From b77209e0003218790c76f67c5ee3e5802168ecaa Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Mon, 22 Sep 2008 15:12:19 +0000 Subject: gdb/ * inferior.h: Forward declare struct ui_out. Forward declare struct private_inferior. (struct inferior): New. (init_inferior_list, add_inferior, add_inferior_silent) (delete_inferior, delete_inferior_silent, detach_inferior) (gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list) (valid_inferior_id, find_inferior_pid): New functions. (inferior_callback_func): New typedef. (iterate_over_inferiors, print_inferior, have_inferiors) (current_inferior): New functions. * inferior.c: New file. * Makefile.in (SFILES): Add inferior.c. (COMMON_OBS): Add inferior.o. gdb/doc/ * gdb.texinfo (Inferiors): New section. --- gdb/inferior.c | 332 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 332 insertions(+) create mode 100644 gdb/inferior.c (limited to 'gdb/inferior.c') diff --git a/gdb/inferior.c b/gdb/inferior.c new file mode 100644 index 0000000..2c9c0af --- /dev/null +++ b/gdb/inferior.c @@ -0,0 +1,332 @@ +/* Multi-process control for GDB, the GNU debugger. + + Copyright (C) 2008 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 . */ + +#include "defs.h" +#include "inferior.h" +#include "target.h" +#include "command.h" +#include "gdbcmd.h" +#include "gdbthread.h" +#include "ui-out.h" + +void _initialize_inferiors (void); + +static 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; + +struct inferior* +current_inferior (void) +{ + struct inferior *inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); + gdb_assert (inf); + return inf; +} + +static void +free_inferior (struct inferior *inf) +{ + xfree (inf->private); + xfree (inf); +} + +void +init_inferior_list (void) +{ + struct inferior *inf, *infnext; + + highest_inferior_num = 0; + if (!inferior_list) + return; + + for (inf = inferior_list; inf; inf = infnext) + { + infnext = inf->next; + free_inferior (inf); + } + + inferior_list = NULL; +} + +struct inferior * +add_inferior_silent (int pid) +{ + struct inferior *inf; + + inf = xmalloc (sizeof (*inf)); + memset (inf, 0, sizeof (*inf)); + inf->pid = pid; + + inf->num = ++highest_inferior_num; + inf->next = inferior_list; + inferior_list = inf; + + return inf; +} + +struct inferior * +add_inferior (int pid) +{ + 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); + else + delete_thread (tp->ptid); + } + + return 0; +} + +/* 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) +{ + 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) + break; + + if (!inf) + return; + + if (infprev) + infprev->next = inf->next; + else + inferior_list = inf->next; + + free_inferior (inf); + + arg.pid = pid; + arg.silent = silent; + + iterate_over_threads (delete_thread_of_inferior, &arg); +} + +void +delete_inferior (int pid) +{ + delete_inferior_1 (pid, 0); + + if (print_inferior_events) + printf_unfiltered (_("[Inferior %d exited]\n"), pid); +} + +void +delete_inferior_silent (int pid) +{ + delete_inferior_1 (pid, 1); +} + +void +detach_inferior (int pid) +{ + delete_inferior_1 (pid, 1); + + if (print_inferior_events) + printf_unfiltered (_("[Inferior %d detached]\n"), pid); +} + +static struct inferior * +find_inferior_id (int num) +{ + struct inferior *inf; + + for (inf = inferior_list; inf; inf = inf->next) + if (inf->num == num) + return inf; + + return NULL; +} + +struct inferior * +find_inferior_pid (int pid) +{ + struct inferior *inf; + + for (inf = inferior_list; inf; inf = inf->next) + if (inf->pid == pid) + 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; + } + + return NULL; +} + +int +valid_gdb_inferior_id (int num) +{ + struct inferior *inf; + + for (inf = inferior_list; inf; inf = inf->next) + if (inf->num == num) + return 1; + + return 0; +} + +int +pid_to_gdb_inferior_id (int pid) +{ + struct inferior *inf; + + for (inf = inferior_list; inf; inf = inf->next) + if (inf->pid == pid) + return inf->num; + + return 0; +} + +int +gdb_inferior_id_to_pid (int num) +{ + struct inferior *inferior = find_inferior_id (num); + if (inferior) + return inferior->pid; + else + return -1; +} + +int +in_inferior_list (int pid) +{ + struct inferior *inf; + + for (inf = inferior_list; inf; inf = inf->next) + if (inf->pid == pid) + return 1; + + return 0; +} + +int +have_inferiors (void) +{ + return inferior_list != NULL; +} + +/* 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) +{ + struct inferior *inf; + struct cleanup *old_chain; + + old_chain = make_cleanup_ui_out_list_begin_end (uiout, "inferiors"); + + for (inf = inferior_list; inf; inf = inf->next) + { + struct cleanup *chain2; + + if (requested_inferior != -1 && inf->num != requested_inferior) + continue; + + chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); + + if (inf->pid == ptid_get_pid (inferior_ptid)) + ui_out_text (uiout, "* "); + else + ui_out_text (uiout, " "); + + ui_out_field_int (uiout, "id", inf->num); + ui_out_text (uiout, " "); + ui_out_field_int (uiout, "target-id", inf->pid); + + ui_out_text (uiout, "\n"); + do_cleanups (chain2); + } + + do_cleanups (old_chain); +} + +/* Print information about currently known inferiors. */ + +static void +info_inferiors_command (char *arg, int from_tty) +{ + print_inferior (uiout, -1); +} + +/* Print notices when new inferiors are created and die. */ +static void +show_print_inferior_events (struct ui_file *file, int from_tty, + struct cmd_list_element *c, const char *value) +{ + fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); +} + +void +_initialize_inferiors (void) +{ + add_info ("inferiors", info_inferiors_command, + _("IDs of currently known inferiors.")); + + 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, + NULL, + show_print_inferior_events, + &setprintlist, &showprintlist); +} -- cgit v1.1