*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#ifdef HAVE_POLL_H
#include <poll.h>
#endif
+#ifdef HAVE_SCHED_H
+#include <sched.h>
+#endif
+#include "ntstatus.h"
+#define WIN32_NO_STATUS
#include "windef.h"
-#include "winbase.h"
+#include "winternl.h"
#include "file.h"
#include "handle.h"
#include "thread.h"
#include "request.h"
#include "user.h"
-
+#include "security.h"
+
+
+#define CPU_FLAG(cpu) (1 << (cpu))
+#ifdef __i386__
+static const unsigned int supported_cpus = CPU_FLAG(CPU_x86);
+#elif defined(__x86_64__)
+static const unsigned int supported_cpus = CPU_FLAG(CPU_x86_64) | CPU_FLAG(CPU_x86);
+#elif defined(__ALPHA__)
+static const unsigned int supported_cpus = CPU_FLAG(CPU_ALPHA);
+#elif defined(__powerpc__)
+static const unsigned int supported_cpus = CPU_FLAG(CPU_POWERPC);
+#elif defined(__sparc__)
+static const unsigned int supported_cpus = CPU_FLAG(CPU_SPARC);
+#else
+#error Unsupported CPU
+#endif
+#define CPU_64BIT_MASK CPU_FLAG(CPU_x86_64)
/* thread queues */
struct thread *thread; /* owner thread */
int count; /* count of objects */
int flags;
- void *cookie; /* magic cookie to return to client */
- struct timeval timeout;
+ client_ptr_t cookie; /* magic cookie to return to client */
+ timeout_t timeout;
struct timeout_user *user;
struct wait_queue_entry queues[1];
};
struct thread_apc
{
+ struct object obj; /* object header */
struct list entry; /* queue linked list */
+ struct thread *caller; /* thread that queued this apc */
struct object *owner; /* object that queued this apc */
- void *func; /* function to call in client */
- enum apc_type type; /* type of apc function */
- int nb_args; /* number of arguments */
- void *arg1; /* function arguments */
- void *arg2;
- void *arg3;
+ int executed; /* has it been executed by the client? */
+ apc_call_t call; /* call arguments */
+ apc_result_t result; /* call results once executed */
+};
+
+static void dump_thread_apc( struct object *obj, int verbose );
+static int thread_apc_signaled( struct object *obj, struct thread *thread );
+static void thread_apc_destroy( struct object *obj );
+static void clear_apc_queue( struct list *queue );
+
+static const struct object_ops thread_apc_ops =
+{
+ sizeof(struct thread_apc), /* size */
+ dump_thread_apc, /* dump */
+ no_get_type, /* get_type */
+ add_queue, /* add_queue */
+ remove_queue, /* remove_queue */
+ thread_apc_signaled, /* signaled */
+ no_satisfied, /* satisfied */
+ no_signal, /* signal */
+ no_get_fd, /* get_fd */
+ no_map_access, /* map_access */
+ default_get_sd, /* get_sd */
+ default_set_sd, /* set_sd */
+ no_lookup_name, /* lookup_name */
+ no_open_file, /* open_file */
+ no_close_handle, /* close_handle */
+ thread_apc_destroy /* destroy */
};
static void dump_thread( struct object *obj, int verbose );
static int thread_signaled( struct object *obj, struct thread *thread );
+static unsigned int thread_map_access( struct object *obj, unsigned int access );
static void thread_poll_event( struct fd *fd, int event );
static void destroy_thread( struct object *obj );
-static struct thread_apc *thread_dequeue_apc( struct thread *thread, int system_only );
static const struct object_ops thread_ops =
{
sizeof(struct thread), /* size */
dump_thread, /* dump */
+ no_get_type, /* get_type */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
thread_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
+ thread_map_access, /* map_access */
+ default_get_sd, /* get_sd */
+ default_set_sd, /* set_sd */
+ no_lookup_name, /* lookup_name */
+ no_open_file, /* open_file */
no_close_handle, /* close_handle */
destroy_thread /* destroy */
};
{
NULL, /* get_poll_events */
thread_poll_event, /* poll_event */
- no_flush, /* flush */
- no_get_file_info, /* get_file_info */
- no_queue_async, /* queue_async */
- no_cancel_async /* cancel_async */
+ NULL, /* flush */
+ NULL, /* get_fd_type */
+ NULL, /* ioctl */
+ NULL, /* queue_async */
+ NULL, /* reselect_async */
+ NULL /* cancel_async */
};
static struct list thread_list = LIST_INIT(thread_list);
-static struct thread *booting_thread;
/* initialize the structure for a newly allocated thread */
-inline static void init_thread_structure( struct thread *thread )
+static inline void init_thread_structure( struct thread *thread )
{
int i;
thread->unix_pid = -1; /* not known yet */
thread->unix_tid = -1; /* not known yet */
thread->context = NULL;
- thread->teb = NULL;
+ thread->suspend_context = NULL;
+ thread->teb = 0;
thread->debug_ctx = NULL;
thread->debug_event = NULL;
+ thread->debug_break = 0;
thread->queue = NULL;
thread->wait = NULL;
thread->error = 0;
thread->reply_fd = NULL;
thread->wait_fd = NULL;
thread->state = RUNNING;
- thread->attached = 0;
thread->exit_code = 0;
- thread->priority = THREAD_PRIORITY_NORMAL;
- thread->affinity = 1;
+ thread->priority = 0;
+ thread->affinity = ~0;
thread->suspend = 0;
- thread->creation_time = time(NULL);
- thread->exit_time = 0;
+ thread->desktop_users = 0;
+ thread->token = NULL;
+
