[8165b48f] | 1 | /* |
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[eb5a7e07] | 2 | * $Id$ |
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[5e9b32b] | 3 | */ |
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| 4 | |
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[613cff6] | 5 | #include <assert.h> |
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[5e9b32b] | 6 | #include <errno.h> |
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| 7 | #include <pthread.h> |
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| 8 | #include <limits.h> |
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| 9 | |
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[f4719d5a] | 10 | #include <rtems/system.h> |
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[5a18e04] | 11 | #include <rtems/score/apiext.h> |
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[5e9b32b] | 12 | #include <rtems/score/stack.h> |
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| 13 | #include <rtems/score/thread.h> |
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[5a18e04] | 14 | #include <rtems/score/userext.h> |
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| 15 | #include <rtems/score/wkspace.h> |
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[5e9b32b] | 16 | #include <rtems/posix/pthread.h> |
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[ece8c9a] | 17 | #include <rtems/posix/priority.h> |
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[5a18e04] | 18 | #include <rtems/posix/config.h> |
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[624133c] | 19 | #include <rtems/posix/time.h> |
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[5e9b32b] | 20 | |
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| 21 | /*PAGE |
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| 22 | * |
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| 23 | * The default pthreads attributes structure. |
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| 24 | */ |
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| 25 | |
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| 26 | const pthread_attr_t _POSIX_Threads_Default_attributes = { |
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| 27 | TRUE, /* is_initialized */ |
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[9b4e549] | 28 | NULL, /* stackaddr */ |
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[5e9b32b] | 29 | STACK_MINIMUM_SIZE, /* stacksize */ |
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| 30 | PTHREAD_SCOPE_PROCESS, /* contentionscope */ |
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| 31 | PTHREAD_INHERIT_SCHED, /* inheritsched */ |
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| 32 | SCHED_FIFO, /* schedpolicy */ |
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| 33 | { /* schedparam */ |
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| 34 | 128, /* sched_priority */ |
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| 35 | 0, /* ss_low_priority */ |
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| 36 | { 0L, 0 }, /* ss_replenish_period */ |
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| 37 | { 0L, 0 } /* ss_initial_budget */ |
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| 38 | }, |
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[9b4e549] | 39 | PTHREAD_CREATE_JOINABLE, /* detachstate */ |
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[5e9b32b] | 40 | 1 /* cputime_clock_allowed */ |
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| 41 | }; |
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| 42 | |
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[65a5c1b] | 43 | /*PAGE |
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| 44 | * |
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| 45 | * _POSIX_Threads_Sporadic_budget_TSR |
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| 46 | */ |
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| 47 | |
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| 48 | void _POSIX_Threads_Sporadic_budget_TSR( |
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| 49 | Objects_Id id, |
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| 50 | void *argument |
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| 51 | ) |
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| 52 | { |
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| 53 | Thread_Control *the_thread; |
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| 54 | POSIX_API_Control *api; |
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| 55 | |
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| 56 | the_thread = argument; |
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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 | the_thread->cpu_time_budget = |
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| 61 | _POSIX_Timespec_to_interval( &api->schedparam.ss_initial_budget ); |
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| 62 | |
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| 63 | _Thread_Change_priority( |
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| 64 | the_thread, |
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| 65 | _POSIX_Priority_To_core( api->schedparam.sched_priority ) |
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| 66 | ); |
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| 67 | |
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| 68 | _Watchdog_Insert_ticks( |
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| 69 | &api->Sporadic_timer, |
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| 70 | _POSIX_Timespec_to_interval( &api->schedparam.ss_replenish_period ) |
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| 71 | ); |
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| 72 | } |
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| 73 | |
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| 74 | /*PAGE |
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| 75 | * |
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| 76 | * _POSIX_Threads_Sporadic_budget_callout |
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| 77 | */ |
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| 78 | |
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| 79 | void _POSIX_Threads_Sporadic_budget_callout( |
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| 80 | Thread_Control *the_thread |
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| 81 | ) |
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| 82 | { |
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| 83 | POSIX_API_Control *api; |
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| 84 | |
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| 85 | /* XXX really should be based on MAX_U32 */ |
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| 86 | |
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| 87 | api = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ]; |
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| 88 | |
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| 89 | the_thread->cpu_time_budget = 0xFFFFFFFF; |
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| 90 | |
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| 91 | _Thread_Change_priority( |
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| 92 | the_thread, |
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| 93 | _POSIX_Priority_To_core( api->schedparam.ss_low_priority ) |
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| 94 | ); |
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| 95 | } |
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| 96 | |
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[5a18e04] | 97 | /*PAGE |
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| 98 | * |
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| 99 | * _POSIX_Threads_Create_extension |
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| 100 | * |
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| 101 | * XXX |
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| 102 | */ |
