SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
enabled-by: true
functional-type: action
links: []
post-conditions:
- name: SendStatus
  states:
  - name: Ok
    test-code: |
      T_rsc_success( ctx->send_status );
    text: |
      The send event status shall be RTEMS_SUCCESSFUL.
  - name: InvId
    test-code: |
      T_rsc( ctx->send_status, RTEMS_INVALID_ID );
    text: |
      The send event status shall be RTEMS_INVALID_ID.
  test-epilogue: null
  test-prologue: null
- name: ReceiveStatus
  states:
  - name: None
    test-code: |
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNKNOWN );
      T_eq_u32( GetPendingEvents( ctx ), 0 );
    text: |
      The receiver task shall not have pending events.
  - name: Pending
    test-code: |
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNKNOWN );
      T_eq_u32( GetPendingEvents( ctx ), ctx->events_to_send );
    text: |
      The receiver task shall have all events sent pending.
  - name: Timeout
    test-code: |
      T_rsc( ctx->receive_status, RTEMS_TIMEOUT );
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNKNOWN );
      T_eq_u32( GetPendingEvents( ctx ), ctx->events_to_send );
    text: |
      The receive event status shall be ${../../status/if/timeout:/name}.  The
      receiver task shall have all events sent after the timeout pending.
  - name: Satisfied
    test-code: |
      T_rsc( ctx->receive_status, RTEMS_SUCCESSFUL );

      if ( ctx->receive_type != RECEIVE_NORMAL ) {
        T_eq_int( ctx->receive_condition_state, RECEIVE_COND_SATSIFIED );
      }

      T_eq_u32( ctx->received_events, ctx->events_to_send & INPUT_EVENTS );
      T_eq_u32( GetPendingEvents( ctx ), ctx->events_to_send & ~INPUT_EVENTS );
    text: |
      The receive event status shall be ${../../status/if/successful:/name}.
      The receiver task shall receive all events sent which are an element of
      the input events.  The receiver task shall have all events sent which are
      not an element of the input events pending.
  - name: Unsatisfied
    test-code: |
      T_rsc( ctx->receive_status, RTEMS_UNSATISFIED );
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNKNOWN );
      T_eq_u32( GetPendingEvents( ctx ), ctx->events_to_send );
    text: |
      The receive event status shall be ${../../status/if/unsatisfied:/name}.
      The receiver task shall have all events sent pending.
  - name: Blocked
    test-code: |
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNSATISFIED );
      T_eq_u32( ctx->unsatisfied_pending, ctx->events_to_send );
    text: |
      The receiver task shall remain blocked waiting for events after the
      directive call.  The receiver task shall have all events sent pending.
  - name: InvAddr
    test-code: |
      T_rsc( ctx->receive_status, RTEMS_INVALID_ADDRESS );
      T_eq_int( ctx->receive_condition_state, RECEIVE_COND_UNKNOWN );
      T_eq_u32( GetPendingEvents( ctx ), ctx->events_to_send );
    text: |
      The receive event status shall be
      ${../../status/if/invalid-address:/name}.  The receiver task shall have
      all events sent pending.
  test-epilogue: null
  test-prologue: null
- name: SenderPreemption
  states:
  - name: 'No'
    test-code: |
      /*
       * There may be a thread switch to the runner thread if the sender thread
       * was on another scheduler instance.
       */

      T_le_sz( log->header.recorded, 1 );

      for ( i = 0; i < log->header.recorded; ++i ) {
        T_ne_u32( log->events[ i ].executing, ctx->worker_id );
        T_eq_u32( log->events[ i ].heir, ctx->runner_id );
      }
    text: |
      When the sender task calls the directive to send the events, the sender
      task shall not be preempted as a result of the call.
  - name: 'Yes'
    test-code: |
      T_eq_sz( log->header.recorded, 2 );
      T_eq_u32( log->events[ 0 ].heir, ctx->runner_id );
      T_eq_u32( log->events[ 1 ].heir, ctx->worker_id );
    text: |
      When the sender task calls the directive to send the events, the sender
      task shall be preempted as a result of the call.
  test-epilogue: null
  test-prologue: |
    const T_thread_switch_log_4 *log;
    size_t                       i;