+ thread->creation_time = current_time;
+ thread->exit_time = 0;
list_init( &thread->mutex_list );
list_init( &thread->system_apc );
thread->inflight[i].server = thread->inflight[i].client = -1;
}
+/* check if address looks valid for a client-side data structure (TEB etc.) */
+static inline int is_valid_address( client_ptr_t addr )
+{
+ return addr && !(addr % sizeof(int));
+}
+
/* create a new thread */
struct thread *create_thread( int fd, struct process *process )
{
thread->process = (struct process *)grab_object( process );
thread->desktop = process->desktop;
+ thread->affinity = process->affinity;
if (!current) current = thread;
- if (!booting_thread) /* first thread ever */
- {
- booting_thread = thread;
- lock_master_socket(1);
- }
-
list_add_head( &thread_list, &thread->entry );
if (!(thread->id = alloc_ptid( thread )))
release_object( thread );
return NULL;
}
- if (!(thread->request_fd = create_anonymous_fd( &thread_fd_ops, fd, &thread->obj )))
+ if (!(thread->request_fd = create_anonymous_fd( &thread_fd_ops, fd, &thread->obj, 0 )))
{
release_object( thread );
return NULL;
}
- thread->token = (struct token *) grab_object( process->token );
-
set_fd_events( thread->request_fd, POLLIN ); /* start listening to events */
add_process_thread( thread->process, thread );
return thread;
static void cleanup_thread( struct thread *thread )
{
int i;
- struct thread_apc *apc;
- while ((apc = thread_dequeue_apc( thread, 0 ))) free( apc );
- if (thread->req_data) free( thread->req_data );
- if (thread->reply_data) free( thread->reply_data );
+ clear_apc_queue( &thread->system_apc );
+ clear_apc_queue( &thread->user_apc );
+ free( thread->req_data );
+ free( thread->reply_data );
if (thread->request_fd) release_object( thread->request_fd );
if (thread->reply_fd) release_object( thread->reply_fd );
if (thread->wait_fd) release_object( thread->wait_fd );
- free_msg_queue( thread );
+ free( thread->suspend_context );
cleanup_clipboard_thread(thread);
destroy_thread_windows( thread );
+ free_msg_queue( thread );
close_thread_desktop( thread );
for (i = 0; i < MAX_INFLIGHT_FDS; i++)
{
thread->request_fd = NULL;
thread->reply_fd = NULL;
thread->wait_fd = NULL;
+ thread->context = NULL;
+ thread->suspend_context = NULL;
thread->desktop = 0;
-
- if (thread == booting_thread) /* killing booting thread */
- {
- booting_thread = NULL;
- lock_master_socket(0);
- }
}
/* destroy a thread when its refcount is 0 */
static void destroy_thread( struct object *obj )
{
- struct thread_apc *apc;
struct thread *thread = (struct thread *)obj;
assert( obj->ops == &thread_ops );
assert( !thread->debug_ctx ); /* cannot still be debugging something */
list_remove( &thread->entry );
- while ((apc = thread_dequeue_apc( thread, 0 ))) free( apc );
cleanup_thread( thread );
release_object( thread->process );
if (thread->id) free_ptid( thread->id );
struct thread *thread = (struct thread *)obj;
assert( obj->ops == &thread_ops );
- fprintf( stderr, "Thread id=%04x unix pid=%d unix tid=%d teb=%p state=%d\n",
- thread->id, thread->unix_pid, thread->unix_tid, thread->teb, thread->state );
+ fprintf( stderr, "Thread id=%04x unix pid=%d unix tid=%d state=%d\n",
+ thread->id, thread->unix_pid, thread->unix_tid, thread->state );
}
static int thread_signaled( struct object *obj, struct thread *thread )
return (mythread->state == TERMINATED);
}
+static unsigned int thread_map_access( struct object *obj, unsigned int access )
+{
+ if (access & GENERIC_READ) access |= STANDARD_RIGHTS_READ | SYNCHRONIZE;
+ if (access & GENERIC_WRITE) access |= STANDARD_RIGHTS_WRITE | SYNCHRONIZE;
+ if (access & GENERIC_EXECUTE) access |= STANDARD_RIGHTS_EXECUTE;
+ if (access & GENERIC_ALL) access |= THREAD_ALL_ACCESS;
+ return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
+}
+
+static void dump_thread_apc( struct object *obj, int verbose )
+{
+ struct thread_apc *apc = (struct thread_apc *)obj;
+ assert( obj->ops == &thread_apc_ops );
+
+ fprintf( stderr, "APC owner=%p type=%u\n", apc->owner, apc->call.type );
+}
+
+static int thread_apc_signaled( struct object *obj, struct thread *thread )
+{
+ struct thread_apc *apc = (struct thread_apc *)obj;
+ return apc->executed;
+}
+
+static void thread_apc_destroy( struct object *obj )
+{
+ struct thread_apc *apc = (struct thread_apc *)obj;
+ if (apc->caller) release_object( apc->caller );
+ if (apc->owner) release_object( apc->owner );
+}
+
+/* queue an async procedure call */
+static struct thread_apc *create_apc( struct object *owner, const apc_call_t *call_data )
+{
+ struct thread_apc *apc;
+
+ if ((apc = alloc_object( &thread_apc_ops )))
+ {
+ apc->call = *call_data;
+ apc->caller = NULL;
+ apc->owner = owner;
+ apc->executed = 0;
+ apc->result.type = APC_NONE;
+ if (owner) grab_object( owner );
+ }
+ return apc;
+}
+
/* get a thread pointer from a thread id (and increment the refcount) */
struct thread *get_thread_from_id( thread_id_t id )
{
struct object *obj = get_ptid_entry( id );