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| 103 | |
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| 104 | boolean _POSIX_Threads_Create_extension( |
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| 105 | Thread_Control *executing, |
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| 106 | Thread_Control *created |
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| 107 | ) |
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| 108 | { |
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| 109 | POSIX_API_Control *api; |
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| 110 | |
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| 111 | api = _Workspace_Allocate( sizeof( POSIX_API_Control ) ); |
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| 112 | |
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| 113 | if ( !api ) |
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| 114 | return FALSE; |
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| 115 | |
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| 116 | created->API_Extensions[ THREAD_API_POSIX ] = api; |
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| 117 | |
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| 118 | /* XXX something should go here */ |
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| 119 | |
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| 120 | return TRUE; |
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| 121 | } |
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| 122 | |
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| 123 | /*PAGE |
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| 124 | * |
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| 125 | * _POSIX_Threads_Delete_extension |
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| 126 | * |
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| 127 | * XXX |
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| 128 | */ |
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| 129 | |
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| 130 | User_extensions_routine _POSIX_Threads_Delete_extension( |
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| 131 | Thread_Control *executing, |
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| 132 | Thread_Control *deleted |
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| 133 | ) |
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| 134 | { |
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| 135 | (void) _Workspace_Free( deleted->API_Extensions[ THREAD_API_POSIX ] ); |
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| 136 | |
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| 137 | deleted->API_Extensions[ THREAD_API_POSIX ] = NULL; |
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[c238a218] | 138 | |
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| 139 | /* XXX run _POSIX_Keys_Run_destructors here? */ |
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[5a18e04] | 140 | } |
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| 141 | |
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| 142 | /*PAGE |
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| 143 | * |
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[dd32d883] | 144 | * _POSIX_Threads_Initialize_user_threads |
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[5a18e04] | 145 | * |
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| 146 | * This routine creates and starts all configured user |
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| 147 | * initialzation threads. |
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| 148 | * |
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| 149 | * Input parameters: NONE |
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| 150 | * |
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| 151 | * Output parameters: NONE |
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| 152 | */ |
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| 153 | |
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[dd32d883] | 154 | void _POSIX_Threads_Initialize_user_threads( void ) |
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[5a18e04] | 155 | { |
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[dd32d883] | 156 | int status; |
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| 157 | unsigned32 index; |
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| 158 | unsigned32 maximum; |
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| 159 | posix_initialization_threads_table *user_threads; |
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| 160 | pthread_t thread_id; |
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| 161 | |
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| 162 | user_threads = _POSIX_Threads_User_initialization_threads; |
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| 163 | maximum = _POSIX_Threads_Number_of_initialization_threads; |
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[613cff6] | 164 | |
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[dd32d883] | 165 | if ( !user_threads || maximum == 0 ) |
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[613cff6] | 166 | return; |
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[5a18e04] | 167 | |
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| 168 | for ( index=0 ; index < maximum ; index++ ) { |
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[dd32d883] | 169 | status = pthread_create( |
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| 170 | &thread_id, |
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| 171 | NULL, |
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| 172 | user_threads[ index ].entry, |
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| 173 | NULL |
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| 174 | ); |
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[613cff6] | 175 | assert( !status ); |
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[5a18e04] | 176 | } |
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| 177 | } |
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| 178 | |
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| 179 | API_extensions_Control _POSIX_Threads_API_extensions = { |
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| 180 | { NULL, NULL }, |
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| 181 | NULL, /* predriver */ |
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[dd32d883] | 182 | _POSIX_Threads_Initialize_user_threads, /* postdriver */ |
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[5a18e04] | 183 | NULL, /* post switch */ |
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| 184 | }; |
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| 185 | |
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| 186 | User_extensions_Control _POSIX_Threads_User_extensions = { |
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| 187 | { NULL, NULL }, |
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| 188 | { _POSIX_Threads_Create_extension, /* create */ |
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| 189 | NULL, /* start */ |
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| 190 | NULL, /* restart */ |
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| 191 | _POSIX_Threads_Delete_extension, /* delete */ |
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| 192 | NULL, /* switch */ |
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| 193 | NULL, /* begin */ |
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| 194 | NULL, /* exitted */ |
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| 195 | NULL /* fatal */ |
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| 196 | } |
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| 197 | }; |
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| 198 | |
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[5e9b32b] | 199 | /*PAGE |
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| 200 | * |
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| 201 | * _POSIX_Threads_Manager_initialization |
