2 * Server-side process management
4 * Copyright (C) 1998 Alexandre Julliard
17 #ifdef HAVE_SYS_SOCKET_H
18 # include <sys/socket.h>
30 /* process structure */
32 static struct process *first_process;
33 static int running_processes;
35 /* process operations */
37 static void process_dump( struct object *obj, int verbose );
38 static int process_signaled( struct object *obj, struct thread *thread );
39 static void process_destroy( struct object *obj );
41 static const struct object_ops process_ops =
43 sizeof(struct process), /* size */
44 process_dump, /* dump */
45 add_queue, /* add_queue */
46 remove_queue, /* remove_queue */
47 process_signaled, /* signaled */
48 no_satisfied, /* satisfied */
49 NULL, /* get_poll_events */
50 NULL, /* poll_event */
51 no_read_fd, /* get_read_fd */
52 no_write_fd, /* get_write_fd */
54 no_get_file_info, /* get_file_info */
55 process_destroy /* destroy */
58 /* process startup info */
62 struct object obj; /* object header */
63 int inherit_all; /* inherit all handles from parent */
64 int create_flags; /* creation flags */
65 int start_flags; /* flags from startup info */
66 int hstdin; /* handle for stdin */
67 int hstdout; /* handle for stdout */
68 int hstderr; /* handle for stderr */
69 int cmd_show; /* main window show mode */
70 struct file *exe_file; /* file handle for main exe */
71 char *filename; /* file name for main exe */
72 struct process *process; /* created process */
73 struct thread *thread; /* created thread */
76 static void startup_info_dump( struct object *obj, int verbose );
77 static int startup_info_signaled( struct object *obj, struct thread *thread );
78 static void startup_info_destroy( struct object *obj );
80 static const struct object_ops startup_info_ops =
82 sizeof(struct startup_info), /* size */
83 startup_info_dump, /* dump */
84 add_queue, /* add_queue */
85 remove_queue, /* remove_queue */
86 startup_info_signaled, /* signaled */
87 no_satisfied, /* satisfied */
88 NULL, /* get_poll_events */
89 NULL, /* poll_event */
90 no_read_fd, /* get_read_fd */
91 no_write_fd, /* get_write_fd */
93 no_get_file_info, /* get_file_info */
94 startup_info_destroy /* destroy */
98 /* set the console and stdio handles for a newly created process */
99 static int set_process_console( struct process *process, struct process *parent,
100 struct startup_info *info, struct init_process_request *req )
102 if (process->create_flags & CREATE_NEW_CONSOLE)
104 if (!alloc_console( process )) return 0;
106 else if (parent && !(process->create_flags & DETACHED_PROCESS))
108 if (parent->console_in) process->console_in = grab_object( parent->console_in );
109 if (parent->console_out) process->console_out = grab_object( parent->console_out );
113 if (!info->inherit_all && !(info->start_flags & STARTF_USESTDHANDLES))
115 /* duplicate the handle from the parent into this process */
116 req->hstdin = duplicate_handle( parent, info->hstdin, process,
117 0, TRUE, DUPLICATE_SAME_ACCESS );
118 req->hstdout = duplicate_handle( parent, info->hstdout, process,
119 0, TRUE, DUPLICATE_SAME_ACCESS );
120 req->hstderr = duplicate_handle( parent, info->hstderr, process,
121 0, TRUE, DUPLICATE_SAME_ACCESS );
125 req->hstdin = info->hstdin;
126 req->hstdout = info->hstdout;
127 req->hstderr = info->hstderr;
132 /* no parent, use handles to the console for stdio */
133 req->hstdin = alloc_handle( process, process->console_in,
134 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
135 req->hstdout = alloc_handle( process, process->console_out,
136 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
137 req->hstderr = alloc_handle( process, process->console_out,
138 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, 1 );
140 /* some handles above may have been invalid; this is not an error */
141 if (get_error() == STATUS_INVALID_HANDLE) clear_error();
145 /* create a new process and its main thread */
146 struct thread *create_process( int fd )
148 struct process *process;
149 struct thread *thread = NULL;
151 if (!(process = alloc_object( &process_ops, -1 )))
156 process->next = NULL;
157 process->prev = NULL;
158 process->thread_list = NULL;
159 process->debugger = NULL;
160 process->handles = NULL;
