proc.h File Reference

#include <proc/task.h>

Include dependency graph for proc.h:

Functions
task_t *	arch_task_init ()
void	arch_task_switch (task_t *prev, task_t *next)
task_t *	arch_task_create (uint64_t clone_flags, uintptr_t entrypoint)
void	arch_task_enter_user (uintptr_t entry, uintptr_t user_stack_top, task_t *task)
void	arch_task_set_kernel_stack (task_t *task)

Function Documentation

arch_task_create()

task_t * arch_task_create	(	uint64_t	clone_flags,
		uintptr_t	entrypoint )

Creates a new task.

This function is called by task_create().

Parameters

clone_flags	configuration flags
entrypoint	the entrypoint of the task

Returns

a task

arch_task_enter_user()

void arch_task_enter_user	(	uintptr_t	entry,
		uintptr_t	user_stack_top,
		task_t *	task )

Enters user mode and starts executing at entry.

This function is called by k_execv() and it does not return.

Parameters

entry	the user mode entry point
user_stack_top	the top (high address) of the user stack
task	the task entering user mode

arch_task_init()

task_t * arch_task_init

(

)

Creates and returns the initial task.

This function is called by task_init().

Returns

the initial task

arch_task_set_kernel_stack()

void arch_task_set_kernel_stack

(

task_t *

task

)

Installs the kernel stack used on the next entry into the kernel.

This function is called by task_switch() to make sure the next syscall or interrupt of task is handled on its own kernel stack.

Parameters

task	the task whose kernel stack top should be installed

arch_task_switch()

void arch_task_switch	(	task_t *	prev,
		task_t *	next )

Switches to a new task.

This function is called by task_switch(), which is called by task_schedule() and task_schedule_on_timer_tick().

Parameters

prev	the task that should be stopped
next	the task that should be started