinScheduler

Allocate a new round-robin scheduler.

run() - Method in class nachos.machine.ElevatorBank

Run a simulation.

run() - Method in interface nachos.machine.ElevatorControllerInterface

Cause the controller to use the provided controls to receive and process requests from riders.

run() - Method in class nachos.machine.ElevatorTest

Run a test on Machine.bank().

run() - Method in class nachos.machine.Kernel

Begin executing user programs, if applicable.

run() - Method in class nachos.machine.Processor

Start executing instructions at the current PC.

run() - Method in interface nachos.machine.RiderInterface

Cause the rider to use the provided controls to make the stops specified in the constructor.

run() - Method in class nachos.network.NetKernel

Start running user programs.

run() - Method in class nachos.threads.ElevatorController

Cause the controller to use the provided controls to receive and process requests from riders.

run() - Method in class nachos.threads.Rider

Cause the rider to use the provided controls to make the stops specified in the constructor.

run() - Method in class nachos.threads.ThreadedKernel

A threaded kernel does not run user programs, so this method does nothing.

run() - Method in class nachos.userprog.UserKernel

Start running user programs, by creating a process and running a shell program in it.

run() - Method in class nachos.vm.VMKernel

Start running user programs.

runningThread(KThread) - Method in class nachos.ag.AutoGrader

Notify the autograder that the specified thread is now running.

runProcessor(Privilege) - Method in class nachos.ag.AutoGrader

Notify the autograder that Processor.run() was invoked.

S

saveState() - Method in class nachos.threads.KThread

Prepare this thread to give up the processor.

saveState() - Method in class nachos.userprog.UserProcess

Save the state of this process in preparation for a context switch.

saveState() - Method in class nachos.userprog.UThread

Save state before giving up the processor to another thread.

saveState() - Method in class nachos.vm.VMProcess

Save the state of this process in preparation for a context switch.

schedule(long, String, Runnable) - Method in interface nachos.security.Privilege.InterruptPrivilege

Schedule an interrupt to occur at some time in the future.

Scheduler - Class in nachos.threads

Coordinates a group of thread queues of the same kind.

Scheduler() - Constructor for class nachos.threads.Scheduler

Allocate a new scheduler.

scheduler - Static variable in class nachos.threads.ThreadedKernel

Globally accessible reference to the scheduler.

schedulingState - Variable in class nachos.threads.KThread

Additional state used by schedulers.

sections - Variable in class nachos.machine.Coff

The sections in this COFF executable.

seedRandom(long) - Static method in class nachos.machine.Lib

Seed the random number generater.

seek(int) - Method in class nachos.machine.OpenFile

Set the value of the current file pointer.

seek(int) - Method in class nachos.machine.OpenFileWithPosition

SeekTime - Static variable in class nachos.machine.Stats

The amount of simulated time required for the disk to seek.

selfTest() - Static method in class nachos.machine.ElevatorBank

Tests whether this module is working.

selfTest() - Method in class nachos.machine.Kernel

Test that this module works.

selfTest() - Method in class nachos.network.NetKernel

Test the network.

selfTest() - Static method in class nachos.threads.Boat

selfTest() - Static method in class nachos.threads.KThread

Tests whether this module is working.

selfTest() - Static method in class nachos.threads.Semaphore

Test if this module is working.

selfTest() - Static method in class nachos.threads.SynchList

Test that this module is working.

selfTest() - Method in class nachos.threads.ThreadedKernel

Test this kernel.

selfTest() - Method in class nachos.userprog.UserKernel

Test the console device.

selfTest() - Method in class nachos.vm.VMKernel

Test this kernel.

Semaphore - Class in nachos.threads

A Semaphore is a synchronization primitive with an unsigned value.

Semaphore(int) - Constructor for class nachos.threads.Semaphore

Allocate a new semaphore.

send(Packet) - Method in class nachos.machine.NetworkLink

Send another packet.

send(MailMessage) - Method in class nachos.network.PostOffice

Send a message to a mailbox on a remote machine.