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| 202 | * |
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| 203 | * This routine initializes all threads manager related data structures. |
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| 204 | * |
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| 205 | * Input parameters: |
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| 206 | * maximum_pthreads - maximum configured pthreads |
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| 207 | * |
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| 208 | * Output parameters: NONE |
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| 209 | */ |
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| 210 | |
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| 211 | void _POSIX_Threads_Manager_initialization( |
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[dd32d883] | 212 | unsigned32 maximum_pthreads, |
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| 213 | unsigned32 number_of_initialization_threads, |
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| 214 | posix_initialization_threads_table *user_threads |
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[5a18e04] | 215 | |
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[5e9b32b] | 216 | ) |
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| 217 | { |
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[dd32d883] | 218 | _POSIX_Threads_Number_of_initialization_threads = |
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| 219 | number_of_initialization_threads; |
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| 220 | _POSIX_Threads_User_initialization_threads = user_threads; |
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[5a18e04] | 221 | |
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[974ff40] | 222 | /* |
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| 223 | * There may not be any POSIX initialization threads configured. |
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| 224 | */ |
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| 225 | |
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| 226 | #if 0 |
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[dd32d883] | 227 | if ( user_threads == NULL || number_of_initialization_threads == 0 ) |
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[5a18e04] | 228 | _Internal_error_Occurred( INTERNAL_ERROR_POSIX_API, TRUE, EINVAL ); |
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[974ff40] | 229 | #endif |
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[5a18e04] | 230 | |
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[5e9b32b] | 231 | _Objects_Initialize_information( |
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| 232 | &_POSIX_Threads_Information, |
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| 233 | OBJECTS_POSIX_THREADS, |
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[ece8c9a] | 234 | FALSE, /* does not support global */ |
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[5e9b32b] | 235 | maximum_pthreads, |
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[e811d68] | 236 | sizeof( Thread_Control ), |
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[5e9b32b] | 237 | TRUE, |
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[ece8c9a] | 238 | 5, /* length is arbitrary for now */ |
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| 239 | TRUE /* this class is threads */ |
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[5e9b32b] | 240 | ); |
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[5a18e04] | 241 | |
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[613cff6] | 242 | /* |
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| 243 | * Add all the extensions for this API |
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| 244 | */ |
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| 245 | |
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| 246 | _User_extensions_Add_API_set( &_POSIX_Threads_User_extensions ); |
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| 247 | |
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| 248 | _API_extensions_Add( &_POSIX_Threads_API_extensions ); |
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| 249 | |
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| 250 | /* |
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| 251 | * If we supported MP, then here we would ... |
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| 252 | * Register the MP Process Packet routine. |
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| 253 | */ |
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| 254 | |
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[5e9b32b] | 255 | } |
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| 256 | |
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| 257 | /*PAGE |
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| 258 | * |
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| 259 | * 3.1.3 Register Fork Handlers, P1003.1c/Draft 10, P1003.1c/Draft 10, p. 27 |
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[568ebf3] | 260 | * |
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| 261 | * RTEMS does not support processes, so we fall under this and do not |
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| 262 | * provide this routine: |
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| 263 | * |
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| 264 | * "Either the implementation shall support the pthread_atfork() function |
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| 265 | * as described above or the pthread_atfork() funciton shall not be |
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| 266 | * provided." |
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[5e9b32b] | 267 | */ |
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| 268 | |
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| 269 | /*PAGE |
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| 270 | * |
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| 271 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 272 | */ |
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| 273 | |
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| 274 | int pthread_attr_setscope( |
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| 275 | pthread_attr_t *attr, |
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| 276 | int contentionscope |
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| 277 | ) |
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| 278 | { |
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| 279 | if ( !attr || !attr->is_initialized ) |
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| 280 | return EINVAL; |
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| 281 | |
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[e72d995a] | 282 | switch ( contentionscope ) { |
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| 283 | case PTHREAD_SCOPE_PROCESS: |
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[c238a218] | 284 | attr->contentionscope = contentionscope; |
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| 285 | return 0; |
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| 286 | |
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[2c207d1f] | 287 | case PTHREAD_SCOPE_SYSTEM: |
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| 288 | return ENOSYS; |
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| 289 | |
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[e72d995a] | 290 | default: |
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| 291 | return EINVAL; |
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| 292 | } |
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[5e9b32b] | 293 | } |
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| 294 | |
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| 295 | /*PAGE |
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| 296 | * |
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| 297 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 298 | */ |
