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
55 extern int rtkit_make_realtime(struct thread
*thread
, pid_t tid
, int priority
);
56 extern int rtkit_undo_realtime(struct thread
*thread
);
59 static const unsigned int supported_cpus
= CPU_FLAG(CPU_x86
);
60 #elif defined(__x86_64__)
61 static const unsigned int supported_cpus
= CPU_FLAG(CPU_x86_64
) | CPU_FLAG(CPU_x86
);
62 #elif defined(__powerpc__)
63 static const unsigned int supported_cpus
= CPU_FLAG(CPU_POWERPC
);
64 #elif defined(__arm__)
65 static const unsigned int supported_cpus
= CPU_FLAG(CPU_ARM
);
66 #elif defined(__aarch64__)
67 static const unsigned int supported_cpus
= CPU_FLAG(CPU_ARM64
) | CPU_FLAG(CPU_ARM
);
69 #error Unsupported CPU
76 struct thread_wait
*next
; /* next wait structure for this thread */
77 struct thread
*thread
; /* owner thread */
78 int count
; /* count of objects */
81 enum select_op select
;
82 client_ptr_t key
; /* wait key for keyed events */
83 client_ptr_t cookie
; /* magic cookie to return to client */
85 struct timeout_user
*user
;
86 struct wait_queue_entry queues
[1];
89 /* asynchronous procedure calls */
93 struct object obj
; /* object header */
94 struct list entry
; /* queue linked list */
95 struct thread
*caller
; /* thread that queued this apc */
96 struct object
*owner
; /* object that queued this apc */
97 int executed
; /* has it been executed by the client? */
98 apc_call_t call
; /* call arguments */
99 apc_result_t result
; /* call results once executed */
102 static void dump_thread_apc( struct object
*obj
, int verbose
);
103 static int thread_apc_signaled( struct object
*obj
, struct wait_queue_entry
*entry
);
104 static void thread_apc_destroy( struct object
*obj
);
105 static void clear_apc_queue( struct list
*queue
);
107 static const struct object_ops thread_apc_ops
=
109 sizeof(struct thread_apc
), /* size */
110 dump_thread_apc
, /* dump */
111 no_get_type
, /* get_type */
112 add_queue
, /* add_queue */
113 remove_queue
, /* remove_queue */
114 thread_apc_signaled
, /* signaled */
115 no_satisfied
, /* satisfied */
116 no_signal
, /* signal */
117 no_get_fd
, /* get_fd */
118 no_map_access
, /* map_access */
119 default_get_sd
, /* get_sd */
120 default_set_sd
, /* set_sd */
121 no_lookup_name
, /* lookup_name */
122 no_open_file
, /* open_file */
123 no_close_handle
, /* close_handle */
124 thread_apc_destroy
/* destroy */
128 /* thread operations */
130 static void dump_thread( struct object
*obj
, int verbose
);
131 static int thread_signaled( struct object
*obj
, struct wait_queue_entry
*entry
);
132 static unsigned int thread_map_access( struct object
*obj
, unsigned int access
);
133 static void thread_poll_event( struct fd
*fd
, int event
);
134 static void destroy_thread( struct object
*obj
);
136 static const struct object_ops thread_ops
=
138 sizeof(struct thread
), /* size */
139 dump_thread
, /* dump */
140 no_get_type
, /* get_type */
141 add_queue
, /* add_queue */
142 remove_queue
, /* remove_queue */
143 thread_signaled
, /* signaled */
144 no_satisfied
, /* satisfied */
145 no_signal
, /* signal */
146 no_get_fd
, /* get_fd */
147 thread_map_access
, /* map_access */
148 default_get_sd
, /* get_sd */
149 default_set_sd
, /* set_sd */
150 no_lookup_name
, /* lookup_name */
151 no_open_file
, /* open_file */
152 no_close_handle
, /* close_handle */
153 destroy_thread
/* destroy */
156 static const struct fd_ops thread_fd_ops
=
158 NULL
, /* get_poll_events */
159 thread_poll_event
, /* poll_event */
161 NULL
, /* get_fd_type */
163 NULL
, /* queue_async */
164 NULL
, /* reselect_async */
165 NULL
/* cancel_async */
168 static struct list thread_list
= LIST_INIT(thread_list
);
170 /* initialize the structure for a newly allocated thread */
171 static inline void init_thread_structure( struct thread
*thread
)
175 thread
->unix_pid
= -1; /* not known yet */
176 thread
->unix_tid
= -1; /* not known yet */
177 thread
->context
= NULL
;
178 thread
->suspend_context
= NULL
;
180 thread
->entry_point
= 0;
181 thread
->debug_ctx
= NULL
;
182 thread
->debug_event
= NULL
;
183 thread
->debug_break
= 0;
184 thread
->queue
= NULL
;
187 thread
->req_data
= NULL
;
188 thread
->req_toread
= 0;
189 thread
->reply_data
= NULL
;
190 thread
->reply_towrite
= 0;
191 thread
->request_fd
= NULL
;
192 thread
->reply_fd
= NULL
;
193 thread
->wait_fd
= NULL
;
194 thread
->state
= RUNNING
;
195 thread
->exit_code
= 0;
196 thread
->priority
= 0;
198 thread
->desktop_users
= 0;
199 thread
->token
= NULL
;
201 thread
->creation_time
= current_time
;
202 thread
->exit_time
= 0;
204 list_init( &thread
->mutex_list
);
205 list_init( &thread
->system_apc
);
206 list_init( &thread
->user_apc
);
207 list_init( &thread
->rt_entry
);
210 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
211 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
214 /* check if address looks valid for a client-side data structure (TEB etc.) */
215 static inline int is_valid_address( client_ptr_t addr
)
217 return addr
&& !(addr
% sizeof(int));
220 /* create a new thread */
221 struct thread
*create_thread( int fd
, struct process
*process
)
223 struct thread
*thread
;
225 if (process
->is_terminating
)
228 set_error( STATUS_PROCESS_IS_TERMINATING
);
232 if (!(thread
= alloc_object( &thread_ops
)))
238 init_thread_structure( thread
);
240 thread
->process
= (struct process
*)grab_object( process
);
241 thread
->desktop
= process
->desktop
;
242 thread
->affinity
= process
->affinity
;
243 if (!current
) current
= thread
;
245 list_add_head( &thread_list
, &thread
->entry
);
247 if (!(thread
->id
= alloc_ptid( thread
)))
250 release_object( thread
);
253 if (!(thread
->request_fd
= create_anonymous_fd( &thread_fd_ops
, fd
, &thread
->obj
, 0 )))
255 release_object( thread
);