SerialConsole - Interface in nachos.machine

A serial console can be used to send and receive characters.

setConsole(SerialConsole) - Method in interface nachos.security.Privilege.MachinePrivilege

Install a hardware console.

setDirectionDisplay(int, int) - Method in interface nachos.machine.ElevatorControls

Set which direction the elevator bank will show for this elevator's display.

setExceptionHandler(Runnable) - Method in class nachos.machine.Processor

Set the exception handler, called whenever a user exception occurs.

setIdleThread(KThread) - Method in class nachos.ag.AutoGrader

Notify the autograder that the specified thread is the idle thread.

setInterruptHandler(Runnable) - Method in interface nachos.machine.ElevatorControls

Set the elevator interrupt handler.

setInterruptHandler(Runnable) - Method in interface nachos.machine.RiderControls

Set the rider's interrupt handler.

setInterruptHandler(Runnable) - Method in class nachos.machine.Timer

Set the callback to use as a timer interrupt handler.

setInterruptHandlers(Runnable, Runnable) - Method in class nachos.machine.NetworkLink

Set this link's receive and send interrupt handlers.

setInterruptHandlers(Runnable, Runnable) - Method in interface nachos.machine.SerialConsole

Set this console's receive and send interrupt handlers.

setInterruptHandlers(Runnable, Runnable) - Method in class nachos.machine.StandardConsole

setName(String) - Method in class nachos.threads.KThread

Set the name of this thread.

setPageTable(TranslationEntry[]) - Method in class nachos.machine.Processor

Set the page table pointer.

setPriority(KThread, int) - Method in class nachos.threads.PriorityScheduler

setPriority(int) - Method in class nachos.threads.PriorityScheduler.ThreadState

Set the priority of the associated thread to the specified value.

setPriority(KThread, int) - Method in class nachos.threads.Scheduler

Set the priority of the specified thread.

setPriority(int) - Method in class nachos.threads.Scheduler

Set the priority of the current thread.

setStatus(boolean) - Method in class nachos.machine.Interrupt

Set the interrupt status to be enabled (true) or disabled (false) and return the previous status.

setTarget(Runnable) - Method in class nachos.threads.KThread

Set the target of this thread.

sleep() - Method in class nachos.threads.Condition

Atomically release the associated lock and go to sleep on this condition variable until another thread wakes it using wake().

sleep() - Method in class nachos.threads.Condition2

Atomically release the associated lock and go to sleep on this condition variable until another thread wakes it using wake().

sleep() - Static method in class nachos.threads.KThread

Relinquish the CPU, because the current thread has either finished or it is blocked.

speak(int) - Method in class nachos.threads.Communicator

Wait for a thread to listen through this communicator, and then transfer word to the listener.

srcLink - Variable in class nachos.machine.Packet

The address of the source link of this packet.

srcPort - Variable in class nachos.network.MailMessage

The port used by this message on the source machine.

stackPages - Variable in class nachos.userprog.UserProcess

The number of pages in the program's stack.

StandardConsole - Class in nachos.machine

A text-based console that uses System.in and System.out.

StandardConsole(Privilege) - Constructor for class nachos.machine.StandardConsole

Allocate a new standard console.

start(Privilege) - Method in class nachos.ag.AutoGrader

Start this autograder.

start(Runnable) - Method in class nachos.machine.TCB

Causes the thread represented by this TCB to begin execution.

Stats - Class in nachos.machine

An object that maintains Nachos runtime statistics.

Stats() - Constructor for class nachos.machine.Stats

Allocate a new statistics object.

stats - Variable in class nachos.security.Privilege

Nachos runtime statistics.

strictReadFile(OpenFile, int, byte[], int, int) - Static method in class nachos.machine.Lib

Read a file, verifying that the requested number of bytes is read, and verifying that the read operation took a non-zero amount of time.

stubFileSystem() - Static method in class nachos.machine.Machine

Return the stub filesystem.

StubFileSystem - Class in nachos.machine

This class implements a file system that redirects all requests to the host operating system's file system.

StubFileSystem(Privilege, File) - Constructor for class nachos.machine.StubFileSystem

Allocate a new stub file system.

SynchConsole - Class in nachos.userprog

Provides a simple, synchronized interface to the machine's console.

SynchConsole(SerialConsole) - Constructor for class nachos.userprog.SynchConsole

Allocate a new SynchConsole.

SynchList - Class in nachos.threads

A synchronized queue.

SynchList() - Constructor for class nachos.threads.SynchList

Allocate a new synchronized queue.