if (obj && obj->ops == &thread_ops) return (struct thread *)grab_object( obj );
- set_win32_error( ERROR_INVALID_THREAD_ID );
+ set_error( STATUS_INVALID_CID );
return NULL;
}
access, &thread_ops );
}
-/* find a thread from a Unix pid */
-struct thread *get_thread_from_pid( int pid )
+/* find a thread from a Unix tid */
+struct thread *get_thread_from_tid( int tid )
{
struct thread *thread;
LIST_FOR_EACH_ENTRY( thread, &thread_list, struct thread, entry )
{
- if (thread->unix_tid == pid) return thread;
+ if (thread->unix_tid == tid) return thread;
}
+ return NULL;
+}
+
+/* find a thread from a Unix pid */
+struct thread *get_thread_from_pid( int pid )
+{
+ struct thread *thread;
+
LIST_FOR_EACH_ENTRY( thread, &thread_list, struct thread, entry )
{
if (thread->unix_pid == pid) return thread;
return NULL;
}
+/* determine if the thread is wow64 (32-bit client running on 64-bit server) */
+int is_wow64_thread( struct thread *thread )
+{
+ return (supported_cpus & CPU_64BIT_MASK) && !(CPU_FLAG(thread->process->cpu) & CPU_64BIT_MASK);
+}
+
+int set_thread_affinity( struct thread *thread, affinity_t affinity )
+{
+ int ret = 0;
+#ifdef HAVE_SCHED_SETAFFINITY
+ if (thread->unix_tid != -1)
+ {
+ cpu_set_t set;
+ int i;
+ affinity_t mask;
+
+ CPU_ZERO( &set );
+ for (i = 0, mask = 1; mask; i++, mask <<= 1)
+ if (affinity & mask) CPU_SET( i, &set );
+
+ ret = sched_setaffinity( thread->unix_tid, sizeof(set), &set );
+ }
+#endif
+ if (!ret) thread->affinity = affinity;
+ return ret;
+}
+
+#define THREAD_PRIORITY_REALTIME_HIGHEST 6
+#define THREAD_PRIORITY_REALTIME_LOWEST -7
+
/* set all information about a thread */
static void set_thread_info( struct thread *thread,
const struct set_thread_info_request *req )
{
if (req->mask & SET_THREAD_INFO_PRIORITY)
- thread->priority = req->priority;
+ {
+ int max = THREAD_PRIORITY_HIGHEST;
+ int min = THREAD_PRIORITY_LOWEST;
+ if (thread->process->priority == PROCESS_PRIOCLASS_REALTIME)
+ {
+ max = THREAD_PRIORITY_REALTIME_HIGHEST;
+ min = THREAD_PRIORITY_REALTIME_LOWEST;
+ }
+ if ((req->priority >= min && req->priority <= max) ||
+ req->priority == THREAD_PRIORITY_IDLE ||
+ req->priority == THREAD_PRIORITY_TIME_CRITICAL)
+ thread->priority = req->priority;
+ else
+ set_error( STATUS_INVALID_PARAMETER );
+ }
if (req->mask & SET_THREAD_INFO_AFFINITY)
{
- if (req->affinity != 1) set_error( STATUS_INVALID_PARAMETER );
- else thread->affinity = req->affinity;
+ if ((req->affinity & thread->process->affinity) != req->affinity)
+ set_error( STATUS_INVALID_PARAMETER );
+ else if (thread->state == TERMINATED)
+ set_error( STATUS_ACCESS_DENIED );
+ else if (set_thread_affinity( thread, req->affinity ))
+ file_set_error();
}
+ if (req->mask & SET_THREAD_INFO_TOKEN)
+ security_set_thread_token( thread, req->token );
}
/* stop a thread (at the Unix level) */
void stop_thread( struct thread *thread )
{
+ if (thread->context) return; /* already inside a debug event, no need for a signal */
/* can't stop a thread while initialisation is in progress */
if (is_process_init_done(thread->process)) send_thread_signal( thread, SIGUSR1 );
}
int i;
assert( wait );
+ thread->wait = wait->next;
for (i = 0, entry = wait->queues; i < wait->count; i++, entry++)
entry->obj->ops->remove_queue( entry->obj, entry );
if (wait->user) remove_timeout_user( wait->user );
- thread->wait = wait->next;
free( wait );
}
/* build the thread wait structure */
-static int wait_on( int count, struct object *objects[], int flags, const abs_time_t *timeout )
+static int wait_on( unsigned int count, struct object *objects[], int flags, timeout_t timeout )
{
struct thread_wait *wait;
struct wait_queue_entry *entry;
- int i;
+ unsigned int i;
- if (!(wait = mem_alloc( sizeof(*wait) + (count-1) * sizeof(*entry) ))) return 0;
+ if (!(wait = mem_alloc( FIELD_OFFSET(struct thread_wait, queues[count]) ))) return 0;
wait->next = current->wait;
wait->thread = current;
wait->count = count;
wait->flags = flags;
wait->user = NULL;
+ wait->timeout = timeout;
current->wait = wait;
- if (flags & SELECT_TIMEOUT)
- {
- wait->timeout.tv_sec = timeout->sec;
- wait->timeout.tv_usec = timeout->usec;
- }
for (i = 0, entry = wait->queues; i < count; i++, entry++)
{
struct thread_wait *wait = thread->wait;
struct wait_queue_entry *entry = wait->queues;
- /* Suspended threads may not acquire locks */
+ assert( wait );
+
+ if ((wait->flags & SELECT_INTERRUPTIBLE) && !list_empty( &thread->system_apc ))
+ return STATUS_USER_APC;
+
+ /* Suspended threads may not acquire locks, but they can run system APCs */
if (thread->process->suspend + thread->suspend > 0) return -1;
- assert( wait );
if (wait->flags & SELECT_ALL)
{
int not_ok = 0;
}
other_checks:
- if ((wait->flags & SELECT_INTERRUPTIBLE) && !list_empty(&thread->system_apc)) return STATUS_USER_APC;
if ((wait->flags & SELECT_ALERTABLE) && !list_empty(&thread->user_apc)) return STATUS_USER_APC;
- if (wait->flags & SELECT_TIMEOUT)
- {
- struct timeval now;
- gettimeofday( &now, NULL );
