2 * Server-side snapshots
4 * Copyright (C) 1999 Alexandre Julliard
6 * FIXME: only process snapshots implemented for now
25 struct object obj
; /* object header */
26 struct process_snapshot
*process
; /* processes snapshot */
27 int process_count
; /* count of processes */
28 int process_pos
; /* current position in proc snapshot */
31 static void snapshot_dump( struct object
*obj
, int verbose
);
32 static void snapshot_destroy( struct object
*obj
);
34 static const struct object_ops snapshot_ops
=
36 sizeof(struct snapshot
), /* size */
37 snapshot_dump
, /* dump */
38 no_add_queue
, /* add_queue */
39 NULL
, /* remove_queue */
42 NULL
, /* get_poll_events */
43 NULL
, /* poll_event */
44 no_read_fd
, /* get_read_fd */
45 no_write_fd
, /* get_write_fd */
47 no_get_file_info
, /* get_file_info */
48 snapshot_destroy
/* destroy */
52 /* create a new snapshot */
53 static struct snapshot
*create_snapshot( int flags
)
55 struct snapshot
*snapshot
;
57 if ((snapshot
= alloc_object( &snapshot_ops
, -1 )))
59 if (flags
& TH32CS_SNAPPROCESS
)
60 snapshot
->process
= process_snap( &snapshot
->process_count
);
62 snapshot
->process_count
= 0;
63 snapshot
->process_pos
= 0;
68 /* get the next process in the snapshot */
69 static int snapshot_next_process( struct snapshot
*snapshot
, struct next_process_request
*req
)
71 struct process_snapshot
*ptr
;
73 if (!snapshot
->process_count
)
75 set_error( ERROR_INVALID_PARAMETER
); /* FIXME */
78 if (req
->reset
) snapshot
->process_pos
= 0;
79 else if (snapshot
->process_pos
>= snapshot
->process_count
)
81 set_error( ERROR_NO_MORE_FILES
);
84 ptr
= &snapshot
->process
[snapshot
->process_pos
++];
85 req
->pid
= ptr
->process
;
86 req
->threads
= ptr
->threads
;
87 req
->priority
= ptr
->priority
;
91 static void snapshot_dump( struct object
*obj
, int verbose
)
93 struct snapshot
*snapshot
= (struct snapshot
*)obj
;
94 assert( obj
->ops
== &snapshot_ops
);
95 fprintf( stderr
, "Snapshot: %d processes\n",
96 snapshot
->process_count
);
99 static void snapshot_destroy( struct object
*obj
)
102 struct snapshot
*snapshot
= (struct snapshot
*)obj
;
103 assert( obj
->ops
== &snapshot_ops
);
104 if (snapshot
->process_count
)
106 for (i
= 0; i
< snapshot
->process_count
; i
++)
107 release_object( snapshot
->process
[i
].process
);
108 free( snapshot
->process
);
112 /* create a snapshot */
113 DECL_HANDLER(create_snapshot
)
115 struct snapshot
*snapshot
;
118 if ((snapshot
= create_snapshot( req
->flags
)))
120 req
->handle
= alloc_handle( current
->process
, snapshot
, 0, req
->inherit
);
121 release_object( snapshot
);
125 /* get the next process from a snapshot */
126 DECL_HANDLER(next_process
)
128 struct snapshot
*snapshot
;
130 if ((snapshot
= (struct snapshot
*)get_handle_obj( current
->process
, req
->handle
,
133 snapshot_next_process( snapshot
, req
);
134 release_object( snapshot
);