T

TCB - Class in nachos.machine

A TCB simulates the low-level details necessary to create, context-switch, and destroy Nachos threads.

TCB() - Constructor for class nachos.machine.TCB

Allocate a new TCB.

tcb - Variable in class nachos.security.Privilege

Provides access to some private TCB methods.

tell() - Method in class nachos.machine.OpenFile

Get the value of the current file pointer, or -1 if this file has no pointer.

tell() - Method in class nachos.machine.OpenFileWithPosition

terminate() - Method in class nachos.machine.Kernel

Terminate this kernel.

terminate() - Static method in class nachos.machine.Machine

Terminate Nachos.

terminate(Throwable) - Static method in class nachos.machine.Machine

Terminate Nachos as the result of an unhandled exception or error.

terminate() - Method in class nachos.network.NetKernel

Terminate this kernel.

terminate() - Method in class nachos.threads.ThreadedKernel

Terminate this kernel.

terminate() - Method in class nachos.userprog.UserKernel

Terminate this kernel.

terminate() - Method in class nachos.vm.VMKernel

Terminate this kernel.

test(char) - Static method in class nachos.machine.Lib

Tests if flag was enabled on the command line.

test(long, long) - Static method in class nachos.machine.Lib

Test if a bit is set in a bit string.

thread - Variable in class nachos.threads.PriorityScheduler.ThreadState

The thread with which this object is associated.

ThreadedKernel - Class in nachos.threads

A multi-threaded OS kernel.

ThreadedKernel() - Constructor for class nachos.threads.ThreadedKernel

Allocate a new multi-threaded kernel.

ThreadQueue - Class in nachos.threads

Schedules access to some sort of resource with limited access constraints.

ThreadQueue() - Constructor for class nachos.threads.ThreadQueue

tick(boolean) - Method in interface nachos.security.Privilege.InterruptPrivilege

Advance the simulated time.

timeDoorsOpen - Static variable in interface nachos.machine.ElevatorControllerInterface

The number of ticks doors should be held open before closing them.

timer() - Static method in class nachos.machine.Machine

Return the hardware timer.

Timer - Class in nachos.machine

A hardware timer generates a CPU timer interrupt approximately every 500 clock ticks.

Timer(Privilege) - Constructor for class nachos.machine.Timer

Allocate a new timer.

timerInterrupt(Privilege, long) - Method in class nachos.ag.AutoGrader

Notify the autograder that a timer interrupt occurred and was handled by software if a timer interrupt handler was installed.

timerInterrupt() - Method in class nachos.threads.Alarm

The timer interrupt handler.

TimerTicks - Static variable in class nachos.machine.Stats

The mean amount of simulated time between timer interrupts.

toHexString(int) - Static method in class nachos.machine.Lib

Creates a padded upper-case string representation of the integer argument in base 16.

toHexString(int, int) - Static method in class nachos.machine.Lib

Creates a padded upper-case string representation of the integer argument in base 16, padding to at most the specified number of digits.

toString() - Method in class nachos.network.MailMessage

Return a string representation of the message headers.

toString() - Method in class nachos.threads.KThread

Get the full name of this thread.

totalTicks - Variable in class nachos.machine.Stats

The total amount of simulated time that has passed since Nachos started.

transferPriority - Variable in class nachos.threads.PriorityScheduler.PriorityQueue

true if this queue should transfer priority from waiting threads to the owning thread.

TranslationEntry - Class in nachos.machine

A single translation between a virtual page and a physical page.

TranslationEntry() - Constructor for class nachos.machine.TranslationEntry

Allocate a new invalid translation entry.

TranslationEntry(int, int, boolean, boolean, boolean, boolean) - Constructor for class nachos.machine.TranslationEntry

Allocate a new translation entry with the specified initial state.

TranslationEntry(TranslationEntry) - Constructor for class nachos.machine.TranslationEntry

Allocate a new translation entry, copying the contents of an existing one.

tryLoadClass(String) - Static method in class nachos.machine.Lib

Load and return the named class, or return null if the class could not be loaded.

U

unloadSections() - Method in class nachos.userprog.UserProcess

Release any resources allocated by loadSections().

unloadSections() - Method in class nachos.vm.VMProcess

Release any resources allocated by loadSections().

used - Variable in class nachos.machine.TranslationEntry

This flag is set to true every time the page is read or written by a user program.