- if (!time_before( &now, &wait->timeout )) return STATUS_TIMEOUT;
- }
+ if (wait->timeout <= current_time) return STATUS_TIMEOUT;
return -1;
}
/* send the wakeup signal to a thread */
-static int send_thread_wakeup( struct thread *thread, void *cookie, int signaled )
+static int send_thread_wakeup( struct thread *thread, client_ptr_t cookie, int signaled )
{
struct wake_up_reply reply;
int ret;
+ memset( &reply, 0, sizeof(reply) );
reply.cookie = cookie;
reply.signaled = signaled;
if ((ret = write( get_unix_fd( thread->wait_fd ), &reply, sizeof(reply) )) == sizeof(reply))
int wake_thread( struct thread *thread )
{
int signaled, count;
- void *cookie;
+ client_ptr_t cookie;
for (count = 0; thread->wait; count++)
{
if ((signaled = check_wait( thread )) == -1) break;
cookie = thread->wait->cookie;
- if (debug_level) fprintf( stderr, "%04x: *wakeup* signaled=%d cookie=%p\n",
- thread->id, signaled, cookie );
+ if (debug_level) fprintf( stderr, "%04x: *wakeup* signaled=%d\n", thread->id, signaled );
end_wait( thread );
if (send_thread_wakeup( thread, cookie, signaled ) == -1) /* error */
break;
{
struct thread_wait *wait = ptr;
struct thread *thread = wait->thread;
- void *cookie = wait->cookie;
+ client_ptr_t cookie = wait->cookie;
wait->user = NULL;
if (thread->wait != wait) return; /* not the top-level wait, ignore it */
if (thread->suspend + thread->process->suspend > 0) return; /* suspended, ignore it */
- if (debug_level) fprintf( stderr, "%04x: *wakeup* signaled=%d cookie=%p\n",
- thread->id, STATUS_TIMEOUT, cookie );
+ if (debug_level) fprintf( stderr, "%04x: *wakeup* signaled=TIMEOUT\n", thread->id );
end_wait( thread );
if (send_thread_wakeup( thread, cookie, STATUS_TIMEOUT ) == -1) return;
/* check if other objects have become signaled in the meantime */
}
/* select on a list of handles */
-static void select_on( int count, void *cookie, const obj_handle_t *handles,
- int flags, const abs_time_t *timeout, obj_handle_t signal_obj )
+static timeout_t select_on( unsigned int count, client_ptr_t cookie, const obj_handle_t *handles,
+ int flags, timeout_t timeout, obj_handle_t signal_obj )
{
- int ret, i;
+ int ret;
+ unsigned int i;
struct object *objects[MAXIMUM_WAIT_OBJECTS];
- if ((count < 0) || (count > MAXIMUM_WAIT_OBJECTS))
+ if (timeout <= 0) timeout = current_time - timeout;
+
+ if (count > MAXIMUM_WAIT_OBJECTS)
{
set_error( STATUS_INVALID_PARAMETER );
- return;
+ return 0;
}
for (i = 0; i < count; i++)
{
}
/* now we need to wait */
- if (flags & SELECT_TIMEOUT)
+ if (current->wait->timeout != TIMEOUT_INFINITE)
{
- if (!(current->wait->user = add_timeout_user( ¤t->wait->timeout,
+ if (!(current->wait->user = add_timeout_user( current->wait->timeout,
thread_timeout, current->wait )))
{
end_wait( current );
set_error( STATUS_PENDING );
done:
- while (--i >= 0) release_object( objects[i] );
+ while (i > 0) release_object( objects[--i] );
+ return timeout;
}
/* attempt to wake threads sleeping on the object wait queue */
void wake_up( struct object *obj, int max )
{
- struct list *ptr, *next;
+ struct list *ptr;
- LIST_FOR_EACH_SAFE( ptr, next, &obj->wait_queue )
+ LIST_FOR_EACH( ptr, &obj->wait_queue )
{
struct wait_queue_entry *entry = LIST_ENTRY( ptr, struct wait_queue_entry, entry );
- if (wake_thread( entry->thread ))
- {
- if (max && !--max) break;
- }
+ if (!wake_thread( entry->thread )) continue;
+ if (max && !--max) break;
+ /* restart at the head of the list since a wake up can change the object wait queue */
+ ptr = &obj->wait_queue;
}
}
-/* queue an async procedure call */
-int thread_queue_apc( struct thread *thread, struct object *owner, void *func,
- enum apc_type type, int system, void *arg1, void *arg2, void *arg3 )
+/* return the apc queue to use for a given apc type */
+static inline struct list *get_apc_queue( struct thread *thread, enum apc_type type )
{
- struct thread_apc *apc;
- struct list *queue = system ? &thread->system_apc : &thread->user_apc;
-
- /* cancel a possible previous APC with the same owner */
- if (owner) thread_cancel_apc( thread, owner, system );
- if (thread->state == TERMINATED) return 0;
-
- if (!(apc = mem_alloc( sizeof(*apc) ))) return 0;
- apc->owner = owner;
- apc->func = func;
- apc->type = type;
- apc->arg1 = arg1;
- apc->arg2 = arg2;
- apc->arg3 = arg3;
+ switch(type)
+ {
+ case APC_NONE:
+ case APC_USER:
+ case APC_TIMER:
+ return &thread->user_apc;
+ default:
+ return &thread->system_apc;
+ }
+}
+
+/* check if thread is currently waiting for a (system) apc */
+static inline int is_in_apc_wait( struct thread *thread )
+{
+ return (thread->process->suspend || thread->suspend ||
+ (thread->wait && (thread->wait->flags & SELECT_INTERRUPTIBLE)));
+}
+
+/* queue an existing APC to a given thread */
+static int queue_apc( struct process *process, struct thread *thread, struct thread_apc *apc )
+{
+ struct list *queue;
+
+ if (!thread) /* find a suitable thread inside the process */
+ {
+ struct thread *candidate;
+
+ /* first try to find a waiting thread */
