kapi.cxx

ecos为实时嵌入式操作系统

/* CPU level interrupt mask                                                  */
externC void cyg_interrupt_disable()
{
    Cyg_Interrupt::disable_interrupts();
}

externC void cyg_interrupt_enable()
{
    Cyg_Interrupt::enable_interrupts();
}

/* Interrupt controller access                                               */
externC void cyg_interrupt_mask(cyg_vector_t vector)
{
    Cyg_Interrupt::mask_interrupt( (cyg_vector)vector);
}

externC void cyg_interrupt_unmask(cyg_vector_t vector)
{
    Cyg_Interrupt::unmask_interrupt( (cyg_vector)vector);
}


externC void cyg_interrupt_acknowledge(cyg_vector_t vector)
{
    Cyg_Interrupt::acknowledge_interrupt( (cyg_vector)vector);
}


externC void cyg_interrupt_configure(
    cyg_vector_t        vector,         /* vector to configure               */
    cyg_bool_t          level,          /* level or edge triggered           */
    cyg_bool_t          up              /* rising/faling edge, high/low level*/
)
{
    Cyg_Interrupt::configure_interrupt( (cyg_vector)vector, level, up );
}


/*---------------------------------------------------------------------------*/
/* Counters, Clocks and Alarms                                               */

externC void cyg_counter_create(
    cyg_handle_t        *handle,        /* returned counter handle           */
    cyg_counter         *counter        /* put counter here                  */
)
{
    CYG_ASSERT_SIZES( cyg_counter, Cyg_Counter );

    Cyg_Counter *t = new((void *)counter) Cyg_Counter ();
    t=t;

    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)counter;
}

externC void cyg_counter_delete(cyg_handle_t counter)
{
    ((Cyg_Counter *)counter)->~Cyg_Counter();
}

/* Return current value of counter                                           */
externC cyg_tick_count_t cyg_counter_current_value(cyg_handle_t counter)
{
    return ((Cyg_Counter *)counter)->current_value();
}

/* Set new current value                                                     */
externC void cyg_counter_set_value(
    cyg_handle_t        counter,
    cyg_tick_count_t new_value
)
{
    ((Cyg_Counter *)counter)->set_value( new_value );
}

/* Advance counter by one tick                                               */
externC void cyg_counter_tick(cyg_handle_t counter)
{
    ((Cyg_Counter *)counter)->tick(); 
}

/* Create a clock object                */
externC void cyg_clock_create(
    cyg_resolution_t    resolution,     /* Initial resolution                */
    cyg_handle_t        *handle,        /* Returned clock handle             */
    cyg_clock           *clock          /* put clock here                    */
)
{
    CYG_ASSERT_SIZES( cyg_clock, Cyg_Clock );

    Cyg_Clock::cyg_resolution res;

    res.dividend = resolution.dividend;
    res.divisor  = resolution.divisor;

    Cyg_Clock *t = new((void *)clock) Cyg_Clock ( res );
    t=t;

    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)clock;
}

externC void cyg_clock_delete(cyg_handle_t clock)
{
    ((Cyg_Clock *)clock)->~Cyg_Clock();
}

/* convert a clock handle to a counter handle so we can use the              */
/* counter API on it.                                                        */
externC void cyg_clock_to_counter(
    cyg_handle_t        clock,
    cyg_handle_t        *counter
)
{
    CYG_CHECK_DATA_PTR( counter, "Bad counter handle pointer" );
    *counter = (cyg_handle_t)(Cyg_Counter *)clock;
}

externC void cyg_clock_set_resolution(
    cyg_handle_t        clock,
    cyg_resolution_t    resolution      /* New resolution                    */
)
{
    Cyg_Clock::cyg_resolution res;

    res.dividend = resolution.dividend;
    res.divisor  = resolution.divisor;

    ((Cyg_Clock *)clock)->set_resolution( res );
}

externC cyg_resolution_t cyg_clock_get_resolution(cyg_handle_t clock)
{
    Cyg_Clock::cyg_resolution res =
        ((Cyg_Clock *)clock)->get_resolution();    

    cyg_resolution_t resolution;

    resolution.dividend = res.dividend;
    resolution.divisor  = res.divisor;

    return resolution;
}

#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK
externC cyg_handle_t cyg_real_time_clock(void)
{
    return (cyg_handle_t)Cyg_Clock::real_time_clock;
}

externC cyg_tick_count_t cyg_current_time(void)
{
    return Cyg_Clock::real_time_clock->current_value();
}
#endif

externC void cyg_alarm_create(
    cyg_handle_t        counter,        /* Attached to this counter          */
    cyg_alarm_t         *alarmfn,       /* Call-back function                */
    cyg_addrword_t      data,           /* Call-back data                    */
    cyg_handle_t        *handle,        /* Returned alarm object             */
    cyg_alarm           *alarm          /* put alarm here                    */
)
{
    CYG_ASSERT_SIZES( cyg_alarm, Cyg_Alarm );

    Cyg_Alarm *t = new((void *)alarm) Cyg_Alarm (
        (Cyg_Counter *)counter,
        (cyg_alarm_fn *)alarmfn,
        (CYG_ADDRWORD)data
    );
    t=t;

