2 * Server-side thread management
4 * Copyright (C) 1998 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
32 #include <sys/types.h>
54 struct thread_wait
*next
; /* next wait structure for this thread */
55 struct thread
*thread
; /* owner thread */
56 int count
; /* count of objects */
58 void *cookie
; /* magic cookie to return to client */
59 struct timeval timeout
;
60 struct timeout_user
*user
;
61 struct wait_queue_entry queues
[1];
64 /* asynchronous procedure calls */
68 struct list entry
; /* queue linked list */
69 struct object
*owner
; /* object that queued this apc */
70 void *func
; /* function to call in client */
71 enum apc_type type
; /* type of apc function */
72 int nb_args
; /* number of arguments */
73 void *arg1
; /* function arguments */
79 /* thread operations */
81 static void dump_thread( struct object
*obj
, int verbose
);
82 static int thread_signaled( struct object
*obj
, struct thread
*thread
);
83 static void thread_poll_event( struct fd
*fd
, int event
);
84 static void destroy_thread( struct object
*obj
);
85 static struct thread_apc
*thread_dequeue_apc( struct thread
*thread
, int system_only
);
87 static const struct object_ops thread_ops
=
89 sizeof(struct thread
), /* size */
90 dump_thread
, /* dump */
91 add_queue
, /* add_queue */
92 remove_queue
, /* remove_queue */
93 thread_signaled
, /* signaled */
94 no_satisfied
, /* satisfied */
95 no_get_fd
, /* get_fd */
96 destroy_thread
/* destroy */
99 static const struct fd_ops thread_fd_ops
=
101 NULL
, /* get_poll_events */
102 thread_poll_event
, /* poll_event */
103 no_flush
, /* flush */
104 no_get_file_info
, /* get_file_info */
105 no_queue_async
, /* queue_async */
106 no_cancel_async
/* cancel_async */
109 static struct list thread_list
= LIST_INIT(thread_list
);
110 static struct thread
*booting_thread
;
112 /* initialize the structure for a newly allocated thread */
113 inline static void init_thread_structure( struct thread
*thread
)
117 thread
->unix_pid
= -1; /* not known yet */
118 thread
->unix_tid
= -1; /* not known yet */
119 thread
->context
= NULL
;
121 thread
->debug_ctx
= NULL
;
122 thread
->debug_event
= NULL
;
123 thread
->queue
= NULL
;
126 thread
->req_data
= NULL
;
127 thread
->req_toread
= 0;
128 thread
->reply_data
= NULL
;
129 thread
->reply_towrite
= 0;
130 thread
->request_fd
= NULL
;
131 thread
->reply_fd
= NULL
;
132 thread
->wait_fd
= NULL
;
133 thread
->state
= RUNNING
;
134 thread
->attached
= 0;
135 thread
->exit_code
= 0;
136 thread
->priority
= THREAD_PRIORITY_NORMAL
;
137 thread
->affinity
= 1;
139 thread
->creation_time
= time(NULL
);
140 thread
->exit_time
= 0;
142 list_init( &thread
->mutex_list
);
143 list_init( &thread
->system_apc
);
144 list_init( &thread
->user_apc
);
146 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
147 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
150 /* create a new thread */
151 struct thread
*create_thread( int fd
, struct process
*process
)
153 struct thread
*thread
;
155 if (!(thread
= alloc_object( &thread_ops
))) return NULL
;
157 init_thread_structure( thread
);
159 thread
->process
= (struct process
*)grab_object( process
);
160 if (!current
) current
= thread
;
162 if (!booting_thread
) /* first thread ever */
164 booting_thread
= thread
;
165 lock_master_socket(1);
168 list_add_head( &thread_list
, &thread
->entry
);
170 if (!(thread
->id
= alloc_ptid( thread
)))
172 release_object( thread
);
175 if (!(thread
->request_fd
= create_anonymous_fd( &thread_fd_ops
, fd
, &thread
->obj
)))
177 release_object( thread
);
181 thread
->token
= (struct token
*) grab_object( process
->token
);
