1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup rtems_bsd_rtems |
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5 | * |
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6 | * @brief TODO. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2014, 2016 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Dornierstr. 4 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * Redistribution and use in source and binary forms, with or without |
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19 | * modification, are permitted provided that the following conditions |
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20 | * are met: |
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21 | * 1. Redistributions of source code must retain the above copyright |
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22 | * notice, this list of conditions and the following disclaimer. |
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23 | * 2. Redistributions in binary form must reproduce the above copyright |
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24 | * notice, this list of conditions and the following disclaimer in the |
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25 | * documentation and/or other materials provided with the distribution. |
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26 | * |
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27 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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37 | * SUCH DAMAGE. |
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38 | */ |
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39 | |
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40 | #include <machine/rtems-bsd-kernel-space.h> |
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41 | #include <machine/rtems-bsd-muteximpl.h> |
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42 | |
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43 | #include <rtems/score/schedulerimpl.h> |
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44 | |
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45 | void |
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46 | rtems_bsd_mutex_lock_more(struct lock_object *lock, rtems_bsd_mutex *m, |
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47 | Thread_Control *owner, Thread_Control *executing, |
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48 | Thread_queue_Context *queue_context) |
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49 | { |
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50 | if (owner == executing) { |
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51 | BSD_ASSERT(lock->lo_flags & LO_RECURSABLE); |
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52 | ++m->nest_level; |
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53 | |
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54 | _Thread_queue_Release(&m->queue, queue_context); |
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55 | } else { |
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56 | _Thread_queue_Context_set_thread_state(queue_context, |
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57 | STATES_WAITING_FOR_MUTEX); |
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58 | _Thread_queue_Context_set_enqueue_do_nothing_extra( |
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59 | queue_context); |
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60 | _Thread_queue_Context_set_deadlock_callout(queue_context, |
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61 | _Thread_queue_Deadlock_fatal); |
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62 | _Thread_queue_Enqueue(&m->queue.Queue, |
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63 | RTEMS_BSD_MUTEX_TQ_OPERATIONS, executing, queue_context); |
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64 | } |
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65 | } |
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