    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)alarm;
}

/* Disable alarm, detach from counter and invalidate handles                 */
externC void cyg_alarm_delete( cyg_handle_t alarm)
{
    ((Cyg_Alarm *)alarm)->~Cyg_Alarm();
}

externC void cyg_alarm_initialize(
    cyg_handle_t        alarm,
    cyg_tick_count_t    trigger,        /* Absolute trigger time             */
    cyg_tick_count_t    interval        /* Relative retrigger interval       */
)
{
    ((Cyg_Alarm *)alarm)->initialize(
        (cyg_tick_count)trigger,
        (cyg_tick_count)interval);
}

externC void cyg_alarm_enable( cyg_handle_t alarm )
{
    ((Cyg_Alarm *)alarm)->enable();
}

externC void cyg_alarm_disable( cyg_handle_t alarm )
{
    ((Cyg_Alarm *)alarm)->disable();
}

/*---------------------------------------------------------------------------*/
/* Mail boxes                                                                */

externC void cyg_mbox_create(
    cyg_handle_t        *handle,
    cyg_mbox            *mbox
)
{
    CYG_ASSERT_SIZES( cyg_mbox, Cyg_Mbox );
    
    Cyg_Mbox *t = new((void *)mbox) Cyg_Mbox();
    t=t;

    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)mbox;
}

externC void cyg_mbox_delete(cyg_handle_t mbox)
{
    ((Cyg_Mbox *)mbox)->~Cyg_Mbox();
}

externC void *cyg_mbox_get(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->get();
}

#ifdef CYGFUN_KERNEL_THREADS_TIMER
void *cyg_mbox_timed_get(
    cyg_handle_t mbox,
    cyg_tick_count_t abstime
    )
{
    return ((Cyg_Mbox *)mbox)->get(abstime);
}
#endif

externC void *cyg_mbox_tryget(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->tryget();
}

externC void *cyg_mbox_peek_item(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->peek_item();
}

#ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
externC cyg_bool_t cyg_mbox_put(cyg_handle_t mbox, void *item)
{
    return ((Cyg_Mbox *)mbox)->put(item);
}

#ifdef CYGFUN_KERNEL_THREADS_TIMER
externC cyg_bool_t cyg_mbox_timed_put(
    cyg_handle_t mbox,
    void *item,
    cyg_tick_count_t abstime
    )
{
    return ((Cyg_Mbox *)mbox)->put(item, abstime);
}
#endif
#endif

externC cyg_bool_t cyg_mbox_tryput(cyg_handle_t mbox, void *item)
{
    return ((Cyg_Mbox *)mbox)->tryput(item);
}

externC cyg_count32 cyg_mbox_peek(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->peek();
}

externC cyg_bool_t cyg_mbox_waiting_to_get(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->waiting_to_get();
}

externC cyg_bool_t cyg_mbox_waiting_to_put(cyg_handle_t mbox)
{
    return ((Cyg_Mbox *)mbox)->waiting_to_put();
}


/*-----------------------------------------------------------------------*/
/* Memory pools                                                          */

/* Create a variable size memory pool */
externC void cyg_mempool_var_create(
    void            *base,              /* base of memory to use for pool */
    cyg_int32       size,               /* size of memory in bytes        */
    cyg_handle_t    *handle,            /* returned handle of memory pool */
    cyg_mempool_var *var                /* space to put pool structure in */
    )
{
    CYG_ASSERT_SIZES( cyg_mempool_var, Cyg_Mempool_Variable );

    Cyg_Mempool_Variable *t = new((void *)var) Cyg_Mempool_Variable (
        (cyg_uint8 *)base,
        size
    );
    t=t;

    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)var;
}

/* Delete variable size memory pool */
externC void cyg_mempool_var_delete(cyg_handle_t varpool)
{
    ((Cyg_Mempool_Variable *)varpool)->~Cyg_Mempool_Variable();
}

/* Allocates a block of length size.  This waits if the memory is not
   currently available.  */
externC void *cyg_mempool_var_alloc(cyg_handle_t varpool, cyg_int32 size)
{
    return ((Cyg_Mempool_Variable *)varpool)->alloc(size);
}

#ifdef CYGFUN_KERNEL_THREADS_TIMER

/* Allocates a block of length size.  This waits for up to delay
   ticks, if the memory is not already available.  NULL is returned if
   no memory is available. */
externC void *cyg_mempool_var_timed_alloc(
    cyg_handle_t     varpool,
    cyg_int32        size,
    cyg_tick_count_t abstime)
{
    return ((Cyg_Mempool_Variable *)varpool)->alloc(size, abstime);
}

#endif

/* Allocates a block of length size.  NULL is returned if no memory is
   available. */
externC void *cyg_mempool_var_try_alloc(
    cyg_handle_t varpool,
    cyg_int32    size)
{
    return ((Cyg_Mempool_Variable *)varpool)->try_alloc(size);
}

/* Frees memory back into variable size pool. */
externC void cyg_mempool_var_free(cyg_handle_t varpool, void *p)
{
    cyg_bool b;
    b = ((Cyg_Mempool_Variable *)varpool)->free((cyg_uint8 *)p, 0);
    CYG_ASSERT( b, "Bad free");
}


/* Returns true if there are any threads waiting for memory in the
   given memory pool. */
externC cyg_bool_t cyg_mempool_var_waiting(cyg_handle_t varpool)
{
    return ((Cyg_Mempool_Variable *)varpool)->waiting();
}

/* Puts information about a variable memory pool into the structure
   provided. */
externC void cyg_mempool_var_get_info(
    cyg_handle_t varpool,
    cyg_mempool_info *info)
{