Context Manager

Detailed Description

The SeCtx library makes it possible to use sequential functions in an event driven system such as a bare metal (non RTOS) system.

It does so by implementing a method for saving and restoring the stack by using the standard C library functions setjmp/longjmp.

See Bare Metal Systems for an introduction.

Collaboration diagram for Context Manager:

Classes
struct	SeCtx
	SeCtx structure: See Context Manager and Bare Metal Systems for details. More...

Typedefs
typedef void(*	SeCtxTask) (struct SeCtx *ctx)
	The task/thread entry point.
typedef struct SeCtx	SeCtx
	SeCtx structure: See Context Manager and Bare Metal Systems for details.

Functions
void	SeCtx_constructor (SeCtx *o, SeCtxTask t, void *buf, int bufLen)
	Create a Context Manager instance. More...
void	SeCtx_panic (SeCtx *o, U32 size)
	Function you must implement. More...

Function Documentation

SeCtx_constructor()

void SeCtx_constructor	(	SeCtx *	o,
		SeCtxTask	t,
		void *	buf,
		int	bufLen
	)

Create a Context Manager instance.

Parameters

o	uninitialized data of size sizeof(SeCtx).
t	the task/thread to call
buf	buffer used for storing the stack when switching from sequential mode to event driven mode.
bufLen	buffer length.

See also

SeCtx_panic

SeCtx_panic()

void SeCtx_panic	(	SeCtx *	o,
		U32	size
	)

Function you must implement.

This function is called if the buffer provided in SeCtx_constructor is too small.