259 set_fd_events( thread
->request_fd
, POLLIN
); /* start listening to events */
260 add_process_thread( thread
->process
, thread
);
264 /* handle a client event */
265 static void thread_poll_event( struct fd
*fd
, int event
)
267 struct thread
*thread
= get_fd_user( fd
);
268 assert( thread
->obj
.ops
== &thread_ops
);
270 grab_object( thread
);
271 if (event
& (POLLERR
| POLLHUP
)) kill_thread( thread
, 0 );
272 else if (event
& POLLIN
) read_request( thread
);
273 else if (event
& POLLOUT
) write_reply( thread
);
274 release_object( thread
);
277 /* cleanup everything that is no longer needed by a dead thread */
278 /* used by destroy_thread and kill_thread */
279 static void cleanup_thread( struct thread
*thread
)
283 thread
->unix_tid
= -1;
284 if (!list_empty(&thread
->rt_entry
))
285 rtkit_undo_realtime(thread
);
286 clear_apc_queue( &thread
->system_apc
);
287 clear_apc_queue( &thread
->user_apc
);
288 free( thread
->req_data
);
289 free( thread
->reply_data
);
290 if (thread
->request_fd
) release_object( thread
->request_fd
);
291 if (thread
->reply_fd
) release_object( thread
->reply_fd
);
292 if (thread
->wait_fd
) release_object( thread
->wait_fd
);
293 free( thread
->suspend_context
);
294 cleanup_clipboard_thread(thread
);
295 destroy_thread_windows( thread
);
296 free_msg_queue( thread
);
297 close_thread_desktop( thread
);
298 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
300 if (thread
->inflight
[i
].client
!= -1)
302 close( thread
->inflight
[i
].server
);
303 thread
->inflight
[i
].client
= thread
->inflight
[i
].server
= -1;
306 thread
->req_data
= NULL
;
307 thread
->reply_data
= NULL
;
308 thread
->request_fd
= NULL
;
309 thread
->reply_fd
= NULL
;
310 thread
->wait_fd
= NULL
;
311 thread
->context
= NULL
;
312 thread
->suspend_context
= NULL
;
316 /* destroy a thread when its refcount is 0 */
317 static void destroy_thread( struct object
*obj
)
319 struct thread
*thread
= (struct thread
*)obj
;
320 assert( obj
->ops
== &thread_ops
);
322 assert( !thread
->debug_ctx
); /* cannot still be debugging something */
323 list_remove( &thread
->entry
);
324 cleanup_thread( thread
);
325 release_object( thread
->process
);
326 if (thread
->id
) free_ptid( thread
->id
);
327 if (thread
->token
) release_object( thread
->token
);
330 /* dump a thread on stdout for debugging purposes */
331 static void dump_thread( struct object
*obj
, int verbose
)
333 struct thread
*thread
= (struct thread
*)obj
;
334 assert( obj
->ops
== &thread_ops
);
336 fprintf( stderr
, "Thread id=%04x unix pid=%d unix tid=%d state=%d\n",
337 thread
->id
, thread
->unix_pid
, thread
->unix_tid
, thread
->state
);
340 static int thread_signaled( struct object
*obj
, struct wait_queue_entry
*entry
)
342 struct thread
*mythread
= (struct thread
*)obj
;
343 return (mythread
->state
== TERMINATED
);
346 static unsigned int thread_map_access( struct object
*obj
, unsigned int access
)
348 if (access
& GENERIC_READ
) access
|= STANDARD_RIGHTS_READ
| THREAD_QUERY_INFORMATION
| THREAD_GET_CONTEXT
;
349 if (access
& GENERIC_WRITE
) access
|= STANDARD_RIGHTS_WRITE
| THREAD_SET_INFORMATION
| THREAD_SET_CONTEXT
|
350 THREAD_TERMINATE
| THREAD_SUSPEND_RESUME
;
351 if (access
& GENERIC_EXECUTE
) access
|= STANDARD_RIGHTS_EXECUTE
| SYNCHRONIZE
| THREAD_QUERY_LIMITED_INFORMATION
;
352 if (access
& GENERIC_ALL
) access
|= THREAD_ALL_ACCESS
;
354 if (access
& THREAD_QUERY_INFORMATION
) access
|= THREAD_QUERY_LIMITED_INFORMATION
;
355 if (access
& THREAD_SET_INFORMATION
) access
|= THREAD_SET_LIMITED_INFORMATION
;
357 return access
& ~(GENERIC_READ
| GENERIC_WRITE
| GENERIC_EXECUTE
| GENERIC_ALL
);
360 static void dump_thread_apc( struct object
*obj
, int verbose
)
362 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
363 assert( obj
->ops
== &thread_apc_ops
);
365 fprintf( stderr
, "APC owner=%p type=%u\n", apc
->owner
, apc
->call
.type
);
368 static int thread_apc_signaled( struct object
*obj
, struct wait_queue_entry
*entry
)
370 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
371 return apc
->executed
;
374 static void thread_apc_destroy( struct object
*obj
)
376 struct thread_apc
*apc
= (struct thread_apc
*)obj
;
377 if (apc
->caller
) release_object( apc
->caller
);
378 if (apc
->owner
) release_object( apc
->owner
);
381 /* queue an async procedure call */
382 static struct thread_apc
*create_apc( struct object
*owner
, const apc_call_t
*call_data
)
384 struct thread_apc
*apc
;
386 if ((apc
= alloc_object( &thread_apc_ops
)))
388 apc
->call
= *call_data
;
392 apc
->result
.type
= APC_NONE
;
393 if (owner
) grab_object( owner
);
398 /* get a thread pointer from a thread id (and increment the refcount) */
399 struct thread
*get_thread_from_id( thread_id_t id
)
401 struct object
*obj
= get_ptid_entry( id
);
403 if (obj
&& obj
->ops
== &thread_ops
) return (struct thread
*)grab_object( obj
);
404 set_error( STATUS_INVALID_CID
);
408 /* get a thread from a handle (and increment the refcount) */
409 struct thread
*get_thread_from_handle( obj_handle_t handle
, unsigned int access
)
411 return (struct thread
*)get_handle_obj( current
->process
, handle
,
412 access
, &thread_ops
);
415 /* find a thread from a Unix tid */
416 struct thread
*get_thread_from_tid( int tid
)
418 struct thread
*thread
;
420 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
422 if (thread
->unix_tid
== tid
) return thread
;
427 /* find a thread from a Unix pid */
428 struct thread
*get_thread_from_pid( int pid
)
430 struct thread
*thread
;
432 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
434 if (thread
->unix_pid
== pid
) return thread
;
439 int set_thread_affinity( struct thread
*thread
, affinity_t affinity
)
442 #ifdef HAVE_SCHED_SETAFFINITY
443 if (thread
->unix_tid
!= -1)
450 for (i
= 0, mask
= 1; mask