    log = &ctx->thread_switch_log;
pre-conditions:
- name: Id
  states:
  - name: InvId
    test-code: |
      ctx->receiver_id = 0xffffffff;
      ctx->sender_type = SENDER_SELF;
    text: |
      While the id parameter of the send directive is not associated with a
      task.
  - name: Task
    test-code: |
      ctx->receiver_id = ctx->runner_id;
    text: |
      While the id parameter of the send directive is is associated with a
      task.
  test-epilogue: null
  test-prologue: null
- name: Send
  states:
  - name: Zero
    test-code: |
      ctx->events_to_send = 0;
    text: |
      While the event set sent is the empty.
  - name: Unrelated
    test-code: |
      ctx->events_to_send = RTEMS_EVENT_7;
    text: |
      While the event set sent is unrelated to the event receive condition.
  - name: Any
    test-code: |
      ctx->events_to_send = RTEMS_EVENT_5;
    text: |
      While the event set sent is contain at least one but not all events of
      the event receive condition.
  - name: All
    test-code: |
      ctx->events_to_send = RTEMS_EVENT_5 | RTEMS_EVENT_23;
    text: |
      While the event set sent is contain all events of the event receive
      condition.
  - name: MixedAny
    test-code: |
      ctx->events_to_send = RTEMS_EVENT_5 | RTEMS_EVENT_7;
    text: |
      While the event set sent is contain at least one but not all events of
      the event receive condition and at least one unrelated event.
  - name: MixedAll
    test-code: |
      ctx->events_to_send = RTEMS_EVENT_5 | RTEMS_EVENT_7 | RTEMS_EVENT_23;
    text: |
      While the event set sent is contain all events of the event receive
      condition and at least one unrelated event.
  test-epilogue: null
  test-prologue: null
- name: ReceiverState
  states:
  - name: InvAddr
    test-code: |
      ctx->sender_type = SENDER_SELF;
      ctx->receive_type = RECEIVE_NORMAL;
      ctx->received_events_parameter = NULL;
    text: |
      While the receiver task calls the receive directive with the event set to
      receive parameter set to ${/c/if/null:/name}.
  - name: NotWaiting
    test-code: |
      ctx->sender_type = SENDER_SELF;
      ctx->receive_type = RECEIVE_SKIP;
    text: |
      While the receiver task is not waiting for events.
  - name: Poll
    test-code: |
      ctx->sender_type = SENDER_SELF;
      ctx->receive_type = RECEIVE_NORMAL;
      ctx->receive_option_set |= RTEMS_NO_WAIT;
    text: |
      While the receiver task polls for events.
  - name: Timeout
    test-code: |
      ctx->sender_type = SENDER_SELF_2;
      ctx->receive_type = RECEIVE_NORMAL;
      ctx->receive_timeout = 1;
    text: |
      While the receiver task waited for events with a timeout which
      occurred.
  - name: Lower
    test-code: |
      ctx->sender_type = SENDER_WORKER;
      ctx->sender_prio = PRIO_HIGH;
      ctx->receive_type = RECEIVE_NORMAL;
    text: |
      While the receiver task is blocked waiting for events and the receiver
      task shall have a lower priority than the sender task.
  - name: Equal
    test-code: |
      ctx->sender_type = SENDER_WORKER;
      ctx->sender_prio = PRIO_NORMAL;
      ctx->receive_type = RECEIVE_NORMAL;
    text: |
      While the receiver task is blocked waiting for events and the receiver
      task shall have a priority equal to the sender task.
  - name: Higher
    test-code: |
      ctx->sender_type = SENDER_WORKER;
      ctx->sender_prio = PRIO_LOW;
      ctx->receive_type = RECEIVE_NORMAL;
    text: |
      While the receiver task is blocked waiting for events and the receiver
      task shall have a higher priority than the sender task.
  - name: Other
    test-code: |
      ctx->sender_type = SENDER_WORKER;
      ctx->sender_prio = PRIO_OTHER;
      ctx->receive_type = RECEIVE_NORMAL;
    text: |
      While the receiver task is blocked waiting for events and the receiver
      task shall be on another scheduler instance than the sender task.
  - name: Intend
    test-code: |
      ctx->sender_type = SENDER_INTERRUPT;
      ctx->receive_type = RECEIVE_INTERRUPT;
    text: |
      While the receiver task intends to block for waiting for events.
  test-epilogue: null
  test-prologue: null
- name: Satisfy
  states:
  - name: All
    test-code: |
      ctx->receive_option_set |= RTEMS_EVENT_ALL;
    text: |
      While the receiver task is interested in all input events.
  - name: Any
    test-code: |
      ctx->receive_option_set |= RTEMS_EVENT_ANY;
    text: |
      While the receiver task is interested in any input event.
  test-epilogue: null
  test-prologue: null
rationale: null
references: []
requirement-type: functional
skip-reasons:
  NoOtherScheduler: |
    In non-SMP configurations, there exists exactly one scheduler instance.
test-action: |
  if ( ctx->sender_type == SENDER_SELF ) {
    SendAction( ctx );
  } else if ( ctx->sender_type == SENDER_WORKER ) {
    Wakeup( ctx->worker_wakeup );
  }