183 set_fd_events( thread
->request_fd
, POLLIN
); /* start listening to events */
184 add_process_thread( thread
->process
, thread
);
188 /* handle a client event */
189 static void thread_poll_event( struct fd
*fd
, int event
)
191 struct thread
*thread
= get_fd_user( fd
);
192 assert( thread
->obj
.ops
== &thread_ops
);
194 if (event
& (POLLERR
| POLLHUP
)) kill_thread( thread
, 0 );
195 else if (event
& POLLIN
) read_request( thread
);
196 else if (event
& POLLOUT
) write_reply( thread
);
199 /* cleanup everything that is no longer needed by a dead thread */
200 /* used by destroy_thread and kill_thread */
201 static void cleanup_thread( struct thread
*thread
)
204 struct thread_apc
*apc
;
206 while ((apc
= thread_dequeue_apc( thread
, 0 ))) free( apc
);
207 if (thread
->req_data
) free( thread
->req_data
);
208 if (thread
->reply_data
) free( thread
->reply_data
);
209 if (thread
->request_fd
) release_object( thread
->request_fd
);
210 if (thread
->reply_fd
) release_object( thread
->reply_fd
);
211 if (thread
->wait_fd
) release_object( thread
->wait_fd
);
212 free_msg_queue( thread
);
213 cleanup_clipboard_thread(thread
);
214 destroy_thread_windows( thread
);
215 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
217 if (thread
->inflight
[i
].client
!= -1)
219 close( thread
->inflight
[i
].server
);
220 thread
->inflight
[i
].client
= thread
->inflight
[i
].server
= -1;
223 thread
->req_data
= NULL
;
224 thread
->reply_data
= NULL
;
225 thread
->request_fd
= NULL
;
226 thread
->reply_fd
= NULL
;
227 thread
->wait_fd
= NULL
;
229 if (thread
== booting_thread
) /* killing booting thread */
231 booting_thread
= NULL
;
232 lock_master_socket(0);
236 /* destroy a thread when its refcount is 0 */
237 static void destroy_thread( struct object
*obj
)
239 struct thread_apc
*apc
;
240 struct thread
*thread
= (struct thread
*)obj
;
241 assert( obj
->ops
== &thread_ops
);
243 assert( !thread
->debug_ctx
); /* cannot still be debugging something */
244 list_remove( &thread
->entry
);
245 while ((apc
= thread_dequeue_apc( thread
, 0 ))) free( apc
);
246 cleanup_thread( thread
);
247 release_object( thread
->process
);
248 if (thread
->id
) free_ptid( thread
->id
);
249 if (thread
->token
) release_object( thread
->token
);
252 /* dump a thread on stdout for debugging purposes */
253 static void dump_thread( struct object
*obj
, int verbose
)
255 struct thread
*thread
= (struct thread
*)obj
;
256 assert( obj
->ops
== &thread_ops
);
258 fprintf( stderr
, "Thread id=%04x unix pid=%d unix tid=%d teb=%p state=%d\n",
259 thread
->id
, thread
->unix_pid
, thread
->unix_tid
, thread
->teb
, thread
->state
);
262 static int thread_signaled( struct object
*obj
, struct thread
*thread
)
264 struct thread
*mythread
= (struct thread
*)obj
;
265 return (mythread
->state
== TERMINATED
);
268 /* get a thread pointer from a thread id (and increment the refcount) */
269 struct thread
*get_thread_from_id( thread_id_t id
)
271 struct object
*obj
= get_ptid_entry( id
);
273 if (obj
&& obj
->ops
== &thread_ops
) return (struct thread
*)grab_object( obj
);
274 set_win32_error( ERROR_INVALID_THREAD_ID
);
278 /* get a thread from a handle (and increment the refcount) */
279 struct thread
*get_thread_from_handle( obj_handle_t handle
, unsigned int access
)
281 return (struct thread
*)get_handle_obj( current
->process
, handle
,
282 access
, &thread_ops
);
285 /* find a thread from a Unix pid */
286 struct thread
*get_thread_from_pid( int pid
)
288 struct thread
*thread
;
290 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
292 if (thread
->unix_tid
== pid
) return thread
;
