Threads in C

Using threads to structure programs in C.

Welcome to the family…

C6808Code Development System

OptimizingC compiler and development tools for the entire Freescale ’08 family.

C6808

• Optimizing, standards-basedC cross-compiler.

• Very tight code generation;“We win benchmarks”.

• Fixed-point transcendental library.

• Support for event-driven applications in C…

Threads

• Execution paths with common state.• Event-driven.• Brings interrupt style

into general programming.• Fully compatible

with standard C.

Hardware Event Expression DispatchACMPSC.ACF == 1&& state == READY

ISR() { /* Interrupt code */}

IRQ

THREAD() { /* Thread code */}

__DISPATCH();

Threads

• “Pseudo-hardware” allows event-driven programs.

Hardware Event Expression DispatchACMPSC.ACF == 1&& state == READY

ISR() { /* Interrupt code */}

IRQ

THREAD() { /* Thread code */}

__DISPATCH();

Threads

• Dispatch on arbitrary expressions.

Hardware Event Expression DispatchACMPSC.ACF == 1&& state == READY

ISR() { /* Interrupt code */}

IRQ

THREAD() { /* Thread code */}

__DISPATCH();

Threads

• Separate and organize dispatch and event code.

Run-to-Completion

• Asynchronous programming costs resources.

• Less complex than an RTOS.

sales@bytecraft.comwww.bytecraft.com

AboutByte Craft Limited

• 30 years in the embedded marketplace.

• Our main products: C cross-compilers.

• Experts in code generation.

Thank You.

http://www.bytecraft.com/Threads_in_C