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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
32 #include <sys/types.h>
43 #define WIN32_NO_STATUS
57 static const unsigned int supported_cpus
= CPU_FLAG(CPU_x86
);
58 #elif defined(__x86_64__)
59 static const unsigned int supported_cpus
= CPU_FLAG(CPU_x86_64
) | CPU_FLAG(CPU_x86
);
60 #elif defined(__powerpc__)
61 static const unsigned int supported_cpus
= CPU_FLAG(CPU_POWERPC
);
62 #elif defined(__arm__)
63 static const unsigned int supported_cpus
= CPU_FLAG(CPU_ARM
);
64 #elif defined(__aarch64__)
65 static const unsigned int supported_cpus
= CPU_FLAG(CPU_ARM64
) | CPU_FLAG(CPU_ARM
);
67 #error Unsupported CPU
74 struct thread_wait
*next
; /* next wait structure for this thread */
75 struct thread
*thread
; /* owner thread */
76 int count
; /* count of objects */
79 enum select_op select
;
80 client_ptr_t key
; /* wait key for keyed events */
81 client_ptr_t cookie
; /* magic cookie to return to client */
83 struct timeout_user
*user
;
84 struct wait_queue_entry queues
[1];
87 /* asynchronous procedure calls */
91 struct object obj
; /* object header */
92 struct list entry
; /* queue linked list */
93 struct thread
*caller
; /* thread that queued this apc */
94 struct object
*owner
; /* object that queued this apc */
95 int executed
; /* has it been executed by the client? */
96 apc_call_t call
; /* call arguments */
97 apc_result_t result
; /* call results once executed */
100 static void dump_thread_apc( struct object
*obj
, int verbose
);
101 static int thread_apc_signaled( struct object
*obj
, struct wait_queue_entry
*entry
);
102 static void thread_apc_destroy( struct object
*obj
);
103 static void clear_apc_queue( struct list
*queue
);
105 static const struct object_ops thread_apc_ops
=
107 sizeof(struct thread_apc
), /* size */
108 dump_thread_apc
, /* dump */
109 no_get_type
, /* get_type */
110 add_queue
, /* add_queue */
111 remove_queue
, /* remove_queue */
112 thread_apc_signaled
, /* signaled */
113 no_satisfied
, /* satisfied */
114 no_signal
, /* signal */
115 no_get_fd
, /* get_fd */
116 no_map_access
, /* map_access */
117 default_get_sd
, /* get_sd */
118 default_set_sd
, /* set_sd */
119 no_lookup_name
, /* lookup_name */
120 no_open_file
, /* open_file */
121 no_close_handle
, /* close_handle */
122 thread_apc_destroy
/* destroy */
126 /* thread operations */
128 static void dump_thread( struct object
*obj
, int verbose
);
129 static int thread_signaled( struct object
*obj
, struct wait_queue_entry
*entry
);
130 static unsigned int thread_map_access( struct object
*obj
, unsigned int access
);
131 static void thread_poll_event( struct fd
*fd
, int event
);
132 static void destroy_thread( struct object
*obj
);
134 static const struct object_ops thread_ops
=
136 sizeof(struct thread
), /* size */
137 dump_thread
, /* dump */
138 no_get_type
, /* get_type */
139 add_queue
, /* add_queue */
140 remove_queue
, /* remove_queue */
141 thread_signaled
, /* signaled */
142 no_satisfied
, /* satisfied */
143 no_signal
, /* signal */
144 no_get_fd
, /* get_fd */
145 thread_map_access
, /* map_access */
146 default_get_sd
, /* get_sd */
147 default_set_sd
, /* set_sd */
148 no_lookup_name
, /* lookup_name */
149 no_open_file
, /* open_file */
150 no_close_handle
, /* close_handle */
151 destroy_thread
/* destroy */
154 static const struct fd_ops thread_fd_ops
=
156 NULL
, /* get_poll_events */
157 thread_poll_event
, /* poll_event */
159 NULL
, /* get_fd_type */
161 NULL
, /* queue_async */
162 NULL
, /* reselect_async */
163 NULL
/* cancel_async */
166 static struct list thread_list
= LIST_INIT(thread_list
);
168 /* initialize the structure for a newly allocated thread */
169 static inline void init_thread_structure( struct thread
*thread
)
173 thread
->unix_pid
= -1; /* not known yet */
174 thread
->unix_tid
= -1; /* not known yet */
175 thread
->context
= NULL
;
176 thread
->suspend_context
= NULL
;
178 thread
->entry_point
= 0;
179 thread
->debug_ctx
= NULL
;
180 thread
->debug_event
= NULL
;
181 thread
->debug_break
= 0;
182 thread
->queue
= NULL
;
185 thread
->req_data
= NULL
;
186 thread
->req_toread
= 0;
187 thread
->reply_data
= NULL
;
188 thread
->reply_towrite
= 0;
189 thread
->request_fd
= NULL
;
190 thread
->reply_fd
= NULL
;
191 thread
->wait_fd
= NULL
;
192 thread
->state
= RUNNING
;
193 thread
->exit_code
= 0;
194 thread
->priority
= 0;
196 thread
->desktop_users
= 0;
197 thread
->token
= NULL
;
199 thread
->creation_time
= current_time
;
200 thread
->exit_time
= 0;
202 list_init( &thread
->mutex_list
);
203 list_init( &thread
->system_apc
);
204 list_init( &thread
->user_apc
);
206 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
207 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
210 /* check if address looks valid for a client-side data structure (TEB etc.) */
211 static inline int is_valid_address( client_ptr_t addr
)
213 return addr
&& !(addr
% sizeof(int));
216 /* create a new thread */
217 struct thread
*create_thread( int fd
, struct process
*process
)
219 struct thread
*thread
;
221 if (process
->is_terminating
)
224 set_error( STATUS_PROCESS_IS_TERMINATING
);
228 if (!(thread
= alloc_object( &thread_ops
)))
234 init_thread_structure( thread
);
236 thread
->process
= (struct process
*)grab_object( process
);
237 thread
->desktop
= process
->desktop
;
238 thread
->affinity
= process
->affinity
;
239 if (!current
) current
= thread
;
241 list_add_head( &thread_list
, &thread
->entry
);
243 if (!(thread
->id
= alloc_ptid( thread
)))
246 release_object( thread
);
249 if (!(thread
->request_fd