+ LIST_FOR_EACH_ENTRY( candidate, &process->thread_list, struct thread, proc_entry )
+ {
+ if (candidate->state == TERMINATED) continue;
+ if (is_in_apc_wait( candidate ))
+ {
+ thread = candidate;
+ break;
+ }
+ }
+ if (!thread)
+ {
+ /* then use the first one that accepts a signal */
+ LIST_FOR_EACH_ENTRY( candidate, &process->thread_list, struct thread, proc_entry )
+ {
+ if (send_thread_signal( candidate, SIGUSR1 ))
+ {
+ thread = candidate;
+ break;
+ }
+ }
+ }
+ if (!thread) return 0; /* nothing found */
+ queue = get_apc_queue( thread, apc->call.type );
+ }
+ else
+ {
+ if (thread->state == TERMINATED) return 0;
+ queue = get_apc_queue( thread, apc->call.type );
+ /* send signal for system APCs if needed */
+ if (queue == &thread->system_apc && list_empty( queue ) && !is_in_apc_wait( thread ))
+ {
+ if (!send_thread_signal( thread, SIGUSR1 )) return 0;
+ }
+ /* cancel a possible previous APC with the same owner */
+ if (apc->owner) thread_cancel_apc( thread, apc->owner, apc->call.type );
+ }
+
+ grab_object( apc );
list_add_tail( queue, &apc->entry );
if (!list_prev( queue, &apc->entry )) /* first one */
wake_thread( thread );
return 1;
}
+/* queue an async procedure call */
+int thread_queue_apc( struct thread *thread, struct object *owner, const apc_call_t *call_data )
+{
+ struct thread_apc *apc;
+ int ret = 0;
+
+ if ((apc = create_apc( owner, call_data )))
+ {
+ ret = queue_apc( NULL, thread, apc );
+ release_object( apc );
+ }
+ return ret;
+}
+
/* cancel the async procedure call owned by a specific object */
-void thread_cancel_apc( struct thread *thread, struct object *owner, int system )
+void thread_cancel_apc( struct thread *thread, struct object *owner, enum apc_type type )
{
struct thread_apc *apc;
- struct list *queue = system ? &thread->system_apc : &thread->user_apc;
+ struct list *queue = get_apc_queue( thread, type );
+
LIST_FOR_EACH_ENTRY( apc, queue, struct thread_apc, entry )
{
if (apc->owner != owner) continue;
list_remove( &apc->entry );
- free( apc );
+ apc->executed = 1;
+ wake_up( &apc->obj, 0 );
+ release_object( apc );
return;
}
}
-/* remove the head apc from the queue; the returned pointer must be freed by the caller */
+/* remove the head apc from the queue; the returned object must be released by the caller */
static struct thread_apc *thread_dequeue_apc( struct thread *thread, int system_only )
{
struct thread_apc *apc = NULL;
return apc;
}
+/* clear an APC queue, cancelling all the APCs on it */
+static void clear_apc_queue( struct list *queue )
+{
+ struct list *ptr;
+
+ while ((ptr = list_head( queue )))
+ {
+ struct thread_apc *apc = LIST_ENTRY( ptr, struct thread_apc, entry );
+ list_remove( &apc->entry );
+ apc->executed = 1;
+ wake_up( &apc->obj, 0 );
+ release_object( apc );
+ }
+}
+
/* add an fd to the inflight list */
/* return list index, or -1 on error */
int thread_add_inflight_fd( struct thread *thread, int client, int server )
return -1;
}
-/* retrieve an LDT selector entry */
-static void get_selector_entry( struct thread *thread, int entry,
- unsigned int *base, unsigned int *limit,
- unsigned char *flags )
-{
- if (!thread->process->ldt_copy)
- {
- set_error( STATUS_ACCESS_DENIED );
- return;
- }
- if (entry >= 8192)
- {
- set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
- return;
- }
- if (suspend_for_ptrace( thread ))
- {
- unsigned char flags_buf[4];
- int *addr = (int *)thread->process->ldt_copy + entry;
- if (read_thread_int( thread, addr, base ) == -1) goto done;
- if (read_thread_int( thread, addr + 8192, limit ) == -1) goto done;
- addr = (int *)thread->process->ldt_copy + 2*8192 + (entry >> 2);
- if (read_thread_int( thread, addr, (int *)flags_buf ) == -1) goto done;
- *flags = flags_buf[entry & 3];
- done:
- resume_after_ptrace( thread );
- }
-}
-
/* kill a thread on the spot */
void kill_thread( struct thread *thread, int violent_death )
{
if (thread->state == TERMINATED) return; /* already killed */
thread->state = TERMINATED;
- thread->exit_time = time(NULL);
+ thread->exit_time = current_time;
if (current == thread) current = NULL;
if (debug_level)
fprintf( stderr,"%04x: *killed* exit_code=%d\n",
if (thread->wait)
{
while (thread->wait) end_wait( thread );
- send_thread_wakeup( thread, NULL, STATUS_PENDING );
- /* if it is waiting on the socket, we don't need to send a SIGTERM */
+ send_thread_wakeup( thread, 0, STATUS_PENDING );
+ /* if it is waiting on the socket, we don't need to send a SIGQUIT */
violent_death = 0;
}
kill_console_processes( thread, 0 );
debug_exit_thread( thread );
abandon_mutexes( thread );
- remove_process_thread( thread->process, thread );
wake_up( &thread->obj, 0 );
- detach_thread( thread, violent_death ? SIGTERM : 0 );
+ if (violent_death) send_thread_signal( thread, SIGQUIT );
cleanup_thread( thread );
+ remove_process_thread( thread->process, thread );
release_object( thread );
}
+/* copy parts of a context structure */
+static void copy_context( context_t *to, const context_t *from, unsigned int flags )
