# Process Concept

# Processes

# Process Classification

根據進程所執行的程式碼可以分成三類：

系統進程，執行系統程式碼
用戶進程，執行用戶程式碼
用戶進程，執行系統程式碼

# Example: Special Processes in Unix

PID 0
PID 1
PID 2

# Process States

# Process Scheduling

# Process Scheduling - A Queueing Diagram

# Process Scheduling - Schedulers

# Process Scheduling - Context Switches

# Operations on Processes

# Interprocess Communication

# Interprocess Communication - Shared Memory

# Interprocess Communication - Message Passing

# Interprocess Communication - Direct Communication

# Interprocess Communication - Indirect Communication

# Interprocess Communication - Synchronization

# Interprocess Communication - Buffering

# Interprocess Communication - Exception Conditions

# Example - POSIX

# Example - Mach

# Example - Mach

# Example - Windows

# Communication in Client-Server Systems

# Pipes

# Pipes - Ordinary Pipes

# Pipes - Named Pipes

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