/* Multi-process control for GDB, the GNU debugger.
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008-2020 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "exec.h"
#include "inferior.h"
#include "target.h"
#include "command.h"
+#include "completer.h"
#include "gdbcmd.h"
#include "gdbthread.h"
#include "ui-out.h"
-
-void _initialize_inferiors (void);
-
-static struct inferior *inferior_list = NULL;
+#include "observable.h"
+#include "gdbcore.h"
+#include "symfile.h"
+#include "gdbsupport/environ.h"
+#include "cli/cli-utils.h"
+#include "continuations.h"
+#include "arch-utils.h"
+#include "target-descriptions.h"
+#include "readline/tilde.h"
+#include "progspace-and-thread.h"
+
+/* Keep a registry of per-inferior data-pointers required by other GDB
+ modules. */
+
+DEFINE_REGISTRY (inferior, REGISTRY_ACCESS_FIELD)
+
+struct inferior *inferior_list = NULL;
static int highest_inferior_num;
-/* Print notices on inferior events (attach, detach, etc.), set with
- `set print inferior-events'. */
-static int print_inferior_events = 0;
+/* See inferior.h. */
+bool print_inferior_events = true;
+
+/* The Current Inferior. This is a strong reference. I.e., whenever
+ an inferior is the current inferior, its refcount is
+ incremented. */
+static struct inferior *current_inferior_ = NULL;
struct inferior*
current_inferior (void)
{
- struct inferior *inf = find_inferior_pid (ptid_get_pid (inferior_ptid));
- gdb_assert (inf);
- return inf;
+ return current_inferior_;
}
-static void
-free_inferior (struct inferior *inf)
+void
+set_current_inferior (struct inferior *inf)
{
- xfree (inf->private);
- xfree (inf);
+ /* There's always an inferior. */
+ gdb_assert (inf != NULL);
+
+ inf->incref ();
+ current_inferior_->decref ();
+ current_inferior_ = inf;
}
-void
-init_inferior_list (void)
+private_inferior::~private_inferior () = default;
+
+inferior::~inferior ()
{
- struct inferior *inf, *infnext;
+ inferior *inf = this;
- highest_inferior_num = 0;
- if (!inferior_list)
- return;
+ discard_all_inferior_continuations (inf);
+ inferior_free_data (inf);
+ xfree (inf->args);
+ xfree (inf->terminal);
+ target_desc_info_free (inf->tdesc_info);
+}
- for (inf = inferior_list; inf; inf = infnext)
- {
- infnext = inf->next;
- free_inferior (inf);
- }
+inferior::inferior (int pid_)
+ : num (++highest_inferior_num),
+ pid (pid_),
+ environment (gdb_environ::from_host_environ ()),
+ registry_data ()
+{
+ inferior_alloc_data (this);
- inferior_list = NULL;
+ m_target_stack.push (get_dummy_target ());
}
struct inferior *
add_inferior_silent (int pid)
{
- struct inferior *inf;
+ inferior *inf = new inferior (pid);
- inf = xmalloc (sizeof (*inf));
- memset (inf, 0, sizeof (*inf));
- inf->pid = pid;
+ if (inferior_list == NULL)
+ inferior_list = inf;
+ else
+ {
+ inferior *last;
+
+ for (last = inferior_list; last->next != NULL; last = last->next)
+ ;
+ last->next = inf;
+ }
- inf->stop_soon = NO_STOP_QUIETLY;
+ gdb::observers::inferior_added.notify (inf);
- inf->num = ++highest_inferior_num;
- inf->next = inferior_list;
- inferior_list = inf;
+ if (pid != 0)
+ inferior_appeared (inf, pid);
return inf;
}
struct inferior *inf = add_inferior_silent (pid);
if (print_inferior_events)
- printf_unfiltered (_("[New inferior %d]\n"), pid);
-
- return inf;
-}
-
-struct delete_thread_of_inferior_arg
-{
- int pid;
- int silent;
-};
-
-static int
-delete_thread_of_inferior (struct thread_info *tp, void *data)
