1 | /* |
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2 | * $Id$ |
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3 | */ |
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4 | |
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5 | #include <pthread.h> |
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6 | #include <errno.h> |
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7 | |
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8 | #include <rtems/system.h> |
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9 | #include <rtems/score/object.h> |
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10 | #include <rtems/score/states.h> |
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11 | #include <rtems/score/watchdog.h> |
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12 | #include <rtems/posix/cond.h> |
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13 | #include <rtems/posix/time.h> |
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14 | #include <rtems/posix/mutex.h> |
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15 | |
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16 | /*PAGE |
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17 | * |
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18 | * 11.4.2 Initializing and Destroying a Condition Variable, |
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19 | * P1003.1c/Draft 10, p. 87 |
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20 | */ |
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21 | |
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22 | int pthread_cond_init( |
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23 | pthread_cond_t *cond, |
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24 | const pthread_condattr_t *attr |
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25 | ) |
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26 | { |
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27 | POSIX_Condition_variables_Control *the_cond; |
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28 | const pthread_condattr_t *the_attr; |
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29 | |
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30 | if ( attr ) the_attr = attr; |
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31 | else the_attr = &_POSIX_Condition_variables_Default_attributes; |
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32 | |
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33 | /* |
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34 | * XXX: Be careful about attributes when global!!! |
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35 | */ |
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36 | |
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37 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED ) |
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38 | return POSIX_MP_NOT_IMPLEMENTED(); |
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39 | |
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40 | if ( !the_attr->is_initialized ) |
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41 | return EINVAL; |
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42 | |
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43 | _Thread_Disable_dispatch(); |
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44 | |
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45 | the_cond = _POSIX_Condition_variables_Allocate(); |
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46 | |
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47 | if ( !the_cond ) { |
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48 | _Thread_Enable_dispatch(); |
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49 | return ENOMEM; |
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50 | } |
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51 | |
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52 | #if defined(RTEMS_MULTIPROCESSING) |
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53 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED && |
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54 | !( _Objects_MP_Allocate_and_open( &_POSIX_Condition_variables_Information, |
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55 | 0, the_cond->Object.id, FALSE ) ) ) { |
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56 | _POSIX_Condition_variables_Free( the_cond ); |
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57 | _Thread_Enable_dispatch(); |
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58 | return EAGAIN; |
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59 | } |
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60 | #endif |
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61 | |
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62 | the_cond->process_shared = the_attr->process_shared; |
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63 | |
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64 | the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX; |
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65 | |
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66 | /* XXX some more initialization might need to go here */ |
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67 | _Thread_queue_Initialize( |
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68 | &the_cond->Wait_queue, |
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69 | OBJECTS_POSIX_CONDITION_VARIABLES, |
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70 | THREAD_QUEUE_DISCIPLINE_FIFO, |
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71 | STATES_WAITING_FOR_CONDITION_VARIABLE, |
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72 | #if defined(RTEMS_MULTIPROCESSING) |
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73 | _POSIX_Condition_variables_MP_Send_extract_proxy, |
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74 | #else |
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75 | NULL, |
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76 | #endif |
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77 | ETIMEDOUT |
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78 | ); |
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79 | |
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80 | _Objects_Open( |
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81 | &_POSIX_Condition_variables_Information, |
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82 | &the_cond->Object, |
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83 | 0 |
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84 | ); |
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85 | |
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86 | *cond = the_cond->Object.id; |
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87 | |
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88 | #if defined(RTEMS_MULTIPROCESSING) |
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89 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED ) |
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90 | _POSIX_Condition_variables_MP_Send_process_packet( |
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91 | POSIX_CONDITION_VARIABLES_MP_ANNOUNCE_CREATE, |
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92 | the_cond->Object.id, |
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93 | 0, /* Name not used */ |
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94 | 0 /* Not used */ |
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95 | ); |
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96 | #endif |
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97 | |
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98 | _Thread_Enable_dispatch(); |
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99 | |
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100 | return 0; |
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101 | } |
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