= create_anonymous_fd( &thread_fd_ops
, fd
, &thread
->obj
, 0 )))
251 release_object( thread
);
255 set_fd_events( thread
->request_fd
, POLLIN
); /* start listening to events */
256 add_process_thread( thread
->process
, thread
);
260 /* handle a client event */
261 static void thread_poll_event( struct fd
*fd
, int event
)
263 struct thread
*thread
= get_fd_user( fd
);
264 assert( thread
->obj
.ops
== &thread_ops
);
266 grab_object( thread
);
267 if (event
& (POLLERR
| POLLHUP
)) kill_thread( thread
, 0 );
268 else if (event
& POLLIN
) read_request( thread
);
269 else if (event
& POLLOUT
) write_reply( thread
);
270 release_object( thread
);
273 /* cleanup everything that is no longer needed by a dead thread */
274 /* used by destroy_thread and kill_thread */
275 static void cleanup_thread( struct thread
*thread
)
279 clear_apc_queue( &thread
->system_apc
);
280 clear_apc_queue( &thread
->user_apc
);
281 free( thread
->req_data
);
282 free( thread
->reply_data
);
283 if (thread
->request_fd
) release_object( thread
->request_fd
);
284 if (thread
->reply_fd
) release_object( thread
->reply_fd
);
285 if (thread
->wait_fd
) release_object( thread
->wait_fd
);
286 free( thread
->suspend_context
);
287 cleanup_clipboard_thread(thread
);
288 destroy_thread_windows( thread
);
289 free_msg_queue( thread
);
290 close_thread_desktop( thread
);
291 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
293 if (thread
->inflight
[i
].client
!= -1)
295 close( thread
->inflight
[i
].server
);
296 thread
->inflight
[i
].client
= thread
->inflight
[i
].server
= -1;
299 thread
->req_data
= NULL
;
300 thread
->reply_data
= NULL
;
301 thread
->request_fd
= NULL
;
302 thread
->reply_fd
= NULL
;
303 thread
->wait_fd
= NULL
;
304 thread
->context
= NULL
;
305 thread
->suspend_context
= NULL
;
309 /* destroy a thread when its refcount is 0 */
310 static void destroy_thread( struct object
*obj
)
312 struct thread
*thread
= (struct thread
*)obj
;
313 assert( obj
->ops
== &thread_ops
);
315 assert( !thread
->debug_ctx
); /* cannot still be debugging something */
316 list_remove( &thread
->entry
);
317 cleanup_thread( thread
);
318 release_object( thread
->process
);
319 if (thread
->id
) free_ptid( thread
->id
);
320 if (thread
->token
) release_object( thread
->token
);
323 /* dump a thread on stdout for debugging purposes */
324 static void dump_thread( struct object
*obj
, int verbose
)
326 struct thread
*thread
= (struct thread
*)obj
;
327 assert( obj
->ops
== &thread_ops
);
329 fprintf( stderr
, "Thread id=%04x unix pid=%d unix tid=%d state=%d\n",
330 thread
->id
, thread
->unix_pid
, thread
->unix_tid
, thread
->state
);
333 static int thread_signaled( struct object
*obj
, struct wait_queue_entry
*entry
)
335 struct thread
*mythread
= (struct thread
*)obj
;
336 return (mythread
->state
== TERMINATED
);
339 static unsigned int thread_map_access( struct object
*obj
, unsigned int access
)
341 if (access
& GENERIC_READ
) access
|= STANDARD_RIGHTS_READ
| THREAD_QUERY_INFORMATION
| THREAD_GET_CONTEXT
| THREAD_QUERY_LIMITED_INFORMATION
;
342 if (access
& GENERIC_WRITE
) access
|= STANDARD_RIGHTS_WRITE
| THREAD_SET_INFORMATION
| THREAD_SET_CONTEXT
|
343 THREAD_TERMINATE
| THREAD_SUSPEND_RESUME
| THREAD_SET_LIMITED_INFORMATION
;
344 if (access
& GENERIC_EXECUTE
) access
|= STANDARD_RIGHTS_EXECUTE
| SYNCHRONIZE
| THREAD_QUERY_LIMITED_INFORMATION
;
345 if (access
& GENERIC_ALL
) access
|= THREAD_ALL_ACCESS
;
346 return access
& ~(GENERIC_READ
| GENERIC_WRITE
| GENERIC_EXECUTE
| GENERIC_ALL
);
349 static void dump_thread_apc( struct object
*obj
, int verbose
)
351 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
352 assert( obj
->ops
== &thread_apc_ops
);
354 fprintf( stderr
, "APC owner=%p type=%u\n", apc
->owner
, apc
->call
.type
);
357 static int thread_apc_signaled( struct object
*obj
, struct wait_queue_entry
*entry
)
359 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
360 return apc
->executed
;
363 static void thread_apc_destroy( struct object
*obj
)
365 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
366 if (apc
->caller
) release_object( apc
->caller
);
367 if (apc
->owner
) release_object( apc
->owner
);
370 /* queue an async procedure call */
371 static struct thread_apc
*create_apc( struct object
*owner
, const apc_call_t
*call_data
)
373 struct thread_apc
*apc
;
375 if ((apc
= alloc_object( &thread_apc_ops
)))
377 apc
->call
= *call_data
;
381 apc
->result
.type
= APC_NONE
;
382 if (owner
) grab_object( owner
);
387 /* get a thread pointer from a thread id (and increment the refcount) */
388 struct thread
*get_thread_from_id( thread_id_t id
)
390 struct object
*obj
= get_ptid_entry( id
);
392 if (obj
&& obj
->ops
== &thread_ops
) return (struct thread
*)grab_object( obj
);
393 set_error( STATUS_INVALID_CID
);
397 /* get a thread from a handle (and increment the refcount) */
398 struct thread
*get_thread_from_handle( obj_handle_t handle
, unsigned int access
)
400 return (struct thread
*)get_handle_obj( current
->process
, handle
,
401 access
, &thread_ops
);
404 /* find a thread from a Unix tid */
405 struct thread
*get_thread_from_tid( int tid
)
407 struct thread
*thread
;
409 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
411 if (thread
->unix_tid
== tid
) return thread
;
416 /* find a thread from a Unix pid */
417 struct thread
*get_thread_from_pid( int pid
)
419 struct thread
*thread
;
421 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
423 if (thread
->unix_pid
== pid
) return thread
;
428 int set_thread_affinity( struct thread
*thread
, affinity_t affinity
)
431 #ifdef HAVE_SCHED_SETAFFINITY
432 if (thread
