1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Deletes Thread-specific Data Key Previously Returned by keycreate.c |
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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) 1989-2007. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * Copyright (c) 2016 embedded brains GmbH. |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.org/license/LICENSE. |
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16 | */ |
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17 | |
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18 | #if HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <rtems/posix/keyimpl.h> |
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23 | |
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24 | #include <errno.h> |
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25 | |
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26 | static void _POSIX_Keys_Destroy( POSIX_Keys_Control *the_key ) |
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27 | { |
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28 | _Objects_Close( &_POSIX_Keys_Information, &the_key->Object ); |
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29 | |
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30 | while ( true ) { |
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31 | POSIX_Keys_Key_value_pair *key_value_pair; |
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32 | ISR_lock_Context lock_context; |
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33 | Thread_Control *the_thread; |
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34 | |
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35 | key_value_pair = (POSIX_Keys_Key_value_pair *) |
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36 | _Chain_Get_unprotected( &the_key->Key_value_pairs ); |
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37 | if ( key_value_pair == NULL ) { |
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38 | break; |
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39 | } |
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40 | |
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41 | the_thread = key_value_pair->thread; |
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42 | _POSIX_Keys_Key_value_acquire( the_thread, &lock_context ); |
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43 | _RBTree_Extract( |
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44 | &the_thread->Keys.Key_value_pairs, |
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45 | &key_value_pair->Lookup_node |
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46 | ); |
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47 | _POSIX_Keys_Key_value_release( the_thread, &lock_context ); |
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48 | |
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49 | _POSIX_Keys_Key_value_free( key_value_pair ); |
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50 | } |
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51 | |
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52 | _Objects_Free( &_POSIX_Keys_Information, &the_key->Object ); |
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53 | } |
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54 | |
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55 | /* |
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56 | * 17.1.3 Thread-Specific Data Key Deletion, P1003.1c/Draft 10, p. 167 |
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57 | */ |
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58 | int pthread_key_delete( |
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59 | pthread_key_t key |
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60 | ) |
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61 | { |
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62 | POSIX_Keys_Control *the_key; |
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63 | int eno; |
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64 | |
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65 | _Objects_Allocator_lock(); |
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66 | |
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67 | the_key = _POSIX_Keys_Get( key ); |
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68 | if ( the_key != NULL ) { |
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69 | _POSIX_Keys_Destroy( the_key ); |
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70 | eno = 0; |
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71 | } else { |
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72 | eno = EINVAL; |
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73 | } |
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74 | |
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75 | _Objects_Allocator_unlock(); |
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76 | |
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77 | return eno; |
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78 | } |
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