  if ( ctx->receive_type == RECEIVE_NORMAL ) {
    ctx->receive_status = ( *ctx->receive )(
      INPUT_EVENTS,
      ctx->receive_option_set,
      ctx->receive_timeout,
      ctx->received_events_parameter
    );
  } else if ( ctx->receive_type == RECEIVE_INTERRUPT ) {
    T_interrupt_test_state state;

    state = T_interrupt_test( &InterruptConfig, ctx );
    T_eq_int( state, T_INTERRUPT_TEST_DONE );
  }

  if ( ctx->sender_type == SENDER_SELF_2 ) {
    SendAction( ctx );
  } else if ( ctx->sender_type == SENDER_WORKER ) {
    rtems_task_priority prio;

    Wait( ctx->runner_wakeup );
    prio = SetPriority( ctx->worker_id, PRIO_LOW );
    T_eq_u32( prio, PRIO_HIGH );
  }
test-brief: null
test-cleanup: |
  rtems_status_code sc;
  rtems_event_set   events;

  events = 0;
  sc = ( *ctx->receive )(
    RTEMS_ALL_EVENTS,
    RTEMS_NO_WAIT | RTEMS_EVENT_ANY,
    0,
    &events
  );
  if ( sc == RTEMS_SUCCESSFUL ) {
    T_quiet_ne_u32( events, 0 );
  } else {
    T_quiet_rsc( sc, RTEMS_UNSATISFIED );
    T_quiet_eq_u32( events, 0 );
  }
test-context:
- brief: |
    This member defines the sender type to perform the event send action.
  description: null
  member: SenderTypes sender_type
- brief: |
    This member defines the sender task priority.
  description: null
  member: rtems_task_priority sender_prio
- brief: |
    This member defines the receiver ID used for the event send action.
  description: null
  member: rtems_id receiver_id
- brief: |
    This member defines the events to send for the event send action.
  description: null
  member: rtems_event_set events_to_send
- brief: |
    This member contains the status of the event send action.
  description: null
  member: rtems_status_code send_status
- brief: |
    This member contains the scheduler ID of the runner task.
  description: null
  member: ReceiveTypes receive_type
- brief: |
    This member defines the option set used for the event receive action.
  description: null
  member: rtems_option receive_option_set
- brief: |
    This member defines the timeout used for the event receive action.
  description: null
  member: rtems_interval receive_timeout
- brief: |
    This member contains the events received by the event receive action.
  description: null
  member: rtems_event_set received_events
- brief: |
    This member references the event set received by the event receive action
    or is NULL.
  description: null
  member: rtems_event_set *received_events_parameter
- brief: |
    This member contains the status of the event receive action.
  description: null
  member: rtems_status_code receive_status
- brief: |
    This member contains the event condition state of the receiver task after
    the event send action.
  description: null
  member: ReceiveConditionStates receive_condition_state
- brief: |
    This member contains the pending events after an event send action which
    did not satisify the event condition of the receiver.
  description: null
  member: rtems_event_set unsatisfied_pending
- brief: |
    This member contains the TCB of the runner task.
  description: null
  member: Thread_Control *runner_thread
- brief: |
