score/src/threadtimeout.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreThread
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Thread_Continue() and _Thread_Timeout().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2008.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/threadimpl.h>
0043 #include <rtems/score/status.h>
0044
0045 void _Thread_Continue( Thread_Control *the_thread, Status_Control status )
0046 {
0047   Thread_queue_Context queue_context;
0048   Thread_Wait_flags    wait_flags;
0049   bool                 unblock;
0050
0051   _Thread_queue_Context_initialize( &queue_context );
0052   _Thread_queue_Context_clear_priority_updates( &queue_context );
0053   _Thread_Wait_acquire( the_thread, &queue_context );
0054
0055   wait_flags = _Thread_Wait_flags_get( the_thread );
0056
0057   if ( wait_flags != THREAD_WAIT_STATE_READY ) {
0058     Thread_Wait_flags wait_class;
0059     bool              success;
0060
0061     _Thread_Wait_cancel( the_thread, &queue_context );
0062
0063     the_thread->Wait.return_code = status;
0064
0065     wait_class = wait_flags & THREAD_WAIT_CLASS_MASK;
0066     success = _Thread_Wait_flags_try_change_release(
0067       the_thread,
0068       wait_class | THREAD_WAIT_STATE_INTEND_TO_BLOCK,
0069       THREAD_WAIT_STATE_READY
0070     );
0071
0072     if ( success ) {
0073       unblock = false;
0074     } else {
0075       _Assert(
0076         _Thread_Wait_flags_get( the_thread )
0077           == ( wait_class | THREAD_WAIT_STATE_BLOCKED )
0078       );
0079       _Thread_Wait_flags_set( the_thread, THREAD_WAIT_STATE_READY );
0080       unblock = true;
0081     }
0082   } else {
0083     unblock = false;
0084   }
0085
0086   _Thread_Wait_release( the_thread, &queue_context );
0087   _Thread_Priority_update( &queue_context );
0088
0089   if ( unblock ) {
0090     _Thread_Wait_tranquilize( the_thread );
0091     _Thread_Unblock( the_thread );
0092
0093 #if defined(RTEMS_MULTIPROCESSING)
0094     if ( !_Objects_Is_local_id( the_thread->Object.id ) ) {
0095       _Thread_MP_Free_proxy( the_thread );
0096     }
0097 #endif
0098   }
0099 }
0100
0101 void _Thread_Timeout( Watchdog_Control *the_watchdog )
0102 {
0103   Thread_Control *the_thread;
0104
0105   the_thread = RTEMS_CONTAINER_OF(
0106     the_watchdog,
0107     Thread_Control,
0108     Timer.Watchdog
0109   );
0110   _Thread_Continue( the_thread, STATUS_TIMEOUT );
0111 }