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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * FIXME: heap snapshots not implemented
38 struct object obj; /* object header */
39 struct process *process; /* process of this snapshot (for modules and heaps) */
40 struct process_snapshot *processes; /* processes snapshot */
41 int process_count; /* count of processes */
42 int process_pos; /* current position in proc snapshot */
43 struct thread_snapshot *threads; /* threads snapshot */
44 int thread_count; /* count of threads */
45 int thread_pos; /* current position in thread snapshot */
46 struct module_snapshot *modules; /* modules snapshot */
47 int module_count; /* count of modules */
48 int module_pos; /* current position in module snapshot */
51 static void snapshot_dump( struct object *obj, int verbose );
52 static void snapshot_destroy( struct object *obj );
54 static const struct object_ops snapshot_ops =
56 sizeof(struct snapshot), /* size */
57 snapshot_dump, /* dump */
58 no_add_queue, /* add_queue */
59 NULL, /* remove_queue */
62 NULL, /* get_poll_events */
63 NULL, /* poll_event */
64 no_get_fd, /* get_fd */
66 no_get_file_info, /* get_file_info */
67 NULL, /* queue_async */
68 snapshot_destroy /* destroy */
72 /* create a new snapshot */
73 static struct snapshot *create_snapshot( void *pid, int flags )
75 struct process *process = NULL;
76 struct snapshot *snapshot;
78 /* need a process for modules and heaps */
79 if (flags & (TH32CS_SNAPMODULE|TH32CS_SNAPHEAPLIST))
81 if (!pid) process = (struct process *)grab_object( current->process );
82 else if (!(process = get_process_from_id( pid ))) return NULL;
85 if (!(snapshot = alloc_object( &snapshot_ops, -1 )))
87 if (process) release_object( process );
91 snapshot->process = process;
93 snapshot->process_pos = 0;
94 snapshot->process_count = 0;
95 if (flags & TH32CS_SNAPPROCESS)
96 snapshot->processes = process_snap( &snapshot->process_count );
98 snapshot->thread_pos = 0;
99 snapshot->thread_count = 0;
100 if (flags & TH32CS_SNAPTHREAD)
101 snapshot->threads = thread_snap( &snapshot->thread_count );
103 snapshot->module_pos = 0;
104 snapshot->module_count = 0;
105 if (flags & TH32CS_SNAPMODULE)
106 snapshot->modules = module_snap( process, &snapshot->module_count );
111 /* get the next process in the snapshot */
112 static int snapshot_next_process( struct snapshot *snapshot, struct next_process_reply *reply )
114 struct process_snapshot *ptr;
116 if (!snapshot->process_count)
118 set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
121 if (snapshot->process_pos >= snapshot->process_count)
123 set_error( STATUS_NO_MORE_FILES );
126 ptr = &snapshot->processes[snapshot->process_pos++];
127 reply->count = ptr->count;
128 reply->pid = get_process_id( ptr->process );
129 reply->ppid = get_process_id( ptr->process->parent );
130 reply->heap = 0; /* FIXME */
131 reply->module = 0; /* FIXME */
132 reply->threads = ptr->threads;
133 reply->priority = ptr->priority;
134 if (ptr->process->exe.filename)
136 size_t len = min( ptr->process->exe.namelen, get_reply_max_size() );
137 set_reply_data( ptr->process->exe.filename, len );
142 /* get the next thread in the snapshot */
143 static int snapshot_next_thread( struct snapshot *snapshot, struct next_thread_reply *reply )
145 struct thread_snapshot *ptr;
147 if (!snapshot->thread_count)
149 set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
152 if (snapshot->thread_pos >= snapshot->thread_count)
154 set_error( STATUS_NO_MORE_FILES );
157 ptr = &snapshot->threads[snapshot->thread_pos++];
158 reply->count = ptr->count;
159 reply->pid = get_process_id( ptr->thread->process );
160 reply->tid = get_thread_id( ptr->thread );
161 reply->base_pri = ptr->priority;
162 reply->delta_pri = 0; /* FIXME */
166 /* get the next module in the snapshot */
167 static int snapshot_next_module( struct snapshot *snapshot, struct next_module_reply *reply )
169 struct module_snapshot *ptr;
171 if (!snapshot->module_count)
173 set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
176 if (snapshot->module_pos >= snapshot->module_count)
178 set_error( STATUS_NO_MORE_FILES );
181 ptr = &snapshot->modules[snapshot->module_pos++];
182 reply->pid = get_process_id( snapshot->process );
183 reply->base = ptr->base;
184 reply->size = ptr->size;
187 size_t len = min( ptr->namelen, get_reply_max_size() );
188 set_reply_data( ptr->filename, len );
193 static void snapshot_dump( struct object *obj, int verbose )
195 struct snapshot *snapshot = (struct snapshot *)obj;
196 assert( obj->ops == &snapshot_ops );
197 fprintf( stderr, "Snapshot: %d procs %d threads %d modules\n",
198 snapshot->process_count, snapshot->thread_count, snapshot->module_count );
201 static void snapshot_destroy( struct object *obj )
204 struct snapshot *snapshot = (struct snapshot *)obj;
205 assert( obj->ops == &snapshot_ops );
206 if (snapshot->process_count)
208 for (i = 0; i < snapshot->process_count; i++)
209 release_object( snapshot->processes[i].process );
210 free( snapshot->processes );
212 if (snapshot->thread_count)
214 for (i = 0; i < snapshot->thread_count; i++)
215 release_object( snapshot->threads[i].thread );
216 free( snapshot->threads );
218 if (snapshot->module_count)
220 for (i = 0; i < snapshot->module_count; i++)
221 free( snapshot->modules[i].filename );
222 free( snapshot->modules );
224 if (snapshot->process) release_object( snapshot->process );
227 /* create a snapshot */
228 DECL_HANDLER(create_snapshot)
230 struct snapshot *snapshot;
233 if ((snapshot = create_snapshot( req->pid, req->flags )))
235 reply->handle = alloc_handle( current->process, snapshot, 0, req->inherit );
236 release_object( snapshot );
240 /* get the next process from a snapshot */
241 DECL_HANDLER(next_process)
243 struct snapshot *snapshot;
245 if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
248 if (req->reset) snapshot->process_pos = 0;
249 snapshot_next_process( snapshot, reply );
250 release_object( snapshot );
254 /* get the next thread from a snapshot */
255 DECL_HANDLER(next_thread)
257 struct snapshot *snapshot;
259 if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
262 if (req->reset) snapshot->thread_pos = 0;
263 snapshot_next_thread( snapshot, reply );
264 release_object( snapshot );
268 /* get the next module from a snapshot */
269 DECL_HANDLER(next_module)
271 struct snapshot *snapshot;
273 if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
276 if (req->reset) snapshot->module_pos = 0;
277 snapshot_next_module( snapshot, reply );
278 release_object( snapshot );