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| 299 | |
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| 300 | int pthread_attr_getscope( |
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| 301 | const pthread_attr_t *attr, |
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| 302 | int *contentionscope |
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| 303 | ) |
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| 304 | { |
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| 305 | if ( !attr || !attr->is_initialized ) |
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| 306 | return EINVAL; |
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| 307 | |
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| 308 | *contentionscope = attr->contentionscope; |
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| 309 | return 0; |
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| 310 | } |
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| 311 | |
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| 312 | /*PAGE |
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| 313 | * |
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| 314 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 315 | */ |
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| 316 | |
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| 317 | int pthread_attr_setinheritsched( |
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| 318 | pthread_attr_t *attr, |
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| 319 | int inheritsched |
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| 320 | ) |
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| 321 | { |
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| 322 | if ( !attr || !attr->is_initialized ) |
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| 323 | return EINVAL; |
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| 324 | |
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[e72d995a] | 325 | switch ( inheritsched ) { |
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| 326 | case PTHREAD_INHERIT_SCHED: |
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| 327 | case PTHREAD_EXPLICIT_SCHED: |
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[c238a218] | 328 | attr->inheritsched = inheritsched; |
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| 329 | return 0; |
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| 330 | |
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[e72d995a] | 331 | default: |
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| 332 | return EINVAL; |
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| 333 | } |
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[5e9b32b] | 334 | } |
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| 335 | |
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| 336 | /*PAGE |
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| 337 | * |
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| 338 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 339 | */ |
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| 340 | |
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| 341 | int pthread_attr_getinheritsched( |
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| 342 | const pthread_attr_t *attr, |
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| 343 | int *inheritsched |
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| 344 | ) |
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| 345 | { |
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| 346 | if ( !attr || !attr->is_initialized ) |
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| 347 | return EINVAL; |
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| 348 | |
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| 349 | *inheritsched = attr->inheritsched; |
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| 350 | return 0; |
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| 351 | } |
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| 352 | |
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| 353 | /*PAGE |
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| 354 | * |
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| 355 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 356 | */ |
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| 357 | |
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| 358 | int pthread_attr_setschedpolicy( |
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| 359 | pthread_attr_t *attr, |
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| 360 | int policy |
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| 361 | ) |
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| 362 | { |
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| 363 | if ( !attr || !attr->is_initialized ) |
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| 364 | return EINVAL; |
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| 365 | |
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[c238a218] | 366 | switch ( policy ) { |
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| 367 | case SCHED_OTHER: |
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| 368 | case SCHED_FIFO: |
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| 369 | case SCHED_RR: |
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| 370 | case SCHED_SPORADIC: |
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| 371 | attr->schedpolicy = policy; |
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| 372 | return 0; |
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| 373 | |
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| 374 | default: |
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| 375 | return EINVAL; |
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| 376 | } |
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[5e9b32b] | 377 | } |
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| 378 | |
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| 379 | /*PAGE |
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| 380 | * |
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| 381 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 382 | */ |
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| 383 | |
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| 384 | int pthread_attr_getschedpolicy( |
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| 385 | const pthread_attr_t *attr, |
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| 386 | int *policy |
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| 387 | ) |
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| 388 | { |
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| 389 | if ( !attr || !attr->is_initialized ) |
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| 390 | return EINVAL; |
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| 391 | |
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| 392 | *policy = attr->schedpolicy; |
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| 393 | return 0; |
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| 394 | } |
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| 395 | |
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| 396 | /*PAGE |
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| 397 | * |
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| 398 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 399 | */ |
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| 400 | |
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| 401 | int pthread_attr_setschedparam( |
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| 402 | pthread_attr_t *attr, |
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[f4719d5a] | 403 | const struct sched_param *param |
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[5e9b32b] | 404 | ) |
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| 405 | { |
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| 406 | if ( !attr || !attr->is_initialized ) |
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| 407 | return EINVAL; |
