* target.c (target_async_permitted, target_async_permitted_1)
(set_maintenance_target_async_permitted)
(show_maintenance_target_async_permitted): New.
(initialize_targets): Register 'set target-async'.
* target.h (target_async_permitted): Declare.
* linux-nat.c (linux_nat_async_enabled)
(linux_nat_async_permitted, set_maintenance_linux_async_permitted)
(show_maintenance_linux_async_permitted): Remove.
(sigchld_handler, linux_nat_is_async_p, linux_nat_can_async_p)
(get_pending_events, linux_nat_async): Use target_async_permitted.
(linux_nat_set_async_mode): Remove, moving the only used bits
into...
(linux_nat_setup_async): This.
(_initialize_linux_nat): Do not register 'maint set linux-async'.
Use linux_nat_setup_async.
* remote.c (remote_async_permitted, remote_async_permitted_set)
(set_maintenance_remote_async_permitted)
(show_maintenance_remote_async_permitted): Remove.
(remote_open_1, remote_terminal_inferior, remote_can_async_p)
(remote_is_async_p): Use target_async_permitted.
(_initialize_remote): Don't register 'main set remote-async'.
* mi/mi-cmds.c (mi_cmds): Register -list-target-features.
* mi/mi-cmds.h (mi_cmd_list_target_features): New.
* mi/mi-main.c (mi_cmd_list_target_features): New.
This commit is contained in:
Vladimir Prus
parent
073120b913
commit
c6ebd6cf99
@ -1,3 +1,31 @@
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2008-08-19 Pedro Alves <pedro@codesourcery.com>
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Vladimir Prus <vladimir@codesourcery.com>
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* target.c (target_async_permitted, target_async_permitted_1)
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(set_maintenance_target_async_permitted)
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(show_maintenance_target_async_permitted): New.
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(initialize_targets): Register 'set target-async'.
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* target.h (target_async_permitted): Declare.
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* linux-nat.c (linux_nat_async_enabled)
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(linux_nat_async_permitted, set_maintenance_linux_async_permitted)
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(show_maintenance_linux_async_permitted): Remove.
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(sigchld_handler, linux_nat_is_async_p, linux_nat_can_async_p)
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(get_pending_events, linux_nat_async): Use target_async_permitted.
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(linux_nat_set_async_mode): Remove, moving the only used bits
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into...
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(linux_nat_setup_async): This.
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(_initialize_linux_nat): Do not register 'maint set linux-async'.
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Use linux_nat_setup_async.
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* remote.c (remote_async_permitted, remote_async_permitted_set)
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(set_maintenance_remote_async_permitted)
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(show_maintenance_remote_async_permitted): Remove.
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(remote_open_1, remote_terminal_inferior, remote_can_async_p)
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(remote_is_async_p): Use target_async_permitted.
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(_initialize_remote): Don't register 'main set remote-async'.
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* mi/mi-cmds.c (mi_cmds): Register -list-target-features.
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* mi/mi-cmds.h (mi_cmd_list_target_features): New.
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* mi/mi-main.c (mi_cmd_list_target_features): New.
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2008-08-19 Vladimir Prus <vladimir@codesourcery.com>
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* target.c (maybe_kill_then_attach)
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@ -1,3 +1,8 @@
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2008-08-19 Vladimir Prus <vladimir@codesourcery.com>
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* gdb.texinfo (Background execution): Adjust example
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(GDB/MI Miscellaneous Commands): Document -list-target-features.
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2008-08-19 Vladimir Prus <vladimir@codesourcery.com>
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* doc/gdb.texinfo (PowerPC): Fix typo.
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@ -4572,12 +4572,9 @@ independently and simultaneously.
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To enter non-stop mode, use this sequence of commands before you run
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or attach to your program:
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@c FIXME: can we fix this recipe to avoid the linux-async/remote-async details?
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@smallexample
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# Enable the async interface.
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# For target remote, use remote-async instead of linux-async.
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maint set linux-async 1
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set target-async 1
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# If using the CLI, pagination breaks non-stop.
