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.org/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/posix/threadsup.h> |
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28 | #include <rtems/posix/psignalimpl.h> |
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29 | #include <rtems/score/threadimpl.h> |
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30 | |
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31 | int pthread_kill( pthread_t thread, int sig ) |
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32 | { |
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33 | Thread_Control *the_thread; |
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34 | ISR_lock_Context lock_context; |
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35 | POSIX_API_Control *api; |
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36 | Per_CPU_Control *cpu_self; |
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37 | |
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38 | if ( !is_valid_signo( sig ) ) { |
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39 | return EINVAL; |
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40 | } |
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41 | |
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42 | the_thread = _Thread_Get( thread, &lock_context ); |
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43 | |
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44 | if ( the_thread == NULL ) { |
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45 | return ESRCH; |
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46 | } |
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47 | |
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48 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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49 | |
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50 | if ( _POSIX_signals_Vectors[ sig ].sa_handler == SIG_IGN ) { |
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51 | _ISR_lock_ISR_enable( &lock_context ); |
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52 | return 0; |
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53 | } |
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54 | |
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55 | /* XXX critical section */ |
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56 | |
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57 | api->signals_pending |= signo_to_mask( sig ); |
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58 | |
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59 | cpu_self = _Thread_Dispatch_disable_critical( &lock_context ); |
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60 | _ISR_lock_ISR_enable( &lock_context ); |
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61 | |
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62 | (void) _POSIX_signals_Unblock_thread( the_thread, sig, NULL ); |
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63 | _Thread_Dispatch_enable( cpu_self ); |
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64 | return 0; |
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65 | } |
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