1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Thread-Specific Data Key Create |
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5 | * @ingroup POSIXAPI |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2010. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.com/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <errno.h> |
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22 | #include <limits.h> |
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23 | #include <pthread.h> |
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24 | #include <string.h> |
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25 | |
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26 | #include <rtems/system.h> |
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27 | #include <rtems/score/thread.h> |
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28 | #include <rtems/score/wkspace.h> |
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29 | #include <rtems/posix/key.h> |
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30 | |
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31 | /** |
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32 | * 17.1.1 Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163 |
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33 | */ |
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34 | int pthread_key_create( |
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35 | pthread_key_t *key, |
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36 | void (*destructor)( void * ) |
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37 | ) |
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38 | { |
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39 | POSIX_Keys_Control *the_key; |
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40 | void *table; |
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41 | uint32_t the_api; |
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42 | uint32_t bytes_to_allocate; |
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43 | |
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44 | |
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45 | _Thread_Disable_dispatch(); |
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46 | |
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47 | the_key = _POSIX_Keys_Allocate(); |
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48 | |
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49 | if ( !the_key ) { |
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50 | _Thread_Enable_dispatch(); |
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51 | return EAGAIN; |
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52 | } |
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53 | |
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54 | the_key->destructor = destructor; |
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55 | |
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56 | /* |
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57 | * This is a bit more complex than one might initially expect because |
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58 | * APIs are optional. |
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59 | * |
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60 | * NOTE: Currently RTEMS Classic API tasks are always enabled. |
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61 | */ |
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62 | for ( the_api = 1; the_api <= OBJECTS_APIS_LAST; the_api++ ) { |
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63 | the_key->Values[ the_api ] = NULL; |
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64 | |
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65 | #if defined(RTEMS_DEBUG) |
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66 | /* |
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67 | * Since the removal of ITRON, this cannot occur. |
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68 | */ |
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69 | if ( !_Objects_Information_table[ the_api ] ) |
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70 | continue; |
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71 | |
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72 | /* |
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73 | * Currently all managers are installed if the API is installed. |
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74 | * This would be a horrible implementation error. |
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75 | */ |
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76 | if (_Objects_Information_table[ the_api ][ 1 ] == NULL ) |
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77 | _Internal_error_Occurred( |
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78 | INTERNAL_ERROR_CORE, |
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79 | true, |
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80 | INTERNAL_ERROR_IMPLEMENTATION_KEY_CREATE_INCONSISTENCY |
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81 | ); |
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82 | #endif |
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83 | |
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84 | bytes_to_allocate = sizeof( void * ) * |
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85 | (_Objects_Information_table[ the_api ][ 1 ]->maximum + 1); |
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86 | table = _Workspace_Allocate( bytes_to_allocate ); |
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87 | if ( !table ) { |
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88 | _POSIX_Keys_Free_memory( the_key ); |
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89 | |
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90 | _POSIX_Keys_Free( the_key ); |
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91 | _Thread_Enable_dispatch(); |
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92 | return ENOMEM; |
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93 | } |
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94 | |
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95 | the_key->Values[ the_api ] = table; |
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96 | memset( table, '\0', bytes_to_allocate ); |
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97 | } |
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98 | |
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99 | _Objects_Open_u32( &_POSIX_Keys_Information, &the_key->Object, 0 ); |
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100 | *key = the_key->Object.id; |
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101 | _Thread_Enable_dispatch(); |
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102 | return 0; |
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103 | } |
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