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set pagination off
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@ -4710,7 +4707,7 @@ use @code{interrupt -a}.
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@end table
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You may need to explicitly enable async mode before you can use background
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execution commands. @xref{Maintenance Commands}, for details. If the
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execution commands, with the @code{set target-async 1} command. If the
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target doesn't support async mode, @value{GDBN} issues an error message
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if you attempt to use the background execution commands.
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@ -22640,6 +22637,34 @@ option to the @code{-break-insert} command.
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@end itemize
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@subheading The @code{-list-target-features} Command
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@findex -list-target-features
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Returns a list of particular features that are supported by the
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target. Those features affect the permitted MI commands, but
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unlike the features reported by the @code{-list-features} command, the
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features depend on which target GDB is using at the moment. Whenever
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a target can change, due to commands such as @code{-target-select},
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@code{-target-attach} or @code{-exec-run}, the list of target features
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may change, and the frontend should obtain it again.
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Example output:
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@smallexample
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(gdb) -list-features
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^done,result=["async"]
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@end smallexample
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The current list of features is:
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@table @samp
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@item async
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Indicates that the target is capable of asynchronous command
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execution, which means that @value{GDBN} will accept further commands
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while the target is running.
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@end table
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@subheading The @code{-interpreter-exec} Command
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@findex -interpreter-exec
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101
gdb/linux-nat.c
101
gdb/linux-nat.c
@ -276,9 +276,6 @@ static int linux_supports_tracevforkdone_flag = -1;
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/* Async mode support */
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/* True if async mode is currently on. */
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static int linux_nat_async_enabled;
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/* Zero if the async mode, although enabled, is masked, which means
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linux_nat_wait should behave as if async mode was off. */
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static int linux_nat_async_mask_value = 1;
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@ -3205,7 +3202,7 @@ linux_nat_pid_to_str (ptid_t ptid)
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static void
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sigchld_handler (int signo)
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{
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if (linux_nat_async_enabled
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if (target_async_permitted
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&& linux_nat_async_events_state != sigchld_sync
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&& signo == SIGCHLD)
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/* It is *always* a bug to hit this. */
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@ -3992,45 +3989,15 @@ linux_trad_target (CORE_ADDR (*register_u_offset)(struct gdbarch *, int, int))
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return t;
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}
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/* Controls if async mode is permitted. */
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static int linux_async_permitted = 0;
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/* The set command writes to this variable. If the inferior is
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executing, linux_nat_async_permitted is *not* updated. */
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static int linux_async_permitted_1 = 0;
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static void
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set_maintenance_linux_async_permitted (char *args, int from_tty,
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struct cmd_list_element *c)
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{
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if (target_has_execution)
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{
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linux_async_permitted_1 = linux_async_permitted;
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error (_("Cannot change this setting while the inferior is running."));
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}
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linux_async_permitted = linux_async_permitted_1;
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linux_nat_set_async_mode (linux_async_permitted);
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}
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static void
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show_maintenance_linux_async_permitted (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("\
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Controlling the GNU/Linux inferior in asynchronous mode is %s.\n"),
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value);
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}
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/* target_is_async_p implementation. */
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static int
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linux_nat_is_async_p (void)
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{
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/* NOTE: palves 2008-03-21: We're only async when the user requests
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it explicitly with the "maintenance set linux-async" command.
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it explicitly with the "maintenance set target-async" command.
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Someday, linux will always be async. */
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if (!linux_async_permitted)
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if (!target_async_permitted)
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return 0;
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return 1;
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@ -4042,9 +4009,9 @@ static int
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linux_nat_can_async_p (void)
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{
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/* NOTE: palves 2008-03-21: We're only async when the user requests
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it explicitly with the "maintenance set linux-async" command.
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it explicitly with the "maintenance set target-async" command.
