rres_hooks.c File Reference

#include "rres_config.h"
#include "qos_debug.h"
#include "qos_prof.h"
#include "qos_list.h"
#include "qos_func.h"
#include "kal_generic.h"
#include "rres_interface.h"
#include "rres_kpi_protected.h"
#include "rres.h"
#include "rres_dispatch.h"
#include "rres_time.h"
#include <asm/param.h>
#include <linux/version.h>
#include "kal_timer.h"
#include <sys/time.h>
#include <time.h>

Go to the source code of this file.

Defines
#define	QOS_DEBUG_LEVEL RRES_MOD_DEBUG_LEVEL
Functions
void	rres_unblock_hook (kal_task_t *t, long old_state)
	Handler of unblock_hook.
void	rres_block_hook (kal_task_t *t)
	Handler of block_hook.
void	rres_stop_hook (kal_task_t *t)
	Handler of stop_hook.
void	rres_continue_hook (kal_task_t *t, long old_state)
	Handler of continue_hook.
void	rres_fork_hook (kal_task_t t, kal_task_t prev)
	Handler of fork_hook.
void	rres_cleanup_hook (kal_task_t *t)
	Handler of cleanup_hook.
void	set_gensched_hooks (void)
	Set scheduler hooks.
int	check_gensched_hooks (void)
	Return true if hooks are not initialised.
void	unset_gensched_hooks (void)
	Unset scheduler hooks.

Detailed Description

Definition in file rres_hooks.c.

Define Documentation

#define QOS_DEBUG_LEVEL RRES_MOD_DEBUG_LEVEL

Definition at line 11 of file rres_hooks.c.

Function Documentation

void rres_block_hook ( kal_task_t * t )

Handler of block_hook.

Called when a task blocks.

Note:: While a task is executing kernel-space code that is going to block it, if kernel is preemptive, the RRES enforcement timer may fire, causing the task to be stopped through task_stop(), but the task will be descheduled only at return from kernel-space, i.e. it may continue execution of the code needed to block. In such case, the block hook finds a stopped task, thus it dispatches it back, in order to preserve the KAL invariant that a blocked task was in dispatched mode before blocking.

Definition at line 64 of file rres_hooks.c.

References prof_end, prof_func, prof_vars, rres_get_spinlock(), and rres_on_task_block().

Referenced by rres_stop_hook(), and set_gensched_hooks().

void rres_cleanup_hook ( kal_task_t * t )

Handler of cleanup_hook.

Called when a task exits.

This handler may be overridden by other modules.

Definition at line 138 of file rres_hooks.c.

References prof_end, prof_func, prof_vars, qos_chk_do, qos_chk_ok_do, rres_check_destroy(), rres_detach_task_nosched(), rres_empty(), rres_find_by_task(), rres_get_spinlock(), rres_has_ready_tasks(), rres_running(), rres_sample_time(), rres_schedule(), and srv.