; i
++, mask
<<= 1)
451 if (affinity
& mask
) CPU_SET( i
, &set
);
453 ret
= sched_setaffinity( thread
->unix_tid
, sizeof(set
), &set
);
456 if (!ret
) thread
->affinity
= affinity
;
460 affinity_t
get_thread_affinity( struct thread
*thread
)
463 #ifdef HAVE_SCHED_SETAFFINITY
464 if (thread
->unix_tid
!= -1)
469 if (!sched_getaffinity( thread
->unix_tid
, sizeof(set
), &set
))
470 for (i
= 0; i
< 8 * sizeof(mask
); i
++)
471 if (CPU_ISSET( i
, &set
)) mask
|= (affinity_t
)1 << i
;
474 if (!mask
) mask
= ~(affinity_t
)0;
478 #define THREAD_PRIORITY_REALTIME_HIGHEST 6
479 #define THREAD_PRIORITY_REALTIME_LOWEST -7
481 static int rtprio(int ntprio
)
483 if (ntprio
== THREAD_PRIORITY_TIME_CRITICAL
- 1)
485 else if (ntprio
== THREAD_PRIORITY_TIME_CRITICAL
)
490 /* set all information about a thread */
491 static void set_thread_info( struct thread
*thread
,
492 const struct set_thread_info_request
*req
)
494 if (req
->mask
& SET_THREAD_INFO_PRIORITY
)
496 int max
= THREAD_PRIORITY_HIGHEST
;
497 int min
= THREAD_PRIORITY_LOWEST
;
498 if (thread
->process
->priority
== PROCESS_PRIOCLASS_REALTIME
)
500 max
= THREAD_PRIORITY_REALTIME_HIGHEST
;
501 min
= THREAD_PRIORITY_REALTIME_LOWEST
;
503 if ((req
->priority
>= min
&& req
->priority
<= max
) ||
504 req
->priority
== THREAD_PRIORITY_IDLE
||
505 req
->priority
== THREAD_PRIORITY_TIME_CRITICAL
- 1 ||
506 req
->priority
== THREAD_PRIORITY_TIME_CRITICAL
)
508 int newprio
= rtprio(req
->priority
);
509 if (thread
->unix_tid
== -1)
510 thread
->rt_prio
= newprio
;
511 else if (thread
->priority
== THREAD_PRIORITY_TIME_CRITICAL
&& !newprio
)
512 rtkit_undo_realtime(thread
);
513 else if (thread
->rt_prio
!= newprio
)
514 rtkit_make_realtime(thread
, thread
->unix_tid
, newprio
);
517 thread
->priority
= THREAD_PRIORITY_TIME_CRITICAL
;
519 thread
->priority
= req
->priority
;
522 set_error( STATUS_INVALID_PARAMETER
);
524 if (req
->mask
& SET_THREAD_INFO_AFFINITY
)
526 if ((req
->affinity
& thread
->process
->affinity
) != req
->affinity
)
527 set_error( STATUS_INVALID_PARAMETER
);
528 else if (thread
->state
== TERMINATED
)
529 set_error( STATUS_THREAD_IS_TERMINATING
);
530 else if (set_thread_affinity( thread
, req
->affinity
))
533 if (req
->mask
& SET_THREAD_INFO_TOKEN
)
534 security_set_thread_token( thread
, req
->token
);
535 if (req
->mask
& SET_THREAD_INFO_ENTRYPOINT
)
536 thread
->entry_point
= req
->entry_point
;
539 /* stop a thread (at the Unix level) */
540 void stop_thread( struct thread
*thread
)
542 if (thread
->context
) return; /* already inside a debug event, no need for a signal */
543 /* can't stop a thread while initialisation is in progress */
544 if (is_process_init_done(thread
->process
)) send_thread_signal( thread
, SIGUSR1
);
547 /* stop a thread if it's supposed to be suspended */
548 void stop_thread_if_suspended( struct thread
*thread
)
550 if (thread
->suspend
+ thread
->process
->suspend
> 0) stop_thread( thread
);
553 /* suspend a thread */
554 static int suspend_thread( struct thread
*thread
)
556 int old_count
= thread
->suspend
;
557 if (thread
->suspend
< MAXIMUM_SUSPEND_COUNT
)
559 if (!(thread
->process
->suspend
+ thread
->suspend
++)) stop_thread( thread
);
561 else set_error( STATUS_SUSPEND_COUNT_EXCEEDED
);
565 /* resume a thread */
566 static int resume_thread( struct thread
*thread
)
568 int old_count
= thread
->suspend
;
569 if (thread
->suspend
> 0)
571 if (!(--thread
->suspend
+ thread
->process
->suspend
)) wake_thread( thread
);
576 /* add a thread to an object wait queue; return 1 if OK, 0 on error */
577 int add_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
581 list_add_tail( &obj
->wait_queue
, &entry
->entry
);
585 /* remove a thread from an object wait queue */
586 void remove_queue( struct object
*obj
, struct wait_queue_entry
*entry
)
588 list_remove( &entry
->entry
);
589 release_object( obj
);
592 struct thread
*get_wait_queue_thread( struct wait_queue_entry
*entry
)
594 return entry
->wait
->thread
;
597 enum select_op
get_wait_queue_select_op( struct wait_queue_entry
*entry
)
599 return entry
->wait
->select
;
602 client_ptr_t
get_wait_queue_key( struct wait_queue_entry
*entry
)
604 return entry
->wait
->key
;
607 void make_wait_abandoned( struct wait_queue_entry
*entry
)
609 entry
->wait
->abandoned
= 1;
613 static void end_wait( struct thread
*thread
)
615 struct thread_wait
*wait
= thread
->wait
;
616 struct wait_queue_entry
*entry
;
620 thread
->wait
= wait
->next
;
621 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
622 entry
->obj
->ops
->remove_queue( entry
->obj
, entry
);
623 if (wait
->user
) remove_timeout_user( wait
->user
);
627 /* build the thread wait structure */
628 static int wait_on( const select_op_t
*select_op
, unsigned int count
, struct object
*objects
[],
629 int flags
, timeout_t timeout
)
631 struct thread_wait
*wait
;
632 struct wait_queue_entry
*entry
;
635 if (!(wait
= mem_alloc( FIELD_OFFSET(struct thread_wait
, queues
[count
]) ))) return 0;
636 wait
->next
= current
->wait
;
637 wait
->thread
= current
;
640 wait
->select
= select_op
->op
;
643 wait
->timeout
= timeout
;
645 current
->wait
= wait
;
647 for (i
= 0, entry
= wait
->queues
; i
< count
; i
++, entry
++)
649 struct object
*obj
= objects
[i
];
651 if (!obj
->ops
->add_queue( obj
, entry
))
661 static int wait_on_handles( const select_op_t
*select_op
, unsigned int count
, const obj_handle_t
*handles
,
662 int flags
, timeout_t timeout
)
664 struct object
*objects
[MAXIMUM_WAIT_OBJECTS
];
668 assert( count
<= MAXIMUM_WAIT_OBJECTS
);
670 for (i
= 0; i
< count
; i
++)
671 if (!(objects
[i
] = get_handle_obj( current
->process
, handles
[i
], SYNCHRONIZE
, NULL
)))
674 if (i
== count
) ret
= wait_on( select_op
, count
, objects
, flags
, timeout
);
676 while (i
