semaphore.c File Reference

#include <isix/types.h>
#include <isix/config.h>
#include <isix/memory.h>
#include <prv/scheduler.h>
#include <isix/semaphore.h>
#include <prv/semaphore.h>
#include <string.h>
#include <prv/multiple_objects.h>
#include <isix/printk.h>

Include dependency graph for semaphore.c:

Go to the source code of this file.

Defines
#define	ISIX_DEBUG_SEMAPHORE   ISIX_DBG_OFF
Functions
sem_t *	isix_sem_create_limited (sem_t *sem, int val, int limit_val)
int	isix_sem_wait (sem_t *sem, tick_t timeout)
static int	isixp_wakeup_multiple (task_t *task_wake)
int	isixp_sem_signal (sem_t *sem, bool isr)
int	isix_sem_get_isr (sem_t *sem)
int	isix_sem_setval (sem_t *sem, int val)
int	isix_sem_getval (sem_t *sem)
int	isix_sem_destroy (sem_t *sem)
tick_t	isix_ms2tick (unsigned long ms)
	Convert ms to ticks.
int	isix_wait (tick_t timeout)
	Isix wait selected amount of time.

---

Define Documentation

#define ISIX_DEBUG_SEMAPHORE   ISIX_DBG_OFF

Definition at line 11 of file semaphore.c.

---

Function Documentation

tick_t isix_ms2tick

(

unsigned long

ms

)

Convert ms to ticks.

Convert ms value to the system tick value

Parameters:

[in]

ms

Time value in the millisecond

Returns:

Sys tick time value

Definition at line 285 of file semaphore.c.

References ISIX_CONFIG_HZ.

Referenced by isix::isix_vtimer_start_ms(), and isix::isix_wait_ms().

sem_t* isix_sem_create_limited	(	sem_t *	sem,
		int	val,
		int	limit_val
	)

Definition at line 24 of file semaphore.c.

References IHANDLE_T_SEM, isix_alloc(), isix_printk, list_init(), NULL, and task_struct::sem.

int isix_sem_destroy

(

sem_t *

sem

)

Definition at line 268 of file semaphore.c.

References isix::ISIX_EBUSY, isix::ISIX_EINVARG, isix::ISIX_EOK, isix_free(), isixp_enter_critical(), isixp_exit_critical(), and list_isempty.

Referenced by isix_fifo_destroy().

int isix_sem_get_isr

(

sem_t *

sem

)

Definition at line 216 of file semaphore.c.

References isix::ISIX_EBUSY, isix::ISIX_EINVARG, isix::ISIX_EOK, isixp_enter_critical(), and isixp_exit_critical().

Referenced by isix_fifo_read_isr(), and isix_fifo_write_isr().

int isix_sem_getval

(

sem_t *

sem

)

Definition at line 257 of file semaphore.c.

References isix::ISIX_EINVARG, isixp_enter_critical(), and isixp_exit_critical().

Referenced by isix_fifo_count().

int isix_sem_setval	(	sem_t *	sem,
		int	val
	)

Definition at line 232 of file semaphore.c.

References isix::ISIX_EBUSY, isix::ISIX_EINVARG, isix::ISIX_EOK, isix_printk, isix::ISIX_SEM_ULIMITED, isixp_enter_critical(), isixp_exit_critical(), and list_isempty.

int isix_sem_wait	(	sem_t *	sem,
		tick_t	timeout
	)

Definition at line 49 of file semaphore.c.

References isix_bug(), isix_current_task, isix::ISIX_EINVARG, isix::ISIX_EOK, isix::ISIX_ETIMEOUT, isix_printk, isix::isix_yield(), isixp_add_task_to_sem_list(), isixp_add_task_to_waiting_list(), isixp_delete_task_from_ready_list(), isixp_enter_critical(), isixp_exit_critical(), task_struct::jiffies, NULL, task_struct::sem, task_struct::state, TASK_READY, TASK_RUNNING, TASK_SEM_WKUP, TASK_SLEEPING, and TASK_WAITING.

Referenced by isix_fifo_read(), isix_fifo_write(), isix_wait(), and mem_lock().

int isix_wait

(

tick_t

timeout

)

Isix wait selected amount of time.

Definition at line 294 of file semaphore.c.

References isix::ISIX_EOK, isix_get_jiffies(), isix_scheduler_running, isix_sem_wait(), NULL, and isix::port_idle_cpu().

int isixp_sem_signal	(	sem_t *	sem,
		bool	isr
	)

Definition at line 128 of file semaphore.c.

References task_struct::inode_sem, isix_bug(), isix_current_task, isix::ISIX_EINVARG, isix::ISIX_ENOMEM, isix::ISIX_EOK, isix_printk, isix::ISIX_SEM_ULIMITED, isix::isix_yield(), isixp_add_task_to_ready_list(), isixp_enter_critical(), isixp_exit_critical(), isixp_wakeup_multiple(), isixp_wakeup_multiple_waiting_tasks(), list_delete(), list_get_first, list_isempty, NULL, task_struct::prio, TASK_READY, TASK_SEM_WKUP, TASK_SLEEPING, and TASK_WAITING.

static int isixp_wakeup_multiple

(

task_t *

task_wake

)

[static]

Definition at line 107 of file semaphore.c.

References isix::ISIX_ENOMEM, isix::ISIX_EOK, isix_printk, isixp_add_task_to_ready_list(), list_delete(), TASK_MULTIPLE_WKUP, TASK_READY, TASK_SLEEPING, and TASK_WAITING_MULTIPLE.

Referenced by isixp_sem_signal().