OPESSYS: Module 3 Quiz Game

A unit of execution within a process

A standalone program

A data storage unit

A network protocol

Many-to-One

One-to-One

Many-to-Many

Two-Level

Reuse of existing threads

Increased security

Simplified code

Lower memory usage

Diminishing returns with more cores

Linear speedup with more cores

Increased complexity with more threads

Memory management issues

Pthreads

Windows threads

Java threads

Grand Central Dispatch

Data specific to a thread

Global data storage

Kernel memory management

Process-wide variable storage

Multiple tasks making progress

Tasks executing simultaneously

Sequential task execution

Parallel execution on multiple cores

clone()

fork()

exec()

pthread_create()

One thread blocking all others

High memory usage

Poor resource sharing

Complex implementation

Coordinate user and kernel threads

Manage memory allocation

Handle I/O operations

Increase security