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Someday, linux will always be async. */
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if (!linux_async_permitted)
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if (!target_async_permitted)
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return 0;
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/* See target.h/target_async_mask. */
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@ -4125,7 +4092,7 @@ get_pending_events (void)
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{
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int status, options, pid;
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if (!linux_nat_async_enabled
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if (!target_async_permitted
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|| linux_nat_async_events_state != sigchld_async)
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internal_error (__FILE__, __LINE__,
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"get_pending_events called with async masked");
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@ -4329,7 +4296,7 @@ static void
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linux_nat_async (void (*callback) (enum inferior_event_type event_type,
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void *context), void *context)
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{
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if (linux_nat_async_mask_value == 0 || !linux_nat_async_enabled)
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if (linux_nat_async_mask_value == 0 || !target_async_permitted)
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internal_error (__FILE__, __LINE__,
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"Calling target_async when async is masked");
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@ -4353,35 +4320,6 @@ linux_nat_async (void (*callback) (enum inferior_event_type event_type,
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return;
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}
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/* Enable/Disable async mode. */
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static void
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linux_nat_set_async_mode (int on)
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{
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if (linux_nat_async_enabled != on)
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{
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if (on)
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{
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gdb_assert (waitpid_queue == NULL);
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if (pipe (linux_nat_event_pipe) == -1)
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internal_error (__FILE__, __LINE__,
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"creating event pipe failed.");
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fcntl (linux_nat_event_pipe[0], F_SETFL, O_NONBLOCK);
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fcntl (linux_nat_event_pipe[1], F_SETFL, O_NONBLOCK);
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}
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else
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{
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drain_queued_events (-1);
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linux_nat_num_queued_events = 0;
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close (linux_nat_event_pipe[0]);
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close (linux_nat_event_pipe[1]);
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linux_nat_event_pipe[0] = linux_nat_event_pipe[1] = -1;
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}
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}
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linux_nat_async_enabled = on;
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}
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static int
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send_sigint_callback (struct lwp_info *lp, void *data)
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{
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@ -4478,6 +4416,18 @@ linux_nat_get_siginfo (ptid_t ptid)
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return &lp->siginfo;
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}
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/* Enable/Disable async mode. */
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static void
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linux_nat_setup_async (void)
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{
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if (pipe (linux_nat_event_pipe) == -1)
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internal_error (__FILE__, __LINE__,
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"creating event pipe failed.");
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fcntl (linux_nat_event_pipe[0], F_SETFL, O_NONBLOCK);
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fcntl (linux_nat_event_pipe[1], F_SETFL, O_NONBLOCK);
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}
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void
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_initialize_linux_nat (void)
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{
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@ -4510,16 +4460,6 @@ Enables printf debugging output."),