161 process->exit_code = STILL_ACTIVE;
162 process->running_threads = 0;
163 process->priority = NORMAL_PRIORITY_CLASS;
164 process->affinity = 1;
165 process->suspend = 0;
166 process->create_flags = 0;
167 process->console_in = NULL;
168 process->console_out = NULL;
169 process->init_event = NULL;
170 process->idle_event = NULL;
171 process->queue = NULL;
172 process->atom_table = NULL;
173 process->ldt_copy = NULL;
174 process->ldt_flags = NULL;
175 process->exe.next = NULL;
176 process->exe.prev = NULL;
177 process->exe.file = NULL;
178 process->exe.dbg_offset = 0;
179 process->exe.dbg_size = 0;
180 gettimeofday( &process->start_time, NULL );
181 if ((process->next = first_process) != NULL) process->next->prev = process;
182 first_process = process;
184 /* create the main thread */
185 if (!(thread = create_thread( fd, process ))) goto error;
187 /* create the init done event */
188 if (!(process->init_event = create_event( NULL, 0, 1, 0 ))) goto error;
190 add_process_thread( process, thread );
191 release_object( process );
195 if (thread) release_object( thread );
196 release_object( process );
200 /* initialize the current process and fill in the request */
201 static void init_process( int ppid, struct init_process_request *req )
203 struct process *process = current->process;
204 struct thread *parent_thread = get_thread_from_pid( ppid );
205 struct process *parent = NULL;
206 struct startup_info *info = NULL;
210 parent = parent_thread->process;
211 info = parent_thread->info;
214 fatal_protocol_error( current, "init_process: parent but no info\n" );
219 fatal_protocol_error( current, "init_process: called twice?\n" );
224 /* set the process flags */
225 process->create_flags = info ? info->create_flags : CREATE_NEW_CONSOLE;
227 /* create the handle table */
228 if (parent && info->inherit_all == 2) /* HACK! */
229 process->handles = grab_object( parent->handles );
230 else if (parent && info->inherit_all)
231 process->handles = copy_handle_table( process, parent );
233 process->handles = alloc_handle_table( process, 0 );
234 if (!process->handles) goto error;
236 /* retrieve the main exe file */
238 if (parent && info->exe_file)
240 process->exe.file = (struct file *)grab_object( info->exe_file );
241 if ((req->exe_file = alloc_handle( process, process->exe.file, GENERIC_READ, 0 )) == -1)
245 /* set the process console */
246 if (!set_process_console( process, parent, info, req )) goto error;
250 /* attach to the debugger if requested */
251 if (process->create_flags & (DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS))
252 set_process_debugger( process, parent_thread );
253 else if (parent && parent->debugger && !(parent->create_flags & DEBUG_ONLY_THIS_PROCESS))
254 set_process_debugger( process, parent->debugger );
257 /* thread will be actually suspended in init_done */
258 if (process->create_flags & CREATE_SUSPENDED) current->suspend++;
262 req->start_flags = info->start_flags;
263 req->cmd_show = info->cmd_show;
264 strcpy( req->filename, info->filename );
265 info->process = (struct process *)grab_object( process );
266 info->thread = (struct thread *)grab_object( current );
267 wake_up( &info->obj, 0 );
271 req->start_flags = STARTF_USESTDHANDLES;
273 req->filename[0] = 0;
278 /* destroy a process when its refcount is 0 */
279 static void process_destroy( struct object *obj )
281 struct process *process = (struct process *)obj;
282 assert( obj->ops == &process_ops );
284 /* we can't have a thread remaining */
285 assert( !process->thread_list );
286 if (process->next) process->next->prev = process->prev;
287 if (process->prev) process->prev->next = process->next;
288 else first_process = process->next;
289 if (process->init_event) release_object( process->init_event );
290 if (process->idle_event) release_object( process->idle_event );
291 if (process->queue) release_object( process->queue );
292 if (process->atom_table) release_object( process->atom_table );
293 if (process->exe.file) release_object( process->exe.file );
296 /* dump a process on stdout for debugging purposes */
297 static void process_dump( struct object *obj, int verbose )
299 struct process *process = (struct process *)obj;