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| 408 | |
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[f4719d5a] | 409 | attr->schedparam = *param; |
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[5e9b32b] | 410 | return 0; |
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| 411 | } |
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| 412 | |
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| 413 | /*PAGE |
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| 414 | * |
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| 415 | * 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120 |
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| 416 | */ |
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| 417 | |
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| 418 | int pthread_attr_getschedparam( |
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| 419 | const pthread_attr_t *attr, |
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| 420 | struct sched_param *param |
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| 421 | ) |
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| 422 | { |
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| 423 | if ( !attr || !attr->is_initialized ) |
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| 424 | return EINVAL; |
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| 425 | |
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| 426 | *param = attr->schedparam; |
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| 427 | return 0; |
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| 428 | } |
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| 429 | |
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| 430 | /*PAGE |
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| 431 | * |
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| 432 | * 13.5.2 Dynamic Thread Scheduling Parameters Access, |
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| 433 | * P1003.1c/Draft 10, p. 124 |
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| 434 | */ |
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| 435 | |
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| 436 | int pthread_getschedparam( |
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| 437 | pthread_t thread, |
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| 438 | int *policy, |
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| 439 | struct sched_param *param |
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| 440 | ) |
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| 441 | { |
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[56bd4a36] | 442 | Objects_Locations location; |
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| 443 | POSIX_API_Control *api; |
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| 444 | register Thread_Control *the_thread; |
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[5e9b32b] | 445 | |
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| 446 | if ( !policy || !param ) |
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| 447 | return EINVAL; |
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| 448 | |
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[56bd4a36] | 449 | the_thread = _POSIX_Threads_Get( thread, &location ); |
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| 450 | switch ( location ) { |
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| 451 | case OBJECTS_ERROR: |
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| 452 | case OBJECTS_REMOTE: |
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| 453 | return ESRCH; |
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| 454 | case OBJECTS_LOCAL: |
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| 455 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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| 456 | *policy = api->schedpolicy; |
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[9b4e549] | 457 | *param = api->schedparam; |
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[56bd4a36] | 458 | _Thread_Enable_dispatch(); |
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| 459 | return 0; |
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| 460 | } |
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| 461 | |
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| 462 | return POSIX_BOTTOM_REACHED(); |
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| 463 | |
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[5e9b32b] | 464 | } |
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| 465 | |
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| 466 | /*PAGE |
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| 467 | * |
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| 468 | * 13.5.2 Dynamic Thread Scheduling Parameters Access, |
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| 469 | * P1003.1c/Draft 10, p. 124 |
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| 470 | */ |
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| 471 | |
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| 472 | int pthread_setschedparam( |
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| 473 | pthread_t thread, |
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| 474 | int policy, |
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| 475 | struct sched_param *param |
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| 476 | ) |
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| 477 | { |
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[65a5c1b] | 478 | register Thread_Control *the_thread; |
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| 479 | POSIX_API_Control *api; |
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| 480 | Thread_CPU_budget_algorithms budget_algorithm; |
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| 481 | Thread_CPU_budget_algorithm_callout budget_callout; |
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| 482 | Objects_Locations location; |
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[230a0dcb] | 483 | |
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[65a5c1b] | 484 | /* |
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| 485 | * Check all the parameters |
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| 486 | */ |
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| 487 | |
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[5e9b32b] | 488 | if ( !param ) |
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| 489 | return EINVAL; |
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| 490 | |
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[65a5c1b] | 491 | if ( !_POSIX_Priority_Is_valid( param->sched_priority ) ) |
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| 492 | return EINVAL; |
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| 493 | |
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| 494 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
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| 495 | budget_callout = NULL; |
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| 496 | |
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| 497 | switch ( policy ) { |
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| 498 | case SCHED_OTHER: |
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| 499 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE; |
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| 500 | break; |
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| 501 | |
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| 502 | case SCHED_FIFO: |
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| 503 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
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| 504 | break; |
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| 505 | |
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| 506 | case SCHED_RR: |
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| 507 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE; |