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show_debug_linux_nat_async,
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&setdebuglist, &showdebuglist);
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add_setshow_boolean_cmd ("linux-async", class_maintenance,
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&linux_async_permitted_1, _("\
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Set whether gdb controls the GNU/Linux inferior in asynchronous mode."), _("\
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Show whether gdb controls the GNU/Linux inferior in asynchronous mode."), _("\
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Tells gdb whether to control the GNU/Linux inferior in asynchronous mode."),
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set_maintenance_linux_async_permitted,
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show_maintenance_linux_async_permitted,
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&maintenance_set_cmdlist,
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&maintenance_show_cmdlist);
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/* Get the default SIGCHLD action. Used while forking an inferior
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(see linux_nat_create_inferior/linux_nat_async_events). */
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sigaction (SIGCHLD, NULL, &sigchld_default_action);
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@ -4551,8 +4491,7 @@ Tells gdb whether to control the GNU/Linux inferior in asynchronous mode."),
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sigemptyset (&async_sigchld_action.sa_mask);
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async_sigchld_action.sa_flags = SA_RESTART;
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/* Install the default mode. */
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linux_nat_set_async_mode (linux_async_permitted);
|
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linux_nat_setup_async ();
|
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add_setshow_boolean_cmd ("disable-randomization", class_support,
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&disable_randomization, _("\
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|
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@ -89,6 +89,7 @@ struct mi_cmd mi_cmds[] =
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{ "inferior-tty-show", { NULL, 0 }, mi_cmd_inferior_tty_show},
|
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{ "interpreter-exec", { NULL, 0 }, mi_cmd_interpreter_exec},
|
||||
{ "list-features", { NULL, 0 }, mi_cmd_list_features},
|
||||
{ "list-target-features", { NULL, 0 }, mi_cmd_list_target_features},
|
||||
{ "overlay-auto", { NULL, 0 }, NULL },
|
||||
{ "overlay-list-mapping-state", { NULL, 0 }, NULL },
|
||||
{ "overlay-list-overlays", { NULL, 0 }, NULL },
|
||||
|
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@ -66,6 +66,7 @@ extern mi_cmd_argv_ftype mi_cmd_inferior_tty_set;
|
||||
extern mi_cmd_argv_ftype mi_cmd_inferior_tty_show;
|
||||
extern mi_cmd_argv_ftype mi_cmd_interpreter_exec;
|
||||
extern mi_cmd_argv_ftype mi_cmd_list_features;
|
||||
extern mi_cmd_argv_ftype mi_cmd_list_target_features;
|
||||
extern mi_cmd_argv_ftype mi_cmd_stack_info_depth;
|
||||
extern mi_cmd_argv_ftype mi_cmd_stack_info_frame;
|
||||
extern mi_cmd_argv_ftype mi_cmd_stack_list_args;
|
||||
|
||||
@ -915,7 +915,25 @@ mi_cmd_list_features (char *command, char **argv, int argc)
|
||||
|
||||
error ("-list-features should be passed no arguments");
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
mi_cmd_list_target_features (char *command, char **argv, int argc)
|
||||
{
|
||||
if (argc == 0)
|
||||
{
|
||||
struct cleanup *cleanup = NULL;
|
||||
cleanup = make_cleanup_ui_out_list_begin_end (uiout, "features");
|
||||
|
||||
if (target_can_async_p ())
|
||||
ui_out_field_string (uiout, NULL, "async");
|
||||
|
||||
do_cleanups (cleanup);
|
||||
return;
|
||||
}
|
||||
|
||||
error ("-list-target-features should be passed no arguments");
|
||||
}
|
||||
|
||||
/* Execute a command within a safe environment.
|
||||
Return <0 for error; >=0 for ok.
|
||||
|
||||
|
||||
54
gdb/remote.c
54
gdb/remote.c
@ -209,33 +209,6 @@ static void show_remote_protocol_packet_cmd (struct ui_file *file,
|
||||
|
||||
void _initialize_remote (void);
|
||||
|
||||
/* Controls if async mode is permitted. */
|
||||
static int remote_async_permitted = 0;
|
||||
|
||||
static int remote_async_permitted_set = 0;
|
||||
|
||||
static void
|
||||
set_maintenance_remote_async_permitted (char *args, int from_tty,
|
||||
struct cmd_list_element *c)
|
||||
{
|
||||
if (target_has_execution)
|
||||
{
|
||||
remote_async_permitted_set = remote_async_permitted; /* revert */
|
||||
error (_("Cannot change this setting while the inferior is running."));
|
||||
}
|
||||
|
||||
remote_async_permitted = remote_async_permitted_set;
|
||||
}
|
||||
|
||||
static void
|
||||
show_maintenance_remote_async_permitted (struct ui_file *file, int from_tty,
|
||||
struct cmd_list_element *c, const char *value)
|
||||
{
|
||||
fprintf_filtered (file, _("\
|
||||
Controlling the remote inferior in asynchronous mode is %s.\n"),
|
||||
value);
|
||||
}
|
||||
|
||||
/* For "remote". */
|
||||
|
||||
static struct cmd_list_element *remote_cmdlist;
|
||||
@ -2703,7 +2676,7 @@ remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended
|
||||
"(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
|
||||
|
||||
/* See FIXME above. */
|
||||
if (!remote_async_permitted)
|
||||
if (!target_async_permitted)
|
||||
wait_forever_enabled_p = 1;
|
||||
|
||||
/* If we're connected to a running target, target_preopen will kill it.