294 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
296 if (thread
->unix_pid
== pid
) return thread
;
301 /* set all information about a thread */
302 static void set_thread_info( struct thread
*thread
,
303 const struct set_thread_info_request
*req
)
305 if (req
->mask
& SET_THREAD_INFO_PRIORITY
)
306 thread
->priority
= req
->priority
;
307 if (req
->mask
& SET_THREAD_INFO_AFFINITY
)
309 if (req
->affinity
!= 1) set_error( STATUS_INVALID_PARAMETER
);
310 else thread
->affinity
= req
->affinity
;
314 /* stop a thread (at the Unix level) */
315 void stop_thread( struct thread
*thread
)
317 /* can't stop a thread while initialisation is in progress */
318 if (is_process_init_done(thread
->process
)) send_thread_signal( thread
, SIGUSR1
);
321 /* suspend a thread */
322 static int suspend_thread( struct thread
*thread
)
324 int old_count
= thread
->suspend
;
325 if (thread
->suspend
< MAXIMUM_SUSPEND_COUNT
)
327 if (!(thread
->process
->suspend
+ thread
->suspend
++)) stop_thread( thread
);
329 else set_error( STATUS_SUSPEND_COUNT_EXCEEDED
);
333 /* resume a thread */
334 static int resume_thread( struct thread
*thread
)
336 int old_count
= thread
->suspend
;
337 if (thread
->suspend
> 0)
339 if (!(--thread
->suspend
+ thread
->process
->suspend
)) wake_thread( thread
);
344 /* add a thread to an object wait queue; return 1 if OK, 0 on error */
345 int add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
349 list_add_tail( &obj
->wait_queue
, &entry
->entry
);
353 /* remove a thread from an object wait queue */
354 void remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
356 list_remove( &entry
->entry
);
357 release_object( obj
);
361 static void end_wait( struct thread
*thread
)
363 struct thread_wait
*wait
= thread
->wait
;
364 struct wait_queue_entry
*entry
;
368 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
369 entry
->obj
->ops
->remove_queue( entry
->obj
, entry
);
370 if (wait
->user
) remove_timeout_user( wait
->user
);
371 thread
->wait
= wait
->next
;
375 /* build the thread wait structure */
376 static int wait_on( int count
, struct object
*objects
[], int flags
, const abs_time_t
*timeout
)
378 struct thread_wait
*wait
;
379 struct wait_queue_entry
*entry
;
382 if (!(wait
= mem_alloc( sizeof(*wait
) + (count
-1) * sizeof(*entry
) ))) return 0;
383 wait
->next
= current
->wait
;
384 wait
->thread
= current
;
388 current
->wait
= wait
;
389 if (flags
& SELECT_TIMEOUT
)
391 wait
->timeout
.tv_sec
= timeout
->sec
;
392 wait
->timeout
.tv_usec
= timeout
->usec
;
395 for (i
= 0, entry
= wait
->queues
; i
< count
; i
++, entry
++)
397 struct object
*obj
= objects
[i
];
398 entry
->thread
= current
;
399 if (!obj
->ops
->add_queue( obj
, entry
))
409 /* check if the thread waiting condition is satisfied */
410 static int check_wait( struct thread
*thread
)
413 struct thread_wait
*wait
= thread
->wait
;
414 struct wait_queue_entry
*entry
= wait
->queues
;
416 /* Suspended threads may not acquire locks */
417 if( thread
->process
->suspend
+ thread
->suspend
> 0 ) return -1;
420 if (wait
->flags
& SELECT_ALL
)
423 /* Note: we must check them all anyway, as some objects may
424 * want to do something when signaled, even if others are not */
425 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
426 not_ok
|= !entry
->obj
->ops
->signaled( entry
->obj
, thread
);
427 if (not_ok
) goto other_checks
;
428 /* Wait satisfied: tell it to all objects */
430 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
431 if (entry
->obj
->ops
->satisfied( entry
->obj
, thread
))
432 signaled
= STATUS_ABANDONED_WAIT_0
;
437 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
