statesimpl.h

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/*
 *  COPYRIGHT (c) 1989-2012.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#ifndef _RTEMS_SCORE_STATESIMPL_H
#define _RTEMS_SCORE_STATESIMPL_H

#include <rtems/score/states.h>
#include <rtems/score/basedefs.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 *  The following constants define the individual states which may be
 *  be used to compose and manipulate a thread's state.  More frequently used
 *  states should use lower value bits to ease the use of immediate values on
 *  RISC architectures.
 */

#define STATES_READY                           0x00000000

#define STATES_WAITING_FOR_MUTEX               0x00000001

#define STATES_WAITING_FOR_SEMAPHORE           0x00000002

#define STATES_WAITING_FOR_EVENT               0x00000004

#define STATES_WAITING_FOR_SYSTEM_EVENT        0x00000008

#define STATES_WAITING_FOR_MESSAGE             0x00000010

#define STATES_WAITING_FOR_CONDITION_VARIABLE  0x00000020

#define STATES_WAITING_FOR_FUTEX               0x00000040

#define STATES_WAITING_FOR_BSD_WAKEUP          0x00000080

#define STATES_WAITING_FOR_TIME                0x00000100

#define STATES_WAITING_FOR_PERIOD              0x00000200

#define STATES_WAITING_FOR_SIGNAL              0x00000400

#define STATES_WAITING_FOR_BARRIER             0x00000800

#define STATES_WAITING_FOR_RWLOCK              0x00001000

#define STATES_WAITING_FOR_JOIN_AT_EXIT        0x00002000

#define STATES_WAITING_FOR_JOIN                0x00004000

#define STATES_SUSPENDED                       0x00008000

#define STATES_WAITING_FOR_SEGMENT             0x00010000

#define STATES_LIFE_IS_CHANGING                0x00020000

#define STATES_DEBUGGER                        0x08000000

#define STATES_INTERRUPTIBLE_BY_SIGNAL         0x10000000

#define STATES_WAITING_FOR_RPC_REPLY           0x20000000

#define STATES_ZOMBIE                          0x40000000

#define STATES_DORMANT                         0x80000000

#define STATES_LOCALLY_BLOCKED ( STATES_WAITING_FOR_SEGMENT            | \
                                 STATES_WAITING_FOR_MESSAGE            | \
                                 STATES_WAITING_FOR_SEMAPHORE          | \
                                 STATES_WAITING_FOR_MUTEX              | \
                                 STATES_WAITING_FOR_CONDITION_VARIABLE | \
                                 STATES_WAITING_FOR_JOIN               | \
                                 STATES_WAITING_FOR_SIGNAL             | \
                                 STATES_WAITING_FOR_BARRIER            | \
                                 STATES_WAITING_FOR_BSD_WAKEUP         | \
                                 STATES_WAITING_FOR_FUTEX              | \
                                 STATES_WAITING_FOR_RWLOCK             )

#define STATES_BLOCKED         ( STATES_LOCALLY_BLOCKED         | \
                                 STATES_WAITING_FOR_TIME        | \
                                 STATES_WAITING_FOR_PERIOD      | \
                                 STATES_WAITING_FOR_EVENT       | \
                                 STATES_WAITING_FOR_RPC_REPLY   | \
                                 STATES_WAITING_FOR_SYSTEM_EVENT | \
                                 STATES_INTERRUPTIBLE_BY_SIGNAL )

#define STATES_ALL_SET 0xffffffff

RTEMS_INLINE_ROUTINE States_Control _States_Set (
  States_Control states_to_set,
  States_Control current_state
)
{
   return (current_state | states_to_set);
}

RTEMS_INLINE_ROUTINE States_Control _States_Clear (
  States_Control states_to_clear,
  States_Control current_state
)
{
   return (current_state & ~states_to_clear);
}

RTEMS_INLINE_ROUTINE bool _States_Is_ready (
  States_Control the_states
)
{
   return (the_states == STATES_READY);
}

RTEMS_INLINE_ROUTINE bool _States_Is_dormant (
  States_Control the_states
)
{
   return (the_states & STATES_DORMANT);
}

RTEMS_INLINE_ROUTINE bool _States_Is_suspended (
  States_Control the_states
)
{
   return (the_states & STATES_SUSPENDED);
}

RTEMS_INLINE_ROUTINE bool _States_Is_waiting_for_rpc_reply (
  States_Control the_states
)
{
   return (the_states & STATES_WAITING_FOR_RPC_REPLY);
}

RTEMS_INLINE_ROUTINE bool _States_Is_waiting_for_join_at_exit(
  States_Control the_states
)
{
   return ( the_states & STATES_WAITING_FOR_JOIN_AT_EXIT ) != 0;
}

RTEMS_INLINE_ROUTINE bool _States_Is_interruptible_by_signal (
  States_Control the_states
)
{
   return (the_states & STATES_INTERRUPTIBLE_BY_SIGNAL);
}

RTEMS_INLINE_ROUTINE bool _States_Is_locally_blocked (
  States_Control the_states
)
{
   return (the_states & STATES_LOCALLY_BLOCKED);
}

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */