/* 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, 2008, 2009, 2010
+ 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
#include "observer.h"
#include "annotate.h"
#include "cli/cli-decode.h"
+#include "gdb_regex.h"
+#include "cli/cli-utils.h"
-/* Definition of struct thread_info exported to gdbthread.h */
+/* Definition of struct thread_info exported to gdbthread.h. */
-/* Prototypes for exported functions. */
+/* Prototypes for exported functions. */
void _initialize_thread (void);
-/* Prototypes for local functions. */
+/* Prototypes for local functions. */
static struct thread_info *thread_list = NULL;
static int highest_thread_num;
xfree (tp->private);
}
+ xfree (tp->name);
xfree (tp);
}
if (ptid_equal (tp->ptid, ptid))
return 1;
- return 0; /* Never heard of 'im */
+ return 0; /* Never heard of 'im. */
}
/* Finds the first thread of the inferior given by PID. If PID is -1,
}
/* Print a list of thread ids currently known, and the total number of
- threads. To be used from within catch_errors. */
+ threads. To be used from within catch_errors. */
static int
do_captured_list_thread_ids (struct ui_out *uiout, void *arg)
{
}
/* Official gdblib interface function to get a list of thread ids and
- the total number. */
+ the total number. */
enum gdb_rc
gdb_list_thread_ids (struct ui_out *uiout, char **error_message)
{
return GDB_RC_OK;
}
-/* Return true if TP is an active thread. */
+/* Return true if TP is an active thread. */
static int
thread_alive (struct thread_info *tp)
{
}
/* Prints the list of threads and their details on UIOUT.
- This is a version of 'info_thread_command' suitable for
- use from MI.
+ This is a version of 'info_threads_command' suitable for
+ use from MI.
If REQUESTED_THREAD is not -1, it's the GDB id of the thread
that should be printed. Otherwise, all threads are
- printed.
+ printed.
If PID is not -1, only print threads from the process PID.
- Otherwise, threads from all attached PIDs are printed.
+ Otherwise, threads from all attached PIDs are printed.
If both REQUESTED_THREAD and PID are not -1, then the thread
is printed if it belongs to the specified process. Otherwise,
an error is raised. */
void
-print_thread_info (struct ui_out *uiout, int requested_thread, int pid)
+print_thread_info (struct ui_out *uiout, char *requested_threads, int pid)
{
struct thread_info *tp;
ptid_t current_ptid;
struct cleanup *old_chain;
- char *extra_info;
+ char *extra_info, *name, *target_id;
int current_thread = -1;
update_thread_list ();
/* We'll be switching threads temporarily. */
old_chain = make_cleanup_restore_current_thread ();
- make_cleanup_ui_out_list_begin_end (uiout, "threads");
+ /* For backward compatibility, we make a list for MI. A table is
+ preferable for the CLI, though, because it shows table
+ headers. */
+ if (ui_out_is_mi_like_p (uiout))
+ make_cleanup_ui_out_list_begin_end (uiout, "threads");
+ else
+ {
+ int n_threads = 0;
+
+ for (tp = thread_list; tp; tp = tp->next)
+ {
+ if (!number_is_in_list (requested_threads, tp->num))
+ continue;
+
+ if (pid != -1 && PIDGET (tp->ptid) != pid)
+ continue;
+
+ if (tp->state_ == THREAD_EXITED)
+ continue;
+
+ ++n_threads;
+ }
+
+ if (n_threads == 0)
+ {
+ if (requested_threads == NULL || *requested_threads == '\0')
+ ui_out_message (uiout, 0, _("No threads.\n"));
+ else
+ ui_out_message (uiout, 0, _("No threads match '%s'.\n"),
+ requested_threads);
+ do_cleanups (old_chain);
+ return;
+ }
+
+ make_cleanup_ui_out_table_begin_end (uiout, 4, n_threads, "threads");
+
+ ui_out_table_header (uiout, 1, ui_left, "current", "");
+ ui_out_table_header (uiout, 4, ui_left, "id", "Id");
+ ui_out_table_header (uiout, 17, ui_left, "target-id", "Target Id");
+ ui_out_table_header (uiout, 1, ui_left, "frame", "Frame");
+ ui_out_table_body (uiout);
+ }
+
for (tp = thread_list; tp; tp = tp->next)
{
struct cleanup *chain2;
int core;
- if (requested_thread != -1 && tp->num != requested_thread)
+ if (!number_is_in_list (requested_threads, tp->num))
continue;
if (pid != -1 && PIDGET (tp->ptid) != pid)
{
- if (requested_thread != -1)
+ if (requested_threads != NULL && *requested_threads != '\0')
error (_("Requested thread not found in requested process"));
continue;
}
chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
- if (ptid_equal (tp->ptid, current_ptid))
- ui_out_text (uiout, "* ");
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ /* Compatibility. */
+ if (ptid_equal (tp->ptid, current_ptid))
+ ui_out_text (uiout, "* ");
+ else
+ ui_out_text (uiout, " ");
+ }
else
- ui_out_text (uiout, " ");
+ {
+ if (ptid_equal (tp->ptid, current_ptid))
+ ui_out_field_string (uiout, "current", "*");
+ else
+ ui_out_field_skip (uiout, "current");
+ }
ui_out_field_int (uiout, "id", tp->num);
- ui_out_text (uiout, " ");
- ui_out_field_string (uiout, "target-id", target_pid_to_str (tp->ptid));
+ /* For the CLI, we stuff everything into the target-id field.
+ This is a gross hack to make the output come out looking
+ correct. The underlying problem here is that ui-out has no
+ way to specify that a field's space allocation should be
+ shared by several fields. For MI, we do the right thing
+ instead. */
+
+ target_id = target_pid_to_str (tp->ptid);
extra_info = target_extra_thread_info (tp);
- if (extra_info)
+ name = tp->name ? tp->name : target_thread_name (tp);
+
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ ui_out_field_string (uiout, "target-id", target_id);
+ if (extra_info)
+ ui_out_field_string (uiout, "details", extra_info);
+ if (name)
+ ui_out_field_string (uiout, "name", name);
+ }
+ else
{
- ui_out_text (uiout, " (");
- ui_out_field_string (uiout, "details", extra_info);
- ui_out_text (uiout, ")");
+ struct cleanup *str_cleanup;
+ char *contents;
+
+ if (extra_info && name)
+ contents = xstrprintf ("%s \"%s\" (%s)", target_id,
+ name, extra_info);
+ else if (extra_info)
+ contents = xstrprintf ("%s (%s)", target_id, extra_info);
+ else if (name)
+ contents = xstrprintf ("%s \"%s\"", target_id, name);
+ else
+ contents = xstrdup (target_id);
+ str_cleanup = make_cleanup (xfree, contents);
+
+ ui_out_field_string (uiout, "target-id", contents);
+ do_cleanups (str_cleanup);
}
- ui_out_text (uiout, " ");
if (tp->state_ == THREAD_RUNNING)
ui_out_text (uiout, "(running)\n");
the "info threads" command. */
do_cleanups (old_chain);
- if (pid == -1 && requested_thread == -1)
+ if (pid == -1 && requested_threads == NULL)
{
gdb_assert (current_thread != -1
|| !thread_list
}
}
-
/* 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.
- */
+ Optional ARG is a thread id, or list of thread ids.
+
+ 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, -1);
+ print_thread_info (uiout, arg, -1);
}
-/* Switch from one thread to another. */
+/* Switch from one thread to another. */
void
switch_to_thread (ptid_t ptid)
struct frame_info *frame = NULL;
int count;
+ /* This means there was no selected frame. */
+ if (frame_level == -1)
+ {
+ select_frame (NULL);
+ return;
+ }
+
gdb_assert (frame_level >= 0);
/* Restore by level first, check if the frame id is the same as
/* Warn the user. */
if (frame_level > 0 && !ui_out_is_mi_like_p (uiout))
{
- warning (_("\
-Couldn't restore frame #%d in current thread, at reparsed frame #0\n"),
+ warning (_("Couldn't restore frame #%d in "
+ "current thread, at reparsed frame #0\n"),
frame_level);
/* For MI, we should probably have a notification about
current frame change. But this error is not very
&& target_has_registers
&& target_has_stack
&& target_has_memory)
- frame = get_selected_frame (NULL);
+ {
+ /* When processing internal events, there might not be a
+ selected frame. If we naively call get_selected_frame
+ here, then we can end up reading debuginfo for the
+ current frame, but we don't generally need the debuginfo
+ at this point. */
+ frame = get_selected_frame_if_set ();
+ }
else
frame = NULL;
thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
- thread apply all p x/i $pc Apply x/i $pc cmd to all threads
- */
+ thread apply all p x/i $pc Apply x/i $pc cmd to all threads. */
static void
thread_apply_all_command (char *cmd, int from_tty)
old_chain = make_cleanup_restore_current_thread ();
/* Save a copy of the command in case it is clobbered by
- execute_command */
+ execute_command. */
saved_cmd = xstrdup (cmd);
make_cleanup (xfree, saved_cmd);
for (tp = thread_list; tp; tp = tp->next)
printf_filtered (_("\nThread %d (%s):\n"),
tp->num, target_pid_to_str (inferior_ptid));
execute_command (cmd, from_tty);
- strcpy (cmd, saved_cmd); /* Restore exact command used previously */
+ strcpy (cmd, saved_cmd); /* Restore exact command used
+ previously. */
}
do_cleanups (old_chain);
thread_apply_command (char *tidlist, int from_tty)
{
char *cmd;
- char *p;
struct cleanup *old_chain;
char *saved_cmd;
+ struct get_number_or_range_state state;
if (tidlist == NULL || *tidlist == '\000')
error (_("Please specify a thread ID list"));
error (_("Please specify a command following the thread ID list"));
/* Save a copy of the command in case it is clobbered by
- execute_command */
+ execute_command. */
saved_cmd = xstrdup (cmd);
old_chain = make_cleanup (xfree, saved_cmd);
- while (tidlist < cmd)
+
+ init_number_or_range (&state, tidlist);
+ while (!state.finished && state.string < cmd)
{
struct thread_info *tp;
- int start, end;
-
- start = strtol (tidlist, &p, 10);
- if (p == tidlist)
- error (_("Error parsing %s"), tidlist);
- tidlist = p;
-
- while (*tidlist == ' ' || *tidlist == '\t')
- tidlist++;
+ int start;
+ char *p = tidlist;
- if (*tidlist == '-') /* Got a range of IDs? */
- {
- tidlist++; /* Skip the - */
- end = strtol (tidlist, &p, 10);
- if (p == tidlist)
- error (_("Error parsing %s"), tidlist);
- tidlist = p;
-
- while (*tidlist == ' ' || *tidlist == '\t')
- tidlist++;
- }
- else
- end = start;
+ start = get_number_or_range (&state);
make_cleanup_restore_current_thread ();
- for (; start <= end; start++)
- {
- tp = find_thread_id (start);
+ tp = find_thread_id (start);
- if (!tp)
- warning (_("Unknown thread %d."), start);
- else if (!thread_alive (tp))
- warning (_("Thread %d has terminated."), start);
- else
- {
- switch_to_thread (tp->ptid);
+ if (!tp)
+ warning (_("Unknown thread %d."), start);
+ else if (!thread_alive (tp))