439 if (!entry
->obj
->ops
->signaled( entry
->obj
, thread
)) continue;
440 /* Wait satisfied: tell it to the object */
442 if (entry
->obj
->ops
->satisfied( entry
->obj
, thread
))
443 signaled
= i
+ STATUS_ABANDONED_WAIT_0
;
449 if ((wait
->flags
& SELECT_INTERRUPTIBLE
) && !list_empty(&thread
->system_apc
)) return STATUS_USER_APC
;
450 if ((wait
->flags
& SELECT_ALERTABLE
) && !list_empty(&thread
->user_apc
)) return STATUS_USER_APC
;
451 if (wait
->flags
& SELECT_TIMEOUT
)
454 gettimeofday( &now
, NULL
);
455 if (!time_before( &now
, &wait
->timeout
)) return STATUS_TIMEOUT
;
460 /* send the wakeup signal to a thread */
461 static int send_thread_wakeup( struct thread
*thread
, void *cookie
, int signaled
)
463 struct wake_up_reply reply
;
466 reply
.cookie
= cookie
;
467 reply
.signaled
= signaled
;
468 if ((ret
= write( get_unix_fd( thread
->wait_fd
), &reply
, sizeof(reply
) )) == sizeof(reply
))
471 fatal_protocol_error( thread
, "partial wakeup write %d\n", ret
);
472 else if (errno
== EPIPE
)
473 kill_thread( thread
, 0 ); /* normal death */
475 fatal_protocol_perror( thread
, "write" );
479 /* attempt to wake up a thread */
480 /* return >0 if OK, 0 if the wait condition is still not satisfied */
481 int wake_thread( struct thread
*thread
)
486 for (count
= 0; thread
->wait
; count
++)
488 if ((signaled
= check_wait( thread
)) == -1) break;
490 cookie
= thread
->wait
->cookie
;
491 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d cookie=%p\n",
492 thread
->id
, signaled
, cookie
);
494 if (send_thread_wakeup( thread
, cookie
, signaled
) == -1) /* error */
500 /* thread wait timeout */
501 static void thread_timeout( void *ptr
)
503 struct thread_wait
*wait
= ptr
;
504 struct thread
*thread
= wait
->thread
;
505 void *cookie
= wait
->cookie
;
508 if (thread
->wait
!= wait
) return; /* not the top-level wait, ignore it */
509 if (thread
->suspend
+ thread
->process
->suspend
> 0) return; /* suspended, ignore it */
511 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d cookie=%p\n",
512 thread
->id
, STATUS_TIMEOUT
, cookie
);
514 if (send_thread_wakeup( thread
, cookie
, STATUS_TIMEOUT
) == -1) return;
515 /* check if other objects have become signaled in the meantime */
516 wake_thread( thread
);
519 /* select on a list of handles */
520 static void select_on( int count
, void *cookie
, const obj_handle_t
*handles
,
521 int flags
, const abs_time_t
*timeout
)
524 struct object
*objects
[MAXIMUM_WAIT_OBJECTS
];
526 if ((count
< 0) || (count
> MAXIMUM_WAIT_OBJECTS
))
528 set_error( STATUS_INVALID_PARAMETER
);
531 for (i
= 0; i
< count
; i
++)
533 if (!(objects
[i
] = get_handle_obj( current
->process
, handles
[i
], SYNCHRONIZE
, NULL
)))
537 if (i
< count
) goto done
;
538 if (!wait_on( count
, objects
, flags
, timeout
)) goto done
;
540 if ((ret
= check_wait( current
)) != -1)
542 /* condition is already satisfied */
548 /* now we need to wait */
549 if (flags
& SELECT_TIMEOUT
)
551 if (!(current
->wait
->user
= add_timeout_user( ¤t
->wait
->timeout
,
552 thread_timeout
, current
->wait
)))
558 current
->wait
->cookie
= cookie
;
559 set_error( STATUS_PENDING
);
562 while (--i
>= 0) release_object( objects
[i
] );
565 /* attempt to wake threads sleeping on the object wait queue */
566 void wake_up( struct object
*obj
, int max
)
568 struct list
*ptr
, *next
;
570 LIST_FOR_EACH_SAFE( ptr
, next
, &obj
->wait_queue
)
572 struct wait_queue_entry
*entry
= LIST_ENTRY( ptr
, struct wait_queue_entry
, entry
);
573 if (wake_thread( entry
->thread
))
575 if (max
&& !--max
) break;
580 /* queue an async procedure call */
581 int thread_queue_apc( struct thread
