mutex.h File Reference

Mutex for thread synchronization. More...

Detailed Description

Mutex for thread synchronization.

Author

Kaspar Schleiser kaspa.nosp@m.r@sc.nosp@m.hleis.nosp@m.er.d.nosp@m.e

Definition in file mutex.h.

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "architecture.h"
#include "kernel_defines.h"
#include "list.h"
#include "thread.h"

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Data Structures
struct	mutex_t
	Mutex structure. More...
struct	mutex_cancel_t
	A cancellation structure for use with mutex_lock_cancelable and mutex_cancel. More...

Macros
#define	MUTEX_INIT   { .queue = { .next = NULL } }
	Static initializer for mutex_t.
#define	MUTEX_INIT_LOCKED   { .queue = { .next = MUTEX_LOCKED } }
	Static initializer for mutex_t with a locked mutex.

Functions
bool	mutex_lock_internal (mutex_t *mutex, bool block)
	Internal function implementing mutex_lock and mutex_trylock.
static void	mutex_init (mutex_t *mutex)
	Initializes a mutex object.
static void	mutex_init_locked (mutex_t *mutex)
	Initializes a mutex object in a locked state.
static mutex_cancel_t	mutex_cancel_init (mutex_t *mutex)
	Initialize a mutex cancellation structure.
static int	mutex_trylock (mutex_t *mutex)
	Tries to get a mutex, non-blocking.
static void	mutex_lock (mutex_t *mutex)
	Locks a mutex, blocking.
int	mutex_lock_cancelable (mutex_cancel_t *mc)
	Locks a mutex, blocking.
void	mutex_unlock (mutex_t *mutex)
	Unlocks the mutex.
void	mutex_unlock_and_sleep (mutex_t *mutex)
	Unlocks the mutex and sends the current thread to sleep.
void	mutex_cancel (mutex_cancel_t *mc)
	Cancels a call to mutex_lock_cancelable.