+ warning (_("Thread %d has terminated."), start);
+ else
+ {
+ switch_to_thread (tp->ptid);
- printf_filtered (_("\nThread %d (%s):\n"), tp->num,
- target_pid_to_str (inferior_ptid));
- execute_command (cmd, from_tty);
+ printf_filtered (_("\nThread %d (%s):\n"), tp->num,
+ target_pid_to_str (inferior_ptid));
+ execute_command (cmd, from_tty);
- /* Restore exact command used previously. */
- strcpy (cmd, saved_cmd);
- }
+ /* Restore exact command used previously. */
+ strcpy (cmd, saved_cmd);
}
}
gdb_thread_select (uiout, tidstr, NULL);
}
+/* Implementation of `thread name'. */
+
+static void
+thread_name_command (char *arg, int from_tty)
+{
+ struct thread_info *info;
+
+ if (ptid_equal (inferior_ptid, null_ptid))
+ error (_("No thread selected"));
+
+ while (arg && isspace (*arg))
+ ++arg;
+
+ info = inferior_thread ();
+ xfree (info->name);
+ info->name = arg ? xstrdup (arg) : NULL;
+}
+
+/* Find thread ids with a name, target pid, or extra info matching ARG. */
+
+static void
+thread_find_command (char *arg, int from_tty)
+{
+ struct thread_info *tp;
+ char *tmp;
+ unsigned long match = 0;
+
+ if (arg == NULL || *arg == '\0')
+ error (_("Command requires an argument."));
+
+ tmp = re_comp (arg);
+ if (tmp != 0)
+ error (_("Invalid regexp (%s): %s"), tmp, arg);
+
+ update_thread_list ();
+ for (tp = thread_list; tp; tp = tp->next)
+ {
+ if (tp->name != NULL && re_exec (tp->name))
+ {
+ printf_filtered (_("Thread %d has name '%s'\n"),
+ tp->num, tp->name);
+ match++;
+ }
+
+ tmp = target_thread_name (tp);
+ if (tmp != NULL && re_exec (tmp))
+ {
+ printf_filtered (_("Thread %d has target name '%s'\n"),
+ tp->num, tmp);
+ match++;
+ }
+
+ tmp = target_pid_to_str (tp->ptid);
+ if (tmp != NULL && re_exec (tmp))
+ {
+ printf_filtered (_("Thread %d has target id '%s'\n"),
+ tp->num, tmp);
+ match++;
+ }
+
+ tmp = target_extra_thread_info (tp);
+ if (tmp != NULL && re_exec (tmp))
+ {
+ printf_filtered (_("Thread %d has extra info '%s'\n"),
+ tp->num, tmp);
+ match++;
+ }
+ }
+ if (!match)
+ printf_filtered (_("No threads match '%s'\n"), arg);
+}
+
/* 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"),
+ fprintf_filtered (file,
+ _("Printing of thread events is %s.\n"),
value);
}
if (tp->state_ == THREAD_RUNNING)
ui_out_text (uiout, "(running)\n");
else
- print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
+ {
+ ui_out_text (uiout, "\n");
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
+ }
/* Since the current thread may have changed, see if there is any
exited thread we can now delete. */
{
static struct cmd_list_element *thread_apply_list = NULL;
- add_info ("threads", info_threads_command,
- _("IDs of currently known threads."));
+ add_info ("threads", info_threads_command,
+ _("Display currently known threads.\n\
+Usage: info threads [ID]...\n\
+Optional arguments are thread IDs with spaces between.\n\
+If no arguments, all threads are displayed."));
add_prefix_cmd ("thread", class_run, thread_command, _("\
Use this command to switch between threads.\n\
add_cmd ("all", class_run, thread_apply_all_command,
_("Apply a command to all threads."), &thread_apply_list);
+ add_cmd ("name", class_run, thread_name_command,
+ _("Set the current thread's name.\n\
+Usage: thread name [NAME]\n\
+If NAME is not given, then any existing name is removed."), &thread_cmd_list);
+
+ add_cmd ("find", class_run, thread_find_command, _("\
+Find threads that match a regular expression.\n\
+Usage: thread find REGEXP\n\
+Will display thread ids whose name, target ID, or extra info matches REGEXP."),
+ &thread_cmd_list);
+
if (!xdb_commands)
add_com_alias ("t", "thread", class_run, 1);
projects / binutils-gdb.git / blobdiff