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- /* List of target connections for GDB.
- Copyright (C) 2017-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #include "defs.h"
- #include "target-connection.h"
- #include <map>
- #include "inferior.h"
- #include "target.h"
- #include "observable.h"
- /* A map between connection number and representative process_stratum
- target. */
- static std::map<int, process_stratum_target *> process_targets;
- /* The highest connection number ever given to a target. */
- static int highest_target_connection_num;
- /* See target-connection.h. */
- void
- connection_list_add (process_stratum_target *t)
- {
- if (t->connection_number == 0)
- {
- t->connection_number = ++highest_target_connection_num;
- process_targets[t->connection_number] = t;
- }
- }
- /* See target-connection.h. */
- void
- connection_list_remove (process_stratum_target *t)
- {
- /* Notify about the connection being removed before we reset the
- connection number to zero. */
- gdb::observers::connection_removed.notify (t);
- process_targets.erase (t->connection_number);
- t->connection_number = 0;
- }
- /* See target-connection.h. */
- std::string
- make_target_connection_string (process_stratum_target *t)
- {
- if (t->connection_string () != NULL)
- return string_printf ("%s %s", t->shortname (),
- t->connection_string ());
- else
- return t->shortname ();
- }
- /* Prints the list of target connections and their details on UIOUT.
- If REQUESTED_CONNECTIONS is not NULL, it's a list of GDB ids of the
- target connections that should be printed. Otherwise, all target
- connections are printed. */
- static void
- print_connection (struct ui_out *uiout, const char *requested_connections)
- {
- int count = 0;
- size_t what_len = 0;
- /* Compute number of lines we will print. */
- for (const auto &it : process_targets)
- {
- if (!number_is_in_list (requested_connections, it.first))
- continue;
- ++count;
- process_stratum_target *t = it.second;
- size_t l = strlen (t->shortname ());
- if (t->connection_string () != NULL)
- l += 1 + strlen (t->connection_string ());
- if (l > what_len)
- what_len = l;
- }
- if (count == 0)
- {
- uiout->message (_("No connections.\n"));
- return;
- }
- ui_out_emit_table table_emitter (uiout, 4, process_targets.size (),
- "connections");
- uiout->table_header (1, ui_left, "current", "");
- uiout->table_header (4, ui_left, "number", "Num");
- /* The text in the "what" column may include spaces. Add one extra
- space to visually separate the What and Description columns a
- little better. Compare:
- "* 1 remote :9999 Remote serial target in gdb-specific protocol"
- "* 1 remote :9999 Remote serial target in gdb-specific protocol"
- */
- uiout->table_header (what_len + 1, ui_left, "what", "What");
- uiout->table_header (17, ui_left, "description", "Description");
- uiout->table_body ();
- for (const auto &it : process_targets)
- {
- process_stratum_target *t = it.second;
- if (!number_is_in_list (requested_connections, t->connection_number))
- continue;
- ui_out_emit_tuple tuple_emitter (uiout, NULL);
- if (current_inferior ()->process_target () == t)
- uiout->field_string ("current", "*");
- else
- uiout->field_skip ("current");
- uiout->field_signed ("number", t->connection_number);
- uiout->field_string ("what", make_target_connection_string (t));
- uiout->field_string ("description", t->longname ());
- uiout->text ("\n");
- }
- }
- /* The "info connections" command. */
- static void
- info_connections_command (const char *args, int from_tty)
- {
- print_connection (current_uiout, args);
- }
- void _initialize_target_connection ();
- void
- _initialize_target_connection ()
- {
- add_info ("connections", info_connections_command,
- _("\
- Target connections in use.\n\
- Shows the list of target connections currently in use."));
- }
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