binutils-gdb/gdb/inferior.c
Tom Tromey 268a13a5a3 Rename common to gdbsupport
This is the next patch in the ongoing series to move gdbsever to the
top level.

This patch just renames the "common" directory.  The idea is to do
this move in two parts: first rename the directory (this patch), then
move the directory to the top.  This approach makes the patches a bit
more tractable.

I chose the name "gdbsupport" for the directory.  However, as this
patch was largely written by sed, we could pick a new name without too
much difficulty.

Tested by the buildbot.

gdb/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* contrib/ari/gdb_ari.sh: Change common to gdbsupport.
	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* gdbsupport: Rename from common.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES)
	(HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to
	gdbsupport.
	* aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c,
	amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c,
	amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c,
	amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c,
	amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c,
	arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c,
	arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c,
	arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c,
	arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c,
	auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h,
	btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c,
	charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c,
	cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c,
	coff-pe-read.c, command.h, compile/compile-c-support.c,
	compile/compile-c.h, compile/compile-cplus-symbols.c,
	compile/compile-cplus-types.c, compile/compile-cplus.h,
	compile/compile-loc2c.c, compile/compile.c, completer.c,
	completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c,
	cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c,
	darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c,
	disasm.h, dtrace-probe.c, dwarf-index-cache.c,
	dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c,
	dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c,
	event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c,
	features/aarch64-core.c, features/aarch64-fpu.c,
	features/aarch64-pauth.c, features/aarch64-sve.c,
	features/i386/32bit-avx.c, features/i386/32bit-avx512.c,
	features/i386/32bit-core.c, features/i386/32bit-linux.c,
	features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c,
	features/i386/32bit-segments.c, features/i386/32bit-sse.c,
	features/i386/64bit-avx.c, features/i386/64bit-avx512.c,
	features/i386/64bit-core.c, features/i386/64bit-linux.c,
	features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c,
	features/i386/64bit-segments.c, features/i386/64bit-sse.c,
	features/i386/x32-core.c, features/riscv/32bit-cpu.c,
	features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c,
	features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c,
	features/riscv/64bit-fpu.c, features/tic6x-c6xp.c,
	features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h,
	findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h,
	gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c,
	gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c,
	go32-nat.c, guile/guile.c, guile/scm-ports.c,
	guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c,
	i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c,
	i386-linux-tdep.c, i386-tdep.c, i387-tdep.c,
	ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c,
	inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h,
	inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h,
	inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c,
	linux-tdep.c, linux-thread-db.c, location.c, machoread.c,
	macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h,
	mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c,
	mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h,
	minsyms.c, mips-linux-tdep.c, namespace.h,
	nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h,
	nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c,
	nat/amd64-linux-siginfo.c, nat/fork-inferior.c,
	nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c,
	nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c,
	nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h,
	nat/linux-waitpid.c, nat/mips-linux-watch.c,
	nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c,
	nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c,
	nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h,
	obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c,
	parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c,
	procfs.c, producer.c, progspace.h, psymtab.h,
	python/py-framefilter.c, python/py-inferior.c, python/py-ref.h,
	python/py-type.c, python/python.c, record-btrace.c, record-full.c,
	record.c, record.h, regcache-dump.c, regcache.c, regcache.h,
	remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c,
	riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c,
	selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c,
	ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c,
	source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c,
	stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h,
	symtab.c, symtab.h, target-descriptions.c, target-descriptions.h,
	target-memory.c, target.c, target.h, target/waitstatus.c,
	target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c,
	top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c,
	tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h,
	unittests/array-view-selftests.c,
	unittests/child-path-selftests.c, unittests/cli-utils-selftests.c,
	unittests/common-utils-selftests.c,
	unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c,
	unittests/format_pieces-selftests.c,
	unittests/function-view-selftests.c,
	unittests/lookup_name_info-selftests.c,
	unittests/memory-map-selftests.c, unittests/memrange-selftests.c,
	unittests/mkdir-recursive-selftests.c,
	unittests/observable-selftests.c,
	unittests/offset-type-selftests.c, unittests/optional-selftests.c,
	unittests/parse-connection-spec-selftests.c,
	unittests/ptid-selftests.c, unittests/rsp-low-selftests.c,
	unittests/scoped_fd-selftests.c,
	unittests/scoped_mmap-selftests.c,
	unittests/scoped_restore-selftests.c,
	unittests/string_view-selftests.c, unittests/style-selftests.c,
	unittests/tracepoint-selftests.c, unittests/unpack-selftests.c,
	unittests/utils-selftests.c, unittests/xml-utils-selftests.c,
	utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c,
	value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c,
	xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c,
	xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport.