> 0) release_object( objects
[--i
] );
680 /* check if the thread waiting condition is satisfied */
681 static int check_wait( struct thread
*thread
)
684 struct thread_wait
*wait
= thread
->wait
;
685 struct wait_queue_entry
*entry
;
689 if ((wait
->flags
& SELECT_INTERRUPTIBLE
) && !list_empty( &thread
->system_apc
))
690 return STATUS_USER_APC
;
692 /* Suspended threads may not acquire locks, but they can run system APCs */
693 if (thread
->process
->suspend
+ thread
->suspend
> 0) return -1;
695 if (wait
->select
== SELECT_WAIT_ALL
)
698 /* Note: we must check them all anyway, as some objects may
699 * want to do something when signaled, even if others are not */
700 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
701 not_ok
|= !entry
->obj
->ops
->signaled( entry
->obj
, entry
);
702 if (not_ok
) goto other_checks
;
703 /* Wait satisfied: tell it to all objects */
704 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
705 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
706 return wait
->abandoned
? STATUS_ABANDONED_WAIT_0
: STATUS_WAIT_0
;
710 for (i
= 0, entry
= wait
->queues
; i
< wait
->count
; i
++, entry
++)
712 if (!entry
->obj
->ops
->signaled( entry
->obj
, entry
)) continue;
713 /* Wait satisfied: tell it to the object */
714 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
715 if (wait
->abandoned
) i
+= STATUS_ABANDONED_WAIT_0
;
721 if ((wait
->flags
& SELECT_ALERTABLE
) && !list_empty(&thread
->user_apc
)) return STATUS_USER_APC
;
722 if (wait
->timeout
<= current_time
) return STATUS_TIMEOUT
;
726 /* send the wakeup signal to a thread */
727 static int send_thread_wakeup( struct thread
*thread
, client_ptr_t cookie
, int signaled
)
729 struct wake_up_reply reply
;
732 memset( &reply
, 0, sizeof(reply
) );
733 reply
.cookie
= cookie
;
734 reply
.signaled
= signaled
;
735 if ((ret
= write( get_unix_fd( thread
->wait_fd
), &reply
, sizeof(reply
) )) == sizeof(reply
))
738 fatal_protocol_error( thread
, "partial wakeup write %d\n", ret
);
739 else if (errno
== EPIPE
)
740 kill_thread( thread
, 0 ); /* normal death */
742 fatal_protocol_error( thread
, "write: %s\n", strerror( errno
));
746 /* attempt to wake up a thread */
747 /* return >0 if OK, 0 if the wait condition is still not satisfied and -1 on error */
748 int wake_thread( struct thread
*thread
)
753 for (count
= 0; thread
->wait
; count
++)
755 if ((signaled
= check_wait( thread
)) == -1) break;
757 cookie
= thread
->wait
->cookie
;
758 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d\n", thread
->id
, signaled
);
760 if (cookie
&& send_thread_wakeup( thread
, cookie
, signaled
) == -1) /* error */
762 if (!count
) count
= -1;
769 /* attempt to wake up a thread from a wait queue entry, assuming that it is signaled */
770 int wake_thread_queue_entry( struct wait_queue_entry
*entry
)
772 struct thread_wait
*wait
= entry
->wait
;
773 struct thread
*thread
= wait
->thread
;
777 if (thread
->wait
!= wait
) return 0; /* not the current wait */
778 if (thread
->process
->suspend
+ thread
->suspend
> 0) return 0; /* cannot acquire locks */
780 assert( wait
->select
!= SELECT_WAIT_ALL
);
782 signaled
= entry
- wait
->queues
;
783 entry
->obj
->ops
->satisfied( entry
->obj
, entry
);
784 if (wait
->abandoned
) signaled
+= STATUS_ABANDONED_WAIT_0
;
786 cookie
= wait
->cookie
;
787 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=%d\n", thread
->id
, signaled
);
790 if (!cookie
|| send_thread_wakeup( thread
, cookie
, signaled
) != -1)
791 wake_thread( thread
); /* check other waits too */
796 /* thread wait timeout */
797 static void thread_timeout( void *ptr
)
799 struct thread_wait
*wait
= ptr
;
800 struct thread
*thread
= wait
->thread
;
801 client_ptr_t cookie
= wait
->cookie
;
804 if (thread
->wait
!= wait
) return; /* not the top-level wait, ignore it */
805 if (thread
->suspend
+ thread
->process
->suspend
> 0) return; /* suspended, ignore it */
807 if (debug_level
) fprintf( stderr
, "%04x: *wakeup* signaled=TIMEOUT\n", thread
->id
);
811 if (send_thread_wakeup( thread
, cookie
, STATUS_TIMEOUT
) == -1) return;
812 /* check if other objects have become signaled in the meantime */
813 wake_thread( thread
);
816 /* try signaling an event flag, a semaphore or a mutex */
817 static int signal_object( obj_handle_t handle
)
822 obj
= get_handle_obj( current
->process
, handle
, 0, NULL
);
825 ret
= obj
->ops
->signal( obj
, get_handle_access( current
->process
, handle
));
826 release_object( obj
);
831 /* select on a list of handles */
832 static timeout_t
select_on( const select_op_t
*select_op
, data_size_t op_size
, client_ptr_t cookie
,
833 int flags
, timeout_t timeout
)
837 struct object
*object
;
839 if (timeout
<= 0) timeout
= current_time
- timeout
;
841 switch (select_op
->op
)
844 if (!wait_on( select_op
, 0, NULL
, flags
, timeout
)) return timeout
;
848 case SELECT_WAIT_ALL
:
849 count
= (op_size
- offsetof( select_op_t
, wait
.handles
)) / sizeof(select_op
->wait
.handles
[0]);
850 if (op_size
< offsetof( select_op_t
, wait
.handles
) || count
> MAXIMUM_WAIT_OBJECTS
)
852 set_error( STATUS_INVALID_PARAMETER
);
855 if (!wait_on_handles( select_op
, count
, select_op
->wait
.handles
, flags
, timeout
))
859 case SELECT_SIGNAL_AND_WAIT
:
860 if (!wait_on_handles( select_op
, 1, &select_op
->signal_and_wait
.wait
, flags
, timeout
))
862 if (select_op
->signal_and_wait
.signal
)
864 if (!signal_object( select_op
->signal_and_wait
.signal
))
869 /* check if we woke ourselves up */
870 if (!current
->wait
) return timeout
;
874 case SELECT_KEYED_EVENT_WAIT
:
875 case SELECT_KEYED_EVENT_RELEASE
:
876 object
= (struct object
*)get_keyed_event_obj( current
->process
, select_op
->keyed_event
.handle
,
877 select_op
->op
== SELECT_KEYED_EVENT_WAIT
? KEYEDEVENT_WAIT
: KEYEDEVENT_WAKE
