proc.c File Reference

Simple realtime multitasking scheduler. More...

#include "proc_p.h"
#include "proc.h"
#include <mware/event.h>
#include <cpu/irq.h>
#include <cpu/types.h>
#include <cpu/attr.h>
#include <cfg/debug.h>
#include <cfg/module.h>
#include <cfg/arch_config.h>
#include <cfg/macros.h>
#include <string.h>


Functions
EXTERN_C void	asm_switch_context (cpustack_t new_sp, cpustack_t save_sp)
	CPU dependent context switching routines.
struct Process *	proc_new_with_name (UNUSED(const char , name), void(entry)(void), iptr_t data, size_t stacksize, cpustack_t *stack_base)
	Create a new process, starting at the provided entry point.
void	proc_rename (struct Process proc, const char name)
	Rename a process.
void	proc_schedule (void)
	System scheduler: pass CPU control to the next process in the ready queue.
void	proc_exit (void)
	Terminate the current process.
void	proc_switch (void)
	Co-operative context switch.
struct Process *	proc_current (void)
	Get the pointer to the current process.
iptr_t	proc_current_user_data (void)
	Get the pointer to the user data of the current process.
Variables
REGISTER Process *	CurrentProcess
	Track running processes.
REGISTER List	ProcReadyList
	Track ready processes.
struct Process	MainProcess
	The main process (the one that executes main()).

Detailed Description

Simple realtime multitasking scheduler.

Context switching is only done cooperatively.

Author:: Bernardo Innocenti <bernie@develer.com>
Stefano Fedrigo <aleph@develer.com>

Definition in file proc.c.

EXTERN_C void asm_switch_context	(	cpustack_t **	new_sp,
		cpustack_t **	save_sp
	)

CPU dependent context switching routines.

struct Process* proc_new_with_name	(	UNUSED(const char *, name)	,
		void(*)(void)	entry,
		iptr_t	data,
		size_t	stacksize,
		cpustack_t *	stack_base
	)			`[read]`

Create a new process, starting at the provided entry point.

Returns:: Process structure of new created process if successful, NULL otherwise.

Definition at line 142 of file proc.c.

void proc_schedule ( void )

System scheduler: pass CPU control to the next process in the ready queue.

Schedule to another process *without* adding the current to the ready list.

Saving and restoring the context on the stack is done by a CPU-dependent support routine which must usually be written in assembly.

Definition at line 244 of file proc.c.

REGISTER Process* CurrentProcess

Track running processes.

Definition at line 73 of file proc.c.

struct Process MainProcess

The main process (the one that executes main()).

Definition at line 92 of file proc.c.

REGISTER List ProcReadyList

Track ready processes.

Definition at line 74 of file proc.c.