300 assert( obj->ops == &process_ops );
302 fprintf( stderr, "Process next=%p prev=%p console=%p/%p handles=%p\n",
303 process->next, process->prev, process->console_in, process->console_out,
307 static int process_signaled( struct object *obj, struct thread *thread )
309 struct process *process = (struct process *)obj;
310 return !process->running_threads;
314 static void startup_info_destroy( struct object *obj )
316 struct startup_info *info = (struct startup_info *)obj;
317 assert( obj->ops == &startup_info_ops );
318 if (info->filename) free( info->filename );
319 if (info->exe_file) release_object( info->exe_file );
320 if (info->process) release_object( info->process );
321 if (info->thread) release_object( info->thread );
324 static void startup_info_dump( struct object *obj, int verbose )
326 struct startup_info *info = (struct startup_info *)obj;
327 assert( obj->ops == &startup_info_ops );
329 fprintf( stderr, "Startup info flags=%x in=%d out=%d err=%d name='%s'\n",
330 info->start_flags, info->hstdin, info->hstdout, info->hstderr, info->filename );
333 static int startup_info_signaled( struct object *obj, struct thread *thread )
335 struct startup_info *info = (struct startup_info *)obj;
336 return (info->thread != NULL);
340 /* build a reply for the wait_process request */
341 static void build_wait_process_reply( struct thread *thread, struct object *obj, int signaled )
343 struct wait_process_request *req = get_req_ptr( thread );
346 struct startup_info *info = (struct startup_info *)obj;
347 assert( obj->ops == &startup_info_ops );
349 req->pid = get_process_id( info->process );
350 req->tid = get_thread_id( info->thread );
351 req->phandle = alloc_handle( thread->process, info->process,
352 PROCESS_ALL_ACCESS, req->pinherit );
353 req->thandle = alloc_handle( thread->process, info->thread,
354 THREAD_ALL_ACCESS, req->tinherit );
355 if (info->process->init_event)
356 req->event = alloc_handle( thread->process, info->process->init_event,
357 EVENT_ALL_ACCESS, 0 );
361 /* FIXME: set_error */
363 release_object( thread->info );
367 /* get a process from an id (and increment the refcount) */
368 struct process *get_process_from_id( void *id )
370 struct process *p = first_process;
371 while (p && (p != id)) p = p->next;
372 if (p) grab_object( p );
373 else set_error( STATUS_INVALID_PARAMETER );
377 /* get a process from a handle (and increment the refcount) */
378 struct process *get_process_from_handle( int handle, unsigned int access )
380 return (struct process *)get_handle_obj( current->process, handle,
381 access, &process_ops );
384 /* add a dll to a process list */
385 static struct process_dll *process_load_dll( struct process *process, struct file *file,
388 struct process_dll *dll;
390 /* make sure we don't already have one with the same base address */
391 for (dll = process->exe.next; dll; dll = dll->next) if (dll->base == base)
393 set_error( STATUS_INVALID_PARAMETER );
397 if ((dll = mem_alloc( sizeof(*dll) )))
399 dll->prev = &process->exe;
402 if (file) dll->file = (struct file *)grab_object( file );
403 if ((dll->next = process->exe.next)) dll->next->prev = dll;
404 process->exe.next = dll;
409 /* remove a dll from a process list */
410 static void process_unload_dll( struct process *process, void *base )
412 struct process_dll *dll;
414 for (dll = process->exe.next; dll; dll = dll->next)
416 if (dll->base == base)
418 if (dll->file) release_object( dll->file );
419 if (dll->next) dll->next->prev = dll->prev;
420 if (dll->prev) dll->prev->next = dll->next;
422 generate_debug_event( current, UNLOAD_DLL_DEBUG_EVENT, base );
426 set_error( STATUS_INVALID_PARAMETER );
429 /* a process has been killed (i.e. its last thread died) */
430 static void process_killed( struct process *process )
432 assert( !process->thread_list );
433 gettimeofday( &process->end_time, NULL );
434 if (process->handles) release_object( process->handles );
435 process->handles = NULL;
436 free_console( process );
437 while (process->exe.next)
439 struct process_dll *dll = process->exe.next;
440 process->exe.next = dll->next;
441 if (dll->file) release_object( dll->file );
444 if (process->exe.file) release_object( process->exe.file );