->unix_tid
!= -1)
439 for (i
= 0, mask
= 1; mask
; i
++, mask
<<= 1)
440 if (affinity
& mask
) CPU_SET( i
, &set
);
442 ret
= sched_setaffinity( thread
->unix_tid
, sizeof(set
), &set
);
445 if (!ret
) thread
->affinity
= affinity
;
449 affinity_t
get_thread_affinity( struct thread
*thread
)
452 #ifdef HAVE_SCHED_SETAFFINITY
453 if (thread
->unix_tid
!= -1)
458 if (!sched_getaffinity( thread
->unix_tid
, sizeof(set
), &set
))
459 for (i
= 0; i
< 8 * sizeof(mask
); i
++)
460 if (CPU_ISSET( i
, &set
)) mask
|= (affinity_t
)1 << i
;
463 if (!mask
) mask
= ~(affinity_t
)0;
467 #define THREAD_PRIORITY_REALTIME_HIGHEST 6
468 #define THREAD_PRIORITY_REALTIME_LOWEST -7
470 /* set all information about a thread */
471 static void set_thread_info( struct thread
*thread
,
472 const struct set_thread_info_request
*req
)
474 if (req
->mask
& SET_THREAD_INFO_PRIORITY
)
476 int max
= THREAD_PRIORITY_HIGHEST
;
477 int min
= THREAD_PRIORITY_LOWEST
;
478 if (thread
->process
->priority
== PROCESS_PRIOCLASS_REALTIME
)
480 max
= THREAD_PRIORITY_REALTIME_HIGHEST
;
481 min
= THREAD_PRIORITY_REALTIME_LOWEST
;
483 if ((req
->priority
>= min
&& req
->priority
<= max
) ||
484 req
->priority
== THREAD_PRIORITY_IDLE
||
485 req
->priority
== THREAD_PRIORITY_TIME_CRITICAL
)
486 thread
->priority
= req
->priority
;
488 set_error( STATUS_INVALID_PARAMETER
);
490 if (req
->mask
& SET_THREAD_INFO_AFFINITY
)
492 if ((req
->affinity
& thread
->process
->affinity
) != req
->affinity
)
493 set_error( STATUS_INVALID_PARAMETER
);
494 else if (thread
->state
== TERMINATED
)
495 set_error( STATUS_THREAD_IS_TERMINATING
);
496 else if (set_thread_affinity( thread
, req
->affinity
))
499 if (req
->mask
& SET_THREAD_INFO_TOKEN
)
500 security_set_thread_token( thread
, req
->token
);
501 if (req
->mask
& SET_THREAD_INFO_ENTRYPOINT
)
502 thread
->entry_point
= req
->entry_point
;
505 /* stop a thread (at the Unix level) */
506 void stop_thread( struct thread
*thread
)
508 if (thread
->context
) return; /* already inside a debug event, no need for a signal */
509 /* can't stop a thread while initialisation is in progress */
510 if (is_process_init_done(thread
->process
)) send_thread_signal( thread
, SIGUSR1
);
513 /* stop a thread if it's supposed to be suspended */
514 void stop_thread_if_suspended( struct thread
*thread
)
516 if (thread
->suspend
+ thread
->process
->suspend
> 0) stop_thread( thread
);
519 /* suspend a thread */
520 static int suspend_thread( struct thread
*thread
)
522 int old_count
= thread
->suspend
;
523 if (thread
->suspend
< MAXIMUM_SUSPEND_COUNT
)
525 if (!(thread
->process
->suspend
+ thread
->suspend
++)) stop_thread( thread
);
527 else set_error( STATUS_SUSPEND_COUNT_EXCEEDED
);
531 /* resume a thread */
532 static int resume_thread( struct thread
*thread
)
534 int old_count
= thread
->suspend
;
535 if (thread
->suspend
> 0)
537 if (!(--thread
->suspend
+ thread
->process
->suspend
)) wake_thread( thread
);
542 /* add a thread to an object wait queue; return 1 if OK, 0 on error */
543 int add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
547 list_add_tail( &obj
->wait_queue
, &entry
->entry
);
551 /* remove a thread from an object wait queue */
552 void remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
554 list_remove( &entry
->entry
);
555 release_object( obj
);
558 struct thread
*get_wait_queue_thread( struct wait_queue_entry
*entry
)
560 return entry
->wait
->thread
;
563 enum select_op
get_wait_queue_select_op( struct wait_queue_entry
*entry
)
565 return entry
->wait
->select
;
568 client_ptr_t
get_wait_queue_key( struct wait_queue_entry
*entry
)
570 return entry
->wait
->key
;
573 void make_wait_abandoned( struct wait_queue_entry
*entry
)
575 entry
->wait
->abandoned
= 1;
579 static void end_wait( struct thread
*thread
)
581 struct thread_wait
*wait
= thread
->wait
;
582 struct wait_queue_entry
*entry
;
586 thread
->wait
= wait
->next
;
587 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
588 entry
->obj
->ops
->remove_queue( entry
->obj
, entry
);
589 if (wait
->user
) remove_timeout_user( wait
->user
);
593 /* build the thread wait structure */
594 static int wait_on( const select_op_t
*select_op
, unsigned int count
, struct object
*objects
[],
595 int flags
, timeout_t timeout
)
597 struct thread_wait
*wait
;
598 struct wait_queue_entry
*entry
;
601 if (!(wait
= mem_alloc( FIELD_OFFSET(struct thread_wait
, queues
[count
]) ))) return 0;
602 wait
->next
= current
->wait
;
603 wait
->thread
= current
;
606 wait
->select
= select_op
->op
;
609 wait
->timeout
= timeout
;
611 current
->wait
= wait
;
613 for (i
= 0, entry
= wait
->queues
; i
< count
; i
++, entry
++)
615 struct object
*obj
= objects
[i
];
617 if (!obj
->ops
->add_queue( obj
, entry
))
627 static int wait_on_handles( const select_op_t
*select_op
, unsigned int count
, const obj_handle_t
*handles
,
628 int flags
, timeout_t timeout
)
630 struct object
*objects
[MAXIMUM_WAIT_OBJECTS
];
634 assert( count
<= MAXIMUM_WAIT_OBJECTS
);
636 for (i
= 0; i
< count
; i
++)
637 if (!(objects
[i
] = get_handle_obj( current
->process
, handles
[i
], SYNCHRONIZE
, NULL
)))
640 if (i
== count
) ret
= wait_on( select_op
, count
, objects
, flags
, timeout
);
642 while (i
> 0) release_object( objects
[--i
] );
646 /* check if the thread waiting condition is satisfied */
647 static int check_wait( struct thread
*thread
)
650 struct thread_wait
*wait
= thread
->wait
;
651 struct wait_queue_entry
*entry
;
655 if ((wait
->flags
& SELECT_INTERRUPTIBLE
) && !list_empty( &thread
->system_apc
))
656 return STATUS_USER_APC
;
658 /* Suspended threads may not acquire locks, but they can run system APCs */
