163 lines
4.4 KiB
C
163 lines
4.4 KiB
C
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/* List of target connections for GDB.
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Copyright (C) 2017-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "target-connection.h"
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#include <map>
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#include "inferior.h"
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#include "target.h"
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/* A map between connection number and representative process_stratum
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target. */
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static std::map<int, process_stratum_target *> process_targets;
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/* The highest connection number ever given to a target. */
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static int highest_target_connection_num;
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/* See target-connection.h. */
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void
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connection_list_add (process_stratum_target *t)
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{
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if (t->connection_number == 0)
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{
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t->connection_number = ++highest_target_connection_num;
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process_targets[t->connection_number] = t;
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}
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}
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/* See target-connection.h. */
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void
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connection_list_remove (process_stratum_target *t)
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{
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process_targets.erase (t->connection_number);
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t->connection_number = 0;
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}
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/* Make a target connection string for T. This is usually T's
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shortname, but it includes the result of
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process_stratum_target::connection_string() too if T supports
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it. */
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static std::string
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make_target_connection_string (process_stratum_target *t)
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{
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if (t->connection_string () != NULL)
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return string_printf ("%s %s", t->shortname (),
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t->connection_string ());
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else
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return t->shortname ();
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}
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/* Prints the list of target connections and their details on UIOUT.
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If REQUESTED_CONNECTIONS is not NULL, it's a list of GDB ids of the
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target connections that should be printed. Otherwise, all target
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connections are printed. */
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static void
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print_connection (struct ui_out *uiout, const char *requested_connections)
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{
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int count = 0;
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size_t what_len = 0;
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/* Compute number of lines we will print. */
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for (const auto &it : process_targets)
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{
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if (!number_is_in_list (requested_connections, it.first))
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continue;
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++count;
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process_stratum_target *t = it.second;
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size_t l = strlen (t->shortname ());
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if (t->connection_string () != NULL)
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l += 1 + strlen (t->connection_string ());
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if (l > what_len)
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what_len = l;
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}
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if (count == 0)
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{
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uiout->message (_("No connections.\n"));
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return;
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}
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ui_out_emit_table table_emitter (uiout, 4, process_targets.size (),
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"connections");
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uiout->table_header (1, ui_left, "current", "");
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uiout->table_header (4, ui_left, "number", "Num");
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/* The text in the "what" column may include spaces. Add one extra
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space to visually separate the What and Description columns a
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little better. Compare:
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"* 1 remote :9999 Remote serial target in gdb-specific protocol"
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"* 1 remote :9999 Remote serial target in gdb-specific protocol"
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*/
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uiout->table_header (what_len + 1, ui_left, "what", "What");
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uiout->table_header (17, ui_left, "description", "Description");
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uiout->table_body ();
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for (const auto &it : process_targets)
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{
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process_stratum_target *t = it.second;
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if (!number_is_in_list (requested_connections, t->connection_number))
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continue;
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ui_out_emit_tuple tuple_emitter (uiout, NULL);
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if (current_inferior ()->process_target () == t)
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uiout->field_string ("current", "*");
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else
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uiout->field_skip ("current");
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uiout->field_signed ("number", t->connection_number);
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uiout->field_string ("what", make_target_connection_string (t).c_str ());
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uiout->field_string ("description", t->longname ());
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uiout->text ("\n");
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}
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}
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/* The "info connections" command. */
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static void
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info_connections_command (const char *args, int from_tty)
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{
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print_connection (current_uiout, args);
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}
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void
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_initialize_target_connection ()
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{
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add_info ("connections", info_connections_command,
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_("\
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Target connections in use.\n\
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Shows the list of target connections currently in use."));
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}
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