-{
- struct delete_thread_of_inferior_arg *arg = data;
-
- if (ptid_get_pid (tp->ptid) == arg->pid)
{
- if (arg->silent)
- delete_thread_silent (tp->ptid);
+ if (pid != 0)
+ printf_unfiltered (_("[New inferior %d (%s)]\n"),
+ inf->num,
+ target_pid_to_str (ptid_t (pid)).c_str ());
else
- delete_thread (tp->ptid);
+ printf_unfiltered (_("[New inferior %d]\n"), inf->num);
}
- return 0;
+ return inf;
}
-/* If SILENT then be quiet -- don't announce a inferior death, or the
- exit of its threads. */
-static void
-delete_inferior_1 (int pid, int silent)
+void
+delete_inferior (struct inferior *todel)
{
struct inferior *inf, *infprev;
- struct delete_thread_of_inferior_arg arg = { pid, silent };
infprev = NULL;
for (inf = inferior_list; inf; infprev = inf, inf = inf->next)
- if (inf->pid == pid)
+ if (inf == todel)
break;
if (!inf)
return;
+ for (thread_info *tp : inf->threads_safe ())
+ delete_thread_silent (tp);
+
if (infprev)
infprev->next = inf->next;
else
inferior_list = inf->next;
- free_inferior (inf);
+ gdb::observers::inferior_removed.notify (inf);
- arg.pid = pid;
- arg.silent = silent;
+ /* If this program space is rendered useless, remove it. */
+ if (program_space_empty_p (inf->pspace))
+ delete_program_space (inf->pspace);
- iterate_over_threads (delete_thread_of_inferior, &arg);
+ delete inf;
}
-void
-delete_inferior (int pid)
+/* If SILENT then be quiet -- don't announce a inferior exit, or the
+ exit of its threads. */
+
+static void
+exit_inferior_1 (struct inferior *inftoex, int silent)
{
- delete_inferior_1 (pid, 0);
+ struct inferior *inf;
- if (print_inferior_events)
- printf_unfiltered (_("[Inferior %d exited]\n"), pid);
+ for (inf = inferior_list; inf; inf = inf->next)
+ if (inf == inftoex)
+ break;
+
+ if (!inf)
+ return;
+
+ for (thread_info *tp : inf->threads_safe ())
+ {
+ if (silent)
+ delete_thread_silent (tp);
+ else
+ delete_thread (tp);
+ }
+
+ gdb::observers::inferior_exit.notify (inf);
+
+ inf->pid = 0;
+ inf->fake_pid_p = false;
+ inf->priv = NULL;
+
+ if (inf->vfork_parent != NULL)
+ {
+ inf->vfork_parent->vfork_child = NULL;
+ inf->vfork_parent = NULL;
+ }
+ if (inf->vfork_child != NULL)
+ {
+ inf->vfork_child->vfork_parent = NULL;
+ inf->vfork_child = NULL;
+ }
+
+ inf->pending_detach = 0;
+ /* Reset it. */
+ inf->control = inferior_control_state (NO_STOP_QUIETLY);
+
+ /* Clear the register cache and the frame cache. */
+ registers_changed ();
+ reinit_frame_cache ();
+}
+
+void
+exit_inferior (inferior *inf)
+{
+ exit_inferior_1 (inf, 0);
}
void
-delete_inferior_silent (int pid)
+exit_inferior_silent (inferior *inf)
{
- delete_inferior_1 (pid, 1);
+ exit_inferior_1 (inf, 1);
}
+/* See inferior.h. */
+
void
-detach_inferior (int pid)
+detach_inferior (inferior *inf)
{
- delete_inferior_1 (pid, 1);
+ /* Save the pid, since exit_inferior_1 will reset it. */
+ int pid = inf->pid;
+
+ exit_inferior_1 (inf, 0);
if (print_inferior_events)
- printf_unfiltered (_("[Inferior %d detached]\n"), pid);
+ printf_unfiltered (_("[Inferior %d (%s) detached]\n"),
+ inf->num,
+ target_pid_to_str (ptid_t (pid)).c_str ());
}
void
-discard_all_inferiors (void)
+inferior_appeared (struct inferior *inf, int pid)
{
- struct inferior *inf, *infnext;
+ /* If this is the first inferior with threads, reset the global
+ thread id. */
+ delete_exited_threads ();
+ if (!any_thread_p ())
+ init_thread_list ();
