1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Sends a signal Asynchronously directed to a thread |
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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 | * 3.3.10 Send a Signal to a Thread, P1003.1c/D10, p. 43 |
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10 | * |
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11 | * COPYRIGHT (c) 1989-2007. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.com/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #if HAVE_CONFIG_H |
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20 | #include "config.h" |
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21 | #endif |
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22 | |
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23 | #include <pthread.h> |
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24 | #include <signal.h> |
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25 | #include <errno.h> |
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26 | |
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27 | #include <rtems/system.h> |
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28 | #include <rtems/posix/pthread.h> |
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29 | #include <rtems/posix/psignalimpl.h> |
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30 | #include <rtems/score/isr.h> |
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31 | #include <rtems/seterr.h> |
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32 | |
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33 | int pthread_kill( |
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34 | pthread_t thread, |
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35 | int sig |
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36 | ) |
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37 | { |
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38 | POSIX_API_Control *api; |
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39 | Thread_Control *the_thread; |
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40 | Objects_Locations location; |
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41 | |
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42 | if ( !sig ) |
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43 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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44 | |
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45 | if ( !is_valid_signo(sig) ) |
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46 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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47 | |
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48 | the_thread = _Thread_Get( thread, &location ); |
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49 | switch ( location ) { |
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50 | |
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51 | case OBJECTS_LOCAL: |
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52 | /* |
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53 | * If sig == 0 then just validate arguments |
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54 | */ |
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55 | |
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56 | _POSIX_signals_Add_post_switch_extension(); |
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57 | |
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58 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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59 | |
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60 | if ( sig ) { |
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61 | |
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62 | if ( _POSIX_signals_Vectors[ sig ].sa_handler == SIG_IGN ) { |
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63 | _Objects_Put( &the_thread->Object ); |
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64 | return 0; |
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65 | } |
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66 | |
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67 | /* XXX critical section */ |
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68 | |
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69 | api->signals_pending |= signo_to_mask( sig ); |
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70 | |
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71 | (void) _POSIX_signals_Unblock_thread( the_thread, sig, NULL ); |
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72 | |
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73 | if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) ) |
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74 | _Thread_Dispatch_necessary = true; |
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75 | } |
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76 | _Objects_Put( &the_thread->Object ); |
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77 | return 0; |
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78 | |
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79 | #if defined(RTEMS_MULTIPROCESSING) |
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80 | case OBJECTS_REMOTE: |
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81 | #endif |
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82 | case OBJECTS_ERROR: |
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83 | break; |
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84 | } |
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85 | |
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86 | rtems_set_errno_and_return_minus_one( ESRCH ); |
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87 | } |
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