    This member contains the ID of the runner task.
  description: null
  member: rtems_id runner_id
- brief: |
    This member contains the task ID of the worker task.
  description: null
  member: rtems_id worker_id
- brief: |
    This member contains the ID of the semaphore used to wake up the worker
    task.
  description: null
  member: rtems_id worker_wakeup
- brief: |
    This member contains the ID of the semaphore used to wake up the runner
    task.
  description: null
  member: rtems_id runner_wakeup
- brief: |
    This member contains the scheduler ID of scheduler used by the runner task.
  description: null
  member: rtems_id runner_sched
- brief: |
    This member contains the scheduler ID of another scheduler which is not
    used by the runner task.
  description: null
  member: rtems_id other_sched
- brief: |
    This member contains the thread switch log.
  description: null
  member: T_thread_switch_log_4 thread_switch_log
test-context-support: |
  #define PRIO_OTHER UINT32_MAX

  typedef enum {
    SENDER_NONE,
    SENDER_SELF,
    SENDER_SELF_2,
    SENDER_WORKER,
    SENDER_INTERRUPT
  } SenderTypes;

  typedef enum {
    RECEIVE_SKIP,
    RECEIVE_NORMAL,
    RECEIVE_INTERRUPT
  } ReceiveTypes;

  typedef enum {
    RECEIVE_COND_UNKNOWN,
    RECEIVE_COND_SATSIFIED,
    RECEIVE_COND_UNSATISFIED
  } ReceiveConditionStates;
test-description: null
test-header:
  code: null
  includes:
  - rtems.h
  - rtems/score/thread.h
  local-includes: []
  run-params:
  - description: |
      is the event send handler.
    dir: null
    name: send
    specifier: rtems_status_code ( *${.:name} )( rtems_id, rtems_event_set )
  - description: |
      is the event receive handler.
    dir: null
    name: receive
    specifier: |
      rtems_status_code ( *${.:name} )( rtems_event_set, rtems_option, rtems_interval, rtems_event_set * )
  - description: |
      is the get pending events handler.
    dir: null
    name: get_pending_events
    specifier: rtems_event_set ( *${.:name} )( Thread_Control * )
  - description: |
      is the thread wait class.
    dir: null
    name: wait_class
    specifier: unsigned int ${.:name}
  - description: |
      is the thread waiting for event state.
    dir: null
    name: waiting_for_event
    specifier: int ${.:name}
  target: testsuites/validation/tr-event-send-receive.h
test-includes:
- rtems/score/threadimpl.h
test-local-includes:
- tc-support.h
- tr-event-send-receive.h
test-prepare: |
  ctx->events_to_send = 0;
  ctx->send_status = RTEMS_INCORRECT_STATE;
  ctx->received_events = 0xffffffff;
  ctx->received_events_parameter = &ctx->received_events;
  ctx->receive_option_set = 0;
  ctx->receive_timeout = RTEMS_NO_TIMEOUT;
  ctx->sender_type = SENDER_NONE;
  ctx->sender_prio = PRIO_NORMAL;
  ctx->receive_type = RECEIVE_SKIP;
  ctx->receive_condition_state = RECEIVE_COND_UNKNOWN;
  ctx->unsatisfied_pending = 0xffffffff;
  memset( &ctx->thread_switch_log, 0, sizeof( ctx->thread_switch_log ) );
  T_eq_u32( GetPendingEvents( ctx ), 0 );
  _Thread_Wait_flags_set( ctx->runner_thread, THREAD_WAIT_FLAGS_INITIAL );
test-setup:
  brief: null
  code: |
    rtems_status_code sc;