- for (inf = inferior_list; inf; inf = infnext)
- {
- infnext = inf->next;
- delete_inferior_silent (inf->pid);
- }
+ inf->pid = pid;
+ inf->has_exit_code = 0;
+ inf->exit_code = 0;
+
+ gdb::observers::inferior_appeared.notify (inf);
}
-static struct inferior *
-find_inferior_id (int num)
+void
+discard_all_inferiors (void)
{
- struct inferior *inf;
+ for (inferior *inf : all_non_exited_inferiors ())
+ exit_inferior_silent (inf);
+}
- for (inf = inferior_list; inf; inf = inf->next)
+struct inferior *
+find_inferior_id (int num)
+{
+ for (inferior *inf : all_inferiors ())
if (inf->num == num)
return inf;
}
struct inferior *
-find_inferior_pid (int pid)
+find_inferior_pid (process_stratum_target *targ, int pid)
{
- struct inferior *inf;
+ /* Looking for inferior pid == 0 is always wrong, and indicative of
+ a bug somewhere else. There may be more than one with pid == 0,
+ for instance. */
+ gdb_assert (pid != 0);
- for (inf = inferior_list; inf; inf = inf->next)
+ for (inferior *inf : all_inferiors (targ))
if (inf->pid == pid)
return inf;
return NULL;
}
+/* See inferior.h */
+
+struct inferior *
+find_inferior_ptid (process_stratum_target *targ, ptid_t ptid)
+{
+ return find_inferior_pid (targ, ptid.pid ());
+}
+
+/* See inferior.h. */
+
+struct inferior *
+find_inferior_for_program_space (struct program_space *pspace)
+{
+ struct inferior *cur_inf = current_inferior ();
+
+ if (cur_inf->pspace == pspace)
+ return cur_inf;
+
+ for (inferior *inf : all_inferiors ())
+ if (inf->pspace == pspace)
+ return inf;
+
+ return NULL;
+}
+
struct inferior *
iterate_over_inferiors (int (*callback) (struct inferior *, void *),
void *data)
{
- struct inferior *inf, *infnext;
-
- for (inf = inferior_list; inf; inf = infnext)
- {
- infnext = inf->next;
- if ((*callback) (inf, data))
- return inf;
- }
+ for (inferior *inf : all_inferiors_safe ())
+ if ((*callback) (inf, data))
+ return inf;
return NULL;
}
int
-valid_gdb_inferior_id (int num)
+have_inferiors (void)
{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->num == num)
- return 1;
+ for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ())
+ return 1;
return 0;
}
+/* Return the number of live inferiors. We account for the case
+ where an inferior might have a non-zero pid but no threads, as
+ in the middle of a 'mourn' operation. */
+
int
-pid_to_gdb_inferior_id (int pid)
+number_of_live_inferiors (process_stratum_target *proc_target)
{
- struct inferior *inf;
+ int num_inf = 0;
+
+ for (inferior *inf : all_non_exited_inferiors (proc_target))
+ if (inf->has_execution ())
+ for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ())
+ {
+ /* Found a live thread in this inferior, go to the next
+ inferior. */
+ ++num_inf;
+ break;
+ }
+
+ return num_inf;
+}
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid == pid)
- return inf->num;
+/* Return true if there is at least one live inferior. */
- return 0;
+int
+have_live_inferiors (void)
+{
+ return number_of_live_inferiors (NULL) > 0;
}
+/* Prune away any unused inferiors, and then prune away no longer used
+ program spaces. */
+
+void
+prune_inferiors (void)
+{
+ inferior *ss;
+
+ ss = inferior_list;
+ while (ss)
+ {
+ if (!ss->deletable ()
+ || !ss->removable
+ || ss->pid != 0)
+ {
+ ss = ss->next;
+ continue;
+ }
+
+ inferior *ss_next = ss->next;
+ delete_inferior (ss);
+ ss = ss_next;
+ }
+}
+
+/* Simply returns the count of inferiors. */
+
int