);
878 if (!object
) return timeout
;
879 ret
= wait_on( select_op
, 1, &object
, flags
, timeout
);
880 release_object( object
);
881 if (!ret
) return timeout
;
882 current
->wait
->key
= select_op
->keyed_event
.key
;
886 set_error( STATUS_INVALID_PARAMETER
);
890 if ((ret
= check_wait( current
)) != -1)
892 /* condition is already satisfied */
898 /* now we need to wait */
899 if (current
->wait
->timeout
!= TIMEOUT_INFINITE
)
901 if (!(current
->wait
->user
= add_timeout_user( current
->wait
->timeout
,
902 thread_timeout
, current
->wait
)))
908 current
->wait
->cookie
= cookie
;
909 set_error( STATUS_PENDING
);
913 /* attempt to wake threads sleeping on the object wait queue */
914 void wake_up( struct object
*obj
, int max
)
919 LIST_FOR_EACH( ptr
, &obj
->wait_queue
)
921 struct wait_queue_entry
*entry
= LIST_ENTRY( ptr
, struct wait_queue_entry
, entry
);
922 if (!(ret
= wake_thread( get_wait_queue_thread( entry
)))) continue;
923 if (ret
> 0 && max
&& !--max
) break;
924 /* restart at the head of the list since a wake up can change the object wait queue */
925 ptr
= &obj
->wait_queue
;
929 /* return the apc queue to use for a given apc type */
930 static inline struct list
*get_apc_queue( struct thread
*thread
, enum apc_type type
)
937 return &thread
->user_apc
;
939 return &thread
->system_apc
;
943 /* check if thread is currently waiting for a (system) apc */
944 static inline int is_in_apc_wait( struct thread
*thread
)
946 return (thread
->process
->suspend
|| thread
->suspend
||
947 (thread
->wait
&& (thread
->wait
->flags
& SELECT_INTERRUPTIBLE
)));
950 /* queue an existing APC to a given thread */
951 static int queue_apc( struct process
*process
, struct thread
*thread
, struct thread_apc
*apc
)
955 if (!thread
) /* find a suitable thread inside the process */
957 struct thread
*candidate
;
959 /* first try to find a waiting thread */
960 LIST_FOR_EACH_ENTRY( candidate
, &process
->thread_list
, struct thread
, proc_entry
)
962 if (candidate
->state
== TERMINATED
) continue;
963 if (is_in_apc_wait( candidate
))
971 /* then use the first one that accepts a signal */
972 LIST_FOR_EACH_ENTRY( candidate
, &process
->thread_list
, struct thread
, proc_entry
)
974 if (send_thread_signal( candidate
, SIGUSR1
))
981 if (!thread
) return 0; /* nothing found */
982 queue
= get_apc_queue( thread
, apc
->call
.type
);
986 if (thread
->state
== TERMINATED
) return 0;
987 queue
= get_apc_queue( thread
, apc
->call
.type
);
988 /* send signal for system APCs if needed */
989 if (queue
== &thread
->system_apc
&& list_empty( queue
) && !is_in_apc_wait( thread
))
991 if (!send_thread_signal( thread
, SIGUSR1
)) return 0;
993 /* cancel a possible previous APC with the same owner */
994 if (apc
->owner
) thread_cancel_apc( thread
, apc
->owner
, apc
->call
.type
);
998 list_add_tail( queue
, &apc
->entry
);
999 if (!list_prev( queue
, &apc
->entry
)) /* first one */
1000 wake_thread( thread
);
1005 /* queue an async procedure call */
1006 int thread_queue_apc( struct thread
*thread
, struct object
*owner
, const apc_call_t
*call_data
)
1008 struct thread_apc
*apc
;
1011 if ((apc
= create_apc( owner
, call_data
)))
1013 ret
= queue_apc( NULL
, thread
, apc
);
1014 release_object( apc
);
1019 /* cancel the async procedure call owned by a specific object */
1020 void thread_cancel_apc( struct thread
*thread
, struct object
*owner
, enum apc_type type
)
1022 struct thread_apc
*apc
;
1023 struct list
*queue
= get_apc_queue( thread
, type
);
1025 LIST_FOR_EACH_ENTRY( apc
, queue
, struct thread_apc
, entry
)
1027 if (apc
->owner
!= owner
) continue;
1028 list_remove( &apc
->entry
);
1030 wake_up( &apc
->obj
, 0 );
1031 release_object( apc
);
1036 /* remove the head apc from the queue; the returned object must be released by the caller */
1037 static struct thread_apc
*thread_dequeue_apc( struct thread
*thread
, int system_only
)
1039 struct thread_apc
*apc
= NULL
;
1040 struct list
*ptr
= list_head( &thread
->system_apc
);
1042 if (!ptr
&& !system_only
) ptr
= list_head( &thread
->user_apc
);
1045 apc
= LIST_ENTRY( ptr
, struct thread_apc
, entry
);
1051 /* clear an APC queue, cancelling all the APCs on it */
1052 static void clear_apc_queue( struct list
*queue
)
1056 while ((ptr
= list_head( queue
)))
1058 struct thread_apc
*apc
= LIST_ENTRY( ptr
, struct thread_apc
, entry
);
1059 list_remove( &apc
->entry
);
1061 wake_up( &apc
->obj
, 0 );
1062 release_object( apc
);
1066 /* add an fd to the inflight list */
1067 /* return list index, or -1 on error */
1068 int thread_add_inflight_fd( struct thread
*thread
, int client
, int server
)
1072 if (server
== -1) return -1;
1079 /* first check if we already have an entry for this fd */
1080 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1081 if (thread
->inflight
[i
].client
== client
)
1083 close( thread
->inflight
[i
].server
);
1084 thread
->inflight
[i
].server
= server
;
1088 /* now find a free spot to store it */
1089 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1090 if (thread
->inflight
[i
].client
== -1)
1092 thread
->inflight
[i
].client
= client
;
1093 thread
->inflight
[i
].server
= server
;
1101 /* get an inflight fd and purge it from the list */
1102 /* the fd must be closed when no longer used */
1103 int thread_get_inflight_fd( struct thread
*thread
, int client
)
1107 if (client
== -1) return -1;
1111 for (i
= 0; i
< MAX_INFLIGHT_FDS
; i
++)
1113 if (thread
->inflight
[i
].client
== client
)
1115 ret
= thread
->inflight
[i
].server
;
1116 thread
->inflight
[i
].server
= thread
->inflight
[i
].client
= -1;
1120 } while (!receive_fd( thread
->process
)); /* in case it is still in the socket buffer */
1124 /* kill a thread on the spot */
1125 void kill_thread( struct thread
*thread
, int violent_death
)