|
||||
@ -2824,7 +2797,7 @@ remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended
|
||||
this before anything involving memory or registers. */
|
||||
target_find_description ();
|
||||
|
||||
if (remote_async_permitted)
|
||||
if (target_async_permitted)
|
||||
{
|
||||
/* With this target we start out by owning the terminal. */
|
||||
remote_async_terminal_ours_p = 1;
|
||||
@ -2869,13 +2842,13 @@ remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended
|
||||
if (ex.reason < 0)
|
||||
{
|
||||
pop_target ();
|
||||
if (remote_async_permitted)
|
||||
if (target_async_permitted)
|
||||
wait_forever_enabled_p = 1;
|
||||
throw_exception (ex);
|
||||
}
|
||||
}
|
||||
|
||||
if (remote_async_permitted)
|
||||
if (target_async_permitted)
|
||||
wait_forever_enabled_p = 1;
|
||||
|
||||
if (extended_p)
|
||||
@ -3403,7 +3376,7 @@ Give up (and stop debugging it)? "))
|
||||
static void
|
||||
remote_terminal_inferior (void)
|
||||
{
|
||||
if (!remote_async_permitted)
|
||||
if (!target_async_permitted)
|
||||
/* Nothing to do. */
|
||||
return;
|
||||
|
||||
@ -3433,7 +3406,7 @@ remote_terminal_inferior (void)
|
||||
static void
|
||||
remote_terminal_ours (void)
|
||||
{
|
||||
if (!remote_async_permitted)
|
||||
if (!target_async_permitted)
|
||||
/* Nothing to do. */
|
||||
return;
|
||||
|
||||
@ -7265,7 +7238,7 @@ Specify the serial device it is connected to (e.g. /dev/ttya).";
|
||||
static int
|
||||
remote_can_async_p (void)
|
||||
{
|
||||
if (!remote_async_permitted)
|
||||
if (!target_async_permitted)
|
||||
/* We only enable async when the user specifically asks for it. */
|
||||
return 0;
|
||||
|
||||
@ -7276,7 +7249,7 @@ remote_can_async_p (void)
|
||||
static int
|
||||
remote_is_async_p (void)
|
||||
{
|
||||
if (!remote_async_permitted)
|
||||
if (!target_async_permitted)
|
||||
/* We only enable async when the user specifically asks for it. */
|
||||
return 0;
|
||||
|
||||
@ -7630,17 +7603,6 @@ Set the remote pathname for \"run\""), _("\
|
||||
Show the remote pathname for \"run\""), NULL, NULL, NULL,
|
||||
&remote_set_cmdlist, &remote_show_cmdlist);
|
||||
|
||||
add_setshow_boolean_cmd ("remote-async", class_maintenance,
|
||||
&remote_async_permitted_set, _("\
|
||||
Set whether gdb controls the remote inferior in asynchronous mode."), _("\
|
||||
Show whether gdb controls the remote inferior in asynchronous mode."), _("\
|
||||
Tells gdb whether to control the remote inferior in asynchronous mode."),
|
||||
set_maintenance_remote_async_permitted,
|
||||
show_maintenance_remote_async_permitted,
|
||||
&maintenance_set_cmdlist,
|
||||
&maintenance_show_cmdlist);
|
||||
|
||||
|
||||
/* Eventually initialize fileio. See fileio.c */
|
||||
initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
|
||||
|
||||
|
||||
39
gdb/target.c
39
gdb/target.c
@ -3133,6 +3133,35 @@ maintenance_print_target_stack (char *cmd, int from_tty)
|
||||
}
|
||||
}
|
||||
|
||||
/* Controls if async mode is permitted. */
|
||||
int target_async_permitted = 0;
|
||||
|
||||
/* The set command writes to this variable. If the inferior is
|
||||
executing, linux_nat_async_permitted is *not* updated. */
|
||||
static int target_async_permitted_1 = 0;
|
||||
|
||||
static void
