4.104.114.84.95
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1 | /* |
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2 | * $Id$ |
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3 | */ |
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4 | |
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5 | #if HAVE_CONFIG_H |
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6 | #include "config.h" |
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7 | #endif |
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8 | |
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9 | #include <pthread.h> |
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10 | #include <errno.h> |
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11 | |
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12 | #include <rtems/system.h> |
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13 | #include <rtems/score/chain.h> |
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14 | #include <rtems/score/isr.h> |
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15 | #include <rtems/score/thread.h> |
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16 | #include <rtems/score/wkspace.h> |
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17 | #include <rtems/posix/cancel.h> |
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18 | #include <rtems/posix/pthread.h> |
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19 | #include <rtems/posix/threadsup.h> |
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20 | |
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21 | /*PAGE |
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22 | * |
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23 | * 18.2.1 Canceling Execution of a Thread, P1003.1c/Draft 10, p. 181 |
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24 | */ |
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25 | |
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26 | int pthread_cancel( |
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27 | pthread_t thread |
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28 | ) |
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29 | { |
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30 | Thread_Control *the_thread; |
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31 | POSIX_API_Control *thread_support; |
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32 | Objects_Locations location; |
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33 | |
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34 | /* |
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35 | * Don't even think about deleting a resource from an ISR. |
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36 | */ |
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37 | |
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38 | if ( _ISR_Is_in_progress() ) |
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39 | return EPROTO; |
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40 | |
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41 | the_thread = _POSIX_Threads_Get( thread, &location ); |
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42 | switch ( location ) { |
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43 | case OBJECTS_ERROR: |
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44 | return EINVAL; |
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45 | case OBJECTS_REMOTE: |
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46 | return POSIX_MP_NOT_IMPLEMENTED(); |
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47 | case OBJECTS_LOCAL: |
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48 | thread_support = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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49 | |
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50 | thread_support->cancelation_requested = 1; |
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51 | |
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52 | if ( thread_support->cancelability_state == PTHREAD_CANCEL_ENABLE && |
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53 | thread_support->cancelability_type == PTHREAD_CANCEL_ASYNCHRONOUS ) { |
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54 | _POSIX_Threads_cancel_run( the_thread ); |
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55 | } |
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56 | |
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57 | _Thread_Enable_dispatch(); |
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58 | return 0; |
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59 | } |
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60 | |
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61 | return POSIX_BOTTOM_REACHED(); |
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62 | } |
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