-gdb_inferior_id_to_pid (int num)
+number_of_inferiors (void)
+{
+ auto rng = all_inferiors ();
+ return std::distance (rng.begin (), rng.end ());
+}
+
+/* Converts an inferior process id to a string. Like
+ target_pid_to_str, but special cases the null process. */
+
+static std::string
+inferior_pid_to_str (int pid)
{
- struct inferior *inferior = find_inferior_id (num);
- if (inferior)
- return inferior->pid;
+ if (pid != 0)
+ return target_pid_to_str (ptid_t (pid));
else
- return -1;
+ return _("<null>");
}
-int
-in_inferior_list (int pid)
+/* See inferior.h. */
+
+void
+print_selected_inferior (struct ui_out *uiout)
{
- struct inferior *inf;
+ struct inferior *inf = current_inferior ();
+ const char *filename = inf->pspace->pspace_exec_filename;
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid == pid)
- return 1;
+ if (filename == NULL)
+ filename = _("<noexec>");
- return 0;
+ uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"),
+ inf->num, inferior_pid_to_str (inf->pid).c_str (), filename);
}
-int
-have_inferiors (void)
+/* Helper for print_inferior. Returns the 'connection-id' string for
+ PROC_TARGET. */
+
+static std::string
+uiout_field_connection (process_stratum_target *proc_target)
{
- return inferior_list != NULL;
+ if (proc_target == NULL)
+ {
+ return {};
+ }
+ else if (proc_target->connection_string () != NULL)
+ {
+ return string_printf ("%d (%s %s)",
+ proc_target->connection_number,
+ proc_target->shortname (),
+ proc_target->connection_string ());
+ }
+ else
+ {
+ return string_printf ("%d (%s)",
+ proc_target->connection_number,
+ proc_target->shortname ());
+ }
}
/* Prints the list of inferiors and their details on UIOUT. This is a
version of 'info_inferior_command' suitable for use from MI.
- If REQUESTED_INFERIOR is not -1, it's the GDB id of the inferior that
- should be printed. Otherwise, all inferiors are printed. */
-void
-print_inferior (struct ui_out *uiout, int requested_inferior)
+ If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the
+ inferiors that should be printed. Otherwise, all inferiors are
+ printed. */
+
+static void
+print_inferior (struct ui_out *uiout, const char *requested_inferiors)
{
- struct inferior *inf;
- struct cleanup *old_chain;
+ int inf_count = 0;
+ size_t connection_id_len = 20;
- old_chain = make_cleanup_ui_out_list_begin_end (uiout, "inferiors");
+ /* Compute number of inferiors we will print. */
+ for (inferior *inf : all_inferiors ())
+ {
+ if (!number_is_in_list (requested_inferiors, inf->num))
+ continue;
- for (inf = inferior_list; inf; inf = inf->next)
+ std::string conn = uiout_field_connection (inf->process_target ());
+ if (connection_id_len < conn.size ())
+ connection_id_len = conn.size ();
+
+ ++inf_count;
+ }
+
+ if (inf_count == 0)
{
- struct cleanup *chain2;
+ uiout->message ("No inferiors.\n");
+ return;
+ }
- if (requested_inferior != -1 && inf->num != requested_inferior)
+ ui_out_emit_table table_emitter (uiout, 5, inf_count, "inferiors");
+ uiout->table_header (1, ui_left, "current", "");
+ uiout->table_header (4, ui_left, "number", "Num");
+ uiout->table_header (17, ui_left, "target-id", "Description");
+ uiout->table_header (connection_id_len, ui_left,
+ "connection-id", "Connection");
+ uiout->table_header (17, ui_left, "exec", "Executable");
+
+ uiout->table_body ();
+ for (inferior *inf : all_inferiors ())
+ {
+ if (!number_is_in_list (requested_inferiors, inf->num))