445 process->exe.file = NULL;
446 wake_up( &process->obj, 0 );
447 if (!--running_processes)
449 /* last process died, close global handles */
450 close_global_handles();
451 /* this will cause the select loop to terminate */
452 if (!persistent_server) close_master_socket();
456 /* add a thread to a process running threads list */
457 void add_process_thread( struct process *process, struct thread *thread )
459 thread->proc_next = process->thread_list;
460 thread->proc_prev = NULL;
461 if (thread->proc_next) thread->proc_next->proc_prev = thread;
462 process->thread_list = thread;
463 if (!process->running_threads++) running_processes++;
464 grab_object( thread );
467 /* remove a thread from a process running threads list */
468 void remove_process_thread( struct process *process, struct thread *thread )
470 assert( process->running_threads > 0 );
471 assert( process->thread_list );
473 if (thread->proc_next) thread->proc_next->proc_prev = thread->proc_prev;
474 if (thread->proc_prev) thread->proc_prev->proc_next = thread->proc_next;
475 else process->thread_list = thread->proc_next;
477 if (!--process->running_threads)
479 /* we have removed the last running thread, exit the process */
480 process->exit_code = thread->exit_code;
481 generate_debug_event( thread, EXIT_PROCESS_DEBUG_EVENT, process );
482 process_killed( process );
484 else generate_debug_event( thread, EXIT_THREAD_DEBUG_EVENT, thread );
485 release_object( thread );
488 /* suspend all the threads of a process */
489 void suspend_process( struct process *process )
491 if (!process->suspend++)
493 struct thread *thread = process->thread_list;
494 for (; thread; thread = thread->proc_next)
496 if (!thread->suspend) stop_thread( thread );
501 /* resume all the threads of a process */
502 void resume_process( struct process *process )
504 assert (process->suspend > 0);
505 if (!--process->suspend)
507 struct thread *thread = process->thread_list;
508 for (; thread; thread = thread->proc_next)
510 if (!thread->suspend) continue_thread( thread );
515 /* kill a process on the spot */
516 static void kill_process( struct process *process, struct thread *skip, int exit_code )
518 struct thread *thread = process->thread_list;
521 struct thread *next = thread->proc_next;
522 thread->exit_code = exit_code;
523 if (thread != skip) kill_thread( thread, 1 );
528 /* kill all processes being debugged by a given thread */
529 void kill_debugged_processes( struct thread *debugger, int exit_code )
531 for (;;) /* restart from the beginning of the list every time */
533 struct process *process = first_process;
534 /* find the first process being debugged by 'debugger' and still running */
535 while (process && (process->debugger != debugger || !process->running_threads))
536 process = process->next;
537 if (!process) return;
538 process->debugger = NULL;
539 kill_process( process, NULL, exit_code );
543 /* get all information about a process */
544 static void get_process_info( struct process *process, struct get_process_info_request *req )
547 req->debugged = (process->debugger != 0);
548 req->exit_code = process->exit_code;
549 req->priority = process->priority;
550 req->process_affinity = process->affinity;
551 req->system_affinity = 1;
554 /* set all information about a process */
555 static void set_process_info( struct process *process,
556 struct set_process_info_request *req )
558 if (req->mask & SET_PROCESS_INFO_PRIORITY)
559 process->priority = req->priority;
560 if (req->mask & SET_PROCESS_INFO_AFFINITY)
562 if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
563 else process->affinity = req->affinity;
567 /* read data from a process memory space */
568 /* len is the total size (in ints), max is the size we can actually store in the output buffer */
569 /* we read the total size in all cases to check for permissions */
570 static void read_process_memory( struct process *process, const int *addr,
571 size_t len, size_t max, int *dest )
573 struct thread *thread = process->thread_list;
575 if ((unsigned int)addr % sizeof(int)) /* address must be aligned */
577 set_error( STATUS_INVALID_PARAMETER );
580 if (!thread) /* process is dead */
582 set_error( STATUS_ACCESS_DENIED );
