/* Multi-process/thread control for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1993, 1998
+
+ Copyright (C) 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
- Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 2 of the License, or
-(at your option) any later version.
+ 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.
+ 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, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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 "symtab.h"
#include "value.h"
#include "target.h"
#include "gdbthread.h"
+#include "exceptions.h"
#include "command.h"
#include "gdbcmd.h"
+#include "regcache.h"
+#include "gdb.h"
+#include "gdb_string.h"
#include <ctype.h>
#include <sys/types.h>
#include <signal.h>
+#include "ui-out.h"
+#include "observer.h"
+#include "annotate.h"
-/*#include "lynxos-core.h"*/
-
-struct thread_info
-{
- struct thread_info *next;
- int pid; /* Actual process id */
- int num; /* Convenient handle */
- CORE_ADDR prev_pc; /* State from wait_for_inferior */
- CORE_ADDR prev_func_start;
- char *prev_func_name;
- struct breakpoint *step_resume_breakpoint;
- struct breakpoint *through_sigtramp_breakpoint;
- CORE_ADDR step_range_start;
- CORE_ADDR step_range_end;
- CORE_ADDR step_frame_address;
- int trap_expected;
- int handling_longjmp;
- int another_trap;
-
- /* This is set TRUE when a catchpoint of a shared library event
- triggers. Since we don't wish to leave the inferior in the
- solib hook when we report the event, we step the inferior
- back to user code before stopping and reporting the event.
- */
- int stepping_through_solib_after_catch;
-
- /* When stepping_through_solib_after_catch is TRUE, this is a
- list of the catchpoints that should be reported as triggering
- when we finally do stop stepping.
- */
- bpstat stepping_through_solib_catchpoints;
-
- /* This is set to TRUE when this thread is in a signal handler
- trampoline and we're single-stepping through it */
- int stepping_through_sigtramp;
-
-};
+/* Definition of struct thread_info exported to gdbthread.h */
/* Prototypes for exported functions. */
-void _initialize_thread PARAMS ((void));
+void _initialize_thread (void);
/* Prototypes for local functions. */
-#if !defined(FIND_NEW_THREADS)
-#define FIND_NEW_THREADS target_find_new_threads
-#endif
-
static struct thread_info *thread_list = NULL;
static int highest_thread_num;
-static struct thread_info * find_thread_id PARAMS ((int num));
-
-static void thread_command PARAMS ((char * tidstr, int from_tty));
-static void thread_apply_all_command PARAMS ((char *, int));
-static int thread_alive PARAMS ((struct thread_info *));
-static void info_threads_command PARAMS ((char *, int));
-static void thread_apply_command PARAMS ((char *, int));
-static void restore_current_thread PARAMS ((int));
-static void switch_to_thread PARAMS ((int pid));
-static void prune_threads PARAMS ((void));
-
-/* If the host has threads, the host machine definition may set this
- macro. But, for remote thread debugging, it gets more complex and
- setting macros does not bind to the various target dependent
- methods well. So, we use the vector target_thread_functions */
-
-static struct target_thread_vector *target_thread_functions;
+static struct thread_info *find_thread_id (int num);
-static int target_find_new_threads PARAMS ((void));
+static void thread_command (char *tidstr, int from_tty);
+static void thread_apply_all_command (char *, int);
+static int thread_alive (struct thread_info *);
+static void info_threads_command (char *, int);
+static void thread_apply_command (char *, int);
+static void restore_current_thread (ptid_t);
+static void prune_threads (void);
-static int
-target_find_new_threads ()
+void
+delete_step_resume_breakpoint (void *arg)
{
- int retval = 0;
- if (target_thread_functions &&
- target_thread_functions->find_new_threads)
- retval = (*(target_thread_functions->find_new_threads)) ();
