Add AppDefaults app selection to control panel
[wine/gsoc-2012-control.git] / server / snapshot.c
blobdd00bd1418dee618c433a0e330216ee42d81cf31
1 /*
2 * Server-side snapshots
4 * Copyright (C) 1999 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
20 * FIXME: heap snapshots not implemented
23 #include "config.h"
24 #include "wine/port.h"
26 #include <assert.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <stdarg.h>
31 #include "ntstatus.h"
32 #define WIN32_NO_STATUS
33 #include "windef.h"
34 #include "winternl.h"
36 #include "handle.h"
37 #include "process.h"
38 #include "thread.h"
39 #include "request.h"
42 struct snapshot
44 struct object obj; /* object header */
45 struct process_snapshot *processes; /* processes snapshot */
46 int process_count; /* count of processes */
47 int process_pos; /* current position in proc snapshot */
48 struct thread_snapshot *threads; /* threads snapshot */
49 int thread_count; /* count of threads */
50 int thread_pos; /* current position in thread snapshot */
53 static void snapshot_dump( struct object *obj, int verbose );
54 static void snapshot_destroy( struct object *obj );
56 static const struct object_ops snapshot_ops =
58 sizeof(struct snapshot), /* size */
59 snapshot_dump, /* dump */
60 no_get_type, /* get_type */
61 no_add_queue, /* add_queue */
62 NULL, /* remove_queue */
63 NULL, /* signaled */
64 NULL, /* satisfied */
65 no_signal, /* signal */
66 no_get_fd, /* get_fd */
67 no_map_access, /* map_access */
68 default_get_sd, /* get_sd */
69 default_set_sd, /* set_sd */
70 no_lookup_name, /* lookup_name */
71 no_open_file, /* open_file */
72 no_close_handle, /* close_handle */
73 snapshot_destroy /* destroy */
77 /* create a new snapshot */
78 static struct snapshot *create_snapshot( unsigned int flags )
80 struct snapshot *snapshot;
82 if (!(snapshot = alloc_object( &snapshot_ops ))) return NULL;
84 snapshot->process_pos = 0;
85 snapshot->process_count = 0;
86 if (flags & SNAP_PROCESS)
87 snapshot->processes = process_snap( &snapshot->process_count );
89 snapshot->thread_pos = 0;
90 snapshot->thread_count = 0;
91 if (flags & SNAP_THREAD)
92 snapshot->threads = thread_snap( &snapshot->thread_count );
94 return snapshot;
97 /* get the next process in the snapshot */
98 static int snapshot_next_process( struct snapshot *snapshot, struct next_process_reply *reply )
100 struct process_snapshot *ptr;
101 struct process_dll *exe_module;
103 if (!snapshot->process_count)
105 set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
106 return 0;
108 if (snapshot->process_pos >= snapshot->process_count)
110 set_error( STATUS_NO_MORE_FILES );
111 return 0;
113 ptr = &snapshot->processes[snapshot->process_pos++];
114 reply->count = ptr->count;
115 reply->pid = get_process_id( ptr->process );
116 reply->ppid = ptr->process->parent ? get_process_id( ptr->process->parent ) : 0;
117 reply->threads = ptr->threads;
118 reply->priority = ptr->priority;
119 reply->handles = ptr->handles;
120 reply->unix_pid = ptr->process->unix_pid;
121 if ((exe_module = get_process_exe_module( ptr->process )) && exe_module->filename)
123 data_size_t len = min( exe_module->namelen, get_reply_max_size() );
124 set_reply_data( exe_module->filename, len );
126 return 1;
129 /* get the next thread in the snapshot */
130 static int snapshot_next_thread( struct snapshot *snapshot, struct next_thread_reply *reply )
132 struct thread_snapshot *ptr;
134 if (!snapshot->thread_count)
136 set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
137 return 0;
139 if (snapshot->thread_pos >= snapshot->thread_count)
141 set_error( STATUS_NO_MORE_FILES );
142 return 0;
144 ptr = &snapshot->threads[snapshot->thread_pos++];
145 reply->count = ptr->count;
146 reply->pid = get_process_id( ptr->thread->process );
147 reply->tid = get_thread_id( ptr->thread );
148 reply->base_pri = ptr->priority;
149 reply->delta_pri = 0; /* FIXME */
150 return 1;
153 static void snapshot_dump( struct object *obj, int verbose )
155 struct snapshot *snapshot = (struct snapshot *)obj;
156 assert( obj->ops == &snapshot_ops );
157 fprintf( stderr, "Snapshot: %d procs %d threads\n",
158 snapshot->process_count, snapshot->thread_count );
161 static void snapshot_destroy( struct object *obj )
163 int i;
164 struct snapshot *snapshot = (struct snapshot *)obj;
165 assert( obj->ops == &snapshot_ops );
166 if (snapshot->process_count)
168 for (i = 0; i < snapshot->process_count; i++)
169 release_object( snapshot->processes[i].process );
170 free( snapshot->processes );
172 if (snapshot->thread_count)
174 for (i = 0; i < snapshot->thread_count; i++)
175 release_object( snapshot->threads[i].thread );
176 free( snapshot->threads );
180 /* create a snapshot */
181 DECL_HANDLER(create_snapshot)
183 struct snapshot *snapshot;
185 reply->handle = 0;
186 if ((snapshot = create_snapshot( req->flags )))
188 reply->handle = alloc_handle( current->process, snapshot, 0, req->attributes );
189 release_object( snapshot );
193 /* get the next process from a snapshot */
194 DECL_HANDLER(next_process)
196 struct snapshot *snapshot;
198 if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
199 0, &snapshot_ops )))
201 if (req->reset) snapshot->process_pos = 0;
202 snapshot_next_process( snapshot, reply );
203 release_object( snapshot );
207 /* get the next thread from a snapshot */
208 DECL_HANDLER(next_thread)
210 struct snapshot *snapshot;
212 if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
213 0, &snapshot_ops )))
215 if (req->reset) snapshot->thread_pos = 0;
216 snapshot_next_thread( snapshot, reply );
217 release_object( snapshot );