659 if (thread
->process
->suspend
+ thread
->suspend
> 0) return -1;
661 if (wait
->select
== SELECT_WAIT_ALL
)
664 /* Note: we must check them all anyway, as some objects may
665 * want to do something when signaled, even if others are not */
666 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
667 not_ok
|= !entry
->obj
->ops
->signaled( entry
->obj
, entry
);
668 if (not_ok
) goto other_checks
;
669 /* Wait satisfied: tell it to all objects */
670 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
671 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
672 return wait
->abandoned
? STATUS_ABANDONED_WAIT_0
: STATUS_WAIT_0
;
676 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
678 if (!entry
->obj
->ops
->signaled( entry
->obj
, entry
)) continue;
679 /* Wait satisfied: tell it to the object */
680 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
681 if (wait
->abandoned
) i
+= STATUS_ABANDONED_WAIT_0
;
687 if ((wait
->flags
& SELECT_ALERTABLE
) && !list_empty(&thread
->user_apc
)) return STATUS_USER_APC
;
688 if (wait
->timeout
<= current_time
) return STATUS_TIMEOUT
;
692 /* send the wakeup signal to a thread */
693 static int send_thread_wakeup( struct thread
*thread
, client_ptr_t cookie
, int signaled
)
695 struct wake_up_reply reply
;
698 memset( &reply
, 0, sizeof(reply
) );
699 reply
.cookie
= cookie
;
700 reply
.signaled
= signaled
;
701 if ((ret
= write( get_unix_fd( thread
->wait_fd
), &reply
, sizeof(reply
) )) == sizeof(reply
))
704 fatal_protocol_error( thread
, "partial wakeup write %d\n", ret
);
705 else if (errno
== EPIPE
)
706 kill_thread( thread
, 0 ); /* normal death */
708 fatal_protocol_error( thread
, "write: %s\n", strerror( errno
));
712 /* attempt to wake up a thread */
713 /* return >0 if OK, 0 if the wait condition is still not satisfied and -1 on error */
714 int wake_thread( struct thread
*thread
)
719 for (count
= 0; thread
->wait
; count
++)
721 if ((signaled
= check_wait( thread
)) == -1) break;
723 cookie
= thread
->wait
->cookie
;
724 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d\n", thread
->id
, signaled
);
726 if (cookie
&& send_thread_wakeup( thread
, cookie
, signaled
) == -1) /* error */
728 if (!count
) count
= -1;
735 /* attempt to wake up a thread from a wait queue entry, assuming that it is signaled */
736 int wake_thread_queue_entry( struct wait_queue_entry
*entry
)
738 struct thread_wait
*wait
= entry
->wait
;
739 struct thread
*thread
= wait
->thread
;
743 if (thread
->wait
!= wait
) return 0; /* not the current wait */
744 if (thread
->process
->suspend
+ thread
->suspend
> 0) return 0; /* cannot acquire locks */
746 assert( wait
->select
!= SELECT_WAIT_ALL
);
748 signaled
= entry
- wait
->queues
;
749 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
750 if (wait
->abandoned
) signaled
+= STATUS_ABANDONED_WAIT_0
;
752 cookie
= wait
->cookie
;
753 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d\n", thread
->id
, signaled
);
756 if (!cookie
|| send_thread_wakeup( thread
, cookie
, signaled
) != -1)
757 wake_thread( thread
); /* check other waits too */
762 /* thread wait timeout */
763 static void thread_timeout( void *ptr
)
765 struct thread_wait
*wait
= ptr
;
766 struct thread
*thread
= wait
->thread
;
767 client_ptr_t cookie
= wait
->cookie
;
770 if (thread
->wait
!= wait
) return; /* not the top-level wait, ignore it */
771 if (thread
->suspend
+ thread
->process
->suspend
> 0) return; /* suspended, ignore it */
773 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=TIMEOUT\n", thread
->id
);
777 if (send_thread_wakeup( thread
, cookie
, STATUS_TIMEOUT
) == -1) return;
778 /* check if other objects have become signaled in the meantime */
779 wake_thread( thread
);
782 /* try signaling an event flag, a semaphore or a mutex */
783 static int signal_object( obj_handle_t handle
)
788 obj
= get_handle_obj( current
->process
, handle
, 0, NULL
);
791 ret
= obj
->ops
->signal( obj
, get_handle_access( current
->process
, handle
));
792 release_object( obj
);
797 /* select on a list of handles */
798 static timeout_t
select_on( const select_op_t
*select_op
, data_size_t op_size
, client_ptr_t cookie
,
799 int flags
, timeout_t timeout
)
803 struct object
*object
;
805 if (timeout
<= 0) timeout
= current_time
- timeout
;
807 switch (select_op
->op
)
810 if (!wait_on( select_op
, 0, NULL
, flags
, timeout
)) return timeout
;
814 case SELECT_WAIT_ALL
:
815 count
= (op_size
- offsetof( select_op_t
, wait
.handles
)) / sizeof(select_op
->wait
.handles
[0]);
816 if (op_size
< offsetof( select_op_t
, wait
.handles
) || count
> MAXIMUM_WAIT_OBJECTS
)
818 set_error( STATUS_INVALID_PARAMETER
);
821 if (!wait_on_handles( select_op
, count
, select_op
->wait
.handles
, flags
, timeout
))
825 case SELECT_SIGNAL_AND_WAIT
:
826 if (!wait_on_handles( select_op
, 1, &select_op
->signal_and_wait
.wait
, flags
, timeout
))
828 if (select_op
->signal_and_wait
.signal
)
830 if (!signal_object( select_op
->signal_and_wait
.signal
))
835 /* check if we woke ourselves up */
836 if (!current
->wait
) return timeout
;
840 case SELECT_KEYED_EVENT_WAIT
:
841 case SELECT_KEYED_EVENT_RELEASE
:
842 object
= (struct object
*)get_keyed_event_obj( current
->process
, select_op
->keyed_event
.handle
,
843 select_op
->op
== SELECT_KEYED_EVENT_WAIT
? KEYEDEVENT_WAIT
: KEYEDEVENT_WAKE
);
844 if (!object
) return timeout
;
845 ret
= wait_on( select_op
, 1, &object
, flags
, timeout
);
846 release_object( object
);
847 if (!ret
) return timeout
;
848 current
->wait
->key
= select_op
->keyed_event
.key
;
852 set_error( STATUS_INVALID_PARAMETER