+{
+ assert( to->cpu == from->cpu );
+ to->flags |= flags;
+ if (flags & SERVER_CTX_CONTROL) to->ctl = from->ctl;
+ if (flags & SERVER_CTX_INTEGER) to->integer = from->integer;
+ if (flags & SERVER_CTX_SEGMENTS) to->seg = from->seg;
+ if (flags & SERVER_CTX_FLOATING_POINT) to->fp = from->fp;
+ if (flags & SERVER_CTX_DEBUG_REGISTERS) to->debug = from->debug;
+ if (flags & SERVER_CTX_EXTENDED_REGISTERS) to->ext = from->ext;
+}
+
+/* return the context flags that correspond to system regs */
+/* (system regs are the ones we can't access on the client side) */
+static unsigned int get_context_system_regs( enum cpu_type cpu )
+{
+ switch (cpu)
+ {
+ case CPU_x86: return SERVER_CTX_DEBUG_REGISTERS;
+ case CPU_x86_64: return SERVER_CTX_DEBUG_REGISTERS;
+ case CPU_ALPHA: return 0;
+ case CPU_POWERPC: return 0;
+ case CPU_SPARC: return 0;
+ }
+ return 0;
+}
+
+/* trigger a breakpoint event in a given thread */
+void break_thread( struct thread *thread )
+{
+ debug_event_t data;
+
+ assert( thread->context );
+
+ memset( &data, 0, sizeof(data) );
+ data.exception.first = 1;
+ data.exception.exc_code = STATUS_BREAKPOINT;
+ data.exception.flags = EXCEPTION_CONTINUABLE;
+ switch (thread->context->cpu)
+ {
+ case CPU_x86:
+ data.exception.address = thread->context->ctl.i386_regs.eip;
+ break;
+ case CPU_x86_64:
+ data.exception.address = thread->context->ctl.x86_64_regs.rip;
+ break;
+ case CPU_ALPHA:
+ data.exception.address = thread->context->ctl.alpha_regs.fir;
+ break;
+ case CPU_POWERPC:
+ data.exception.address = thread->context->ctl.powerpc_regs.iar;
+ break;
+ case CPU_SPARC:
+ data.exception.address = thread->context->ctl.sparc_regs.pc;
+ break;
+ }
+ generate_debug_event( thread, EXCEPTION_DEBUG_EVENT, &data );
+ thread->debug_break = 0;
+}
+
/* take a snapshot of currently running threads */
struct thread_snapshot *thread_snap( int *count )
{
return thread->process->token;
}
-/* signal that we are finished booting on the client side */
-DECL_HANDLER(boot_done)
-{
- debug_level = max( debug_level, req->debug_level );
- if (current == booting_thread)
- {
- booting_thread = (struct thread *)~0UL; /* make sure it doesn't match other threads */
- lock_master_socket(0); /* allow other clients now */
- }
-}
-
/* create a new thread */
DECL_HANDLER(new_thread)
{
{
if (req->suspend) thread->suspend++;
reply->tid = get_thread_id( thread );
- if ((reply->handle = alloc_handle( current->process, thread,
- THREAD_ALL_ACCESS, req->inherit )))
+ if ((reply->handle = alloc_handle( current->process, thread, req->access, req->attributes )))
{
/* thread object will be released when the thread gets killed */
return;
/* initialize a new thread */
DECL_HANDLER(init_thread)
{
+ struct process *process = current->process;
int reply_fd = thread_get_inflight_fd( current, req->reply_fd );
int wait_fd = thread_get_inflight_fd( current, req->wait_fd );
- if (current->unix_pid != -1)
- {
- fatal_protocol_error( current, "init_thread: already running\n" );
- goto error;
- }
- if (reply_fd == -1 || fcntl( reply_fd, F_SETFL, O_NONBLOCK ) == -1)
+ if (current->reply_fd) /* already initialised */
{
- fatal_protocol_error( current, "bad reply fd\n" );
+ set_error( STATUS_INVALID_PARAMETER );
goto error;
}
+
+ if (reply_fd == -1 || fcntl( reply_fd, F_SETFL, O_NONBLOCK ) == -1) goto error;
+
+ current->reply_fd = create_anonymous_fd( &thread_fd_ops, reply_fd, ¤t->obj, 0 );
+ reply_fd = -1;
+ if (!current->reply_fd) goto error;
+
if (wait_fd == -1)
{
- fatal_protocol_error( current, "bad wait fd\n" );
- goto error;
+ set_error( STATUS_TOO_MANY_OPENED_FILES ); /* most likely reason */
+ return;
}
- if (!(current->reply_fd = create_anonymous_fd( &thread_fd_ops, reply_fd, ¤t->obj )))
+ if (!(current->wait_fd = create_anonymous_fd( &thread_fd_ops, wait_fd, ¤t->obj, 0 )))
+ return;
+
+ if (!is_valid_address(req->teb))
{
- reply_fd = -1;
- fatal_protocol_error( current, "could not allocate reply fd\n" );
- goto error;
- }
- if (!(current->wait_fd = create_anonymous_fd( &thread_fd_ops, wait_fd, ¤t->obj )))
+ set_error( STATUS_INVALID_PARAMETER );
return;
+ }
current->unix_pid = req->unix_pid;
current->unix_tid = req->unix_tid;
current->teb = req->teb;
- if (current->suspend + current->process->suspend > 0) stop_thread( current );
- if (current->process->running_threads > 1)
- generate_debug_event( current, CREATE_THREAD_DEBUG_EVENT, req->entry );
+ if (!process->peb) /* first thread, initialize the process too */
+ {
+ if (!CPU_FLAG(req->cpu) || !(supported_cpus & CPU_FLAG(req->cpu)))
+ {
+ set_error( STATUS_NOT_SUPPORTED );
+ return;
+ }
+ process->unix_pid = current->unix_pid;
+ process->peb = req->entry;
+ process->cpu = req->cpu;
+ reply->info_size = init_process( current );
+ }
+ else
+ {
+ if (req->cpu != process->cpu)
+ {
+ set_error( STATUS_INVALID_PARAMETER );
+ return;
+ }
+ if (process->unix_pid != current->unix_pid)
+ process->unix_pid = -1; /* can happen with linuxthreads */
