sys_sem.c

来自「abstract rtos」· C语言 代码 · 共 148 行

#include "syscfg.h"

#ifdef __cplusplus
#if __cplusplus
extern "C"{
#endif 
#endif 



#include "sys/sys_pub.h"
#include "os/assert_pub.h"






AOS_ASSERTFILE()

AOS_INLINE U32 sys_sem_create( S8 name[AOS_NAME_LEN+1], U32 flags, U32 value, SYS_SEM_T *sem )
{
    AOS_ASSERT( (SYS_SEM_T *)NULL != sem );
    if(sem == NULL)
    {
        return SYS_OBJ_CREATE_FAIL;
    }
    
    *sem = CreateSemaphore( NULL, (S32)value,2147483647,NULL );

    if( NULL == *sem )
    {
        return SYS_OBJ_CREATE_FAIL;
    }

    (void)name;
    (void)flags;
    
    return AOS_SUCC;
}

AOS_INLINE U32 sys_sem_cancel(SYS_SEM_T *sem)
{
    AOS_ASSERT( (SYS_SEM_T *)NULL != sem );
    if(sem == NULL)
    {
        return SYS_CALL_FAIL;
    }

    if( 0 == CloseHandle(*sem)  ) 
    {
        return SYS_CALL_FAIL;
    }
    
    return AOS_SUCC;
}

AOS_INLINE U32 sys_sem_wait( SYS_SEM_T *sem, U32 time_out )
{
    U32 result;

    AOS_ASSERT( (SYS_SEM_T *)NULL != sem );
    if(sem == NULL)
    {
        return SYS_OBJ_INVALID;
    }
    
    if( 0 == time_out )
    {
        time_out = INFINITE;
    }
    
    result = WaitForSingleObject( *sem, time_out );

    if( WAIT_OBJECT_0 == result )
    {
    	result = AOS_SUCC;
    }
    else if( WAIT_TIMEOUT == result )
    {
       result = SYS_WAIT_TIMEOUT;
    }
    else if( WAIT_FAILED == result )
    {
        result = SYS_OBJ_INVALID;
    }
    else
    {
        result = SYS_CALL_FAIL;
    }

    return result;
}

AOS_INLINE U32 sys_sem_trywait( SYS_SEM_T *sem )
{
    U32 result;
    
    AOS_ASSERT( (SYS_SEM_T *)NULL != sem );
    if(sem == NULL)
    {
        return SYS_OBJ_INVALID;
    }

    result = WaitForSingleObject( *sem, 0 );

    if( WAIT_OBJECT_0 == result )
    {
    	result = AOS_SUCC;
    }
    else if( WAIT_TIMEOUT == result )
    {
       result = SYS_WAIT_TIMEOUT;
    }
    else if( WAIT_FAILED == result )
    {
        result = SYS_OBJ_INVALID;
    }
    else
    {
        result = SYS_CALL_FAIL;
    }

    return result;
}

AOS_INLINE U32 sys_sem_post( SYS_SEM_T *sem )
{
    AOS_ASSERT( (SYS_SEM_T *)NULL != sem );
    if(sem == NULL)
    {
        return SYS_OBJ_INVALID;
    }

    if( 0 == ReleaseSemaphore( *sem, 1, NULL) )
    {
        return SYS_CALL_FAIL;
    }

    return AOS_SUCC;
}

#ifdef __cplusplus
#if __cplusplus
}
#endif 
#endif