continue;
- chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+ ui_out_emit_tuple tuple_emitter (uiout, NULL);
- if (inf->pid == ptid_get_pid (inferior_ptid))
- ui_out_text (uiout, "* ");
+ if (inf == current_inferior ())
+ uiout->field_string ("current", "*");
else
- ui_out_text (uiout, " ");
+ uiout->field_skip ("current");
+
+ uiout->field_signed ("number", inf->num);
+
+ uiout->field_string ("target-id", inferior_pid_to_str (inf->pid));
- ui_out_field_int (uiout, "id", inf->num);
- ui_out_text (uiout, " ");
- ui_out_field_int (uiout, "target-id", inf->pid);
+ std::string conn = uiout_field_connection (inf->process_target ());
+ uiout->field_string ("connection-id", conn.c_str ());
- ui_out_text (uiout, "\n");
- do_cleanups (chain2);
+ if (inf->pspace->pspace_exec_filename != NULL)
+ uiout->field_string ("exec", inf->pspace->pspace_exec_filename);
+ else
+ uiout->field_skip ("exec");
+
+ /* Print extra info that isn't really fit to always present in
+ tabular form. Currently we print the vfork parent/child
+ relationships, if any. */
+ if (inf->vfork_parent)
+ {
+ uiout->text (_("\n\tis vfork child of inferior "));
+ uiout->field_signed ("vfork-parent", inf->vfork_parent->num);
+ }
+ if (inf->vfork_child)
+ {
+ uiout->text (_("\n\tis vfork parent of inferior "));
+ uiout->field_signed ("vfork-child", inf->vfork_child->num);
+ }
+
+ uiout->text ("\n");
}
+}
- do_cleanups (old_chain);
+static void
+detach_inferior_command (const char *args, int from_tty)
+{
+ if (!args || !*args)
+ error (_("Requires argument (inferior id(s) to detach)"));
+
+ number_or_range_parser parser (args);
+ while (!parser.finished ())
+ {
+ int num = parser.get_number ();
+
+ inferior *inf = find_inferior_id (num);
+ if (inf == NULL)
+ {
+ warning (_("Inferior ID %d not known."), num);
+ continue;
+ }
+
+ if (inf->pid == 0)
+ {
+ warning (_("Inferior ID %d is not running."), num);
+ continue;
+ }
+
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
+ {
+ warning (_("Inferior ID %d has no threads."), num);
+ continue;
+ }
+
+ switch_to_thread (tp);
+
+ detach_command (NULL, from_tty);
+ }
+}
+
+static void
+kill_inferior_command (const char *args, int from_tty)
+{
+ if (!args || !*args)
+ error (_("Requires argument (inferior id(s) to kill)"));
+
+ number_or_range_parser parser (args);
+ while (!parser.finished ())
+ {
+ int num = parser.get_number ();
+
+ inferior *inf = find_inferior_id (num);
+ if (inf == NULL)
+ {
+ warning (_("Inferior ID %d not known."), num);
+ continue;
+ }
+
+ if (inf->pid == 0)
+ {
+ warning (_("Inferior ID %d is not running."), num);
+ continue;
+ }
+
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
+ {
+ warning (_("Inferior ID %d has no threads."), num);
+ continue;
+ }
+
+ switch_to_thread (tp);
+
+ target_kill ();
+ }
+
+ bfd_cache_close_all ();
+}
+
+/* See inferior.h. */
+
+void
+switch_to_inferior_no_thread (inferior *inf)
+{
+ set_current_inferior (inf);
+ switch_to_no_thread ();
+ set_current_program_space (inf->pspace);
+}
+
+static void
+inferior_command (const char *args, int from_tty)
+{
+ struct inferior *inf;
+ int num;
+
+ num = parse_and_eval_long (args);
+
+ inf = find_inferior_id (num);
+ if (inf == NULL)
+ error (_("Inferior ID %d not known."), num);
+
+ if (inf->pid != 0)
+ {
+ if (inf != current_inferior ())
+ {
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
+ error (_("Inferior has no threads."));