1127 if (thread
->state
== TERMINATED
) return; /* already killed */
1128 thread
->state
= TERMINATED
;
1129 thread
->exit_time
= current_time
;
1130 if (current
== thread
) current
= NULL
;
1132 fprintf( stderr
,"%04x: *killed* exit_code=%d\n",
1133 thread
->id
, thread
->exit_code
);
1136 while (thread
->wait
) end_wait( thread
);
1137 send_thread_wakeup( thread
, 0, thread
->exit_code
);
1138 /* if it is waiting on the socket, we don't need to send a SIGQUIT */
1141 kill_console_processes( thread
, 0 );
1142 debug_exit_thread( thread
);
1143 abandon_mutexes( thread
);
1144 wake_up( &thread
->obj
, 0 );
1145 if (violent_death
) send_thread_signal( thread
, SIGQUIT
);
1146 cleanup_thread( thread
);
1147 remove_process_thread( thread
->process
, thread
);
1148 release_object( thread
);
1151 /* copy parts of a context structure */
1152 static void copy_context( context_t
*to
, const context_t
*from
, unsigned int flags
)
1154 assert( to
->cpu
== from
->cpu
);
1156 if (flags
& SERVER_CTX_CONTROL
) to
->ctl
= from
->ctl
;
1157 if (flags
& SERVER_CTX_INTEGER
) to
->integer
= from
->integer
;
1158 if (flags
& SERVER_CTX_SEGMENTS
) to
->seg
= from
->seg
;
1159 if (flags
& SERVER_CTX_FLOATING_POINT
) to
->fp
= from
->fp
;
1160 if (flags
& SERVER_CTX_DEBUG_REGISTERS
) to
->debug
= from
->debug
;
1161 if (flags
& SERVER_CTX_EXTENDED_REGISTERS
) to
->ext
= from
->ext
;
1164 /* return the context flags that correspond to system regs */
1165 /* (system regs are the ones we can't access on the client side) */
1166 static unsigned int get_context_system_regs( enum cpu_type cpu
)
1170 case CPU_x86
: return SERVER_CTX_DEBUG_REGISTERS
;
1171 case CPU_x86_64
: return SERVER_CTX_DEBUG_REGISTERS
;
1172 case CPU_POWERPC
: return 0;
1173 case CPU_ARM
: return 0;
1174 case CPU_ARM64
: return 0;
1179 /* trigger a breakpoint event in a given thread */
1180 void break_thread( struct thread
*thread
)
1184 assert( thread
->context
);
1186 memset( &data
, 0, sizeof(data
) );
1187 data
.exception
.first
= 1;
1188 data
.exception
.exc_code
= STATUS_BREAKPOINT
;
1189 data
.exception
.flags
= EXCEPTION_CONTINUABLE
;
1190 switch (thread
->context
->cpu
)
1193 data
.exception
.address
= thread
->context
->ctl
.i386_regs
.eip
;
1196 data
.exception
.address
= thread
->context
->ctl
.x86_64_regs
.rip
;
1199 data
.exception
.address
= thread
->context
->ctl
.powerpc_regs
.iar
;
1202 data
.exception
.address
= thread
->context
->ctl
.arm_regs
.pc
;
1205 data
.exception
.address
= thread
->context
->ctl
.arm64_regs
.pc
;
1208 generate_debug_event( thread
, EXCEPTION_DEBUG_EVENT
, &data
);
1209 thread
->debug_break
= 0;
1212 /* take a snapshot of currently running threads */
1213 struct thread_snapshot
*thread_snap( int *count
)
1215 struct thread_snapshot
*snapshot
, *ptr
;
1216 struct thread
*thread
;
1219 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
1220 if (thread
->state
!= TERMINATED
) total
++;
1221 if (!total
|| !(snapshot
= mem_alloc( sizeof(*snapshot
) * total
))) return NULL
;
1223 LIST_FOR_EACH_ENTRY( thread
, &thread_list
, struct thread
, entry
)
1225 if (thread
->state
== TERMINATED
) continue;
1226 ptr
->thread
= thread
;
1227 ptr
->count
= thread
->obj
.refcount
;
1228 ptr
->priority
= thread
->priority
;
1229 grab_object( thread
);
1236 /* gets the current impersonation token */
1237 struct token
*thread_get_impersonation_token( struct thread
*thread
)
1240 return thread
->token
;
1242 return thread
->process
->token
;
1245 /* check if a cpu type can be supported on this server */
1246 int is_cpu_supported( enum cpu_type cpu
)
1248 unsigned int prefix_cpu_mask
= get_prefix_cpu_mask();
1250 if (CPU_FLAG(cpu
) && (supported_cpus
& prefix_cpu_mask
& CPU_FLAG(cpu
))) return 1;
1251 if (!(supported_cpus
& prefix_cpu_mask
))
1252 set_error( STATUS_NOT_SUPPORTED
);
1253 else if (supported_cpus
& CPU_FLAG(cpu
))
1254 set_error( STATUS_INVALID_IMAGE_WIN_64
); /* server supports it but not the prefix */
1256 set_error( STATUS_INVALID_IMAGE_FORMAT
);
1260 /* create a new thread */
1261 DECL_HANDLER(new_thread
)
1263 struct thread
*thread
;
1264 int request_fd
= thread_get_inflight_fd( current
, req
->request_fd
);
1266 if (request_fd
== -1 || fcntl( request_fd
, F_SETFL
, O_NONBLOCK
) == -1)
1268 if (request_fd
!= -1) close( request_fd
);
1269 set_error( STATUS_INVALID_HANDLE
);
1273 if ((thread
= create_thread( request_fd
, current
->process
)))
1275 if (req
->suspend
) thread
->suspend
++;
1276 reply
->tid
= get_thread_id( thread
);
1277 if ((reply
->handle
= alloc_handle( current
->process
, thread
, req
->access
, req
->attributes
)))
1279 /* thread object will be released when the thread gets killed */
1282 kill_thread( thread
, 1 );
1286 /* initialize a new thread */
1287 DECL_HANDLER(init_thread
)
1289 struct process
*process
= current
->process
;
1290 int wait_fd
, reply_fd
;
1292 if ((reply_fd
= thread_get_inflight_fd( current
, req
->reply_fd
)) == -1)
1294 set_error( STATUS_TOO_MANY_OPENED_FILES
);
1297 if ((wait_fd
= thread_get_inflight_fd( current
, req
->wait_fd
)) == -1)
1299 set_error( STATUS_TOO_MANY_OPENED_FILES
);
1303 if (current
->reply_fd
) /* already initialised */
1305 set_error( STATUS_INVALID_PARAMETER
);
1309 if (fcntl( reply_fd
, F_SETFL
, O_NONBLOCK
) == -1) goto error
;
1311 current
->reply_fd
= create_anonymous_fd( &thread_fd_ops
, reply_fd
, ¤t
->obj
, 0 );
1312 current
->wait_fd
= create_anonymous_fd( &thread_fd_ops
, wait_fd
, ¤t
->obj
, 0 );
1313 if (!current
->reply_fd
|| !current
->wait_fd
) return;
1315 if (!is_valid_address(req
->teb
))
1317 set_error( STATUS_INVALID_PARAMETER
);
1321 current
->unix_pid
= req
->unix_pid
;
1322 current
->unix_tid
= req
->unix_tid
;
1323 current
->teb
= req
->teb
;
1324 current
->entry_point
= process
->peb
? req
->entry
: 0;