- return retval; /* no support */
-}
-
-
-int
-target_get_thread_info PARAMS ((gdb_threadref * ref,
- int selection, /* FIXME: Selection */
- struct gdb_ext_thread_info * info));
-
-int
-target_get_thread_info (ref, selection, info)
+ struct breakpoint **breakpointp = (struct breakpoint **) arg;
+ struct thread_info *tp;
- gdb_threadref *ref;
- int selection;
- /* FIXME: Selection */
- struct gdb_ext_thread_info *info;
+ if (*breakpointp != NULL)
+ {
+ delete_breakpoint (*breakpointp);
+ for (tp = thread_list; tp; tp = tp->next)
+ if (tp->step_resume_breakpoint == *breakpointp)
+ tp->step_resume_breakpoint = NULL;
-{
- int retval = 0;
- if (target_thread_functions
- && target_thread_functions->get_thread_info)
- retval = (*(target_thread_functions->get_thread_info)) (ref, selection, info);
- return retval;
+ *breakpointp = NULL;
+ }
}
-
-/* It is possible that these bind and unbinf functions implement a
- stack the interface allows it, but its not implemented that way
- */
-
-
-void
-bind_target_thread_vector (vec)
- struct target_thread_vector *vec;
+static void
+free_thread (struct thread_info *tp)
{
- target_thread_functions = vec;
+ /* NOTE: this will take care of any left-over step_resume 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)
+ 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? */
+ if (tp->private)
+ xfree (tp->private);
+
+ xfree (tp);
}
-struct target_thread_vector *
-unbind_target_thread_vector ()
-{
- struct target_thread_vector *retval;
- retval = target_thread_functions;
- target_thread_functions = 0;
- return retval;
-} /* unbind_target_thread-vector */
-
void
-init_thread_list ()
+init_thread_list (void)
{
struct thread_info *tp, *tpnext;
+ highest_thread_num = 0;
if (!thread_list)
return;
for (tp = thread_list; tp; tp = tpnext)
{
tpnext = tp->next;
- free (tp);
+ free_thread (tp);
}
thread_list = NULL;
- highest_thread_num = 0;
}
-void
-add_thread (pid)
- int pid;
+struct thread_info *
+add_thread_silent (ptid_t ptid)
{
struct thread_info *tp;
- tp = (struct thread_info *) xmalloc (sizeof (struct thread_info));
-
- tp->pid = pid;
+ tp = (struct thread_info *) xmalloc (sizeof (*tp));
+ memset (tp, 0, sizeof (*tp));
+ tp->ptid = ptid;
tp->num = ++highest_thread_num;
- tp->prev_pc = 0;
- tp->prev_func_start = 0;
- tp->prev_func_name = NULL;
- tp->step_range_start = 0;
- tp->step_range_end = 0;
- tp->step_frame_address =0;
- tp->step_resume_breakpoint = 0;
- tp->through_sigtramp_breakpoint = 0;
- tp->handling_longjmp = 0;
- tp->trap_expected = 0;
- tp->another_trap = 0;
- tp->stepping_through_solib_after_catch = 0;
- tp->stepping_through_solib_catchpoints = NULL;
- tp->stepping_through_sigtramp = 0;
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 (pid)
- int pid;
+delete_thread (ptid_t ptid)
{
struct thread_info *tp, *tpprev;
tpprev = NULL;
for (tp = thread_list; tp; tpprev = tp, tp = tp->next)
- if (tp->pid == pid)
+ if (ptid_equal (tp->ptid, ptid))
break;
if (!tp)
else
thread_list = tp->next;
- free (tp);
+ observer_notify_thread_exit (tp);
- return;
+ free_thread (tp);
}
static struct thread_info *
-find_thread_id (num)
- int num;
+find_thread_id (int num)
{
struct thread_info *tp;
return NULL;
}
+/* Find a thread_info by matching PTID. */
+struct thread_info *
+find_thread_pid (ptid_t ptid)
+{
+ struct thread_info *tp;
+
+ for (tp = thread_list; tp; tp = tp->next)
+ if (ptid_equal (tp->ptid, ptid))
+ return tp;
+
+ return NULL;
+}
+
+/*
+ * Thread iterator function.
+ *
+ * Calls a callback function once for each thread, so long as
+ * the callback function returns false. If the callback function
+ * returns true, the iteration will end and the current thread
+ * will be returned. This can be useful for implementing a
+ * search for a thread with arbitrary attributes, or for applying
+ * some operation to every thread.
+ *
+ * FIXME: some of the existing functionality, such as
+ * "Thread apply all", might be rewritten using this functionality.