    memset( ctx, 0, sizeof( *ctx ) );
    ctx->runner_thread = _Thread_Get_executing();
    ctx->runner_id = ctx->runner_thread->Object.id;
    ctx->worker_wakeup = CreateWakeupSema();
    ctx->runner_wakeup = CreateWakeupSema();

    sc = rtems_task_get_scheduler( RTEMS_SELF, &ctx->runner_sched );
    T_rsc_success( sc );

    #if defined(RTEMS_SMP)
    sc = rtems_scheduler_ident_by_processor( 1, &ctx->other_sched );
    T_rsc_success( sc );
    T_ne_u32( ctx->runner_sched, ctx->other_sched );
    #endif

    SetSelfPriority( PRIO_NORMAL );
    ctx->worker_id = CreateTask( "WORK", PRIO_LOW );
    StartTask( ctx->worker_id, Worker, ctx );
  description: null
test-stop: null
test-support: |
  #define INPUT_EVENTS ( RTEMS_EVENT_5 | RTEMS_EVENT_23 )

  typedef RtemsEventReqSendReceive_Context Context;

  static rtems_id CreateWakeupSema( void )
  {
    rtems_status_code sc;
    rtems_id          id;

    sc = rtems_semaphore_create(
      rtems_build_name( 'W', 'K', 'U', 'P' ),
      0,
      RTEMS_SIMPLE_BINARY_SEMAPHORE,
      0,
      &id
    );
    T_assert_rsc_success( sc );

    return id;
  }

  static void DeleteWakeupSema( rtems_id id )
  {
    if ( id != 0 ) {
      rtems_status_code sc;

      sc = rtems_semaphore_delete( id );
      T_rsc_success( sc );
    }
  }

  static void Wait( rtems_id id )
  {
    rtems_status_code sc;

    sc = rtems_semaphore_obtain( id, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
    T_quiet_rsc_success( sc );
  }

  static void Wakeup( rtems_id id )
  {
    rtems_status_code sc;

    sc = rtems_semaphore_release( id );
    T_quiet_rsc_success( sc );
  }

  static bool BlockedForEvent( Context *ctx, Thread_Wait_flags flags )
  {
    return flags == ( ctx->wait_class | THREAD_WAIT_STATE_BLOCKED );
  }

  static bool IntendsToBlockForEvent( Context *ctx, Thread_Wait_flags flags )
  {
    return flags == ( ctx->wait_class | THREAD_WAIT_STATE_INTEND_TO_BLOCK );
  }

  static bool EventReadyAgain( Context *ctx, Thread_Wait_flags flags )
  {
    return flags == ( ctx->wait_class | THREAD_WAIT_STATE_READY_AGAIN );
  }

  static bool IsSatisfiedFlags( Context *ctx )
  {
    return EventReadyAgain(
      ctx,
      _Thread_Wait_flags_get( ctx->runner_thread )
    );
  }

  static bool IsSatisfiedState( Context *ctx )
  {
    return ctx->runner_thread->current_state != ctx->waiting_for_event;
  }

  static void SendAction( Context *ctx )
  {
    T_thread_switch_log *log;

    log = T_thread_switch_record_4( &ctx->thread_switch_log );
    T_quiet_null( log );
    ctx->send_status = ( *ctx->send )( ctx->receiver_id, ctx->events_to_send );
    log = T_thread_switch_record( NULL );
    T_quiet_eq_ptr( &log->header, &ctx->thread_switch_log.header );
  }

  static void Send(
    Context *ctx,
    bool  ( *is_satsified )( Context * )
  )
  {
    SendAction( ctx );

    if ( ( *is_satsified )( ctx ) ) {
      ctx->receive_condition_state = RECEIVE_COND_SATSIFIED;
    } else {
      rtems_status_code sc;
      rtems_event_set pending;
      rtems_event_set missing;