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| 508 | break; |
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| 509 | |
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| 510 | case SCHED_SPORADIC: |
---|
| 511 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT; |
---|
| 512 | budget_callout = _POSIX_Threads_Sporadic_budget_callout; |
---|
| 513 | |
---|
| 514 | if ( _POSIX_Timespec_to_interval( ¶m->ss_replenish_period ) < |
---|
| 515 | _POSIX_Timespec_to_interval( ¶m->ss_initial_budget ) ) |
---|
| 516 | return EINVAL; |
---|
| 517 | |
---|
| 518 | if ( !_POSIX_Priority_Is_valid( param->ss_low_priority ) ) |
---|
| 519 | return EINVAL; |
---|
| 520 | |
---|
| 521 | break; |
---|
| 522 | |
---|
| 523 | default: |
---|
| 524 | return EINVAL; |
---|
| 525 | } |
---|
| 526 | |
---|
| 527 | /* |
---|
| 528 | * Actually change the scheduling policy and parameters |
---|
| 529 | */ |
---|
[230a0dcb] | 530 | |
---|
| 531 | the_thread = _POSIX_Threads_Get( thread, &location ); |
---|
| 532 | switch ( location ) { |
---|
| 533 | case OBJECTS_ERROR: |
---|
| 534 | case OBJECTS_REMOTE: |
---|
| 535 | return ESRCH; |
---|
| 536 | case OBJECTS_LOCAL: |
---|
[65a5c1b] | 537 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 538 | |
---|
| 539 | if ( api->schedpolicy == SCHED_SPORADIC ) |
---|
| 540 | (void) _Watchdog_Remove( &api->Sporadic_timer ); |
---|
| 541 | |
---|
| 542 | api->schedpolicy = policy; |
---|
| 543 | api->schedparam = *param; |
---|
| 544 | the_thread->budget_algorithm = budget_algorithm; |
---|
| 545 | the_thread->budget_callout = budget_callout; |
---|
| 546 | |
---|
| 547 | switch ( api->schedpolicy ) { |
---|
[230a0dcb] | 548 | case SCHED_OTHER: |
---|
| 549 | case SCHED_FIFO: |
---|
| 550 | case SCHED_RR: |
---|
[65a5c1b] | 551 | the_thread->cpu_time_budget = _Thread_Ticks_per_timeslice; |
---|
| 552 | |
---|
| 553 | _Thread_Change_priority( |
---|
| 554 | the_thread, |
---|
| 555 | _POSIX_Priority_To_core( api->schedparam.sched_priority ) |
---|
| 556 | ); |
---|
[230a0dcb] | 557 | break; |
---|
| 558 | |
---|
[65a5c1b] | 559 | case SCHED_SPORADIC: |
---|
| 560 | _POSIX_Threads_Sporadic_budget_TSR( 0, the_thread ); |
---|
| 561 | break; |
---|
[230a0dcb] | 562 | } |
---|
| 563 | |
---|
[56bd4a36] | 564 | _Thread_Enable_dispatch(); |
---|
[c238a218] | 565 | return 0; |
---|
| 566 | } |
---|
[230a0dcb] | 567 | return POSIX_BOTTOM_REACHED(); |
---|
[5e9b32b] | 568 | } |
---|
| 569 | |
---|
| 570 | /*PAGE |
---|
| 571 | * |
---|
| 572 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 573 | */ |
---|
| 574 | |
---|
| 575 | int pthread_attr_init( |
---|
| 576 | pthread_attr_t *attr |
---|
| 577 | ) |
---|
| 578 | { |
---|
| 579 | if ( !attr ) |
---|
| 580 | return EINVAL; |
---|
| 581 | |
---|
| 582 | *attr = _POSIX_Threads_Default_attributes; |
---|
| 583 | return 0; |
---|
| 584 | } |
---|
| 585 | |
---|
| 586 | /*PAGE |
---|
| 587 | * |
---|
| 588 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 589 | */ |
---|
| 590 | |
---|
| 591 | int pthread_attr_destroy( |
---|
| 592 | pthread_attr_t *attr |
---|
| 593 | ) |
---|
| 594 | { |
---|
| 595 | if ( !attr || !attr->is_initialized ) |
---|
| 596 | return EINVAL; |
---|
| 597 | |
---|
| 598 | attr->is_initialized = FALSE; |
---|
| 599 | return 0; |
---|
| 600 | } |
---|
| 601 | |
---|
| 602 | /*PAGE |
---|
| 603 | * |
---|
| 604 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 605 | */ |
---|
| 606 | |
---|
| 607 | int pthread_attr_getstacksize( |
---|
| 608 | const pthread_attr_t *attr, |
---|
| 609 | size_t *stacksize |
---|
| 610 | ) |
---|
| 611 | { |
---|
| 612 | if ( !attr || !attr->is_initialized ) |
---|
| 613 | return EINVAL; |
---|
| 614 | |
---|
| 615 | *stacksize = attr->stacksize; |
---|
| 616 | return 0; |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | /*PAGE |
---|
| 620 | * |
---|
| 621 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 622 | */ |
---|
| 623 | |
---|
| 624 | int pthread_attr_setstacksize( |
---|
| 625 | pthread_attr_t *attr, |
---|
| 626 | size_t stacksize |
---|
| 627 | ) |
---|
| 628 | { |
---|
| 629 | if ( !attr || !attr->is_initialized ) |
---|
| 630 | return EINVAL; |
---|
| 631 | |
---|
[c238a218] | 632 | if (stacksize < STACK_MINIMUM_SIZE) |
---|
[9c877c0d] | 633 | attr->stacksize = STACK_MINIMUM_SIZE; |
---|
| 634 | else |
---|
| 635 | attr->stacksize = stacksize; |
---|
[5e9b32b] | 636 | return 0; |
---|
| 637 | } |
---|
| 638 | |
---|
| 639 | /*PAGE |
---|
| 640 | * |
---|
| 641 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 642 | */ |
---|
| 643 | |
---|
| 644 | int pthread_attr_getstackaddr( |
---|
| 645 | const pthread_attr_t *attr, |
---|
| 646 | void **stackaddr |
---|
| 647 | ) |
---|
| 648 | { |
---|
| 649 | if ( !attr || !attr->is_initialized ) |
---|
| 650 | return EINVAL; |
---|
| 651 | |
---|
| 652 | *stackaddr = attr->stackaddr; |
---|
| 653 | return 0; |
---|
| 654 | } |
---|
| 655 | |
---|
| 656 | /*PAGE |
---|
| 657 | * |
---|
| 658 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 659 | */ |
---|
| 660 | |
---|
| 661 | int pthread_attr_setstackaddr( |
---|
| 662 | pthread_attr_t *attr, |
---|
| 663 | void *stackaddr |
---|
| 664 | ) |
---|
| 665 | { |
---|
| 666 | if ( !attr || !attr->is_initialized ) |
---|
| 667 | return EINVAL; |
---|
| 668 | |
---|
| 669 | attr->stackaddr = stackaddr; |
---|
| 670 | return 0; |
---|
| 671 | } |
---|
| 672 | |
---|
| 673 | /*PAGE |
---|
| 674 | * |
---|
| 675 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 676 | */ |
---|
| 677 | |
---|
| 678 | int pthread_attr_getdetachstate( |
---|
| 679 | const pthread_attr_t *attr, |
---|
| 680 | int *detachstate |
---|
| 681 | ) |
---|
| 682 | { |
---|
| 683 | if ( !attr || !attr->is_initialized ) |
---|
| 684 | return EINVAL; |
---|
| 685 | |
---|
| 686 | *detachstate = attr->detachstate; |
---|
| 687 | return 0; |
---|
| 688 | } |
---|
| 689 | |
---|
| 690 | /*PAGE |
---|
| 691 | * |
---|
| 692 | * 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140 |
---|
| 693 | */ |
---|
| 694 | |
---|
| 695 | int pthread_attr_setdetachstate( |
---|
| 696 | pthread_attr_t *attr, |
---|
| 697 | int detachstate |
---|
| 698 | ) |
---|
| 699 | { |
---|
| 700 | if ( !attr || !attr->is_initialized ) |
---|
| 701 | return EINVAL; |
---|
| 702 | |
---|
[c238a218] | 703 | switch ( detachstate ) { |
---|
| 704 | case PTHREAD_CREATE_DETACHED: |
---|
| 705 | case PTHREAD_CREATE_JOINABLE: |
---|
| 706 | attr->detachstate = detachstate; |
---|
| 707 | return 0; |
---|
| 708 | |
---|
| 709 | default: |
---|
| 710 | return EINVAL; |
---|
| 711 | } |
---|
[5e9b32b] | 712 | } |
---|
| 713 | |
---|
| 714 | /*PAGE |
---|
| 715 | * |
---|
| 716 | * 16.1.2 Thread Creation, P1003.1c/Draft 10, p. 144 |
---|
| 717 | */ |
---|
| 718 | |
---|
| 719 | int pthread_create( |
---|
[974ff40] | 720 | pthread_t *thread, |
---|
| 721 | const pthread_attr_t *attr, |
---|
| 722 | void *(*start_routine)( void * ), |
---|
| 723 | void *arg |
---|
[5e9b32b] | 724 | ) |
---|
| 725 | { |
---|
[624133c] | 726 | const pthread_attr_t *the_attr; |
---|
| 727 | Priority_Control core_priority; |
---|
| 728 | Thread_CPU_budget_algorithms budget_algorithm; |
---|
| 729 | Thread_CPU_budget_algorithm_callout budget_callout; |
---|
| 730 | boolean is_fp; |
---|
| 731 | boolean status; |
---|
| 732 | Thread_Control *the_thread; |
---|
| 733 | char *default_name = "psx"; |
---|
| 734 | POSIX_API_Control *api; |
---|
| 735 | int schedpolicy = SCHED_RR; |
---|
| 736 | struct sched_param schedparam; |
---|
[5a18e04] | 737 | |
---|
[6b067c4] | 738 | the_attr = (attr) ? attr : &_POSIX_Threads_Default_attributes; |
---|
[5a18e04] | 739 | |
---|
[6b067c4] | 740 | if ( !the_attr->is_initialized ) |
---|
[5a18e04] | 741 | return EINVAL; |
---|
| 742 | |
---|
| 743 | /* |
---|
| 744 | * Core Thread Initialize insures we get the minimum amount of |
---|
[9b4e549] | 745 | * stack space if it is allowed to allocate it itself. |
---|
[5a18e04] | 746 | */ |
---|
| 747 | |
---|
[9b4e549] | 748 | if ( the_attr->stackaddr && !_Stack_Is_enough( the_attr->stacksize ) ) |
---|
| 749 | return EINVAL; |
---|
| 750 | |
---|
[5a18e04] | 751 | #if 0 |
---|
| 752 | int cputime_clock_allowed; /* see time.h */ |
---|
