cond.c File Reference

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

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Classes
struct	_cond_st

Macros
#define	LWP_OBJTYPE_COND   5
#define	LWP_CHECK_COND(hndl)

Typedefs
typedef struct _cond_st	cond_st

Functions
int	clock_gettime (struct timespec *tp)
void	timespec_subtract (const struct timespec *tp_start, const struct timespec *tp_end, struct timespec *result)
void	__lwp_cond_init ()
static __inline__ cond_st *	__lwp_cond_open (cond_t cond)
static __inline__ void	__lwp_cond_free (cond_st *cond)
static cond_st *	__lwp_cond_allocate ()
static s32	__lwp_cond_waitsupp (cond_t cond, mutex_t mutex, u64 timeout, u8 timedout)
static s32	__lwp_cond_signalsupp (cond_t cond, u8 isbroadcast)
s32	LWP_CondInit (cond_t *cond)
	Initialize condition variable. More...
s32	LWP_CondWait (cond_t cond, mutex_t mutex)
	Wait on condition variable. More...
s32	LWP_CondSignal (cond_t cond)
	Signal a specific thread waiting on this condition variable to wake up. More...
s32	LWP_CondBroadcast (cond_t cond)
	Broadcast all threads waiting on this condition variable to wake up. More...
s32	LWP_CondTimedWait (cond_t cond, mutex_t mutex, const struct timespec *abstime)
	Timed wait on a conditionvariable. More...
s32	LWP_CondDestroy (cond_t cond)
	Destroy condition variable, release all threads and handles blocked on that condition variable. More...

Variables
lwp_objinfo	_lwp_cond_objects

Macro Definition Documentation

LWP_CHECK_COND

#define LWP_CHECK_COND

(

hndl

)

Value:

{ \
 if(((hndl)==LWP_COND_NULL) || (LWP_OBJTYPE(hndl)!=LWP_OBJTYPE_COND)) \
 return NULL; \
}

LWP_OBJTYPE_COND

#define LWP_OBJTYPE_COND   5

Typedef Documentation

cond_st

typedef struct _cond_st cond_st

Function Documentation

__lwp_cond_allocate()

static cond_st* __lwp_cond_allocate ( )

static

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__lwp_cond_free()

static __inline__ void __lwp_cond_free ( cond_st *  cond )

static

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__lwp_cond_init()

void __lwp_cond_init

(

void

)

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__lwp_cond_open()

static __inline__ cond_st* __lwp_cond_open ( cond_t  cond )

static

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__lwp_cond_signalsupp()

static s32 __lwp_cond_signalsupp ( cond_t  cond, u8  isbroadcast  )

static

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__lwp_cond_waitsupp()

static s32 __lwp_cond_waitsupp ( cond_t  cond, mutex_t  mutex, u64  timeout, u8  timedout  )

static

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clock_gettime()

int clock_gettime

(

struct timespec *

tp

)

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LWP_CondBroadcast()

s32 LWP_CondBroadcast

(

cond_t

cond

)

Broadcast all threads waiting on this condition variable to wake up.

Parameters

[in]

cond

handle to the cond_t structure

Returns

0 on success, <0 on error

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LWP_CondDestroy()

s32 LWP_CondDestroy

(

cond_t

cond

)

Destroy condition variable, release all threads and handles blocked on that condition variable.

Parameters

[in]

cond

handle to the cond_t structure

Returns

0 on success, <0 on error

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LWP_CondInit()

s32 LWP_CondInit

(

cond_t *

cond

)

Initialize condition variable.

Parameters

[out]

cond

pointer to the cond_t handle

Returns

0 on success, <0 on error

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LWP_CondSignal()

s32 LWP_CondSignal

(

cond_t

cond

)

Signal a specific thread waiting on this condition variable to wake up.

Parameters

[in]

cond

handle to the cond_t structure

Returns

0 on success, <0 on error

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LWP_CondTimedWait()

s32 LWP_CondTimedWait	(	cond_t	cond,
		mutex_t	mutex,
		const struct timespec *	abstime
	)

Timed wait on a conditionvariable.

Parameters

[in]	cond	handle to the cond_t structure
[in]	mutex	handle to the mutex_t structure
[in]	abstime	pointer to a timespec structure holding the abs time for the timeout.

Returns

0 on success, <0 on error

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LWP_CondWait()

s32 LWP_CondWait	(	cond_t	cond,
		mutex_t	mutex
	)

Wait on condition variable.

Parameters

[in]	cond	handle to the cond_t structure
[in]	mutex	handle to the mutex_t structure

Returns

0 on success, <0 on error

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timespec_subtract()

void timespec_subtract	(	const struct timespec *	tp_start,
		const struct timespec *	tp_end,
		struct timespec *	result
	)

Variable Documentation

_lwp_cond_objects

lwp_objinfo _lwp_cond_objects