      ctx->receive_condition_state = RECEIVE_COND_UNSATISFIED;
      pending = ( *ctx->get_pending_events )( ctx->runner_thread );
      ctx->unsatisfied_pending = pending;

      missing = INPUT_EVENTS & ~ctx->events_to_send;
      T_ne_u32( missing, 0 );
      sc = ( *ctx->send )( ctx->runner_id, missing );
      T_rsc_success( sc );

      pending = ( *ctx->get_pending_events )( ctx->runner_thread );
      T_eq_u32( pending, ctx->events_to_send & ~INPUT_EVENTS );
    }
  }

  static void Worker( rtems_task_argument arg )
  {
    Context *ctx;

    ctx = (Context *) arg;

    while ( true ) {
      rtems_status_code    sc;
      rtems_task_priority  prio;
      T_thread_switch_log *log;

      Wait( ctx->worker_wakeup );

      switch ( ctx->sender_prio ) {
        case PRIO_NORMAL:
        case PRIO_HIGH:
          prio = SetSelfPriority( ctx->sender_prio );
          T_eq_u32( prio, PRIO_LOW );
          break;
        case PRIO_OTHER:
          log = T_thread_switch_record_4( &ctx->thread_switch_log );
          T_null( log );
          sc = rtems_task_set_scheduler(
            RTEMS_SELF,
            ctx->other_sched,
            PRIO_LOW
          );
          T_rsc_success( sc );

          /*
           * Make sure the context switch to the IDLE thread on the previous
           * CPU is recorded, otherwise the preemption check may sporadically
           * fail on some targets.
           */
          while (ctx->thread_switch_log.header.recorded < 2) {
            RTEMS_COMPILER_MEMORY_BARRIER();
          }

          log = T_thread_switch_record( NULL );
          T_eq_ptr( &log->header, &ctx->thread_switch_log.header );
          break;
        case PRIO_LOW:
          break;
      }

      Send( ctx, IsSatisfiedState );

      sc = rtems_task_set_scheduler(
        RTEMS_SELF,
        ctx->runner_sched,
        PRIO_HIGH
      );
      T_rsc_success( sc );

      Wakeup( ctx->runner_wakeup );
    }
  }

  static rtems_event_set GetPendingEvents( Context *ctx )
  {
    rtems_event_set pending;
    rtems_status_code sc;

    sc = ( *ctx->receive )(
      RTEMS_PENDING_EVENTS,
      RTEMS_DEFAULT_OPTIONS,
      0,
      &pending
    );
    T_quiet_rsc_success( sc );

    return pending;
  }

  static void RtemsEventReqSendReceive_Cleanup( Context *ctx );

  static void InterruptPrepare( void *arg )
  {
    RtemsEventReqSendReceive_Cleanup( arg );
  }

  static void InterruptAction( void *arg )
  {
    Context *ctx;

    ctx = arg;
    ctx->receive_status = ( *ctx->receive )(
      INPUT_EVENTS,
      ctx->receive_option_set,
      ctx->receive_timeout,
      &ctx->received_events
    );
    T_quiet_rsc_success( ctx->receive_status );
  }

  static void InterruptContinue( Context *ctx )
  {
    rtems_status_code sc;

    sc = ( *ctx->send )( ctx->receiver_id, INPUT_EVENTS );
    T_quiet_rsc_success( sc );
  }

  static T_interrupt_test_state Interrupt( void *arg )
  {
    Context                *ctx;
    Thread_Wait_flags       flags;
    T_interrupt_test_state  next_state;
    T_interrupt_test_state  previous_state;

    ctx = arg;
    flags = _Thread_Wait_flags_get( ctx->runner_thread );

    if ( IntendsToBlockForEvent( ctx, flags ) ) {
      next_state = T_INTERRUPT_TEST_DONE;
    } else if ( BlockedForEvent( ctx, flags ) ) {
      next_state = T_INTERRUPT_TEST_LATE;
    } else {
      next_state = T_INTERRUPT_TEST_EARLY;
    }

