1 /* List of target connections for GDB.
3 Copyright (C) 2017-2022 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "target-connection.h"
27 #include "observable.h"
29 /* A map between connection number and representative process_stratum
31 static std::map
<int, process_stratum_target
*> process_targets
;
33 /* The highest connection number ever given to a target. */
34 static int highest_target_connection_num
;
36 /* See target-connection.h. */
39 connection_list_add (process_stratum_target
*t
)
41 if (t
->connection_number
== 0)
43 t
->connection_number
= ++highest_target_connection_num
;
44 process_targets
[t
->connection_number
] = t
;
48 /* See target-connection.h. */
51 connection_list_remove (process_stratum_target
*t
)
53 /* Notify about the connection being removed before we reset the
54 connection number to zero. */
55 gdb::observers::connection_removed
.notify (t
);
56 process_targets
.erase (t
->connection_number
);
57 t
->connection_number
= 0;
60 /* See target-connection.h. */
63 make_target_connection_string (process_stratum_target
*t
)
65 if (t
->connection_string () != NULL
)
66 return string_printf ("%s %s", t
->shortname (),
67 t
->connection_string ());
69 return t
->shortname ();
72 /* Prints the list of target connections and their details on UIOUT.
74 If REQUESTED_CONNECTIONS is not NULL, it's a list of GDB ids of the
75 target connections that should be printed. Otherwise, all target
76 connections are printed. */
79 print_connection (struct ui_out
*uiout
, const char *requested_connections
)
84 /* Compute number of lines we will print. */
85 for (const auto &it
: process_targets
)
87 if (!number_is_in_list (requested_connections
, it
.first
))
92 process_stratum_target
*t
= it
.second
;
94 size_t l
= make_target_connection_string (t
).length ();
101 uiout
->message (_("No connections.\n"));
105 ui_out_emit_table
table_emitter (uiout
, 4, process_targets
.size (),
108 uiout
->table_header (1, ui_left
, "current", "");
109 uiout
->table_header (4, ui_left
, "number", "Num");
110 /* The text in the "what" column may include spaces. Add one extra
111 space to visually separate the What and Description columns a
112 little better. Compare:
113 "* 1 remote :9999 Remote serial target in gdb-specific protocol"
114 "* 1 remote :9999 Remote serial target in gdb-specific protocol"
116 uiout
->table_header (what_len
+ 1, ui_left
, "what", "What");
117 uiout
->table_header (17, ui_left
, "description", "Description");
119 uiout
->table_body ();
121 for (const auto &it
: process_targets
)
123 process_stratum_target
*t
= it
.second
;
125 if (!number_is_in_list (requested_connections
, t
->connection_number
))
128 ui_out_emit_tuple
tuple_emitter (uiout
, NULL
);
130 if (current_inferior ()->process_target () == t
)
131 uiout
->field_string ("current", "*");
133 uiout
->field_skip ("current");
135 uiout
->field_signed ("number", t
->connection_number
);
137 uiout
->field_string ("what", make_target_connection_string (t
));
139 uiout
->field_string ("description", t
->longname ());
145 /* The "info connections" command. */
148 info_connections_command (const char *args
, int from_tty
)
150 print_connection (current_uiout
, args
);
153 void _initialize_target_connection ();
156 _initialize_target_connection ()
158 add_info ("connections", info_connections_command
,
160 Target connections in use.\n\
161 Shows the list of target connections currently in use."));