+ if (current->suspend + process->suspend > 0) stop_thread( current );
+ generate_debug_event( current, CREATE_THREAD_DEBUG_EVENT, &req->entry );
+ }
+ debug_level = max( debug_level, req->debug_level );
+ set_thread_affinity( current, current->affinity );
- reply->pid = get_process_id( current->process );
+ reply->pid = get_process_id( process );
reply->tid = get_thread_id( current );
- reply->boot = (current == booting_thread);
reply->version = SERVER_PROTOCOL_VERSION;
+ reply->server_start = server_start_time;
+ reply->all_cpus = supported_cpus;
return;
error:
reply->handle = 0;
if (thread)
{
- reply->handle = alloc_handle( current->process, thread, req->access, req->inherit );
+ reply->handle = alloc_handle( current->process, thread, req->access, req->attributes );
release_object( thread );
}
}
reply->pid = get_process_id( thread->process );
reply->tid = get_thread_id( thread );
reply->teb = thread->teb;
- reply->exit_code = (thread->state == TERMINATED) ? thread->exit_code : STILL_ACTIVE;
+ reply->exit_code = (thread->state == TERMINATED) ? thread->exit_code : STATUS_PENDING;
reply->priority = thread->priority;
reply->affinity = thread->affinity;
reply->creation_time = thread->creation_time;
reply->exit_time = thread->exit_time;
+ reply->last = thread->process->running_threads == 1;
release_object( thread );
}
if ((thread = get_thread_from_handle( req->handle, THREAD_SUSPEND_RESUME )))
{
- if (thread->state == TERMINATED) set_error( STATUS_ACCESS_DENIED );
- else reply->count = resume_thread( thread );
+ reply->count = resume_thread( thread );
release_object( thread );
}
}
/* select on a handle list */
DECL_HANDLER(select)
{
- int count = get_req_data_size() / sizeof(int);
- select_on( count, req->cookie, get_req_data(), req->flags, &req->timeout, req->signal );
+ struct thread_apc *apc;
+ unsigned int count;
+ const apc_result_t *result = get_req_data();
+ const obj_handle_t *handles = (const obj_handle_t *)(result + 1);
+
+ if (get_req_data_size() < sizeof(*result))
+ {
+ set_error( STATUS_INVALID_PARAMETER );
+ return;
+ }
+ count = (get_req_data_size() - sizeof(*result)) / sizeof(obj_handle_t);
+
+ /* first store results of previous apc */
+ if (req->prev_apc)
+ {
+ if (!(apc = (struct thread_apc *)get_handle_obj( current->process, req->prev_apc,
+ 0, &thread_apc_ops ))) return;
+ apc->result = *result;
+ apc->executed = 1;
+ if (apc->result.type == APC_CREATE_THREAD) /* transfer the handle to the caller process */
+ {
+ obj_handle_t handle = duplicate_handle( current->process, apc->result.create_thread.handle,
+ apc->caller->process, 0, 0, DUP_HANDLE_SAME_ACCESS );
+ close_handle( current->process, apc->result.create_thread.handle );
+ apc->result.create_thread.handle = handle;
+ clear_error(); /* ignore errors from the above calls */
+ }
+ else if (apc->result.type == APC_ASYNC_IO)
+ {
+ if (apc->owner)
+ async_set_result( apc->owner, apc->result.async_io.status,
+ apc->result.async_io.total, apc->result.async_io.apc );
+ }
+ wake_up( &apc->obj, 0 );
+ close_handle( current->process, req->prev_apc );
+ release_object( apc );
+ }
+
+ reply->timeout = select_on( count, req->cookie, handles, req->flags, req->timeout, req->signal );
+
+ if (get_error() == STATUS_USER_APC)
+ {
+ for (;;)
+ {
+ if (!(apc = thread_dequeue_apc( current, !(req->flags & SELECT_ALERTABLE) )))
+ break;
+ /* Optimization: ignore APC_NONE calls, they are only used to
+ * wake up a thread, but since we got here the thread woke up already.
+ */
+ if (apc->call.type != APC_NONE)
+ {
+ if ((reply->apc_handle = alloc_handle( current->process, apc, SYNCHRONIZE, 0 )))
+ reply->call = apc->call;
+ release_object( apc );
+ break;
+ }
+ apc->executed = 1;
+ wake_up( &apc->obj, 0 );
+ release_object( apc );
+ }
+ }
}
-/* queue an APC for a thread */
+/* queue an APC for a thread or process */
DECL_HANDLER(queue_apc)
{
- struct thread *thread;
- if ((thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT )))
+ struct thread *thread = NULL;
+ struct process *process = NULL;
+ struct thread_apc *apc;
+
+ if (!(apc = create_apc( NULL, &req->call ))) return;
+
+ switch (apc->call.type)
+ {
+ case APC_NONE:
+ case APC_USER:
+ thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT );
+ break;
+ case APC_VIRTUAL_ALLOC:
+ case APC_VIRTUAL_FREE:
+ case APC_VIRTUAL_PROTECT:
+ case APC_VIRTUAL_FLUSH:
+ case APC_VIRTUAL_LOCK:
+ case APC_VIRTUAL_UNLOCK:
+ case APC_UNMAP_VIEW:
+ process = get_process_from_handle( req->handle, PROCESS_VM_OPERATION );
+ break;
+ case APC_VIRTUAL_QUERY:
+ process = get_process_from_handle( req->handle, PROCESS_QUERY_INFORMATION );
+ break;
+ case APC_MAP_VIEW:
+ process = get_process_from_handle( req->handle, PROCESS_VM_OPERATION );
+ if (process && process != current->process)
+ {
+ /* duplicate the handle into the target process */
+ obj_handle_t handle = duplicate_handle( current->process, apc->call.map_view.handle,
+ process, 0, 0, DUP_HANDLE_SAME_ACCESS );
+ if (handle) apc->call.map_view.handle = handle;
+ else
