1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Executes a thread's cancellation handlers |
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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) 1989-2008. |
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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.org/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 <pthread.h> |
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22 | |
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23 | #include <rtems/score/thread.h> |
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24 | #include <rtems/score/threaddispatch.h> |
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25 | #include <rtems/posix/cancel.h> |
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26 | #include <rtems/posix/threadsup.h> |
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27 | |
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28 | #ifndef HAVE_STRUCT__PTHREAD_CLEANUP_CONTEXT |
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29 | |
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30 | #include <rtems/score/chainimpl.h> |
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31 | #include <rtems/score/isr.h> |
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32 | #include <rtems/score/wkspace.h> |
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33 | #include <rtems/posix/pthreadimpl.h> |
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34 | |
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35 | void _POSIX_Threads_cancel_run( |
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36 | Thread_Control *the_thread |
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37 | ) |
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38 | { |
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39 | POSIX_Cancel_Handler_control *handler; |
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40 | Chain_Control *handler_stack; |
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41 | POSIX_API_Control *thread_support; |
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42 | ISR_Level level; |
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43 | |
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44 | thread_support = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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45 | |
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46 | handler_stack = &thread_support->Cancellation_Handlers; |
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47 | |
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48 | thread_support->cancelability_state = PTHREAD_CANCEL_DISABLE; |
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49 | |
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50 | while ( !_Chain_Is_empty( handler_stack ) ) { |
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51 | _ISR_Disable( level ); |
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52 | handler = (POSIX_Cancel_Handler_control *) |
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53 | _Chain_Tail( handler_stack )->previous; |
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54 | _Chain_Extract_unprotected( &handler->Node ); |
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55 | _ISR_Enable( level ); |
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56 | |
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57 | (*handler->routine)( handler->arg ); |
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58 | |
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59 | _Workspace_Free( handler ); |
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60 | } |
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61 | } |
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62 | |
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63 | #else /* HAVE_STRUCT__PTHREAD_CLEANUP_CONTEXT */ |
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64 | |
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65 | void _POSIX_Threads_cancel_run( |
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66 | Thread_Control *the_thread |
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67 | ) |
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68 | { |
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69 | struct _pthread_cleanup_context *context; |
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70 | POSIX_API_Control *thread_support; |
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71 | |
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72 | _Thread_Disable_dispatch(); |
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73 | |
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74 | thread_support = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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75 | thread_support->cancelability_state = PTHREAD_CANCEL_DISABLE; |
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76 | |
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77 | context = thread_support->last_cleanup_context; |
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78 | thread_support->last_cleanup_context = NULL; |
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79 | |
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80 | _Thread_Enable_dispatch(); |
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81 | |
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82 | while ( context != NULL ) { |
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83 | ( *context->_routine )( context->_arg ); |
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84 | |
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85 | context = context->_previous; |
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86 | } |
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87 | } |
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88 | |
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89 | #endif /* HAVE_STRUCT__PTHREAD_CLEANUP_CONTEXT */ |
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