+ */
+
+struct thread_info *
+iterate_over_threads (int (*callback) (struct thread_info *, void *),
+ void *data)
+{
+ struct thread_info *tp;
+
+ for (tp = thread_list; tp; tp = tp->next)
+ if ((*callback) (tp, data))
+ return tp;
+
+ return NULL;
+}
+
int
-valid_thread_id (num)
- int num;
+valid_thread_id (int num)
{
struct thread_info *tp;
}
int
-pid_to_thread_id (pid)
- int pid;
+pid_to_thread_id (ptid_t ptid)
{
struct thread_info *tp;
for (tp = thread_list; tp; tp = tp->next)
- if (tp->pid == pid)
+ if (ptid_equal (tp->ptid, ptid))
return tp->num;
return 0;
}
-int
-thread_id_to_pid (num)
- int num;
+ptid_t
+thread_id_to_pid (int num)
{
struct thread_info *thread = find_thread_id (num);
if (thread)
- return thread->pid;
+ return thread->ptid;
else
- return -1;
+ return pid_to_ptid (-1);
}
int
-in_thread_list (pid)
- int pid;
+in_thread_list (ptid_t ptid)
{
struct thread_info *tp;
for (tp = thread_list; tp; tp = tp->next)
- if (tp->pid == pid)
+ if (ptid_equal (tp->ptid, ptid))
return 1;
return 0; /* Never heard of 'im */
}
+/* Print a list of thread ids currently known, and the total number of
+ threads. To be used from within catch_errors. */
+static int
+do_captured_list_thread_ids (struct ui_out *uiout, void *arg)
+{
+ struct thread_info *tp;
+ int num = 0;
+ struct cleanup *cleanup_chain;
+
+ prune_threads ();
+ target_find_new_threads ();
+
+ cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids");
+
+ for (tp = thread_list; tp; tp = tp->next)
+ {
+ num++;
+ ui_out_field_int (uiout, "thread-id", tp->num);
+ }
+
+ do_cleanups (cleanup_chain);
+ ui_out_field_int (uiout, "number-of-threads", num);
+ return GDB_RC_OK;
+}
+
+/* Official gdblib interface function to get a list of thread ids and
+ the total number. */
+enum gdb_rc
+gdb_list_thread_ids (struct ui_out *uiout, char **error_message)
+{
+ if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL,
+ error_message, RETURN_MASK_ALL) < 0)
+ return GDB_RC_FAIL;
+ return GDB_RC_OK;
+}
+
/* Load infrun state for the thread PID. */
-void load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
- trap_expected, step_resume_breakpoint,
- through_sigtramp_breakpoint, step_range_start,
- step_range_end, step_frame_address,
- handling_longjmp, another_trap,
- stepping_through_solib_after_catch,
- stepping_through_solib_catchpoints,
- stepping_through_sigtramp)
- int pid;
- CORE_ADDR *prev_pc;
- CORE_ADDR *prev_func_start;
- char **prev_func_name;
- int *trap_expected;
- struct breakpoint **step_resume_breakpoint;
- struct breakpoint **through_sigtramp_breakpoint;
- CORE_ADDR *step_range_start;
- CORE_ADDR *step_range_end;
- CORE_ADDR *step_frame_address;
- int *handling_longjmp;
- int *another_trap;
- int * stepping_through_solib_after_catch;
- bpstat * stepping_through_solib_catchpoints;
- int * stepping_through_sigtramp;
+void
+load_infrun_state (ptid_t ptid,
+ CORE_ADDR *prev_pc,
+ int *trap_expected,
+ struct breakpoint **step_resume_breakpoint,
+ CORE_ADDR *step_range_start,
+ CORE_ADDR *step_range_end,
+ struct frame_id *step_frame_id,
+ int *stepping_over_breakpoint,
+ int *stepping_through_solib_after_catch,
+ bpstat *stepping_through_solib_catchpoints,
+ int *current_line,
+ struct symtab **current_symtab)
{
struct thread_info *tp;
/* If we can't find the thread, then we're debugging a single threaded
process. No need to do anything in that case. */
- tp = find_thread_id (pid_to_thread_id (pid));
+ tp = find_thread_id (pid_to_thread_id (ptid));
if (tp == NULL)
return;
*prev_pc = tp->prev_pc;
- *prev_func_start = tp->prev_func_start;
- *prev_func_name = tp->prev_func_name;
+ *trap_expected = tp->trap_expected;
*step_resume_breakpoint = tp->step_resume_breakpoint;
*step_range_start = tp->step_range_start;
*step_range_end = tp->step_range_end;
- *step_frame_address = tp->step_frame_address;
- *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
- *handling_longjmp = tp->handling_longjmp;
- *trap_expected = tp->trap_expected;
- *another_trap = tp->another_trap;
- *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch;
- *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints;
- *stepping_through_sigtramp = tp->stepping_through_sigtramp;
+ *step_frame_id = tp->step_frame_id;
+ *stepping_over_breakpoint = tp->stepping_over_breakpoint;
+ *stepping_through_solib_after_catch =
+ tp->stepping_through_solib_after_catch;