);
856 if ((ret
= check_wait( current
)) != -1)
858 /* condition is already satisfied */
864 /* now we need to wait */
865 if (current
->wait
->timeout
!= TIMEOUT_INFINITE
)
867 if (!(current
->wait
->user
= add_timeout_user( current
->wait
->timeout
,
868 thread_timeout
, current
->wait
)))
874 current
->wait
->cookie
= cookie
;
875 set_error( STATUS_PENDING
);
879 /* attempt to wake threads sleeping on the object wait queue */
880 void wake_up( struct object
*obj
, int max
)
885 LIST_FOR_EACH( ptr
, &obj
->wait_queue
)
887 struct wait_queue_entry
*entry
= LIST_ENTRY( ptr
, struct wait_queue_entry
, entry
);
888 if (!(ret
= wake_thread( get_wait_queue_thread( entry
)))) continue;
889 if (ret
> 0 && max
&& !--max
) break;
890 /* restart at the head of the list since a wake up can change the object wait queue */
891 ptr
= &obj
->wait_queue
;
895 /* return the apc queue to use for a given apc type */
896 static inline struct list
*get_apc_queue( struct thread
*thread
, enum apc_type type
)
903 return &thread
->user_apc
;
905 return &thread
->system_apc
;
909 /* check if thread is currently waiting for a (system) apc */
910 static inline int is_in_apc_wait( struct thread
*thread
)
912 return (thread
->process
->suspend
|| thread
->suspend
||
913 (thread
->wait
&& (thread
->wait
->flags
& SELECT_INTERRUPTIBLE
)));
916 /* queue an existing APC to a given thread */
917 static int queue_apc( struct process
*process
, struct thread
*thread
, struct thread_apc
*apc
)
921 if (!thread
) /* find a suitable thread inside the process */
923 struct thread
*candidate
;
925 /* first try to find a waiting thread */
926 LIST_FOR_EACH_ENTRY( candidate
, &process
->thread_list
, struct thread
, proc_entry
)
928 if (candidate
->state
== TERMINATED
) continue;
929 if (is_in_apc_wait( candidate
))
937 /* then use the first one that accepts a signal */
938 LIST_FOR_EACH_ENTRY( candidate
, &process
->thread_list
, struct thread
, proc_entry
)
940 if (send_thread_signal( candidate
, SIGUSR1
))
947 if (!thread
) return 0; /* nothing found */
948 queue
= get_apc_queue( thread
, apc
->call
.type
);
952 if (thread
->state
== TERMINATED
) return 0;
953 queue
= get_apc_queue( thread
, apc
->call
.type
);
954 /* send signal for system APCs if needed */
955 if (queue
== &thread
->system_apc
&& list_empty( queue
) && !is_in_apc_wait( thread
))
957 if (!send_thread_signal( thread
, SIGUSR1
)) return 0;
959 /* cancel a possible previous APC with the same owner */
960 if (apc
->owner
) thread_cancel_apc( thread
, apc
->owner
, apc
->call
.type
);
964 list_add_tail( queue
, &apc
->entry
);
965 if (!list_prev( queue
, &apc
->entry
)) /* first one */
966 wake_thread( thread
);
971 /* queue an async procedure call */
972 int thread_queue_apc( struct thread
*thread
, struct object
*owner
, const apc_call_t
*call_data
)
974 struct thread_apc
*apc
;
977 if ((apc
= create_apc( owner
, call_data
)))
979 ret
= queue_apc( NULL
, thread
, apc
);
980 release_object( apc
);
985 /* cancel the async procedure call owned by a specific object */
986 void thread_cancel_apc( struct thread
*thread
, struct object
*owner
, enum apc_type type
)
988 struct thread_apc
*apc
;
989 struct list
*queue
= get_apc_queue( thread
, type
);
991 LIST_FOR_EACH_ENTRY( apc
, queue
, struct thread_apc
, entry
)
993 if (apc
->owner
!= owner
) continue;
994 list_remove( &apc
->entry
);
996 wake_up( &apc
->obj
, 0 );
997 release_object( apc
);
1002 /* remove the head apc from the queue; the returned object must be released by the caller */
1003 static struct thread_apc
*thread_dequeue_apc( struct thread
*thread
, int system_only
)
1005 struct thread_apc
*apc
= NULL
;
1006 struct list
*ptr
= list_head( &thread
->system_apc
);
1008 if (!ptr
&& !system_only
) ptr
= list_head( &thread
->user_apc
);
1011 apc
= LIST_ENTRY( ptr
, struct thread_apc
, entry
);
1017 /* clear an APC queue, cancelling all the APCs on it */
1018 static void clear_apc_queue( struct list
*queue
)
1022 while ((ptr
= list_head( queue
)))
1024 struct thread_apc
*apc
= LIST_ENTRY( ptr
, struct thread_apc
, entry
);
1025 list_remove( &apc
->entry
);
1027 wake_up( &apc
->obj
, 0 );
1028 release_object( apc
);
1032 /* add an fd to the inflight list */
1033 /* return list index, or -1 on error */
1034 int thread_add_inflight_fd( struct thread
*thread
, int client
, int server
)
1038 if (server
== -1) return -1;
1045 /* first check if we already have an entry for this fd */
1046 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1047 if (thread
->inflight
[i
].client
== client
)
1049 close( thread
->inflight
[i
].server
);
1050 thread
->inflight
[i
].server
= server
;
1054 /* now find a free spot to store it */
1055 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1056 if (thread
->inflight
[i
].client
== -1)
1058 thread
->inflight
[i
].client
= client
;
1059 thread
->inflight
[i
].server
= server
;
1067 /* get an inflight fd and purge it from the list */
1068 /* the fd must be closed when no longer used */
1069 int thread_get_inflight_fd( struct thread
*thread
, int client
)
1073 if (client
== -1) return -1;
1077 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1079 if (thread
->inflight
[i
].client
== client
)
1081 ret
= thread
->inflight
[i
].server
;
1082 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
1086 } while (!receive_fd( thread
->process
)); /* in case it is still in the socket buffer */
1090 /* kill a thread on the spot */
1091 void kill_thread( struct thread
*thread
, int violent_death
)
1093 if (thread
->state
== TERMINATED
) return; /* already killed */
1094 thread
->state
= TERMINATED
;