UserKernel - Class in nachos.userprog

A kernel that can support multiple user processes.

UserKernel() - Constructor for class nachos.userprog.UserKernel

Allocate a new user kernel.

UserProcess - Class in nachos.userprog

Encapsulates the state of a user process that is not contained in its user thread (or threads).

UserProcess() - Constructor for class nachos.userprog.UserProcess

Allocate a new process.

userRegisters - Variable in class nachos.userprog.UThread

Storage for the user register set.

UserTick - Static variable in class nachos.machine.Stats

The amount to advance simulated time after each user instructions is executed.

userTicks - Variable in class nachos.machine.Stats

The total amount of simulated time that Nachos has spent in user mode.

UThread - Class in nachos.userprog

A UThread is KThread that can execute user program code inside a user process, in addition to Nachos kernel code.

UThread(UserProcess) - Constructor for class nachos.userprog.UThread

Allocate a new UThread.

V

V() - Method in class nachos.threads.Semaphore

Atomically increment this semaphore and wake up at most one other thread sleeping on this semaphore.

valid - Variable in class nachos.machine.TranslationEntry

If this flag is false, this translation entry is ignored.

verifyPrivilege() - Method in class nachos.security.NachosSecurityManager

Verify that the caller is privileged.

verifyPrivilege(Permission) - Method in class nachos.security.NachosSecurityManager

Verify that the caller is privileged, so as to check the specified permission.

VMKernel - Class in nachos.vm

A kernel that can support multiple demand-paging user processes.

VMKernel() - Constructor for class nachos.vm.VMKernel

Allocate a new VM kernel.

VMProcess - Class in nachos.vm

A UserProcess that supports demand-paging.

VMProcess() - Constructor for class nachos.vm.VMProcess

Allocate a new process.

vpn - Variable in class nachos.machine.TranslationEntry

The virtual page number.

W

waitForAccess(KThread) - Method in class nachos.threads.PriorityScheduler.PriorityQueue

waitForAccess(PriorityScheduler.PriorityQueue) - Method in class nachos.threads.PriorityScheduler.ThreadState

Called when waitForAccess(thread) (where thread is the associated thread) is invoked on the specified priority queue.

waitForAccess(KThread) - Method in class nachos.threads.ThreadQueue

Notify this thread queue that the specified thread is waiting for access.

waitUntil(long) - Method in class nachos.threads.Alarm

Put the current thread to sleep for at least x ticks, waking it up in the timer interrupt handler.

wake() - Method in class nachos.threads.Condition

Wake up at most one thread sleeping on this condition variable.

wake() - Method in class nachos.threads.Condition2

Wake up at most one thread sleeping on this condition variable.

wakeAll() - Method in class nachos.threads.Condition

Wake up all threads sleeping on this condition variable.

wakeAll() - Method in class nachos.threads.Condition2

Wake up all threads sleeping on this condition variable.

write(int, byte[], int, int) - Method in class nachos.machine.ArrayFile

write(int, byte[], int, int) - Method in class nachos.machine.OpenFile

Write this file starting at the specified position and return the number of bytes successfully written.

write(byte[], int, int) - Method in class nachos.machine.OpenFile

Write this file starting at the current file pointer and return the number of bytes successfully written.

write(byte[], int, int) - Method in class nachos.machine.OpenFileWithPosition

writeByte(int) - Method in interface nachos.machine.SerialConsole

Send another byte.

writeByte(int) - Method in class nachos.machine.StandardConsole

writeByte(int) - Method in class nachos.userprog.SynchConsole

Send a byte.

writeRegister(int, int) - Method in class nachos.machine.Processor

Write the specified value into the specified CPU register.

writeTLBEntry(int, TranslationEntry) - Method in class nachos.machine.Processor

Fill the specified TLB entry.

writeVirtualMemory(int, byte[]) - Method in class nachos.userprog.UserProcess

Transfer all data from the specified array to this process's virtual memory.

writeVirtualMemory(int, byte[], int, int) - Method in class nachos.userprog.UserProcess

Transfer data from the specified array to this process's virtual memory.

Y

yield() - Static method in class nachos.machine.Machine

Yield to non-Nachos threads.

yield() - Static method in class nachos.threads.KThread

Relinquish the CPU if any other thread is ready to run.

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