*thread
, struct object
*owner
, void *func
,
582 enum apc_type type
, int system
, void *arg1
, void *arg2
, void *arg3
)
584 struct thread_apc
*apc
;
585 struct list
*queue
= system
? &thread
->system_apc
: &thread
->user_apc
;
587 /* cancel a possible previous APC with the same owner */
588 if (owner
) thread_cancel_apc( thread
, owner
, system
);
589 if (thread
->state
== TERMINATED
) return 0;
591 if (!(apc
= mem_alloc( sizeof(*apc
) ))) return 0;
598 list_add_tail( queue
, &apc
->entry
);
599 if (!list_prev( queue
, &apc
->entry
)) /* first one */
600 wake_thread( thread
);
605 /* cancel the async procedure call owned by a specific object */
606 void thread_cancel_apc( struct thread
*thread
, struct object
*owner
, int system
)
608 struct thread_apc
*apc
;
609 struct list
*queue
= system
? &thread
->system_apc
: &thread
->user_apc
;
610 LIST_FOR_EACH_ENTRY( apc
, queue
, struct thread_apc
, entry
)
612 if (apc
->owner
!= owner
) continue;
613 list_remove( &apc
->entry
);
619 /* remove the head apc from the queue; the returned pointer must be freed by the caller */
620 static struct thread_apc
*thread_dequeue_apc( struct thread
*thread
, int system_only
)
622 struct thread_apc
*apc
= NULL
;
623 struct list
*ptr
= list_head( &thread
->system_apc
);
625 if (!ptr
&& !system_only
) ptr
= list_head( &thread
->user_apc
);
628 apc
= LIST_ENTRY( ptr
, struct thread_apc
, entry
);
634 /* add an fd to the inflight list */
635 /* return list index, or -1 on error */
636 int thread_add_inflight_fd( struct thread
*thread
, int client
, int server
)
640 if (server
== -1) return -1;
647 /* first check if we already have an entry for this fd */
648 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
649 if (thread
->inflight
[i
].client
== client
)
651 close( thread
->inflight
[i
].server
);
652 thread
->inflight
[i
].server
= server
;
656 /* now find a free spot to store it */
657 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
658 if (thread
->inflight
[i
].client
== -1)
660 thread
->inflight
[i
].client
= client
;
661 thread
->inflight
[i
].server
= server
;
667 /* get an inflight fd and purge it from the list */
668 /* the fd must be closed when no longer used */
669 int thread_get_inflight_fd( struct thread
*thread
, int client
)
673 if (client
== -1) return -1;
677 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
679 if (thread
->inflight
[i
].client
== client
)
681 ret
= thread
->inflight
[i
].server
;
682 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
686 } while (!receive_fd( thread
->process
)); /* in case it is still in the socket buffer */
690 /* retrieve an LDT selector entry */
691 static void get_selector_entry( struct thread
*thread
, int entry
,
692 unsigned int *base
, unsigned int *limit
,
693 unsigned char *flags
)
695 if (!thread
->process
->ldt_copy
)
697 set_error( STATUS_ACCESS_DENIED
);
702 set_error( STATUS_INVALID_PARAMETER
); /* FIXME */
705 if (suspend_for_ptrace( thread
))
707 unsigned char flags_buf
[4];
708 int *addr
= (int *)thread
->process
->ldt_copy
+ entry
;
709 if (read_thread_int( thread
, addr
, base
) == -1) goto done
;
710 if (read_thread_int( thread
, addr
+ 8192, limit
) == -1) goto done
;
711 addr
= (int *)thread
->process
->ldt_copy
+ 2*8192 + (entry
>> 2);
712 if (read_thread_int( thread
, addr
, (int *)flags_buf
) == -1) goto done
;
713 *flags
= flags_buf
[entry
& 3];
715 resume_after_ptrace( thread
);
719 /* kill a thread on the spot */
720 void kill_thread( struct thread
*thread
, int violent_death
)
722 if (thread
->state
== TERMINATED
) return; /* already killed */
723 thread
->state
= TERMINATED