+
+ switch_to_thread (tp);
+ }
+
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_INFERIOR
+ | USER_SELECTED_THREAD
+ | USER_SELECTED_FRAME);
+ }
+ else
+ {
+ switch_to_inferior_no_thread (inf);
+
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_INFERIOR);
+ }
}
/* Print information about currently known inferiors. */
static void
-info_inferiors_command (char *arg, int from_tty)
+info_inferiors_command (const char *args, int from_tty)
+{
+ print_inferior (current_uiout, args);
+}
+
+/* remove-inferior ID */
+
+static void
+remove_inferior_command (const char *args, int from_tty)
{
- print_inferior (uiout, -1);
+ if (args == NULL || *args == '\0')
+ error (_("Requires an argument (inferior id(s) to remove)"));
+
+ number_or_range_parser parser (args);
+ while (!parser.finished ())
+ {
+ int num = parser.get_number ();
+ struct inferior *inf = find_inferior_id (num);
+
+ if (inf == NULL)
+ {
+ warning (_("Inferior ID %d not known."), num);
+ continue;
+ }
+
+ if (!inf->deletable ())
+ {
+ warning (_("Can not remove current inferior %d."), num);
+ continue;
+ }
+
+ if (inf->pid != 0)
+ {
+ warning (_("Can not remove active inferior %d."), num);
+ continue;
+ }
+
+ delete_inferior (inf);
+ }
+}
+
+struct inferior *
+add_inferior_with_spaces (void)
+{
+ struct address_space *aspace;
+ struct program_space *pspace;
+ struct inferior *inf;
+ struct gdbarch_info info;
+
+ /* If all inferiors share an address space on this system, this
+ doesn't really return a new address space; otherwise, it
+ really does. */
+ aspace = maybe_new_address_space ();
+ pspace = new program_space (aspace);
+ inf = add_inferior (0);
+ inf->pspace = pspace;
+ inf->aspace = pspace->aspace;
+
+ /* Setup the inferior's initial arch, based on information obtained
+ from the global "set ..." options. */
+ gdbarch_info_init (&info);
+ inf->gdbarch = gdbarch_find_by_info (info);
+ /* The "set ..." options reject invalid settings, so we should
+ always have a valid arch by now. */
+ gdb_assert (inf->gdbarch != NULL);
+
+ return inf;
+}
+
+/* Switch to inferior NEW_INF, a new inferior, and unless
+ NO_CONNECTION is true, push the process_stratum_target of ORG_INF
+ to NEW_INF. */
+
+static void
+switch_to_inferior_and_push_target (inferior *new_inf,
+ bool no_connection, inferior *org_inf)
+{
+ process_stratum_target *proc_target = org_inf->process_target ();
+
+ /* Switch over temporarily, while reading executable and
+ symbols. */
+ switch_to_inferior_no_thread (new_inf);
+
+ /* Reuse the target for new inferior. */
+ if (!no_connection && proc_target != NULL)
+ {
+ push_target (proc_target);
+ if (proc_target->connection_string () != NULL)
+ printf_filtered (_("Added inferior %d on connection %d (%s %s)\n"),
+ new_inf->num,
+ proc_target->connection_number,
+ proc_target->shortname (),
+ proc_target->connection_string ());
+ else
+ printf_filtered (_("Added inferior %d on connection %d (%s)\n"),
+ new_inf->num,
+ proc_target->connection_number,
+ proc_target->shortname ());
+ }
+ else
+ printf_filtered (_("Added inferior %d\n"), new_inf->num);
+}
+
+/* add-inferior [-copies N] [-exec FILENAME] [-no-connection] */
+
+static void
+add_inferior_command (const char *args, int from_tty)
+{
+ int i, copies = 1;
+ gdb::unique_xmalloc_ptr<char> exec;
+ symfile_add_flags add_flags = 0;
+ bool no_connection = false;
+
+ if (from_tty)
+ add_flags |= SYMFILE_VERBOSE;