585 if (suspend_for_ptrace( thread ))
587 while (len > 0 && max)
589 if (read_thread_int( thread, addr++, dest++ ) == -1) goto done;
593 /* check the rest for read permission */
596 int dummy, page = get_page_size() / sizeof(int);
601 if (read_thread_int( thread, addr - 1, &dummy ) == -1) goto done;
603 if (len && (read_thread_int( thread, addr + len - 1, &dummy ) == -1)) goto done;
606 resume_thread( thread );
610 /* write data to a process memory space */
611 /* len is the total size (in ints), max is the size we can actually read from the input buffer */
612 /* we check the total size for write permissions */
613 static void write_process_memory( struct process *process, int *addr, size_t len,
614 size_t max, unsigned int first_mask,
615 unsigned int last_mask, const int *src )
617 struct thread *thread = process->thread_list;
619 if (!len || ((unsigned int)addr % sizeof(int))) /* address must be aligned */
621 set_error( STATUS_INVALID_PARAMETER );
624 if (!thread) /* process is dead */
626 set_error( STATUS_ACCESS_DENIED );
629 if (suspend_for_ptrace( thread ))
631 /* first word is special */
634 if (write_thread_int( thread, addr++, *src++, first_mask ) == -1) goto done;
638 else last_mask &= first_mask;
640 while (len > 1 && max)
642 if (write_thread_int( thread, addr++, *src++, ~0 ) == -1) goto done;
649 /* last word is special too */
650 if (write_thread_int( thread, addr, *src, last_mask ) == -1) goto done;
654 /* check the rest for write permission */
655 int page = get_page_size() / sizeof(int);
660 if (write_thread_int( thread, addr - 1, 0, 0 ) == -1) goto done;
662 if (len && (write_thread_int( thread, addr + len - 1, 0, 0 ) == -1)) goto done;
665 resume_thread( thread );
669 /* take a snapshot of currently running processes */
670 struct process_snapshot *process_snap( int *count )
672 struct process_snapshot *snapshot, *ptr;
673 struct process *process;
674 if (!running_processes) return NULL;
675 if (!(snapshot = mem_alloc( sizeof(*snapshot) * running_processes )))
678 for (process = first_process; process; process = process->next)
680 if (!process->running_threads) continue;
681 ptr->process = process;
682 ptr->threads = process->running_threads;
683 ptr->count = process->obj.refcount;
684 ptr->priority = process->priority;
685 grab_object( process );
688 *count = running_processes;
692 /* take a snapshot of the modules of a process */
693 struct module_snapshot *module_snap( struct process *process, int *count )
695 struct module_snapshot *snapshot, *ptr;
696 struct process_dll *dll;
699 for (dll = &process->exe; dll; dll = dll->next) total++;
700 if (!(snapshot = mem_alloc( sizeof(*snapshot) * total ))) return NULL;
702 for (ptr = snapshot, dll = &process->exe; dll; dll = dll->next, ptr++)
704 ptr->base = dll->base;
711 /* create a new process */
712 DECL_HANDLER(new_process)
714 size_t len = get_req_strlen( req, req->filename );
715 struct startup_info *info;
720 fatal_protocol_error( current, "new_process: another process is being created\n" );
724 /* build the startup info for a new process */
725 if (!(info = alloc_object( &startup_info_ops, -1 ))) return;
726 info->inherit_all = req->inherit_all;
727 info->create_flags = req->create_flags;
728 info->start_flags = req->start_flags;
729 info->hstdin = req->hstdin;
730 info->hstdout = req->hstdout;
731 info->hstderr = req->hstderr;
732 info->cmd_show = req->cmd_show;
733 info->exe_file = NULL;
734 info->filename = NULL;
735 info->process = NULL;
738 if ((req->exe_file != -1) &&
739 !(info->exe_file = get_file_obj( current->process, req->exe_file, GENERIC_READ )))
741 release_object( info );
745 if (!(info->filename = memdup( req->filename, len+1 )))
747 release_object( info );
750 info->filename[len] = 0;
754 if (socketpair( AF_UNIX, SOCK_STREAM, 0, sock ) == -1)
757 release_object( info );
760 if (!create_process( sock[0] ))
762 release_object( info );
766 /* thread object will be released when the thread gets killed */
767 set_reply_fd( current, sock[1] );
769 current->info = info;
772 /* Wait for the new process to start */
773 DECL_HANDLER(wait_process)
777 fatal_protocol_error( current, "wait_process: no process is being created\n" );