gdb/gdbserver/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS)
	(version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change
	common to gdbsupport.
	* ax.c, event-loop.c, fork-child.c, gdb_proc_service.h,
	gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c,
	inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c,
	linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c,
	linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c,
	linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h,
	nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c,
	server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h,
	thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change
	common to gdbsupport.
2019-07-09 07:45:38 -06:00

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/* Multi-process control for GDB, the GNU debugger.
Copyright (C) 2008-2019 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 "exec.h"
#include "inferior.h"
#include "target.h"
#include "command.h"
#include "completer.h"
#include "gdbcmd.h"
#include "gdbthread.h"
#include "ui-out.h"
#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;
/* See inferior.h. */
int print_inferior_events = 1;
/* 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)
{
return current_inferior_;
}
void
set_current_inferior (struct inferior *inf)
{
/* There's always an inferior. */
gdb_assert (inf != NULL);
inf->incref ();
current_inferior_->decref ();
current_inferior_ = inf;
}
private_inferior::~private_inferior () = default;
inferior::~inferior ()
{
inferior *inf = this;
discard_all_inferior_continuations (inf);
inferior_free_data (inf);
xfree (inf->args);
xfree (inf->terminal);
target_desc_info_free (inf->tdesc_info);
}
inferior::inferior (int pid_)
: num (++highest_inferior_num),
pid (pid_),
environment (gdb_environ::from_host_environ ()),
registry_data ()
{
inferior_alloc_data (this);
}
struct inferior *
add_inferior_silent (int pid)
{
inferior *inf = new inferior (pid);
if (inferior_list == NULL)
inferior_list = inf;
else
{
inferior *last;
for (last = inferior_list; last->next != NULL; last = last->next)
;
last->next = inf;
}
gdb::observers::inferior_added.notify (inf);
if (pid != 0)
inferior_appeared (inf, pid);
return inf;
}
struct inferior *
add_inferior (int pid)
{
struct inferior *inf = add_inferior_silent (pid);
if (print_inferior_events)
{
if (pid != 0)
printf_unfiltered (_("[New inferior %d (%s)]\n"),
inf->num,
target_pid_to_str (ptid_t (pid)).c_str ());
else
printf_unfiltered (_("[New inferior %d]\n"), inf->num);
}
return inf;
}
void
delete_inferior (struct inferior *todel)
{
struct inferior *inf, *infprev;
infprev = NULL;
for (inf = inferior_list; inf; infprev = inf, inf = inf->next)
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;
gdb::observers::inferior_removed.notify (inf);
/* If this program space is rendered useless, remove it. */
if (program_space_empty_p (inf->pspace))
delete_program_space (inf->pspace);
delete inf;
}
/* 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)
{
struct inferior *inf;
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
exit_inferior_silent (int pid)
{
struct inferior *inf = find_inferior_pid (pid);
exit_inferior_1 (inf, 1);
}
void
exit_inferior_silent (inferior *inf)
{
exit_inferior_1 (inf, 1);
}
/* See inferior.h. */
void
detach_inferior (inferior *inf)
{
/* 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 (%s) detached]\n"),
inf->num,
target_pid_to_str (ptid_t (pid)).c_str ());
}
void
inferior_appeared (struct inferior *inf, int pid)
{
/* If this is the first inferior with threads, reset the global
thread id. */
if (!any_thread_p ())
init_thread_list ();
inf->pid = pid;
inf->has_exit_code = 0;
inf->exit_code = 0;
gdb::observers::inferior_appeared.notify (inf);
}
void
discard_all_inferiors (void)
{
for (inferior *inf : all_non_exited_inferiors ())
exit_inferior_silent (inf);
}
struct inferior *
find_inferior_id (int num)
{
for (inferior *inf : all_inferiors ())
if (inf->num == num)
return inf;
return NULL;
}
struct inferior *
find_inferior_pid (int pid)
{
/* 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 (inferior *inf : all_inferiors ())
if (inf->pid == pid)
return inf;
return NULL;
}
/* See inferior.h */
struct inferior *
find_inferior_ptid (ptid_t ptid)
{
return find_inferior_pid (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)
{
for (inferior *inf : all_inferiors_safe ())
if ((*callback) (inf, data))
return inf;
return NULL;
}
int
have_inferiors (void)
{
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
number_of_live_inferiors (void)
{
int num_inf = 0;
for (inferior *inf : all_non_exited_inferiors ())