[624133c] | 753 | POSIX_NOT_IMPLEMENTED(); |
---|
[5a18e04] | 754 | #endif |
---|
[974ff40] | 755 | |
---|
[e72d995a] | 756 | /* |
---|
| 757 | * P1003.1c/D10, p. 121. |
---|
| 758 | * |
---|
| 759 | * If inheritsched is set to PTHREAD_INHERIT_SCHED, then this thread |
---|
| 760 | * inherits scheduling attributes from the creating thread. If it is |
---|
| 761 | * PTHREAD_EXPLICIT_SCHED, then scheduling parameters come from the |
---|
| 762 | * attributes structure. |
---|
| 763 | */ |
---|
| 764 | |
---|
[6b067c4] | 765 | switch ( the_attr->inheritsched ) { |
---|
[e72d995a] | 766 | case PTHREAD_INHERIT_SCHED: |
---|
[c48e0ee] | 767 | api = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 768 | schedpolicy = api->schedpolicy; |
---|
[9b4e549] | 769 | schedparam = api->schedparam; |
---|
[e72d995a] | 770 | break; |
---|
[9b4e549] | 771 | |
---|
[e72d995a] | 772 | case PTHREAD_EXPLICIT_SCHED: |
---|
[6b067c4] | 773 | schedpolicy = the_attr->schedpolicy; |
---|
[9b4e549] | 774 | schedparam = the_attr->schedparam; |
---|
[e72d995a] | 775 | break; |
---|
[9b4e549] | 776 | |
---|
| 777 | default: |
---|
| 778 | return EINVAL; |
---|
[e72d995a] | 779 | } |
---|
| 780 | |
---|
[2c207d1f] | 781 | /* |
---|
| 782 | * Check the contentionscope since rtems only supports PROCESS wide |
---|
| 783 | * contention (i.e. no system wide contention). |
---|
| 784 | */ |
---|
| 785 | |
---|
| 786 | if ( the_attr->contentionscope != PTHREAD_SCOPE_PROCESS ) |
---|
| 787 | return ENOSYS; |
---|
| 788 | |
---|
[ece8c9a] | 789 | /* |
---|
[c48e0ee] | 790 | * Interpret the scheduling parameters. |
---|
[ece8c9a] | 791 | */ |
---|
[c48e0ee] | 792 | |
---|
[624133c] | 793 | if ( !_POSIX_Priority_Is_valid( schedparam.sched_priority ) ) |
---|
[ece8c9a] | 794 | return EINVAL; |
---|
| 795 | |
---|
[624133c] | 796 | core_priority = _POSIX_Priority_To_core( schedparam.sched_priority ); |
---|
[ece8c9a] | 797 | |
---|
[624133c] | 798 | /* |
---|
| 799 | * Set the core scheduling policy information. |
---|
| 800 | */ |
---|
| 801 | |
---|
| 802 | budget_callout = NULL; |
---|
| 803 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
---|
| 804 | |
---|
[c48e0ee] | 805 | switch ( schedpolicy ) { |
---|
| 806 | case SCHED_OTHER: |
---|
[624133c] | 807 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE; |
---|
| 808 | break; |
---|
| 809 | |
---|
[c48e0ee] | 810 | case SCHED_FIFO: |
---|
[624133c] | 811 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
---|
[c48e0ee] | 812 | break; |
---|
[624133c] | 813 | |
---|
[c48e0ee] | 814 | case SCHED_RR: |
---|
[624133c] | 815 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE; |
---|
[c48e0ee] | 816 | break; |
---|
[624133c] | 817 | |
---|
[c48e0ee] | 818 | case SCHED_SPORADIC: |
---|
[624133c] | 819 | budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT; |
---|
| 820 | budget_callout = _POSIX_Threads_Sporadic_budget_callout; |
---|
| 821 | |
---|
| 822 | if ( _POSIX_Timespec_to_interval( &schedparam.ss_replenish_period ) < |
---|
| 823 | _POSIX_Timespec_to_interval( &schedparam.ss_initial_budget ) ) |
---|
| 824 | return EINVAL; |
---|
| 825 | |
---|
| 826 | if ( !_POSIX_Priority_Is_valid( schedparam.ss_low_priority ) ) |
---|
| 827 | return EINVAL; |
---|
| 828 | |
---|
[c48e0ee] | 829 | break; |
---|
[65a5c1b] | 830 | |
---|
| 831 | default: |
---|
| 832 | return EINVAL; |
---|
[c48e0ee] | 833 | } |
---|
| 834 | |
---|
[ece8c9a] | 835 | /* |
---|
[7f72217e] | 836 | * Currently all POSIX threads are floating point if the hardware |
---|
| 837 | * supports it. |
---|
[ece8c9a] | 838 | */ |
---|
| 839 | |
---|
[7f72217e] | 840 | is_fp = CPU_HARDWARE_FP; |
---|
[ece8c9a] | 841 | |
---|
| 842 | /* |
---|
| 843 | * Disable dispatch for protection |
---|
| 844 | */ |
---|
| 845 | |
---|
| 846 | _Thread_Disable_dispatch(); |
---|
| 847 | |
---|
| 848 | /* |
---|
| 849 | * Allocate the thread control block. |
---|
| 850 | * |
---|
| 851 | * NOTE: Global threads are not currently supported. |
---|
| 852 | */ |
---|
| 853 | |
---|
| 854 | the_thread = _POSIX_Threads_Allocate(); |
---|
| 855 | |
---|
| 856 | if ( !the_thread ) { |
---|
| 857 | _Thread_Enable_dispatch(); |
---|
| 858 | return EINVAL; |
---|
| 859 | } |
---|
| 860 | |
---|
| 861 | /* |
---|
| 862 | * Initialize the core thread for this task. |
---|
| 863 | */ |
---|
| 864 | |
---|
| 865 | status = _Thread_Initialize( |
---|
| 866 | &_POSIX_Threads_Information, |
---|
| 867 | the_thread, |
---|
[6b067c4] | 868 | the_attr->stackaddr, |
---|
| 869 | the_attr->stacksize, |
---|
[ece8c9a] | 870 | is_fp, |
---|
| 871 | core_priority, |
---|
| 872 | TRUE, /* preemptible */ |
---|
[624133c] | 873 | budget_algorithm, |
---|
| 874 | budget_callout, |
---|
[ece8c9a] | 875 | 0, /* isr level */ |
---|
| 876 | &default_name /* posix threads don't have a name */ |
---|
| 877 | ); |
---|
| 878 | |
---|
| 879 | if ( !status ) { |
---|
| 880 | _POSIX_Threads_Free( the_thread ); |
---|
| 881 | _Thread_Enable_dispatch(); |
---|
| 882 | return EINVAL; |
---|
| 883 | } |
---|
| 884 | |
---|
[e811d68] | 885 | /* |
---|
| 886 | * finish initializing the per API structure |
---|
| 887 | */ |
---|
| 888 | |
---|
| 889 | |
---|
| 890 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 891 | |
---|
[9b4e549] | 892 | api->Attributes = *the_attr; |
---|
[e811d68] | 893 | api->detachstate = attr->detachstate; |
---|
[9b4e549] | 894 | api->schedpolicy = schedpolicy; |
---|
| 895 | api->schedparam = schedparam; |
---|
[e811d68] | 896 | |
---|
[8f857992] | 897 | _Thread_queue_Initialize( |
---|
| 898 | &api->Join_List, |
---|
| 899 | OBJECTS_NO_CLASS, /* only used for proxy operations */ |
---|
| 900 | THREAD_QUEUE_DISCIPLINE_FIFO, |
---|
| 901 | 0, /* XXX join blocking state */ |
---|
| 902 | NULL, /* no extract proxy handler */ |
---|
| 903 | 0 |
---|
| 904 | ); |
---|
| 905 | |
---|
[9b4e549] | 906 | /* |
---|
| 907 | * POSIX threads are allocated and started in one operation. |
---|
| 908 | */ |
---|
| 909 | |
---|
[cfcfdf0] | 910 | status = _Thread_Start( |
---|
| 911 | the_thread, |
---|
| 912 | THREAD_START_POINTER, |
---|
| 913 | start_routine, |
---|
| 914 | arg, |
---|
| 915 | 0 /* unused */ |
---|
| 916 | ); |
---|
| 917 | |
---|
[624133c] | 918 | if ( schedpolicy == SCHED_SPORADIC ) { |
---|
| 919 | _Watchdog_Initialize( |
---|
| 920 | &api->Sporadic_timer, |
---|
| 921 | _POSIX_Threads_Sporadic_budget_TSR, |
---|
| 922 | the_thread->Object.id, |
---|
| 923 | the_thread |
---|
| 924 | ); |
---|
| 925 | |
---|
| 926 | _Watchdog_Insert_ticks( |
---|
| 927 | &api->Sporadic_timer, |
---|
| 928 | _POSIX_Timespec_to_interval( &api->schedparam.ss_replenish_period ) |
---|
| 929 | ); |
---|
| 930 | } |
---|
| 931 | |
---|
[cfcfdf0] | 932 | /* |
---|
| 933 | * _Thread_Start only fails if the thread was in the incorrect state |
---|
| 934 | */ |
---|
| 935 | |
---|
| 936 | if ( !status ) { |
---|
| 937 | _POSIX_Threads_Free( the_thread ); |
---|
| 938 | _Thread_Enable_dispatch(); |
---|
| 939 | return EINVAL; |
---|
| 940 | } |
---|
| 941 | |
---|
| 942 | /* |
---|
| 943 | * Return the id and indicate we successfully created the thread |
---|
| 944 | */ |
---|
| 945 | |
---|
[ece8c9a] | 946 | *thread = the_thread->Object.id; |
---|
| 947 | |
---|
| 948 | _Thread_Enable_dispatch(); |
---|
| 949 | |
---|
| 950 | return 0; |
---|
[5e9b32b] | 951 | } |
---|
| 952 | |
---|
| 953 | /*PAGE |
---|
| 954 | * |
---|
| 955 | * 16.1.3 Wait for Thread Termination, P1003.1c/Draft 10, p. 147 |
---|
| 956 | */ |
---|
| 957 | |
---|
| 958 | int pthread_join( |
---|
| 959 | pthread_t thread, |
---|
| 960 | void **value_ptr |
---|
| 961 | ) |
---|
| 962 | { |
---|
[e811d68] | 963 | register Thread_Control *the_thread; |
---|
| 964 | POSIX_API_Control *api; |
---|
| 965 | Objects_Locations location; |
---|
| 966 | |
---|
| 967 | the_thread = _POSIX_Threads_Get( thread, &location ); |
---|
| 968 | switch ( location ) { |
---|
| 969 | case OBJECTS_ERROR: |
---|
| 970 | case OBJECTS_REMOTE: |
---|
| 971 | return ESRCH; |
---|
| 972 | case OBJECTS_LOCAL: |
---|
| 973 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 974 | |
---|
[230a0dcb] | 975 | if ( api->detachstate == PTHREAD_CREATE_DETACHED ) { |
---|
| 976 | _Thread_Enable_dispatch(); |
---|