;
724 thread
->exit_time
= time(NULL
);
725 if (current
== thread
) current
= NULL
;
727 fprintf( stderr
,"%04x: *killed* exit_code=%d\n",
728 thread
->id
, thread
->exit_code
);
731 while (thread
->wait
) end_wait( thread
);
732 send_thread_wakeup( thread
, NULL
, STATUS_PENDING
);
733 /* if it is waiting on the socket, we don't need to send a SIGTERM */
736 kill_console_processes( thread
, 0 );
737 debug_exit_thread( thread
);
738 abandon_mutexes( thread
);
739 remove_process_thread( thread
->process
, thread
);
740 wake_up( &thread
->obj
, 0 );
741 detach_thread( thread
, violent_death
? SIGTERM
: 0 );
742 cleanup_thread( thread
);
743 release_object( thread
);
746 /* take a snapshot of currently running threads */
747 struct thread_snapshot
*thread_snap( int *count
)
749 struct thread_snapshot
*snapshot
, *ptr
;
750 struct thread
*thread
;
753 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
754 if (thread
->state
!= TERMINATED
) total
++;
755 if (!total
|| !(snapshot
= mem_alloc( sizeof(*snapshot
) * total
))) return NULL
;
757 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
759 if (thread
->state
== TERMINATED
) continue;
760 ptr
->thread
= thread
;
761 ptr
->count
= thread
->obj
.refcount
;
762 ptr
->priority
= thread
->priority
;
763 grab_object( thread
);
770 /* signal that we are finished booting on the client side */
771 DECL_HANDLER(boot_done
)
773 debug_level
= max( debug_level
, req
->debug_level
);
774 if (current
== booting_thread
)
776 booting_thread
= (struct thread
*)~0UL; /* make sure it doesn't match other threads */
777 lock_master_socket(0); /* allow other clients now */
781 /* create a new thread */
782 DECL_HANDLER(new_thread
)
784 struct thread
*thread
;
785 int request_fd
= thread_get_inflight_fd( current
, req
->request_fd
);
787 if (request_fd
== -1 || fcntl( request_fd
, F_SETFL
, O_NONBLOCK
) == -1)
789 if (request_fd
!= -1) close( request_fd
);
790 set_error( STATUS_INVALID_HANDLE
);
794 if ((thread
= create_thread( request_fd
, current
->process
)))
796 if (req
->suspend
) thread
->suspend
++;
797 reply
->tid
= get_thread_id( thread
);
798 if ((reply
->handle
= alloc_handle( current
->process
, thread
,
799 THREAD_ALL_ACCESS
, req
->inherit
)))
801 /* thread object will be released when the thread gets killed */
804 kill_thread( thread
, 1 );
808 /* initialize a new thread */
809 DECL_HANDLER(init_thread
)
811 int reply_fd
= thread_get_inflight_fd( current
, req
->reply_fd
);
812 int wait_fd
= thread_get_inflight_fd( current
, req
->wait_fd
);
814 if (current
->unix_pid
!= -1)
816 fatal_protocol_error( current
, "init_thread: already running\n" );
819 if (reply_fd
== -1 || fcntl( reply_fd
, F_SETFL
, O_NONBLOCK
) == -1)
821 fatal_protocol_error( current
, "bad reply fd\n" );
826 fatal_protocol_error( current
, "bad wait fd\n" );
829 if (!(current
->reply_fd
= create_anonymous_fd( &thread_fd_ops
, reply_fd
, ¤t
->obj
)))
832 fatal_protocol_error( current
, "could not allocate reply fd\n" );
835 if (!(current
->wait_fd
= create_anonymous_fd( &thread_fd_ops
, wait_fd
, ¤t
->obj
)))
838 current
->unix_pid
= req
->unix_pid
;
839 current
->unix_tid
= req
->unix_tid
;
840 current
->teb
= req
->teb
;
842 if (current
->suspend
+ current
->process
->suspend
> 0) stop_thread( current
);
843 if (current
->process
->running_threads
> 1)
844 generate_debug_event( current
, CREATE_THREAD_DEBUG_EVENT
, req
->entry
);
846 reply
->pid
= get_process_id( current
->process
);
847 reply
->tid
= get_thread_id( current
);
848 reply
->boot
= (current
== booting_thread
);
849 reply
->version
= SERVER_PROTOCOL_VERSION
;
853 if (reply_fd
!= -1) close( reply_fd