|
||||
set_maintenance_target_async_permitted (char *args, int from_tty,
|
||||
struct cmd_list_element *c)
|
||||
{
|
||||
if (target_has_execution)
|
||||
{
|
||||
target_async_permitted_1 = target_async_permitted;
|
||||
error (_("Cannot change this setting while the inferior is running."));
|
||||
}
|
||||
|
||||
target_async_permitted = target_async_permitted_1;
|
||||
}
|
||||
|
||||
static void
|
||||
show_maintenance_target_async_permitted (struct ui_file *file, int from_tty,
|
||||
struct cmd_list_element *c,
|
||||
const char *value)
|
||||
{
|
||||
fprintf_filtered (file, _("\
|
||||
Controlling the inferior in asynchronous mode is %s.\n"), value);
|
||||
}
|
||||
|
||||
void
|
||||
initialize_targets (void)
|
||||
{
|
||||
@ -3170,5 +3199,15 @@ result in significant performance improvement for remote targets."),
|
||||
_("Print the name of each layer of the internal target stack."),
|
||||
&maintenanceprintlist);
|
||||
|
||||
add_setshow_boolean_cmd ("target-async", no_class,
|
||||
&target_async_permitted_1, _("\
|
||||
Set whether gdb controls the inferior in asynchronous mode."), _("\
|
||||
Show whether gdb controls the inferior in asynchronous mode."), _("\
|
||||
Tells gdb whether to control the inferior in asynchronous mode."),
|
||||
set_maintenance_target_async_permitted,
|
||||
show_maintenance_target_async_permitted,
|
||||
&setlist,
|
||||
&showlist);
|
||||
|
||||
target_dcache = dcache_init ();
|
||||
}
|
||||
|
||||
@ -956,6 +956,10 @@ int target_follow_fork (int follow_child);
|
||||
#define target_can_lock_scheduler \
|
||||
(current_target.to_has_thread_control & tc_schedlock)
|
||||
|
||||
/* Should the target enable async mode if it is supported? Temporary
|
||||
cludge until async mode is a strict superset of sync mode. */
|
||||
extern int target_async_permitted;
|
||||
|
||||
/* Can the target support asynchronous execution? */
|
||||
#define target_can_async_p() (current_target.to_can_async_p ())
|
||||
|
||||
|
||||
@ -1,3 +1,8 @@
|
||||
2008-08-19 Vladimir Prus <vladimir@codesourcery.com>
|
||||
|
||||
* gdb.mi/mi-async.exp: Use 'set target-async'.
|
||||
* lib/mi-support.exp: Use 'set/show target-async'.
|
||||
|
||||
2008-08-18 Daniel Jacobowitz <dan@codesourcery.com>
|
||||
|
||||
* gdb.arch/powerpc-prologue.exp: Correct saved registers.
|
||||
|
||||
@ -27,7 +27,7 @@ if { !([isnative] && [istarget *-linux*]) \
|
||||
|
||||
# The plan is for async mode to become the default but toggle for now.
|
||||
set saved_gdbflags $GDBFLAGS
|
||||
set GDBFLAGS [concat $GDBFLAGS " -ex \"maint set linux-async on\""]
|
||||
set GDBFLAGS [concat $GDBFLAGS " -ex \"set target-async on\""]
|
||||
|
||||
load_lib mi-support.exp
|
||||
|
||||
|
||||
@ -912,10 +912,10 @@ proc detect_async {} {
|
||||
global async
|
||||
global mi_gdb_prompt
|
||||
|
||||
send_gdb "maint show linux-async\n"
|
||||
send_gdb "show target-async\n"
|
||||
|
||||
gdb_expect {
|
||||
-re ".*Controlling the GNU/Linux inferior in asynchronous mode is on...*$mi_gdb_prompt$" {
|
||||
-re ".*Controlling the inferior in asynchronous mode is on...*$mi_gdb_prompt$" {
|
||||
set async 1
|
||||
}
|
||||
-re ".*$mi_gdb_prompt$" {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user