787 release_object( current->info );
788 current->info = NULL;
792 struct object *obj = ¤t->info->obj;
793 sleep_on( 1, &obj, SELECT_TIMEOUT, req->timeout, build_wait_process_reply );
797 /* initialize a new process */
798 DECL_HANDLER(init_process)
800 if (!current->unix_pid)
802 fatal_protocol_error( current, "init_process: init_thread not called yet\n" );
805 current->process->ldt_copy = req->ldt_copy;
806 current->process->ldt_flags = req->ldt_flags;
807 init_process( req->ppid, req );
810 /* signal the end of the process initialization */
811 DECL_HANDLER(init_process_done)
813 struct process *process = current->process;
814 if (!process->init_event)
816 fatal_protocol_error( current, "init_process_done: no event\n" );
819 process->exe.base = req->module;
820 process->exe.name = req->name;
821 generate_startup_debug_events( current->process, req->entry );
822 set_event( process->init_event );
823 release_object( process->init_event );
824 process->init_event = NULL;
825 if (req->gui) process->idle_event = create_event( NULL, 0, 1, 0 );
826 if (current->suspend + current->process->suspend > 0) stop_thread( current );
827 req->debugged = (current->process->debugger != 0);
830 /* open a handle to a process */
831 DECL_HANDLER(open_process)
833 struct process *process = get_process_from_id( req->pid );
837 req->handle = alloc_handle( current->process, process, req->access, req->inherit );
838 release_object( process );
842 /* terminate a process */
843 DECL_HANDLER(terminate_process)
845 struct process *process;
847 if ((process = get_process_from_handle( req->handle, PROCESS_TERMINATE )))
849 req->self = (current->process == process);
850 kill_process( process, current, req->exit_code );
851 release_object( process );
855 /* fetch information about a process */
856 DECL_HANDLER(get_process_info)
858 struct process *process;
860 if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
862 get_process_info( process, req );
863 release_object( process );
867 /* set information about a process */
868 DECL_HANDLER(set_process_info)
870 struct process *process;
872 if ((process = get_process_from_handle( req->handle, PROCESS_SET_INFORMATION )))
874 set_process_info( process, req );
875 release_object( process );
879 /* read data from a process address space */
880 DECL_HANDLER(read_process_memory)
882 struct process *process;
884 if ((process = get_process_from_handle( req->handle, PROCESS_VM_READ )))
886 read_process_memory( process, req->addr, req->len,
887 get_req_size( req, req->data, sizeof(int) ), req->data );
888 release_object( process );
892 /* write data to a process address space */
893 DECL_HANDLER(write_process_memory)
895 struct process *process;
897 if ((process = get_process_from_handle( req->handle, PROCESS_VM_WRITE )))
899 write_process_memory( process, req->addr, req->len,
900 get_req_size( req, req->data, sizeof(int) ),
901 req->first_mask, req->last_mask, req->data );
902 release_object( process );
906 /* notify the server that a dll has been loaded */
907 DECL_HANDLER(load_dll)
909 struct process_dll *dll;
910 struct file *file = NULL;
912 if ((req->handle != -1) &&
913 !(file = get_file_obj( current->process, req->handle, GENERIC_READ ))) return;
915 if ((dll = process_load_dll( current->process, file, req->base )))
917 dll->dbg_offset = req->dbg_offset;
918 dll->dbg_size = req->dbg_size;
919 dll->name = req->name;
920 /* only generate event if initialization is done */
921 if (!current->process->init_event)
922 generate_debug_event( current, LOAD_DLL_DEBUG_EVENT, dll );
924 if (file) release_object( file );
927 /* notify the server that a dll is being unloaded */
928 DECL_HANDLER(unload_dll)
930 process_unload_dll( current->process, req->base );
933 /* wait for a process to start waiting on input */
934 /* FIXME: only returns event for now, wait is done in the client */
935 DECL_HANDLER(wait_input_idle)
937 struct process *process;
940 if ((process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION )))
942 if (process->idle_event && process != current->process && process->queue != current->queue)
943 req->event = alloc_handle( current->process, process->idle_event,
944 EVENT_ALL_ACCESS, 0 );
945 release_object( process );