    previous_state = T_interrupt_test_change_state(
      T_INTERRUPT_TEST_ACTION,
      next_state
    );

    if ( previous_state == T_INTERRUPT_TEST_ACTION ) {
      if ( next_state == T_INTERRUPT_TEST_DONE ) {
        Send( ctx, IsSatisfiedFlags );
      } else {
        InterruptContinue( ctx );
      }
    }

    return next_state;
  }

  static const T_interrupt_test_config InterruptConfig = {
    .prepare = InterruptPrepare,
    .action = InterruptAction,
    .interrupt = Interrupt,
    .max_iteration_count = 10000
  };
test-target: testsuites/validation/tr-event-send-receive.c
test-teardown:
  brief: null
  code: |
    DeleteTask( ctx->worker_id );
    DeleteWakeupSema( ctx->worker_wakeup );
    DeleteWakeupSema( ctx->runner_wakeup );
    RestoreRunnerPriority();
  description: null
text: ${.:text-template}
transition-map:
- enabled-by: true
  post-conditions:
    ReceiveStatus: None
    SendStatus: InvId
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - InvId
    ReceiverState: N/A
    Satisfy: N/A
    Send: N/A
- enabled-by: true
  post-conditions:
    ReceiveStatus: Pending
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - InvAddr
    Satisfy: N/A
    Send: all
- enabled-by: true
  post-conditions:
    ReceiveStatus: Pending
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - NotWaiting
    Satisfy: N/A
    Send: all
- enabled-by: true
  post-conditions:
    ReceiveStatus: Timeout
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Timeout
    Satisfy: all
    Send: all
- enabled-by: true
  post-conditions:
    ReceiveStatus: Unsatisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Poll
    Satisfy: all
    Send:
    - Zero
    - Unrelated
- enabled-by: true
  post-conditions:
    ReceiveStatus: Blocked
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Lower
    - Equal
    - Higher
    - Intend
    Satisfy: all
    Send:
    - Unrelated
    - Zero
- enabled-by: true
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'Yes'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Higher
    Satisfy: all
    Send:
    - All
    - MixedAll
- enabled-by: true
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Poll
    - Lower
    - Equal
    - Intend
    Satisfy: all
    Send:
    - All
    - MixedAll
- enabled-by: true
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'Yes'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Higher
    Satisfy:
    - Any
    Send:
    - Any
    - MixedAny
- enabled-by: true
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Poll
    - Lower
    - Equal
    - Intend
    Satisfy:
    - Any
    Send:
    - Any
    - MixedAny
- enabled-by: true
  post-conditions:
    ReceiveStatus: Unsatisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Poll
    Satisfy:
    - All
    Send:
    - Any
    - MixedAny
- enabled-by: true
  post-conditions:
    ReceiveStatus: Blocked
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Lower
    - Equal
    - Higher
    - Intend
    Satisfy:
    - All
    Send:
    - Any
    - MixedAny
- enabled-by: true
  post-conditions: NoOtherScheduler
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Other
    Satisfy: all
    Send: all
- enabled-by: RTEMS_SMP
  post-conditions:
    ReceiveStatus: Blocked
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Other
    Satisfy: all
    Send:
    - Unrelated
    - Zero
- enabled-by: RTEMS_SMP
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Other
    Satisfy: all
    Send:
    - All
    - MixedAll
- enabled-by: RTEMS_SMP
  post-conditions:
    ReceiveStatus: Satisfied
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Other
    Satisfy:
    - Any
    Send:
    - Any
    - MixedAny
- enabled-by: RTEMS_SMP
  post-conditions:
    ReceiveStatus: Blocked
    SendStatus: Ok
    SenderPreemption: 'No'
  pre-conditions:
    Id:
    - Task
    ReceiverState:
    - Other
    Satisfy:
    - All
    Send:
    - Any
    - MixedAny
type: requirement