[e811d68] | 977 | return EINVAL; |
---|
[230a0dcb] | 978 | } |
---|
[e811d68] | 979 | |
---|
[8f857992] | 980 | /* |
---|
| 981 | * Put ourself on the threads join list |
---|
| 982 | */ |
---|
[e811d68] | 983 | |
---|
[8f857992] | 984 | /* XXX is this right? */ |
---|
| 985 | |
---|
| 986 | _Thread_Executing->Wait.return_argument = (unsigned32 *) value_ptr; |
---|
| 987 | |
---|
| 988 | _Thread_queue_Enqueue( &api->Join_List, WATCHDOG_NO_TIMEOUT ); |
---|
| 989 | |
---|
[56bd4a36] | 990 | _Thread_Enable_dispatch(); |
---|
| 991 | |
---|
[8f857992] | 992 | return 0; |
---|
[e811d68] | 993 | } |
---|
| 994 | |
---|
| 995 | return POSIX_BOTTOM_REACHED(); |
---|
[5e9b32b] | 996 | } |
---|
| 997 | |
---|
| 998 | /*PAGE |
---|
| 999 | * |
---|
| 1000 | * 16.1.4 Detaching a Thread, P1003.1c/Draft 10, p. 149 |
---|
| 1001 | */ |
---|
| 1002 | |
---|
| 1003 | int pthread_detach( |
---|
| 1004 | pthread_t thread |
---|
| 1005 | ) |
---|
| 1006 | { |
---|
[e811d68] | 1007 | register Thread_Control *the_thread; |
---|
| 1008 | POSIX_API_Control *api; |
---|
| 1009 | Objects_Locations location; |
---|
| 1010 | |
---|
| 1011 | the_thread = _POSIX_Threads_Get( thread, &location ); |
---|
| 1012 | switch ( location ) { |
---|
| 1013 | case OBJECTS_ERROR: |
---|
| 1014 | case OBJECTS_REMOTE: |
---|
| 1015 | return ESRCH; |
---|
| 1016 | case OBJECTS_LOCAL: |
---|
| 1017 | |
---|
| 1018 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 1019 | api->detachstate = PTHREAD_CREATE_DETACHED; |
---|
[230a0dcb] | 1020 | _Thread_Enable_dispatch(); |
---|
[e811d68] | 1021 | return 0; |
---|
| 1022 | } |
---|
| 1023 | |
---|
| 1024 | return POSIX_BOTTOM_REACHED(); |
---|
[5e9b32b] | 1025 | } |
---|
| 1026 | |
---|
[974ff40] | 1027 | /*PAGE |
---|
| 1028 | * |
---|
| 1029 | * 16.1.5.1 Thread Termination, p1003.1c/Draft 10, p. 150 |
---|
| 1030 | */ |
---|
| 1031 | |
---|
| 1032 | void pthread_exit( |
---|
| 1033 | void *value_ptr |
---|
| 1034 | ) |
---|
| 1035 | { |
---|
[8f857992] | 1036 | register Thread_Control *executing; |
---|
[cfcfdf0] | 1037 | register Thread_Control *the_thread; |
---|
[8f857992] | 1038 | POSIX_API_Control *api; |
---|
[cfcfdf0] | 1039 | |
---|
[8f857992] | 1040 | executing = _Thread_Executing; |
---|
[cfcfdf0] | 1041 | |
---|
| 1042 | _Thread_Disable_dispatch(); |
---|
| 1043 | |
---|
[8f857992] | 1044 | _Thread_Close( &_POSIX_Threads_Information, executing ); |
---|
| 1045 | |
---|
[cfcfdf0] | 1046 | /* |
---|
[8f857992] | 1047 | * Wakeup all the tasks which joined with this one |
---|
[cfcfdf0] | 1048 | */ |
---|
| 1049 | |
---|
[8f857992] | 1050 | api = executing->API_Extensions[ THREAD_API_POSIX ]; |
---|
| 1051 | |
---|
| 1052 | while ( (the_thread = _Thread_queue_Dequeue( &api->Join_List )) ) |
---|
| 1053 | *(void **)the_thread->Wait.return_argument = value_ptr; |
---|
| 1054 | |
---|
[65a5c1b] | 1055 | if ( api->schedpolicy == SCHED_SPORADIC ) |
---|
| 1056 | (void) _Watchdog_Remove( &api->Sporadic_timer ); |
---|
| 1057 | |
---|
[c238a218] | 1058 | /* XXX run _POSIX_Keys_Run_destructors here? */ |
---|
| 1059 | |
---|
[8f857992] | 1060 | _POSIX_Threads_Free( executing ); |
---|
[cfcfdf0] | 1061 | |
---|
| 1062 | _Thread_Enable_dispatch(); |
---|
[974ff40] | 1063 | } |
---|
[5e9b32b] | 1064 | |
---|
| 1065 | /*PAGE |
---|
| 1066 | * |
---|
| 1067 | * 16.1.6 Get Calling Thread's ID, p1003.1c/Draft 10, p. XXX |
---|
| 1068 | */ |
---|
| 1069 | |
---|
| 1070 | pthread_t pthread_self( void ) |
---|
| 1071 | { |
---|
| 1072 | return _Thread_Executing->Object.id; |
---|
| 1073 | } |
---|
| 1074 | |
---|
| 1075 | /*PAGE |
---|
| 1076 | * |
---|
| 1077 | * 16.1.7 Compare Thread IDs, p1003.1c/Draft 10, p. 153 |
---|
[65a5c1b] | 1078 | * |
---|
| 1079 | * NOTE: POSIX does not define the behavior when either thread id is invalid. |
---|
[5e9b32b] | 1080 | */ |
---|
| 1081 | |
---|
| 1082 | int pthread_equal( |
---|
| 1083 | pthread_t t1, |
---|
| 1084 | pthread_t t2 |
---|
| 1085 | ) |
---|
| 1086 | { |
---|
[230a0dcb] | 1087 | int status; |
---|
| 1088 | Objects_Locations location; |
---|
[e811d68] | 1089 | |
---|
| 1090 | /* |
---|
[230a0dcb] | 1091 | * By default this is not a match. |
---|
[e811d68] | 1092 | */ |
---|
| 1093 | |
---|
[230a0dcb] | 1094 | status = 0; |
---|
[e811d68] | 1095 | |
---|
| 1096 | /* |
---|
[230a0dcb] | 1097 | * Validate the first id and return 0 if it is not valid |
---|
[e811d68] | 1098 | */ |
---|
| 1099 | |
---|
[230a0dcb] | 1100 | (void) _POSIX_Threads_Get( t1, &location ); |
---|
[e811d68] | 1101 | switch ( location ) { |
---|
| 1102 | case OBJECTS_ERROR: |
---|
| 1103 | case OBJECTS_REMOTE: |
---|
[230a0dcb] | 1104 | break; |
---|
| 1105 | |
---|
[e811d68] | 1106 | case OBJECTS_LOCAL: |
---|
[230a0dcb] | 1107 | |
---|
| 1108 | /* |
---|
| 1109 | * Validate the second id and return 0 if it is not valid |
---|
| 1110 | */ |
---|
| 1111 | |
---|
| 1112 | (void) _POSIX_Threads_Get( t2, &location ); |
---|
| 1113 | switch ( location ) { |
---|
| 1114 | case OBJECTS_ERROR: |
---|
| 1115 | case OBJECTS_REMOTE: |
---|
| 1116 | break; |
---|
| 1117 | case OBJECTS_LOCAL: |
---|
| 1118 | status = _Objects_Are_ids_equal( t1, t2 ); |
---|
| 1119 | break; |
---|
| 1120 | } |
---|
| 1121 | _Thread_Unnest_dispatch(); |
---|
[8f857992] | 1122 | break; |
---|
[e811d68] | 1123 | } |
---|
[230a0dcb] | 1124 | |
---|
| 1125 | _Thread_Enable_dispatch(); |
---|
| 1126 | return status; |
---|
[5e9b32b] | 1127 | } |
---|
| 1128 | |
---|
| 1129 | /*PAGE |
---|
| 1130 | * |
---|
| 1131 | * 16.1.8 Dynamic Package Initialization |
---|
| 1132 | */ |
---|
| 1133 | |
---|
| 1134 | int pthread_once( |
---|
| 1135 | pthread_once_t *once_control, |
---|
| 1136 | void (*init_routine)(void) |
---|
| 1137 | ) |
---|
| 1138 | { |
---|
| 1139 | /* XXX: Should we implement this routine this way or make it a full */ |
---|
| 1140 | /* XXX: fledged object? */ |
---|
| 1141 | |
---|
| 1142 | if ( !once_control || !init_routine ) |
---|
| 1143 | return EINVAL; |
---|
| 1144 | |
---|
| 1145 | _Thread_Disable_dispatch(); |
---|
| 1146 | |
---|
| 1147 | if ( !once_control->is_initialized ) { |
---|
| 1148 | |
---|
| 1149 | once_control->is_initialized = TRUE; |
---|
| 1150 | once_control->init_executed = TRUE; |
---|
| 1151 | (*init_routine)(); |
---|
| 1152 | |
---|
| 1153 | } if ( !once_control->init_executed ) { |
---|
| 1154 | |
---|
| 1155 | once_control->init_executed = TRUE; |
---|
| 1156 | (*init_routine)(); |
---|
| 1157 | |
---|
| 1158 | } |
---|
| 1159 | |
---|
| 1160 | _Thread_Enable_dispatch(); |
---|
| 1161 | return 0; |
---|
| 1162 | } |
---|
| 1163 | |
---|
| 1164 | /*PAGE |
---|
| 1165 | * |
---|
| 1166 | * 20.1.6 Accessing a Thread CPU-time Clock, P1003.4b/D8, p. 58 |
---|
| 1167 | */ |
---|
| 1168 | |
---|
| 1169 | int pthread_getcpuclockid( |
---|
| 1170 | pthread_t pid, |
---|
| 1171 | clockid_t *clock_id |
---|
| 1172 | ) |
---|
| 1173 | { |
---|
| 1174 | return POSIX_NOT_IMPLEMENTED(); |
---|
| 1175 | } |
---|
| 1176 | |
---|
| 1177 | /*PAGE |
---|
| 1178 | * |
---|
| 1179 | * 20.1.7 CPU-time Clock Thread Creation Attribute, P1003.4b/D8, p. 59 |
---|
| 1180 | */ |
---|
| 1181 | |
---|
| 1182 | int pthread_attr_setcputime( |
---|
| 1183 | pthread_attr_t *attr, |
---|
| 1184 | int clock_allowed |
---|
| 1185 | ) |
---|
| 1186 | { |
---|
| 1187 | if ( !attr || !attr->is_initialized ) |
---|
| 1188 | return EINVAL; |
---|
| 1189 | |
---|
[c238a218] | 1190 | switch ( clock_allowed ) { |
---|
| 1191 | case CLOCK_ENABLED: |
---|
| 1192 | case CLOCK_DISABLED: |
---|
| 1193 | attr->cputime_clock_allowed = clock_allowed; |
---|
| 1194 | return 0; |
---|
| 1195 | |
---|
| 1196 | default: |
---|
| 1197 | return EINVAL; |
---|
| 1198 | } |
---|
[5e9b32b] | 1199 | } |
---|
| 1200 | |
---|
| 1201 | /*PAGE |
---|
| 1202 | * |
---|
| 1203 | * 20.1.7 CPU-time Clock Thread Creation Attribute, P1003.4b/D8, p. 59 |
---|
| 1204 | */ |
---|
| 1205 | |
---|
| 1206 | int pthread_attr_getcputime( |
---|
| 1207 | pthread_attr_t *attr, |
---|
| 1208 | int *clock_allowed |
---|
| 1209 | ) |
---|
| 1210 | { |
---|
| 1211 | if ( !attr || !attr->is_initialized ) |
---|
| 1212 | return EINVAL; |
---|
| 1213 | |
---|
| 1214 | *clock_allowed = attr->cputime_clock_allowed; |
---|
| 1215 | return 0; |
---|
| 1216 | } |
---|