1095 thread
->exit_time
= current_time
;
1096 if (current
== thread
) current
= NULL
;
1098 fprintf( stderr
,"%04x: *killed* exit_code=%d\n",
1099 thread
->id
, thread
->exit_code
);
1102 while (thread
->wait
) end_wait( thread
);
1103 send_thread_wakeup( thread
, 0, thread
->exit_code
);
1104 /* if it is waiting on the socket, we don't need to send a SIGQUIT */
1107 kill_console_processes( thread
, 0 );
1108 debug_exit_thread( thread
);
1109 abandon_mutexes( thread
);
1110 wake_up( &thread
->obj
, 0 );
1111 if (violent_death
) send_thread_signal( thread
, SIGQUIT
);
1112 cleanup_thread( thread
);
1113 remove_process_thread( thread
->process
, thread
);
1114 release_object( thread
);
1117 /* copy parts of a context structure */
1118 static void copy_context( context_t
*to
, const context_t
*from
, unsigned int flags
)
1120 assert( to
->cpu
== from
->cpu
);
1122 if (flags
& SERVER_CTX_CONTROL
) to
->ctl
= from
->ctl
;
1123 if (flags
& SERVER_CTX_INTEGER
) to
->integer
= from
->integer
;
1124 if (flags
& SERVER_CTX_SEGMENTS
) to
->seg
= from
->seg
;
1125 if (flags
& SERVER_CTX_FLOATING_POINT
) to
->fp
= from
->fp
;
1126 if (flags
& SERVER_CTX_DEBUG_REGISTERS
) to
->debug
= from
->debug
;
1127 if (flags
& SERVER_CTX_EXTENDED_REGISTERS
) to
->ext
= from
->ext
;
1130 /* return the context flags that correspond to system regs */
1131 /* (system regs are the ones we can't access on the client side) */
1132 static unsigned int get_context_system_regs( enum cpu_type cpu
)
1136 case CPU_x86
: return SERVER_CTX_DEBUG_REGISTERS
;
1137 case CPU_x86_64
: return SERVER_CTX_DEBUG_REGISTERS
;
1138 case CPU_POWERPC
: return 0;
1139 case CPU_ARM
: return 0;
1140 case CPU_ARM64
: return 0;
1145 /* trigger a breakpoint event in a given thread */
1146 void break_thread( struct thread
*thread
)
1150 assert( thread
->context
);
1152 memset( &data
, 0, sizeof(data
) );
1153 data
.exception
.first
= 1;
1154 data
.exception
.exc_code
= STATUS_BREAKPOINT
;
1155 data
.exception
.flags
= EXCEPTION_CONTINUABLE
;
1156 switch (thread
->context
->cpu
)
1159 data
.exception
.address
= thread
->context
->ctl
.i386_regs
.eip
;
1162 data
.exception
.address
= thread
->context
->ctl
.x86_64_regs
.rip
;
1165 data
.exception
.address
= thread
->context
->ctl
.powerpc_regs
.iar
;
1168 data
.exception
.address
= thread
->context
->ctl
.arm_regs
.pc
;
1171 data
.exception
.address
= thread
->context
->ctl
.arm64_regs
.pc
;
1174 generate_debug_event( thread
, EXCEPTION_DEBUG_EVENT
, &data
);
1175 thread
->debug_break
= 0;
1178 /* take a snapshot of currently running threads */
1179 struct thread_snapshot
*thread_snap( int *count
)
1181 struct thread_snapshot
*snapshot
, *ptr
;
1182 struct thread
*thread
;
1185 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
1186 if (thread
->state
!= TERMINATED
) total
++;
1187 if (!total
|| !(snapshot
= mem_alloc( sizeof(*snapshot
) * total
))) return NULL
;
1189 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
1191 if (thread
->state
== TERMINATED
) continue;
1192 ptr
->thread
= thread
;
1193 ptr
->count
= thread
->obj
.refcount
;
1194 ptr
->priority
= thread
->priority
;
1195 grab_object( thread
);
1202 /* gets the current impersonation token */
1203 struct token
*thread_get_impersonation_token( struct thread
*thread
)
1206 return thread
->token
;
1208 return thread
->process
->token
;
1211 /* check if a cpu type can be supported on this server */
1212 int is_cpu_supported( enum cpu_type cpu
)
1214 unsigned int prefix_cpu_mask
= get_prefix_cpu_mask();
1216 if (CPU_FLAG(cpu
) && (supported_cpus
& prefix_cpu_mask
& CPU_FLAG(cpu
))) return 1;
1217 if (!(supported_cpus
& prefix_cpu_mask
))
1218 set_error( STATUS_NOT_SUPPORTED
);
1219 else if (supported_cpus
& CPU_FLAG(cpu
))
1220 set_error( STATUS_INVALID_IMAGE_WIN_64
); /* server supports it but not the prefix */
1222 set_error( STATUS_INVALID_IMAGE_FORMAT
);
1226 /* create a new thread */
1227 DECL_HANDLER(new_thread
)
1229 struct thread
*thread
;
1230 int request_fd
= thread_get_inflight_fd( current
, req
->request_fd
);
1232 if (request_fd
== -1 || fcntl( request_fd
, F_SETFL
, O_NONBLOCK
) == -1)
1234 if (request_fd
!= -1) close( request_fd
);
1235 set_error( STATUS_INVALID_HANDLE
);
1239 if ((thread
= create_thread( request_fd
, current
->process
)))
1241 if (req
->suspend
) thread
->suspend
++;
1242 reply
->tid
= get_thread_id( thread
);
1243 if ((reply
->handle
= alloc_handle( current
->process
, thread
, req
->access
, req
->attributes
)))
1245 /* thread object will be released when the thread gets killed */
1248 kill_thread( thread
, 1 );
1252 /* initialize a new thread */
1253 DECL_HANDLER(init_thread
)
1255 struct process
*process
= current
->process
;
1256 int wait_fd
, reply_fd
;
1258 if ((reply_fd
= thread_get_inflight_fd( current
, req
->reply_fd
)) == -1)
1260 set_error( STATUS_TOO_MANY_OPENED_FILES
);
1263 if ((wait_fd
= thread_get_inflight_fd( current
, req
->wait_fd
)) == -1)
1265 set_error( STATUS_TOO_MANY_OPENED_FILES
);
1269 if (current
->reply_fd
) /* already initialised */
1271 set_error( STATUS_INVALID_PARAMETER
);
1275 if (fcntl( reply_fd
, F_SETFL
, O_NONBLOCK
) == -1) goto error
;
1277 current
->reply_fd
= create_anonymous_fd( &thread_fd_ops
, reply_fd
, ¤t
->obj
, 0 );
1278 current
->wait_fd
= create_anonymous_fd( &thread_fd_ops
, wait_fd
, ¤t
->obj
, 0 );
1279 if (!current
->reply_fd
|| !current
->wait_fd
) return;
1281 if (!is_valid_address(req
->teb
))
1283 set_error( STATUS_INVALID_PARAMETER
);
1287 current
->unix_pid
= req
->unix_pid
;
1288 current
->unix_tid
= req
->unix_tid
;
1289 current
->teb
= req
->teb
;
1290 current
->entry_point
