1 | /* |
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2 | * 3.3.10 Send a Signal to a Thread, P1003.1c/D10, p. 43 |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1999. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | |
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15 | #include <pthread.h> |
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16 | #include <errno.h> |
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17 | |
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18 | #include <rtems/system.h> |
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19 | #include <rtems/posix/pthread.h> |
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20 | #include <rtems/posix/psignal.h> |
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21 | #include <rtems/score/isr.h> |
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22 | #include <rtems/seterr.h> |
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23 | |
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24 | int pthread_kill( |
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25 | pthread_t thread, |
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26 | int sig |
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27 | ) |
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28 | { |
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29 | POSIX_API_Control *api; |
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30 | Thread_Control *the_thread; |
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31 | Objects_Locations location; |
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32 | |
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33 | if ( sig && !is_valid_signo(sig) ) |
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34 | set_errno_and_return_minus_one( EINVAL ); |
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35 | |
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36 | /* commented out when posix timers added |
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37 | if ( _POSIX_signals_Vectors[ sig ].sa_flags == SA_SIGINFO ) |
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38 | set_errno_and_return_minus_one( ENOSYS ); |
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39 | */ |
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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 | case OBJECTS_REMOTE: |
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45 | set_errno_and_return_minus_one( ESRCH ); |
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46 | case OBJECTS_LOCAL: |
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47 | /* |
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48 | * If sig == 0 then just validate arguments |
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49 | */ |
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50 | |
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51 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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52 | |
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53 | if ( sig ) { |
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54 | |
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55 | if ( _POSIX_signals_Vectors[ sig ].sa_handler == SIG_IGN ) { |
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56 | _Thread_Enable_dispatch(); |
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57 | return 0; |
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58 | } |
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59 | |
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60 | /* XXX critical section */ |
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61 | |
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62 | api->signals_pending |= signo_to_mask( sig ); |
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63 | |
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64 | (void) _POSIX_signals_Unblock_thread( the_thread, sig, NULL ); |
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65 | |
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66 | the_thread->do_post_task_switch_extension = TRUE; |
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67 | |
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68 | if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) ) |
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69 | _ISR_Signals_to_thread_executing = TRUE; |
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70 | } |
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71 | _Thread_Enable_dispatch(); |
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72 | return 0; |
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73 | } |
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74 | |
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75 | return POSIX_BOTTOM_REACHED(); |
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76 | } |
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