mutex.c File Reference

#include <stdlib.h>
#include <errno.h>
#include "asm.h"
#include "lwp_mutex.h"
#include "lwp_objmgr.h"
#include "lwp_config.h"
#include "mutex.h"

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Classes
struct	_mutex_st

Macros
#define	LWP_OBJTYPE_MUTEX   3
#define	LWP_CHECK_MUTEX(hndl)

Typedefs
typedef struct _mutex_st	mutex_st

Functions
static s32	__lwp_mutex_locksupp (mutex_t lock, u32 timeout, u8 block)
void	__lwp_mutex_init ()
static __inline__ mutex_st *	__lwp_mutex_open (mutex_t lock)
static __inline__ void	__lwp_mutex_free (mutex_st *lock)
static mutex_st *	__lwp_mutex_allocate ()
s32	LWP_MutexInit (mutex_t *mutex, bool use_recursive)
	Initializes a mutex lock. More...
s32	LWP_MutexDestroy (mutex_t mutex)
	Close mutex lock, release all threads and handles locked on this mutex. More...
s32	LWP_MutexLock (mutex_t mutex)
	Enter the mutex lock. More...
s32	LWP_MutexTryLock (mutex_t mutex)
	Try to enter the mutex lock. More...
s32	LWP_MutexUnlock (mutex_t mutex)
	Release the mutex lock and let other threads process further on this mutex. More...

Variables
lwp_objinfo	_lwp_mutex_objects

Macro Definition Documentation

LWP_CHECK_MUTEX

#define LWP_CHECK_MUTEX

(

hndl

)

Value:

{                                   \
    if(((hndl)==LWP_MUTEX_NULL) || (LWP_OBJTYPE(hndl)!=LWP_OBJTYPE_MUTEX))  \
        return NULL;                \
}

LWP_OBJTYPE_MUTEX

#define LWP_OBJTYPE_MUTEX   3

Typedef Documentation

mutex_st

typedef struct _mutex_st mutex_st

Function Documentation

__lwp_mutex_allocate()

static mutex_st* __lwp_mutex_allocate ( )

static

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__lwp_mutex_free()

static __inline__ void __lwp_mutex_free ( mutex_st *  lock )

static

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__lwp_mutex_init()

void __lwp_mutex_init

(

void

)

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__lwp_mutex_locksupp()

static s32 __lwp_mutex_locksupp ( mutex_t  lock, u32  timeout, u8  block  )

static

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__lwp_mutex_open()

static __inline__ mutex_st* __lwp_mutex_open ( mutex_t  lock )

static

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LWP_MutexDestroy()

s32 LWP_MutexDestroy

(

mutex_t

mutex

)

Close mutex lock, release all threads and handles locked on this mutex.

Parameters

[in]

mutex

handle to the mutex_t structure.

Returns

0 on success, <0 on error

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LWP_MutexInit()

s32 LWP_MutexInit	(	mutex_t *	mutex,
		bool	use_recursive
	)

Initializes a mutex lock.

Parameters

[out]	mutex	pointer to a mutex_t handle.
[in]	use_recursive	whether to allow the thread, whithin the same context, to enter multiple times the lock or not.

Returns

0 on success, <0 on error

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LWP_MutexLock()

s32 LWP_MutexLock

(

mutex_t

mutex

)

Enter the mutex lock.

Parameters

[in]

mutex

handle to the mutext_t structure.

Returns

0 on success, <0 on error

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LWP_MutexTryLock()

s32 LWP_MutexTryLock

(

mutex_t

mutex

)

Try to enter the mutex lock.

Parameters

[in]

mutex

handle to the mutex_t structure.

Returns

0: on first aquire, 1: would lock

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LWP_MutexUnlock()

s32 LWP_MutexUnlock

(

mutex_t

mutex

)

Release the mutex lock and let other threads process further on this mutex.

Parameters

[in]

mutex

handle to the mutex_t structure.

Returns

0 on success, <0 on error

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Variable Documentation

_lwp_mutex_objects

lwp_objinfo _lwp_mutex_objects