1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSImplClassicBarrier |
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7 | * |
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8 | * @brief This source file contains the implementation of |
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9 | * rtems_barrier_create() and the Barrier Manager system initialization. |
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10 | */ |
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11 | |
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12 | /* |
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13 | * COPYRIGHT (c) 1989-2006. |
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14 | * On-Line Applications Research Corporation (OAR). |
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15 | * |
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16 | * Redistribution and use in source and binary forms, with or without |
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17 | * modification, are permitted provided that the following conditions |
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18 | * are met: |
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19 | * 1. Redistributions of source code must retain the above copyright |
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20 | * notice, this list of conditions and the following disclaimer. |
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21 | * 2. Redistributions in binary form must reproduce the above copyright |
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22 | * notice, this list of conditions and the following disclaimer in the |
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23 | * documentation and/or other materials provided with the distribution. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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35 | * POSSIBILITY OF SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | #ifdef HAVE_CONFIG_H |
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39 | #include "config.h" |
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40 | #endif |
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41 | |
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42 | #include <rtems/rtems/barrierimpl.h> |
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43 | #include <rtems/rtems/status.h> |
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44 | #include <rtems/rtems/support.h> |
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45 | #include <rtems/rtems/attrimpl.h> |
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46 | #include <rtems/score/isr.h> |
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47 | #include <rtems/sysinit.h> |
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48 | |
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49 | rtems_status_code rtems_barrier_create( |
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50 | rtems_name name, |
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51 | rtems_attribute attribute_set, |
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52 | uint32_t maximum_waiters, |
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53 | rtems_id *id |
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54 | ) |
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55 | { |
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56 | Barrier_Control *the_barrier; |
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57 | uint32_t maximum_count; |
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58 | |
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59 | if ( !rtems_is_name_valid( name ) ) { |
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60 | return RTEMS_INVALID_NAME; |
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61 | } |
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62 | |
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63 | if ( id == NULL ) { |
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64 | return RTEMS_INVALID_ADDRESS; |
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65 | } |
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66 | |
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67 | if ( _Attributes_Is_barrier_automatic( attribute_set ) ) { |
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68 | if ( maximum_waiters == 0 ) { |
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69 | return RTEMS_INVALID_NUMBER; |
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70 | } |
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71 | |
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72 | maximum_count = maximum_waiters; |
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73 | } else { |
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74 | maximum_count = CORE_BARRIER_MANUAL_RELEASE_MAXIMUM_COUNT; |
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75 | } |
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76 | |
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77 | the_barrier = _Barrier_Allocate(); |
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78 | |
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79 | if ( the_barrier == NULL ) { |
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80 | _Objects_Allocator_unlock(); |
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81 | return RTEMS_TOO_MANY; |
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82 | } |
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83 | |
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84 | _CORE_barrier_Initialize( &the_barrier->Barrier, maximum_count ); |
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85 | |
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86 | *id = _Objects_Open_u32( &_Barrier_Information, &the_barrier->Object, name ); |
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87 | _Objects_Allocator_unlock(); |
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88 | return RTEMS_SUCCESSFUL; |
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89 | } |
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90 | |
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91 | static void _Barrier_Manager_initialization( void ) |
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92 | { |
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93 | _Objects_Initialize_information( &_Barrier_Information ); |
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94 | } |
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95 | |
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96 | RTEMS_SYSINIT_ITEM( |
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97 | _Barrier_Manager_initialization, |
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98 | RTEMS_SYSINIT_CLASSIC_BARRIER, |
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99 | RTEMS_SYSINIT_ORDER_MIDDLE |
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100 | ); |
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