+ {
+ release_object( process );
+ process = NULL;
+ }
+ }
+ break;
+ case APC_CREATE_THREAD:
+ process = get_process_from_handle( req->handle, PROCESS_CREATE_THREAD );
+ break;
+ default:
+ set_error( STATUS_INVALID_PARAMETER );
+ break;
+ }
+
+ if (thread)
{
- thread_queue_apc( thread, NULL, req->func, APC_USER, !req->user,
- req->arg1, req->arg2, req->arg3 );
+ if (!queue_apc( NULL, thread, apc )) set_error( STATUS_THREAD_IS_TERMINATING );
release_object( thread );
}
+ else if (process)
+ {
+ reply->self = (process == current->process);
+ if (!reply->self)
+ {
+ obj_handle_t handle = alloc_handle( current->process, apc, SYNCHRONIZE, 0 );
+ if (handle)
+ {
+ if (queue_apc( process, NULL, apc ))
+ {
+ apc->caller = (struct thread *)grab_object( current );
+ reply->handle = handle;
+ }
+ else
+ {
+ close_handle( current->process, handle );
+ set_error( STATUS_PROCESS_IS_TERMINATING );
+ }
+ }
+ }
+ release_object( process );
+ }
+
+ release_object( apc );
}
-/* get next APC to call */
-DECL_HANDLER(get_apc)
+/* Get the result of an APC call */
+DECL_HANDLER(get_apc_result)
{
struct thread_apc *apc;
- for (;;)
+ if (!(apc = (struct thread_apc *)get_handle_obj( current->process, req->handle,
+ 0, &thread_apc_ops ))) return;
+ if (!apc->executed) set_error( STATUS_PENDING );
+ else
+ {
+ reply->result = apc->result;
+ /* close the handle directly to avoid an extra round-trip */
+ close_handle( current->process, req->handle );
+ }
+ release_object( apc );
+}
+
+/* retrieve the current context of a thread */
+DECL_HANDLER(get_thread_context)
+{
+ struct thread *thread;
+ context_t *context;
+
+ if (get_reply_max_size() < sizeof(context_t))
+ {
+ set_error( STATUS_INVALID_PARAMETER );
+ return;
+ }
+ if (!(thread = get_thread_from_handle( req->handle, THREAD_GET_CONTEXT ))) return;
+
+ if (req->suspend)
{
- if (!(apc = thread_dequeue_apc( current, !req->alertable )))
+ if (thread != current || !thread->suspend_context)
{
- /* no more APCs */
- reply->func = NULL;
- reply->type = APC_NONE;
- return;
+ /* not suspended, shouldn't happen */
+ set_error( STATUS_INVALID_PARAMETER );
+ }
+ else
+ {
+ if (thread->context == thread->suspend_context) thread->context = NULL;
+ set_reply_data_ptr( thread->suspend_context, sizeof(context_t) );
+ thread->suspend_context = NULL;
+ }
+ }
+ else if (thread != current && !thread->context)
+ {
+ /* thread is not suspended, retry (if it's still running) */
+ if (thread->state != RUNNING) set_error( STATUS_ACCESS_DENIED );
+ else set_error( STATUS_PENDING );
+ }
+ else if ((context = set_reply_data_size( sizeof(context_t) )))
+ {
+ unsigned int flags = get_context_system_regs( thread->process->cpu );
+
+ memset( context, 0, sizeof(context_t) );
+ context->cpu = thread->process->cpu;
+ if (thread->context) copy_context( context, thread->context, req->flags & ~flags );
+ if (flags) get_thread_context( thread, context, flags );
+ }
+ reply->self = (thread == current);
+ release_object( thread );
+}
+
+/* set the current context of a thread */
+DECL_HANDLER(set_thread_context)
+{
+ struct thread *thread;
+ const context_t *context = get_req_data();
+
+ if (get_req_data_size() < sizeof(context_t))
+ {
+ set_error( STATUS_INVALID_PARAMETER );
+ return;
+ }
+ if (!(thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT ))) return;
+
+ if (req->suspend)
+ {
+ if (thread != current || thread->context || context->cpu != thread->process->cpu)
+ {
+ /* nested suspend or exception, shouldn't happen */
+ set_error( STATUS_INVALID_PARAMETER );
+ }
+ else if ((thread->suspend_context = mem_alloc( sizeof(context_t) )))
+ {
+ memcpy( thread->suspend_context, get_req_data(), sizeof(context_t) );
+ thread->context = thread->suspend_context;
+ if (thread->debug_break) break_thread( thread );
}
- /* Optimization: ignore APCs that have a NULL func; they are only used
- * to wake up a thread, but since we got here the thread woke up already.
- * Exception: for APC_ASYNC_IO, func == NULL is legal.
- */
- if (apc->func || apc->type == APC_ASYNC_IO) break;
- free( apc );
}
- reply->func = apc->func;
- reply->type = apc->type;
- reply->arg1 = apc->arg1;
- reply->arg2 = apc->arg2;
- reply->arg3 = apc->arg3;
- free( apc );
+ else if (thread != current && !thread->context)
+ {
+ /* thread is not suspended, retry (if it's still running) */
+ if (thread->state != RUNNING) set_error( STATUS_ACCESS_DENIED );
+ else set_error( STATUS_PENDING );
+ }
+ else if (context->cpu == thread->process->cpu)
+ {
+ unsigned int system_flags = get_context_system_regs(context->cpu) & context->flags;
+ unsigned int client_flags = context->flags & ~system_flags;
+
+ if (system_flags) set_thread_context( thread, context, system_flags );
+ if (thread->context && !get_error()) copy_context( thread->context, context, client_flags );
+ }
+ else set_error( STATUS_INVALID_PARAMETER );
+
+ reply->self = (thread == current);
+ release_object( thread );
}
/* fetch a selector entry for a thread */
projects / wine / blobdiff