+
+ if (args)
+ {
+ gdb_argv built_argv (args);
+
+ for (char **argv = built_argv.get (); *argv != NULL; argv++)
+ {
+ if (**argv == '-')
+ {
+ if (strcmp (*argv, "-copies") == 0)
+ {
+ ++argv;
+ if (!*argv)
+ error (_("No argument to -copies"));
+ copies = parse_and_eval_long (*argv);
+ }
+ else if (strcmp (*argv, "-no-connection") == 0)
+ no_connection = true;
+ else if (strcmp (*argv, "-exec") == 0)
+ {
+ ++argv;
+ if (!*argv)
+ error (_("No argument to -exec"));
+ exec.reset (tilde_expand (*argv));
+ }
+ }
+ else
+ error (_("Invalid argument"));
+ }
+ }
+
+ inferior *orginf = current_inferior ();
+
+ scoped_restore_current_pspace_and_thread restore_pspace_thread;
+
+ for (i = 0; i < copies; ++i)
+ {
+ inferior *inf = add_inferior_with_spaces ();
+
+ switch_to_inferior_and_push_target (inf, no_connection, orginf);
+
+ if (exec != NULL)
+ {
+ exec_file_attach (exec.get (), from_tty);
+ symbol_file_add_main (exec.get (), add_flags);
+ }
+ }
+}
+
+/* clone-inferior [-copies N] [ID] [-no-connection] */
+
+static void
+clone_inferior_command (const char *args, int from_tty)
+{
+ int i, copies = 1;
+ struct inferior *orginf = NULL;
+ bool no_connection = false;
+
+ if (args)
+ {
+ gdb_argv built_argv (args);
+
+ char **argv = built_argv.get ();
+ for (; *argv != NULL; argv++)
+ {
+ if (**argv == '-')
+ {
+ if (strcmp (*argv, "-copies") == 0)
+ {
+ ++argv;
+ if (!*argv)
+ error (_("No argument to -copies"));
+ copies = parse_and_eval_long (*argv);
+
+ if (copies < 0)
+ error (_("Invalid copies number"));
+ }
+ else if (strcmp (*argv, "-no-connection") == 0)
+ no_connection = true;
+ }
+ else
+ {
+ if (orginf == NULL)
+ {
+ int num;
+
+ /* The first non-option (-) argument specified the
+ program space ID. */
+ num = parse_and_eval_long (*argv);
+ orginf = find_inferior_id (num);
+
+ if (orginf == NULL)
+ error (_("Inferior ID %d not known."), num);
+ continue;
+ }
+ else
+ error (_("Invalid argument"));
+ }
+ }
+ }
+
+ /* If no inferior id was specified, then the user wants to clone the
+ current inferior. */
+ if (orginf == NULL)
+ orginf = current_inferior ();
+
+ scoped_restore_current_pspace_and_thread restore_pspace_thread;
+
+ for (i = 0; i < copies; ++i)
+ {
+ struct address_space *aspace;
+ struct program_space *pspace;
+ struct inferior *inf;
+
+ /* If all inferiors share an address space on this system, this
+ doesn't really return a new address space; otherwise, it
+ really does. */
+ aspace = maybe_new_address_space ();
+ pspace = new program_space (aspace);
+ inf = add_inferior (0);
+ inf->pspace = pspace;
+ inf->aspace = pspace->aspace;
+ inf->gdbarch = orginf->gdbarch;
+
+ switch_to_inferior_and_push_target (inf, no_connection, orginf);
+
+ /* If the original inferior had a user specified target
+ description, make the clone use it too. */
+ if (target_desc_info_from_user_p (inf->tdesc_info))
+ copy_inferior_target_desc_info (inf, orginf);
+
+ clone_program_space (pspace, orginf->pspace);
+ }
}
/* Print notices when new inferiors are created and die. */
fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value);
}
+/* Return a new value for the selected inferior's id. */
+
+static struct value *
+inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var,
+ void *ignore)
+{
+ struct inferior *inf = current_inferior ();
+
+ return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num);
+}
+
+/* Implementation of `$_inferior' variable. */