1326 if (!process
->peb
) /* first thread, initialize the process too */
1328 if (!is_cpu_supported( req
->cpu
)) return;
1329 process
->unix_pid
= current
->unix_pid
;
1330 process
->peb
= req
->entry
;
1331 process
->cpu
= req
->cpu
;
1332 reply
->info_size
= init_process( current
);
1333 if (!process
->parent
)
1334 process
->affinity
= current
->affinity
= get_thread_affinity( current
);
1336 set_thread_affinity( current
, current
->affinity
);
1340 if (req
->cpu
!= process
->cpu
)
1342 set_error( STATUS_INVALID_PARAMETER
);
1345 if (process
->unix_pid
!= current
->unix_pid
)
1346 process
->unix_pid
= -1; /* can happen with linuxthreads */
1347 stop_thread_if_suspended( current
);
1348 generate_debug_event( current
, CREATE_THREAD_DEBUG_EVENT
, &req
->entry
);
1349 set_thread_affinity( current
, current
->affinity
);
1351 debug_level
= max( debug_level
, req
->debug_level
);
1353 /* Raced with SetThreadPriority */
1354 if (current
->priority
== THREAD_PRIORITY_TIME_CRITICAL
)
1355 rtkit_make_realtime(current
, current
->unix_tid
, current
->rt_prio
);
1357 reply
->pid
= get_process_id( process
);
1358 reply
->tid
= get_thread_id( current
);
1359 reply
->version
= SERVER_PROTOCOL_VERSION
;
1360 reply
->server_start
= server_start_time
;
1361 reply
->all_cpus
= supported_cpus
& get_prefix_cpu_mask();
1365 if (reply_fd
!= -1) close( reply_fd
);
1366 if (wait_fd
!= -1) close( wait_fd
);
1369 /* terminate a thread */
1370 DECL_HANDLER(terminate_thread
)
1372 struct thread
*thread
;
1376 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_TERMINATE
)))
1378 thread
->exit_code
= req
->exit_code
;
1379 if (thread
!= current
) kill_thread( thread
, 1 );
1383 reply
->last
= (thread
->process
->running_threads
== 1);
1385 release_object( thread
);
1389 /* open a handle to a thread */
1390 DECL_HANDLER(open_thread
)
1392 struct thread
*thread
= get_thread_from_id( req
->tid
);
1397 reply
->handle
= alloc_handle( current
->process
, thread
, req
->access
, req
->attributes
);
1398 release_object( thread
);
1402 /* fetch information about a thread */
1403 DECL_HANDLER(get_thread_info
)
1405 struct thread
*thread
;
1406 obj_handle_t handle
= req
->handle
;
1408 if (!handle
) thread
= get_thread_from_id( req
->tid_in
);
1409 else thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_LIMITED_INFORMATION
);
1413 reply
->pid
= get_process_id( thread
->process
);
1414 reply
->tid
= get_thread_id( thread
);
1415 reply
->teb
= thread
->teb
;
1416 reply
->entry_point
= thread
->entry_point
;
1417 reply
->exit_code
= (thread
->state
== TERMINATED
) ? thread
->exit_code
: STATUS_PENDING
;
1418 reply
->priority
= thread
->priority
;
1419 reply
->affinity
= thread
->affinity
;
1420 reply
->last
= thread
->process
->running_threads
== 1;
1422 release_object( thread
);
1426 /* fetch information about thread times */
1427 DECL_HANDLER(get_thread_times
)
1429 struct thread
*thread
;
1431 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
)))
1433 reply
->creation_time
= thread
->creation_time
;
1434 reply
->exit_time
= thread
->exit_time
;
1436 release_object( thread
);
1440 /* set information about a thread */
1441 DECL_HANDLER(set_thread_info
)
1443 struct thread
*thread
;
1445 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SET_INFORMATION
)))
1447 set_thread_info( thread
, req
);
1448 release_object( thread
);
1452 /* suspend a thread */
1453 DECL_HANDLER(suspend_thread
)
1455 struct thread
*thread
;
1457 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
1459 if (thread
->state
== TERMINATED
) set_error( STATUS_ACCESS_DENIED
);
1460 else reply
->count
= suspend_thread( thread
);
1461 release_object( thread
);
1465 /* resume a thread */
1466 DECL_HANDLER(resume_thread
)
1468 struct thread
*thread
;
1470 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
)))
1472 reply
->count
= resume_thread( thread
);
1473 release_object( thread
);
1477 /* select on a handle list */
1478 DECL_HANDLER(select
)
1480 select_op_t select_op
;
1481 data_size_t op_size
;
1482 struct thread_apc
*apc
;
1483 const apc_result_t
*result
= get_req_data();
1485 if (get_req_data_size() < sizeof(*result
))
1487 set_error( STATUS_INVALID_PARAMETER
);
1492 set_error( STATUS_INVALID_PARAMETER
);
1496 op_size
= min( get_req_data_size() - sizeof(*result
), sizeof(select_op
) );
1497 memset( &select_op
, 0, sizeof(select_op
) );
1498 memcpy( &select_op
, result
+ 1, op_size
);
1500 /* first store results of previous apc */
1503 if (!(apc
= (struct thread_apc
*)get_handle_obj( current
->process
, req
->prev_apc
,
1504 0, &thread_apc_ops
))) return;
1505 apc
->result
= *result
;
1507 if (apc
->result
.type
== APC_CREATE_THREAD
) /* transfer the handle to the caller process */
1509 obj_handle_t handle
= duplicate_handle( current
->process
, apc
->result
.create_thread
.handle
,
1510 apc
->caller
->process
, 0, 0, DUP_HANDLE_SAME_ACCESS
);
1511 close_handle( current
->process
, apc
->result
.create_thread
.handle
);
1512 apc
->result
.create_thread
.handle
= handle
;
1513 clear_error(); /* ignore errors from the above calls */
1515 else if (apc
->result
.type
== APC_ASYNC_IO
)
1518 async_set_result( apc
->owner
, apc
->result
.async_io
.status
, apc
->result
.async_io
.total
,
1519 apc
->result
.async_io
.apc
, apc
->result
.async_io
.arg
);
1521 wake_up( &apc
->obj
, 0 );
1522 close_handle( current
->process
, req
->prev_apc
);
1523 release_object( apc
);
1526 reply
->timeout
= select_on( &select_op
, op_size
, req
->cookie
, req
->flags
, req
->timeout
);
1528 if (get_error() == STATUS_USER_APC
)
1532 if (!(apc
= thread_dequeue_apc( current
, !(req
->flags
& SELECT_ALERTABLE
) )))
1534 /* Optimization: ignore APC_NONE calls, they are only used to
1535 * wake up a thread, but since we got here the thread woke up already.