= process
->peb
? req
->entry
: 0;
1292 if (!process
->peb
) /* first thread, initialize the process too */
1294 if (!is_cpu_supported( req
->cpu
)) return;
1295 process
->unix_pid
= current
->unix_pid
;
1296 process
->peb
= req
->entry
;
1297 process
->cpu
= req
->cpu
;
1298 reply
->info_size
= init_process( current
);
1299 if (!process
->parent
)
1300 process
->affinity
= current
->affinity
= get_thread_affinity( current
);
1302 set_thread_affinity( current
, current
->affinity
);
1306 if (req
->cpu
!= process
->cpu
)
1308 set_error( STATUS_INVALID_PARAMETER
);
1311 if (process
->unix_pid
!= current
->unix_pid
)
1312 process
->unix_pid
= -1; /* can happen with linuxthreads */
1313 stop_thread_if_suspended( current
);
1314 generate_debug_event( current
, CREATE_THREAD_DEBUG_EVENT
, &req
->entry
);
1315 set_thread_affinity( current
, current
->affinity
);
1317 debug_level
= max( debug_level
, req
->debug_level
);
1319 reply
->pid
= get_process_id( process
);
1320 reply
->tid
= get_thread_id( current
);
1321 reply
->version
= SERVER_PROTOCOL_VERSION
;
1322 reply
->server_start
= server_start_time
;
1323 reply
->all_cpus
= supported_cpus
& get_prefix_cpu_mask();
1327 if (reply_fd
!= -1) close( reply_fd
);
1328 if (wait_fd
!= -1) close( wait_fd
);
1331 /* terminate a thread */
1332 DECL_HANDLER(terminate_thread
)
1334 struct thread
*thread
;
1338 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_TERMINATE
)))
1340 thread
->exit_code
= req
->exit_code
;
1341 if (thread
!= current
) kill_thread( thread
, 1 );
1345 reply
->last
= (thread
->process
->running_threads
== 1);
1347 release_object( thread
);
1351 /* open a handle to a thread */
1352 DECL_HANDLER(open_thread
)
1354 struct thread
*thread
= get_thread_from_id( req
->tid
);
1359 reply
->handle
= alloc_handle( current
->process
, thread
, req
->access
, req
->attributes
);
1360 release_object( thread
);
1364 /* fetch information about a thread */
1365 DECL_HANDLER(get_thread_info
)
1367 struct thread
*thread
;
1368 obj_handle_t handle
= req
->handle
;
1370 if (!handle
) thread
= get_thread_from_id( req
->tid_in
);
1371 else thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
);
1375 reply
->pid
= get_process_id( thread
->process
);
1376 reply
->tid
= get_thread_id( thread
);
1377 reply
->teb
= thread
->teb
;
1378 reply
->entry_point
= thread
->entry_point
;
1379 reply
->exit_code
= (thread
->state
== TERMINATED
) ? thread
->exit_code
: STATUS_PENDING
;
1380 reply
->priority
= thread
->priority
;
1381 reply
->affinity
= thread
->affinity
;
1382 reply
->last
= thread
->process
->running_threads
== 1;
1384 release_object( thread
);
1388 /* fetch information about thread times */
1389 DECL_HANDLER(get_thread_times
)
1391 struct thread
*thread
;
1393 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
)))
1395 reply
->creation_time
= thread
->creation_time
;
1396 reply
->exit_time
= thread
->exit_time
;
1398 release_object( thread
);
1402 /* set information about a thread */
1403 DECL_HANDLER(set_thread_info
)
1405 struct thread
*thread
;
1407 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SET_INFORMATION
)))
1409 set_thread_info( thread
, req
);
1410 release_object( thread
);
1414 /* suspend a thread */
1415 DECL_HANDLER(suspend_thread
)
1417 struct thread
*thread
;
1419 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
1421 if (thread
->state
== TERMINATED
) set_error( STATUS_ACCESS_DENIED
);
1422 else reply
->count
= suspend_thread( thread
);
1423 release_object( thread
);
1427 /* resume a thread */
1428 DECL_HANDLER(resume_thread
)
1430 struct thread
*thread
;
1432 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
1434 reply
->count
= resume_thread( thread
);
1435 release_object( thread
);
1439 /* select on a handle list */
1440 DECL_HANDLER(select
)
1442 select_op_t select_op
;
1443 data_size_t op_size
;
1444 struct thread_apc
*apc
;
1445 const apc_result_t
*result
= get_req_data();
1447 if (get_req_data_size() < sizeof(*result
))
1449 set_error( STATUS_INVALID_PARAMETER
);
1454 set_error( STATUS_INVALID_PARAMETER
);
1458 op_size
= min( get_req_data_size() - sizeof(*result
), sizeof(select_op
) );
1459 memset( &select_op
, 0, sizeof(select_op
) );
1460 memcpy( &select_op
, result
+ 1, op_size
);
1462 /* first store results of previous apc */
1465 if (!(apc
= (struct thread_apc
*)get_handle_obj( current
->process
, req
->prev_apc
,
1466 0, &thread_apc_ops
))) return;
1467 apc
->result
= *result
;
1469 if (apc
->result
.type
== APC_CREATE_THREAD
) /* transfer the handle to the caller process */
1471 obj_handle_t handle
= duplicate_handle( current
->process
, apc
->result
.create_thread
.handle
,
1472 apc
->caller
->process
, 0, 0, DUP_HANDLE_SAME_ACCESS
);
1473 close_handle( current
->process
, apc
->result
.create_thread
.handle
);
1474 apc
->result
.create_thread
.handle
= handle
;
1475 clear_error(); /* ignore errors from the above calls */
1477 else if (apc
->result
.type
== APC_ASYNC_IO
)
1480 async_set_result( apc
->owner
, apc
->result
.async_io
.status
, apc
->result
.async_io
.total
,
1481 apc
->result
.async_io
.apc
, apc
->result
.async_io
.arg
);
1483 wake_up( &apc
->obj
, 0 );
1484 close_handle( current
->process
, req
->prev_apc
);
1485 release_object( apc
);
1488 reply
->timeout
= select_on( &select_op
, op_size
, req
->cookie
, req
->flags
, req
->timeout
);
1490 if (get_error() == STATUS_USER_APC
)
1494 if (!(apc
= thread_dequeue_apc( current
, !(req
->flags
& SELECT_ALERTABLE
) )))
1496 /* Optimization: ignore APC_NONE calls, they are only used to
1497 * wake up a thread, but since we got here the thread woke up already.