+
+static const struct internalvar_funcs inferior_funcs =
+{
+ inferior_id_make_value,
+ NULL,
+ NULL
+};
+
+\f
+
void
-_initialize_inferiors (void)
+initialize_inferiors (void)
{
+ struct cmd_list_element *c = NULL;
+
+ /* There's always one inferior. Note that this function isn't an
+ automatic _initialize_foo function, since other _initialize_foo
+ routines may need to install their per-inferior data keys. We
+ can only allocate an inferior when all those modules have done
+ that. Do this after initialize_progspace, due to the
+ current_program_space reference. */
+ current_inferior_ = add_inferior_silent (0);
+ current_inferior_->incref ();
+ current_inferior_->pspace = current_program_space;
+ current_inferior_->aspace = current_program_space->aspace;
+ /* The architecture will be initialized shortly, by
+ initialize_current_architecture. */
+
add_info ("inferiors", info_inferiors_command,
- _("IDs of currently known inferiors."));
+ _("Print a list of inferiors being managed.\n\
+Usage: info inferiors [ID]...\n\
+If IDs are specified, the list is limited to just those inferiors.\n\
+By default all inferiors are displayed."));
+
+ c = add_com ("add-inferior", no_class, add_inferior_command, _("\
+Add a new inferior.\n\
+Usage: add-inferior [-copies N] [-exec FILENAME] [-no-connection]\n\
+N is the optional number of inferiors to add, default is 1.\n\
+FILENAME is the file name of the executable to use\n\
+as main program.\n\
+By default, the new inferior inherits the current inferior's connection.\n\
+If -no-connection is specified, the new inferior begins with\n\
+no target connection yet."));
+ set_cmd_completer (c, filename_completer);
+
+ add_com ("remove-inferiors", no_class, remove_inferior_command, _("\
+Remove inferior ID (or list of IDs).\n\
+Usage: remove-inferiors ID..."));
+
+ add_com ("clone-inferior", no_class, clone_inferior_command, _("\
+Clone inferior ID.\n\
+Usage: clone-inferior [-copies N] [-no-connection] [ID]\n\
+Add N copies of inferior ID. The new inferiors have the same\n\
+executable loaded as the copied inferior. If -copies is not specified,\n\
+adds 1 copy. If ID is not specified, it is the current inferior\n\
+that is cloned.\n\
+By default, the new inferiors inherit the copied inferior's connection.\n\
+If -no-connection is specified, the new inferiors begin with\n\
+no target connection yet."));
+
+ add_cmd ("inferiors", class_run, detach_inferior_command, _("\
+Detach from inferior ID (or list of IDS).\n\
+Usage; detach inferiors ID..."),
+ &detachlist);
+
+ add_cmd ("inferiors", class_run, kill_inferior_command, _("\
+Kill inferior ID (or list of IDs).\n\
+Usage: kill inferiors ID..."),
+ &killlist);
+
+ add_cmd ("inferior", class_run, inferior_command, _("\
+Use this command to switch between inferiors.\n\
+Usage: inferior ID\n\
+The new inferior ID must be currently known."),
+ &cmdlist);
add_setshow_boolean_cmd ("inferior-events", no_class,
&print_inferior_events, _("\
-Set printing of inferior events (e.g., inferior start and exit)."), _("\
-Show printing of inferior events (e.g., inferior start and exit)."), NULL,
+Set printing of inferior events (such as inferior start and exit)."), _("\
+Show printing of inferior events (such as inferior start and exit)."), NULL,
NULL,
show_print_inferior_events,
&setprintlist, &showprintlist);
+
+ create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff