/* Multi-process/thread control for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
#include <sys/types.h>
#include <signal.h>
#include "ui-out.h"
+#include "observer.h"
+#include "annotate.h"
/* Definition of struct thread_info exported to gdbthread.h */
static void info_threads_command (char *, int);
static void thread_apply_command (char *, int);
static void restore_current_thread (ptid_t);
-static void switch_to_thread (ptid_t ptid);
static void prune_threads (void);
-static struct cleanup *make_cleanup_restore_current_thread (ptid_t,
- struct frame_id);
void
delete_step_resume_breakpoint (void *arg)
free_thread (struct thread_info *tp)
{
/* NOTE: this will take care of any left-over step_resume breakpoints,
- but not any user-specified thread-specific breakpoints. */
+ but not any user-specified thread-specific breakpoints. We can not
+ delete the breakpoint straight-off, because the inferior might not
+ be stopped at the moment. */
if (tp->step_resume_breakpoint)
- delete_breakpoint (tp->step_resume_breakpoint);
+ tp->step_resume_breakpoint->disposition = disp_del_at_next_stop;
/* FIXME: do I ever need to call the back-end to give it a
chance at this private data before deleting the thread? */
thread_list = NULL;
}
-/* add_thread now returns a pointer to the new thread_info,
- so that back_ends can initialize their private data. */
-
struct thread_info *
-add_thread (ptid_t ptid)
+add_thread_silent (ptid_t ptid)
{
struct thread_info *tp;
tp->num = ++highest_thread_num;
tp->next = thread_list;
thread_list = tp;
+
+ observer_notify_new_thread (tp);
+
return tp;
}
+struct thread_info *
+add_thread_with_info (ptid_t ptid, struct private_thread_info *private)
+{
+ struct thread_info *result = add_thread_silent (ptid);
+
+ result->private = private;
+
+ if (print_thread_events)
+ printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid));
+
+ annotate_new_thread ();
+ return result;
+}
+
+struct thread_info *
+add_thread (ptid_t ptid)
+{
+ return add_thread_with_info (ptid, NULL);
+}
+
void
delete_thread (ptid_t ptid)
{
else
thread_list = tp->next;
+ observer_notify_thread_exit (tp);
+
free_thread (tp);
}
CORE_ADDR *step_range_start,
CORE_ADDR *step_range_end,
struct frame_id *step_frame_id,
- int *handling_longjmp,
- int *another_trap,
+ int *stepping_over_breakpoint,
int *stepping_through_solib_after_catch,
bpstat *stepping_through_solib_catchpoints,
int *current_line,
*step_range_start = tp->step_range_start;
*step_range_end = tp->step_range_end;
*step_frame_id = tp->step_frame_id;
- *handling_longjmp = tp->handling_longjmp;
- *another_trap = tp->another_trap;
+ *stepping_over_breakpoint = tp->stepping_over_breakpoint;
*stepping_through_solib_after_catch =
tp->stepping_through_solib_after_catch;
*stepping_through_solib_catchpoints =
CORE_ADDR step_range_start,
CORE_ADDR step_range_end,
const struct frame_id *step_frame_id,
- int handling_longjmp,
- int another_trap,
+ int stepping_over_breakpoint,
int stepping_through_solib_after_catch,
bpstat stepping_through_solib_catchpoints,
int current_line,
tp->step_range_start = step_range_start;
tp->step_range_end = step_range_end;
tp->step_frame_id = (*step_frame_id);
- tp->handling_longjmp = handling_longjmp;
- tp->another_trap = another_trap;
+ tp->stepping_over_breakpoint = stepping_over_breakpoint;
tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch;
tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints;
tp->current_line = current_line;
}
}
-/* Print information about currently known threads
-
- * Note: this has the drawback that it _really_ switches
- * threads, which frees the frame cache. A no-side
- * effects info-threads command would be nicer.
- */
-
-static void
-info_threads_command (char *arg, int from_tty)
+/* Prints the list of threads and their details on UIOUT.
+ This is a version of 'info_thread_command' suitable for
+ use from MI.
+ If REQESTED_THREAD is not -1, it's the GDB id of the thread
+ that should be printed. Otherwise, all threads are
+ printed. */
+void
+print_thread_info (struct ui_out *uiout, int requested_thread)
{
struct thread_info *tp;
ptid_t current_ptid;
struct cleanup *old_chain;
struct frame_id saved_frame_id;
char *extra_info;
+ int current_thread = -1;
/* Backup current thread and selected frame. */
saved_frame_id = get_frame_id (get_selected_frame (NULL));
old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id);
+ make_cleanup_ui_out_list_begin_end (uiout, "threads");
+
prune_threads ();
target_find_new_threads ();
current_ptid = inferior_ptid;
for (tp = thread_list; tp; tp = tp->next)
{
+ struct cleanup *chain2;
+
+ if (requested_thread != -1 && tp->num != requested_thread)
+ continue;
+
+ chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+
if (ptid_equal (tp->ptid, current_ptid))
- printf_filtered ("* ");
+ {
+ current_thread = tp->num;
+ ui_out_text (uiout, "* ");
+ }
else
- printf_filtered (" ");
+ ui_out_text (uiout, " ");
- printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->ptid));
+ ui_out_field_int (uiout, "id", tp->num);
+ ui_out_text (uiout, " ");
+ ui_out_field_string (uiout, "target-id", target_tid_to_str (tp->ptid));
extra_info = target_extra_thread_info (tp);
if (extra_info)
- printf_filtered (" (%s)", extra_info);
- puts_filtered (" ");
+ {
+ ui_out_text (uiout, " (");
+ ui_out_field_string (uiout, "details", extra_info);
+ ui_out_text (uiout, ")");
+ }
+ ui_out_text (uiout, " ");
/* That switch put us at the top of the stack (leaf frame). */
switch_to_thread (tp->ptid);
- print_stack_frame (get_selected_frame (NULL), 0, LOCATION);
+ print_stack_frame (get_selected_frame (NULL),
+ /* For MI output, print frame level. */
+ ui_out_is_mi_like_p (uiout),
+ LOCATION);
+
+ do_cleanups (chain2);
}
/* Restores the current thread and the frame selected before
the "info threads" command. */
do_cleanups (old_chain);
+ if (requested_thread == -1)
+ {
+ gdb_assert (current_thread != -1 || !thread_list);
+ if (current_thread != -1 && ui_out_is_mi_like_p (uiout))
+ ui_out_field_int (uiout, "current-thread-id", current_thread);
+ }
+
/* If case we were not able to find the original frame, print the
new selected frame. */
if (frame_find_by_id (saved_frame_id) == NULL)
{
warning (_("Couldn't restore frame in current thread, at frame 0"));
- print_stack_frame (get_selected_frame (NULL), 0, LOCATION);
+ /* For MI, we should probably have a notification about
+ current frame change. But this error is not very likely, so
+ don't bother for now. */
+ if (!ui_out_is_mi_like_p (uiout))
+ print_stack_frame (get_selected_frame (NULL), 0, LOCATION);
}
}
-/* Switch from one thread to another. */
+
+/* Print information about currently known threads
+
+ * Note: this has the drawback that it _really_ switches
+ * threads, which frees the frame cache. A no-side
+ * effects info-threads command would be nicer.
+ */
static void
+info_threads_command (char *arg, int from_tty)
+{
+ print_thread_info (uiout, -1);
+}
+
+/* Switch from one thread to another. */
+
+void
switch_to_thread (ptid_t ptid)
{
if (ptid_equal (ptid, inferior_ptid))
xfree (old);
}
-static struct cleanup *
+struct cleanup *
make_cleanup_restore_current_thread (ptid_t inferior_ptid,
struct frame_id a_frame_id)
{
return;
}
+ annotate_thread_changed ();
gdb_thread_select (uiout, tidstr, NULL);
}
+/* Print notices when new threads are attached and detached. */
+int print_thread_events = 1;
+static void
+show_print_thread_events (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Printing of thread events is %s.\n"),
+ value);
+}
+
static int
do_captured_thread_select (struct ui_out *uiout, void *tidstr)
{
if (!xdb_commands)
add_com_alias ("t", "thread", class_run, 1);
+
+ add_setshow_boolean_cmd ("thread-events", no_class,
+ &print_thread_events, _("\
+Set printing of thread events (such as thread start and exit)."), _("\
+Show printing of thread events (such as thread start and exit)."), NULL,
+ NULL,
+ show_print_thread_events,
+ &setprintlist, &showprintlist);
}
projects / binutils.git / blobdiff