4.104.114.95
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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 | * 18.2.3.1 Establishing Cancellation Handlers, P1003.1c/Draft 10, p. 184 |
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24 | */ |
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25 | |
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26 | void pthread_cleanup_pop( |
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27 | int execute |
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28 | ) |
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29 | { |
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30 | POSIX_Cancel_Handler_control *handler; |
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31 | POSIX_Cancel_Handler_control tmp_handler; |
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32 | Chain_Control *handler_stack; |
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33 | POSIX_API_Control *thread_support; |
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34 | ISR_Level level; |
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35 | |
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36 | thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ]; |
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37 | |
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38 | handler_stack = &thread_support->Cancellation_Handlers; |
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39 | |
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40 | _ISR_Disable( level ); |
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41 | if ( _Chain_Is_empty( handler_stack ) ) { |
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42 | _ISR_Enable( level ); |
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43 | return; |
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44 | } |
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45 | |
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46 | handler = (POSIX_Cancel_Handler_control *) |
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47 | _Chain_Tail( handler_stack )->previous; |
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48 | _Chain_Extract_unprotected( &handler->Node ); |
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49 | |
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50 | _ISR_Enable( level ); |
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51 | |
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52 | tmp_handler = *handler; |
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53 | |
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54 | _Thread_Disable_dispatch(); |
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55 | _Workspace_Free( handler ); |
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56 | _Thread_Enable_dispatch(); |
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57 | |
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58 | if ( execute ) |
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59 | (*tmp_handler.routine)( tmp_handler.arg ); |
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60 | } |
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