1499 if (apc
->call
.type
!= APC_NONE
)
1501 if ((reply
->apc_handle
= alloc_handle( current
->process
, apc
, SYNCHRONIZE
, 0 )))
1502 reply
->call
= apc
->call
;
1503 release_object( apc
);
1507 wake_up( &apc
->obj
, 0 );
1508 release_object( apc
);
1513 /* queue an APC for a thread or process */
1514 DECL_HANDLER(queue_apc
)
1516 struct thread
*thread
= NULL
;
1517 struct process
*process
= NULL
;
1518 struct thread_apc
*apc
;
1520 if (!(apc
= create_apc( NULL
, &req
->call
))) return;
1522 switch (apc
->call
.type
)
1526 thread
= get_thread_from_handle( req
->handle
, THREAD_SET_CONTEXT
);
1528 case APC_VIRTUAL_ALLOC
:
1529 case APC_VIRTUAL_FREE
:
1530 case APC_VIRTUAL_PROTECT
:
1531 case APC_VIRTUAL_FLUSH
:
1532 case APC_VIRTUAL_LOCK
:
1533 case APC_VIRTUAL_UNLOCK
:
1534 case APC_UNMAP_VIEW
:
1535 process
= get_process_from_handle( req
->handle
, PROCESS_VM_OPERATION
);
1537 case APC_VIRTUAL_QUERY
:
1538 process
= get_process_from_handle( req
->handle
, PROCESS_QUERY_INFORMATION
);
1541 process
= get_process_from_handle( req
->handle
, PROCESS_VM_OPERATION
);
1542 if (process
&& process
!= current
->process
)
1544 /* duplicate the handle into the target process */
1545 obj_handle_t handle
= duplicate_handle( current
->process
, apc
->call
.map_view
.handle
,
1546 process
, 0, 0, DUP_HANDLE_SAME_ACCESS
);
1547 if (handle
) apc
->call
.map_view
.handle
= handle
;
1550 release_object( process
);
1555 case APC_CREATE_THREAD
:
1556 process
= get_process_from_handle( req
->handle
, PROCESS_CREATE_THREAD
);
1559 set_error( STATUS_INVALID_PARAMETER
);
1565 if (!queue_apc( NULL
, thread
, apc
)) set_error( STATUS_THREAD_IS_TERMINATING
);
1566 release_object( thread
);
1570 reply
->self
= (process
== current
->process
);
1573 obj_handle_t handle
= alloc_handle( current
->process
, apc
, SYNCHRONIZE
, 0 );
1576 if (queue_apc( process
, NULL
, apc
))
1578 apc
->caller
= (struct thread
*)grab_object( current
);
1579 reply
->handle
= handle
;
1583 close_handle( current
->process
, handle
);
1584 set_error( STATUS_PROCESS_IS_TERMINATING
);
1588 release_object( process
);
1591 release_object( apc
);
1594 /* Get the result of an APC call */
1595 DECL_HANDLER(get_apc_result
)
1597 struct thread_apc
*apc
;
1599 if (!(apc
= (struct thread_apc
*)get_handle_obj( current
->process
, req
->handle
,
1600 0, &thread_apc_ops
))) return;
1601 if (!apc
->executed
) set_error( STATUS_PENDING
);
1604 reply
->result
= apc
->result
;
1605 /* close the handle directly to avoid an extra round-trip */
1606 close_handle( current
->process
, req
->handle
);
1608 release_object( apc
);
1611 /* retrieve the current context of a thread */
1612 DECL_HANDLER(get_thread_context
)
1614 struct thread
*thread
;
1617 if (get_reply_max_size() < sizeof(context_t
))
1619 set_error( STATUS_INVALID_PARAMETER
);
1622 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_GET_CONTEXT
))) return;
1623 reply
->self
= (thread
== current
);
1625 if (thread
!= current
&& !thread
->context
)
1627 /* thread is not suspended, retry (if it's still running) */
1628 if (thread
->state
== RUNNING
)
1630 set_error( STATUS_PENDING
);
1633 release_object( thread
);
1634 /* make sure we have suspend access */
1635 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
))) return;
1636 suspend_thread( thread
);
1639 else set_error( STATUS_UNSUCCESSFUL
);
1641 else if ((context
= set_reply_data_size( sizeof(context_t
) )))
1643 unsigned int flags
= get_context_system_regs( thread
->process
->cpu
);
1645 memset( context
, 0, sizeof(context_t
) );
1646 context
->cpu
= thread
->process
->cpu
;
1647 if (thread
->context
) copy_context( context
, thread
->context
, req
->flags
& ~flags
);
1648 if (flags
) get_thread_context( thread
, context
, flags
);
1650 release_object( thread
);
1653 /* set the current context of a thread */
1654 DECL_HANDLER(set_thread_context
)
1656 struct thread
*thread
;
1657 const context_t
*context
= get_req_data();
1659 if (get_req_data_size() < sizeof(context_t
))
1661 set_error( STATUS_INVALID_PARAMETER
);
1664 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SET_CONTEXT
))) return;
1665 reply
->self
= (thread
== current
);
1667 if (thread
!= current
&& !thread
->context
)
1669 /* thread is not suspended, retry (if it's still running) */
1670 if (thread
->state
== RUNNING
)
1672 set_error( STATUS_PENDING
);
1675 release_object( thread
);
1676 /* make sure we have suspend access */
1677 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
))) return;
1678 suspend_thread( thread
);
1681 else set_error( STATUS_UNSUCCESSFUL
);
1683 else if (context
->cpu
== thread
->process
->cpu
)
1685 unsigned int system_flags
= get_context_system_regs(context
->cpu
) & context
->flags
;
1686 unsigned int client_flags
= context
->flags
& ~system_flags
;
1688 if (system_flags
) set_thread_context( thread
, context
, system_flags
);
1689 if (thread
->context
&& !get_error()) copy_context( thread
->context
, context
, client_flags
);
1691 else set_error( STATUS_INVALID_PARAMETER
);
1693 release_object( thread
);
1696 /* retrieve the suspended context of a thread */
1697 DECL_HANDLER(get_suspend_context
)
1699 if (get_reply_max_size() < sizeof(context_t
))
1701 set_error( STATUS_INVALID_PARAMETER
);
1705 if (current
->suspend_context
)
1707 set_reply_data_ptr( current
->suspend_context
, sizeof(context_t
) );
1708 if (current
->context
== current
->suspend_context
)
1710 current
->context
= NULL
;
1711 stop_thread_if_suspended( current
);
1713 current
->suspend_context
= NULL
;
1715 else set_error( STATUS_INVALID_PARAMETER
); /* not suspended, shouldn't happen */
1718 /* store the suspended context of a thread */
1719 DECL_HANDLER(set_suspend_context
)
1721 const context_t
*context
= get_req_data();
1723 if (get_req_data_size() < sizeof(context_t
))
1725 set_error( STATUS_INVALID_PARAMETER
);
1729 if (current
->context
|| context
->cpu
!= current
->process
->cpu
)
1731 /* nested suspend or exception, shouldn't happen */
1732 set_error( STATUS_INVALID_PARAMETER
);
1734 else if ((current
->suspend_context
= mem_alloc( sizeof(context_t
) )))
1736 memcpy( current
->suspend_context
, get_req_data(), sizeof(context_t
) );
1737 current
->context
= current
->suspend_context
;
1738 if (current
->debug_break
) break_thread( current
);
1742 /* fetch a selector entry for a thread */
1743 DECL_HANDLER(get_selector_entry
)
1745 struct thread
*thread
;
1746 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
)))
1748 get_selector_entry( thread
, req
->entry
, &reply
->base
, &reply
->limit
, &reply
->flags
);
1749 release_object( thread
);