1537 if (apc
->call
.type
!= APC_NONE
&&
1538 (reply
->apc_handle
= alloc_handle( current
->process
, apc
, SYNCHRONIZE
, 0 )))
1540 reply
->call
= apc
->call
;
1541 release_object( apc
);
1545 wake_up( &apc
->obj
, 0 );
1546 release_object( apc
);
1551 /* queue an APC for a thread or process */
1552 DECL_HANDLER(queue_apc
)
1554 struct thread
*thread
= NULL
;
1555 struct process
*process
= NULL
;
1556 struct thread_apc
*apc
;
1558 if (!(apc
= create_apc( NULL
, &req
->call
))) return;
1560 switch (apc
->call
.type
)
1564 thread
= get_thread_from_handle( req
->handle
, THREAD_SET_CONTEXT
);
1566 case APC_VIRTUAL_ALLOC
:
1567 case APC_VIRTUAL_FREE
:
1568 case APC_VIRTUAL_PROTECT
:
1569 case APC_VIRTUAL_FLUSH
:
1570 case APC_VIRTUAL_LOCK
:
1571 case APC_VIRTUAL_UNLOCK
:
1572 case APC_UNMAP_VIEW
:
1573 process
= get_process_from_handle( req
->handle
, PROCESS_VM_OPERATION
);
1575 case APC_VIRTUAL_QUERY
:
1576 process
= get_process_from_handle( req
->handle
, PROCESS_QUERY_INFORMATION
);
1579 process
= get_process_from_handle( req
->handle
, PROCESS_VM_OPERATION
);
1580 if (process
&& process
!= current
->process
)
1582 /* duplicate the handle into the target process */
1583 obj_handle_t handle
= duplicate_handle( current
->process
, apc
->call
.map_view
.handle
,
1584 process
, 0, 0, DUP_HANDLE_SAME_ACCESS
);
1585 if (handle
) apc
->call
.map_view
.handle
= handle
;
1588 release_object( process
);
1593 case APC_CREATE_THREAD
:
1594 process
= get_process_from_handle( req
->handle
, PROCESS_CREATE_THREAD
);
1597 set_error( STATUS_INVALID_PARAMETER
);
1603 if (!queue_apc( NULL
, thread
, apc
)) set_error( STATUS_THREAD_IS_TERMINATING
);
1604 release_object( thread
);
1608 reply
->self
= (process
== current
->process
);
1611 obj_handle_t handle
= alloc_handle( current
->process
, apc
, SYNCHRONIZE
, 0 );
1614 if (queue_apc( process
, NULL
, apc
))
1616 apc
->caller
= (struct thread
*)grab_object( current
);
1617 reply
->handle
= handle
;
1621 close_handle( current
->process
, handle
);
1622 set_error( STATUS_PROCESS_IS_TERMINATING
);
1626 release_object( process
);
1629 release_object( apc
);
1632 /* Get the result of an APC call */
1633 DECL_HANDLER(get_apc_result
)
1635 struct thread_apc
*apc
;
1637 if (!(apc
= (struct thread_apc
*)get_handle_obj( current
->process
, req
->handle
,
1638 0, &thread_apc_ops
))) return;
1640 if (apc
->executed
) reply
->result
= apc
->result
;
1641 else set_error( STATUS_PENDING
);
1643 /* close the handle directly to avoid an extra round-trip */
1644 close_handle( current
->process
, req
->handle
);
1645 release_object( apc
);
1648 /* retrieve the current context of a thread */
1649 DECL_HANDLER(get_thread_context
)
1651 struct thread
*thread
;
1654 if (get_reply_max_size() < sizeof(context_t
))
1656 set_error( STATUS_INVALID_PARAMETER
);
1659 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_GET_CONTEXT
))) return;
1660 reply
->self
= (thread
== current
);
1662 if (thread
!= current
&& !thread
->context
)
1664 /* thread is not suspended, retry (if it's still running) */
1665 if (thread
->state
== RUNNING
)
1667 set_error( STATUS_PENDING
);
1670 release_object( thread
);
1671 /* make sure we have suspend access */
1672 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
))) return;
1673 suspend_thread( thread
);
1676 else set_error( STATUS_UNSUCCESSFUL
);
1678 else if ((context
= set_reply_data_size( sizeof(context_t
) )))
1680 unsigned int flags
= get_context_system_regs( thread
->process
->cpu
);
1682 memset( context
, 0, sizeof(context_t
) );
1683 context
->cpu
= thread
->process
->cpu
;
1684 if (thread
->context
) copy_context( context
, thread
->context
, req
->flags
& ~flags
);
1685 if (flags
) get_thread_context( thread
, context
, flags
);
1687 release_object( thread
);
1690 /* set the current context of a thread */
1691 DECL_HANDLER(set_thread_context
)
1693 struct thread
*thread
;
1694 const context_t
*context
= get_req_data();
1696 if (get_req_data_size() < sizeof(context_t
))
1698 set_error( STATUS_INVALID_PARAMETER
);
1701 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SET_CONTEXT
))) return;
1702 reply
->self
= (thread
== current
);
1704 if (thread
!= current
&& !thread
->context
)
1706 /* thread is not suspended, retry (if it's still running) */
1707 if (thread
->state
== RUNNING
)
1709 set_error( STATUS_PENDING
);
1712 release_object( thread
);
1713 /* make sure we have suspend access */
1714 if (!(thread
= get_thread_from_handle( req
->handle
, THREAD_SUSPEND_RESUME
))) return;
1715 suspend_thread( thread
);
1718 else set_error( STATUS_UNSUCCESSFUL
);
1720 else if (context
->cpu
== thread
->process
->cpu
)
1722 unsigned int system_flags
= get_context_system_regs(context
->cpu
) & context
->flags
;
1723 unsigned int client_flags
= context
->flags
& ~system_flags
;
1725 if (system_flags
) set_thread_context( thread
, context
, system_flags
);
1726 if (thread
->context
&& !get_error()) copy_context( thread
->context
, context
, client_flags
);
1728 else set_error( STATUS_INVALID_PARAMETER
);
1730 release_object( thread
);
1733 /* retrieve the suspended context of a thread */
1734 DECL_HANDLER(get_suspend_context
)
1736 if (get_reply_max_size() < sizeof(context_t
))
1738 set_error( STATUS_INVALID_PARAMETER
);
1742 if (current
->suspend_context
)
1744 set_reply_data_ptr( current
->suspend_context
, sizeof(context_t
) );
1745 if (current
->context
== current
->suspend_context
)
1747 current
->context
= NULL
;
1748 stop_thread_if_suspended( current
);
1750 current
->suspend_context
= NULL
;
1752 else set_error( STATUS_INVALID_PARAMETER
); /* not suspended, shouldn't happen */
1755 /* store the suspended context of a thread */
1756 DECL_HANDLER(set_suspend_context
)
1758 const context_t
*context
= get_req_data();
1760 if (get_req_data_size() < sizeof(context_t
))
1762 set_error( STATUS_INVALID_PARAMETER
);
1766 if (current
->context
|| context
->cpu
!= current
->process
->cpu
)
1768 /* nested suspend or exception, shouldn't happen */
1769 set_error( STATUS_INVALID_PARAMETER
);
1771 else if ((current
->suspend_context
= mem_alloc( sizeof(context_t
) )))
1773 memcpy( current
->suspend_context
, get_req_data(), sizeof(context_t
) );
1774 current
->context
= current
->suspend_context
;
1775 if (current
->debug_break
) break_thread( current
);
1779 /* fetch a selector entry for a thread */
1780 DECL_HANDLER(get_selector_entry
)
1782 struct thread
*thread
;
1783 if ((thread
= get_thread_from_handle( req
->handle
, THREAD_QUERY_INFORMATION
)))
1785 get_selector_entry( thread
, req
->entry
, &reply
->base
, &reply
->limit
, &reply
->flags
);
1786 release_object( thread
);