);
854 if (wait_fd
!= -1) close( wait_fd
);
857 /* terminate a thread */
858 DECL_HANDLER(terminate_thread
)
860 struct thread
*thread
;
864 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_TERMINATE
)))
866 thread
->exit_code
= req
->exit_code
;
867 if (thread
!= current
) kill_thread( thread
, 1 );
871 reply
->last
= (thread
->process
->running_threads
== 1);
873 release_object( thread
);
877 /* open a handle to a thread */
878 DECL_HANDLER(open_thread
)
880 struct thread
*thread
= get_thread_from_id( req
->tid
);
885 reply
->handle
= alloc_handle( current
->process
, thread
, req
->access
, req
->inherit
);
886 release_object( thread
);
890 /* fetch information about a thread */
891 DECL_HANDLER(get_thread_info
)
893 struct thread
*thread
;
894 obj_handle_t handle
= req
->handle
;
896 if (!handle
) thread
= get_thread_from_id( req
->tid_in
);
897 else thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
);
901 reply
->pid
= get_process_id( thread
->process
);
902 reply
->tid
= get_thread_id( thread
);
903 reply
->teb
= thread
->teb
;
904 reply
->exit_code
= (thread
->state
== TERMINATED
) ? thread
->exit_code
: STILL_ACTIVE
;
905 reply
->priority
= thread
->priority
;
906 reply
->affinity
= thread
->affinity
;
907 reply
->creation_time
= thread
->creation_time
;
908 reply
->exit_time
= thread
->exit_time
;
910 release_object( thread
);
914 /* set information about a thread */
915 DECL_HANDLER(set_thread_info
)
917 struct thread
*thread
;
919 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SET_INFORMATION
)))
921 set_thread_info( thread
, req
);
922 release_object( thread
);
926 /* suspend a thread */
927 DECL_HANDLER(suspend_thread
)
929 struct thread
*thread
;
931 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
933 if (thread
->state
== TERMINATED
) set_error( STATUS_ACCESS_DENIED
);
934 else reply
->count
= suspend_thread( thread
);
935 release_object( thread
);
939 /* resume a thread */
940 DECL_HANDLER(resume_thread
)
942 struct thread
*thread
;
944 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
946 if (thread
->state
== TERMINATED
) set_error( STATUS_ACCESS_DENIED
);
947 else reply
->count
= resume_thread( thread
);
948 release_object( thread
);
952 /* select on a handle list */
955 int count
= get_req_data_size() / sizeof(int);
956 select_on( count
, req
->cookie
, get_req_data(), req
->flags
, &req
->timeout
);
959 /* queue an APC for a thread */
960 DECL_HANDLER(queue_apc
)
962 struct thread
*thread
;
963 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SET_CONTEXT
)))
965 thread_queue_apc( thread
, NULL
, req
->func
, APC_USER
, !req
->user
,
966 req
->arg1
, req
->arg2
, req
->arg3
);
967 release_object( thread
);
971 /* get next APC to call */
972 DECL_HANDLER(get_apc
)
974 struct thread_apc
*apc
;
978 if (!(apc
= thread_dequeue_apc( current
, !req
->alertable
)))
982 reply
->type
= APC_NONE
;
985 /* Optimization: ignore APCs that have a NULL func; they are only used
986 * to wake up a thread, but since we got here the thread woke up already.
987 * Exception: for APC_ASYNC_IO, func == NULL is legal.
989 if (apc
->func
|| apc
->type
== APC_ASYNC_IO
) break;
992 reply
->func
= apc
->func
;
993 reply
->type
= apc
->type
;
994 reply
->arg1
= apc
->arg1
;
995 reply
->arg2
= apc
->arg2
;
996 reply
->arg3
= apc
->arg3
;
1000 /* fetch a selector entry for a thread */
1001 DECL_HANDLER(get_selector_entry
)
1003 struct thread
*thread
;
1004 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
)))
1006 get_selector_entry( thread
, req
->entry
, &reply
->base
, &reply
->limit
, &reply
->flags
);
1007 release_object( thread
);