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added thread queue for list of threads waiting to join.

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thread is added to join list in pthread_join.

all threads waiting on the join list are flushed when the thread exits.
This commit is contained in:
Joel Sherrill
1996-06-03 22:08:18 +00:00
parent 552a345d97
commit 8f85799226
2 changed files with 66 additions and 18 deletions
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42
c/src/exec/posix/src/pthread.c
View File

@@ -694,6 +694,15 @@ int pthread_create(
api->Attributes = *attrp; api->Attributes = *attrp;
api->detachstate = attr->detachstate; api->detachstate = attr->detachstate;
_Thread_queue_Initialize(
&api->Join_List,
OBJECTS_NO_CLASS, /* only used for proxy operations */
THREAD_QUEUE_DISCIPLINE_FIFO,
0, /* XXX join blocking state */
NULL, /* no extract proxy handler */
0
);
status = _Thread_Start( status = _Thread_Start(
the_thread, the_thread,
THREAD_START_POINTER, THREAD_START_POINTER,
@@ -750,10 +759,17 @@ int pthread_join(
if ( api->detachstate == PTHREAD_CREATE_DETACHED ) if ( api->detachstate == PTHREAD_CREATE_DETACHED )
return EINVAL; return EINVAL;
/* XXX do something useful here */ /*
* Put ourself on the threads join list
*/
return POSIX_NOT_IMPLEMENTED(); /* XXX is this right? */
break;
_Thread_Executing->Wait.return_argument = (unsigned32 *) value_ptr;
_Thread_queue_Enqueue( &api->Join_List, WATCHDOG_NO_TIMEOUT );
return 0;
} }
return POSIX_BOTTOM_REACHED(); return POSIX_BOTTOM_REACHED();
@@ -796,21 +812,28 @@ void pthread_exit(
void *value_ptr void *value_ptr
) )
{ {
register Thread_Control *executing;
register Thread_Control *the_thread; register Thread_Control *the_thread;
POSIX_API_Control *api;
the_thread = _Thread_Executing; executing = _Thread_Executing;
_Thread_Disable_dispatch(); _Thread_Disable_dispatch();
_Thread_Close( &_POSIX_Threads_Information, executing );
/* /*
* XXX Will need to deal with join/detach * Wakeup all the tasks which joined with this one
*/ */
api = executing->API_Extensions[ THREAD_API_POSIX ];
while ( (the_thread = _Thread_queue_Dequeue( &api->Join_List )) )
*(void **)the_thread->Wait.return_argument = value_ptr;
/* XXX run _POSIX_Keys_Run_destructors here? */ /* XXX run _POSIX_Keys_Run_destructors here? */
_Thread_Close( &_POSIX_Threads_Information, the_thread ); _POSIX_Threads_Free( executing );
_POSIX_Threads_Free( the_thread );
_Thread_Enable_dispatch(); _Thread_Enable_dispatch();
} }
@@ -863,8 +886,9 @@ int pthread_equal(
case OBJECTS_REMOTE: case OBJECTS_REMOTE:
return 0; return 0;
case OBJECTS_LOCAL: case OBJECTS_LOCAL:
return _Objects_Are_ids_equal( t1, t2 ); break;
} }
return _Objects_Are_ids_equal( t1, t2 );
} }
/*PAGE /*PAGE

42
cpukit/posix/src/pthread.c
View File

@@ -694,6 +694,15 @@ int pthread_create(
api->Attributes = *attrp; api->Attributes = *attrp;
api->detachstate = attr->detachstate; api->detachstate = attr->detachstate;
_Thread_queue_Initialize(
&api->Join_List,
OBJECTS_NO_CLASS, /* only used for proxy operations */
THREAD_QUEUE_DISCIPLINE_FIFO,
0, /* XXX join blocking state */
NULL, /* no extract proxy handler */
0
);
status = _Thread_Start( status = _Thread_Start(
the_thread, the_thread,
THREAD_START_POINTER, THREAD_START_POINTER,
@@ -750,10 +759,17 @@ int pthread_join(
if ( api->detachstate == PTHREAD_CREATE_DETACHED ) if ( api->detachstate == PTHREAD_CREATE_DETACHED )
return EINVAL; return EINVAL;
/* XXX do something useful here */ /*
* Put ourself on the threads join list
*/
return POSIX_NOT_IMPLEMENTED(); /* XXX is this right? */
break;
_Thread_Executing->Wait.return_argument = (unsigned32 *) value_ptr;
_Thread_queue_Enqueue( &api->Join_List, WATCHDOG_NO_TIMEOUT );
return 0;
} }
return POSIX_BOTTOM_REACHED(); return POSIX_BOTTOM_REACHED();
@@ -796,21 +812,28 @@ void pthread_exit(
void *value_ptr void *value_ptr
) )
{ {
register Thread_Control *executing;
register Thread_Control *the_thread; register Thread_Control *the_thread;
POSIX_API_Control *api;
the_thread = _Thread_Executing; executing = _Thread_Executing;
_Thread_Disable_dispatch(); _Thread_Disable_dispatch();
_Thread_Close( &_POSIX_Threads_Information, executing );
/* /*
* XXX Will need to deal with join/detach * Wakeup all the tasks which joined with this one
*/ */
api = executing->API_Extensions[ THREAD_API_POSIX ];
while ( (the_thread = _Thread_queue_Dequeue( &api->Join_List )) )
*(void **)the_thread->Wait.return_argument = value_ptr;
/* XXX run _POSIX_Keys_Run_destructors here? */ /* XXX run _POSIX_Keys_Run_destructors here? */
_Thread_Close( &_POSIX_Threads_Information, the_thread ); _POSIX_Threads_Free( executing );
_POSIX_Threads_Free( the_thread );
_Thread_Enable_dispatch(); _Thread_Enable_dispatch();
} }
@@ -863,8 +886,9 @@ int pthread_equal(
case OBJECTS_REMOTE: case OBJECTS_REMOTE:
return 0; return 0;
case OBJECTS_LOCAL: case OBJECTS_LOCAL:
return _Objects_Are_ids_equal( t1, t2 ); break;
} }
return _Objects_Are_ids_equal( t1, t2 );
} }
/*PAGE /*PAGE