if (target_has_execution_1 (ptid_t (inf->pid)))
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;
}
/* Return true if there is at least one live inferior. */
int
have_live_inferiors (void)
{
return number_of_live_inferiors () > 0;
}
/* Prune away any unused inferiors, and then prune away no longer used
program spaces. */
void
prune_inferiors (void)
{
struct inferior *ss, **ss_link;
ss = inferior_list;
ss_link = &inferior_list;
while (ss)
{
if (!ss->deletable ()
|| !ss->removable
|| ss->pid != 0)
{
ss_link = &ss->next;
ss = *ss_link;
continue;
}
*ss_link = ss->next;
delete_inferior (ss);
ss = *ss_link;
}
}
/* Simply returns the count of inferiors. */
int
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)
{
if (pid != 0)
return target_pid_to_str (ptid_t (pid));
else
return _("<null>");
}
/* See inferior.h. */
void
print_selected_inferior (struct ui_out *uiout)
{
struct inferior *inf = current_inferior ();
const char *filename = inf->pspace->pspace_exec_filename;
if (filename == NULL)
filename = _("<noexec>");
uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"),
inf->num, inferior_pid_to_str (inf->pid).c_str (), filename);
}
/* 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_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)
{
int inf_count = 0;
/* Compute number of inferiors we will print. */
for (inferior *inf : all_inferiors ())
{
if (!number_is_in_list (requested_inferiors, inf->num))
continue;
++inf_count;
}
if (inf_count == 0)
{
uiout->message ("No inferiors.\n");
return;
}
ui_out_emit_table table_emitter (uiout, 4, 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 (17, ui_left, "exec", "Executable");
uiout->table_body ();
for (inferior *inf : all_inferiors ())
{
if (!number_is_in_list (requested_inferiors, inf->num))
continue;
ui_out_emit_tuple tuple_emitter (uiout, NULL);
if (inf == current_inferior ())
uiout->field_string ("current", "*");
else
uiout->field_skip ("current");
uiout->field_int ("number", inf->num);
uiout->field_string ("target-id", inferior_pid_to_str (inf->pid));
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_int ("vfork-parent", inf->vfork_parent->num);
}
if (inf->vfork_child)
{
uiout->text (_("\n\tis vfork parent of inferior "));
uiout->field_int ("vfork-child", inf->vfork_child->num);
}
uiout->text ("\n");
}
}
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 ();
}
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
{
set_current_inferior (inf);
switch_to_no_thread ();
set_current_program_space (inf->pspace);
gdb::observers::user_selected_context_changed.notify
(USER_SELECTED_INFERIOR);
}
}
/* Print information about currently known inferiors. */
static void
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)
{
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;
}
/* add-inferior [-copies N] [-exec FILENAME] */
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;
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, "-exec") == 0)
{
++argv;
if (!*argv)
error (_("No argument to -exec"));
exec.reset (tilde_expand (*argv));
}
}
else
error (_("Invalid argument"));
}
}
scoped_restore_current_pspace_and_thread restore_pspace_thread;
for (i = 0; i < copies; ++i)
{
struct inferior *inf = add_inferior_with_spaces ();
printf_filtered (_("Added inferior %d\n"), inf->num);
if (exec != NULL)
{
/* Switch over temporarily, while reading executable and
symbols.q. */
set_current_program_space (inf->pspace);
set_current_inferior (inf);
switch_to_no_thread ();
exec_file_attach (exec.get (), from_tty);
symbol_file_add_main (exec.get (), add_flags);
}
}
}
/* clone-inferior [-copies N] [ID] */
static void
clone_inferior_command (const char *args, int from_tty)
{
int i, copies = 1;
struct inferior *orginf = NULL;
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 (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;
/* 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);
printf_filtered (_("Added inferior %d.\n"), inf->num);
set_current_inferior (inf);
switch_to_no_thread ();
clone_program_space (pspace, orginf->pspace);
}
}
/* 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);
}
/* 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
};
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,
_("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]\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."));
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] [ID]\n\
Add N copies of inferior ID. The new inferior has 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."));
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 (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);
}