+ *stepping_through_solib_catchpoints =
+ tp->stepping_through_solib_catchpoints;
+ *current_line = tp->current_line;
+ *current_symtab = tp->current_symtab;
}
/* Save infrun state for the thread PID. */
-void save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
- trap_expected, step_resume_breakpoint,
- through_sigtramp_breakpoint, step_range_start,
- step_range_end, step_frame_address,
- handling_longjmp, another_trap,
- stepping_through_solib_after_catch,
- stepping_through_solib_catchpoints,
- stepping_through_sigtramp)
- int pid;
- CORE_ADDR prev_pc;
- CORE_ADDR prev_func_start;
- char *prev_func_name;
- int trap_expected;
- struct breakpoint *step_resume_breakpoint;
- struct breakpoint *through_sigtramp_breakpoint;
- CORE_ADDR step_range_start;
- CORE_ADDR step_range_end;
- CORE_ADDR step_frame_address;
- int handling_longjmp;
- int another_trap;
- int stepping_through_solib_after_catch;
- bpstat stepping_through_solib_catchpoints;
- int stepping_through_sigtramp;
+void
+save_infrun_state (ptid_t ptid,
+ CORE_ADDR prev_pc,
+ int trap_expected,
+ struct breakpoint *step_resume_breakpoint,
+ CORE_ADDR step_range_start,
+ CORE_ADDR step_range_end,
+ const struct frame_id *step_frame_id,
+ int stepping_over_breakpoint,
+ int stepping_through_solib_after_catch,
+ bpstat stepping_through_solib_catchpoints,
+ int current_line,
+ struct symtab *current_symtab)
{
struct thread_info *tp;
/* If we can't find the thread, then we're debugging a single-threaded
process. Nothing to do in that case. */
- tp = find_thread_id (pid_to_thread_id (pid));
+ tp = find_thread_id (pid_to_thread_id (ptid));
if (tp == NULL)
return;
tp->prev_pc = prev_pc;
- tp->prev_func_start = prev_func_start;
- tp->prev_func_name = prev_func_name;
+ tp->trap_expected = trap_expected;
tp->step_resume_breakpoint = step_resume_breakpoint;
tp->step_range_start = step_range_start;
tp->step_range_end = step_range_end;
- tp->step_frame_address = step_frame_address;
- tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
- tp->handling_longjmp = handling_longjmp;
- tp->trap_expected = trap_expected;
- tp->another_trap = another_trap;
+ tp->step_frame_id = (*step_frame_id);
+ 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->stepping_through_sigtramp = stepping_through_sigtramp;
+ tp->current_line = current_line;
+ tp->current_symtab = current_symtab;
}
/* Return true if TP is an active thread. */
static int
-thread_alive (tp)
- struct thread_info *tp;
+thread_alive (struct thread_info *tp)
{
- if (tp->pid == -1)
+ if (PIDGET (tp->ptid) == -1)
return 0;
- if (! target_thread_alive (tp->pid))
+ if (!target_thread_alive (tp->ptid))
{
- tp->pid = -1; /* Mark it as dead */
+ tp->ptid = pid_to_ptid (-1); /* Mark it as dead */
return 0;
}
return 1;
}
static void
-prune_threads ()
+prune_threads (void)
{
- struct thread_info *tp, *tpprev, *next;
+ struct thread_info *tp, *next;
- tpprev = 0;
for (tp = thread_list; tp; tp = next)
{
next = tp->next;
if (!thread_alive (tp))
- {
- if (tpprev)
- tpprev->next = next;
- else
- thread_list = next;
- free (tp);
- }
- else
- tpprev = tp;
+ delete_thread (tp->ptid);
}
}
-/* 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 (arg, from_tty)
- 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;
- int current_pid;
- struct frame_info *cur_frame;
- int saved_frame_level = selected_frame_level;
- int counter;
+ ptid_t current_ptid;
+ struct frame_info *cur_frame;
+ struct cleanup *old_chain;
+ struct frame_id saved_frame_id;
+ char *extra_info;
+ int current_thread = -1;
- /* Avoid coredumps which would happen if we tried to access a NULL
- selected_frame. */
- if (!target_has_stack) error ("No stack.");
+ /* 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 ();
-#if defined(FIND_NEW_THREADS)
- FIND_NEW_THREADS ();
-#endif
- current_pid = inferior_pid;
+ target_find_new_threads ();
+ current_ptid = inferior_ptid;
for (tp = thread_list; tp; tp = tp->next)
{
- if (tp->pid == current_pid)
- printf_filtered ("* ");
- else
- printf_filtered (" ");
-
-#ifdef HPUXHPPA
- printf_filtered ("%d %s ", tp->num, target_tid_to_str (tp->pid));
-#else
- printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid));
-#endif
- switch_to_thread (tp->pid);
- if (selected_frame)
- print_only_stack_frame (selected_frame, -1, 0);
+ 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))
+ {
+ current_thread = tp->num;
+ ui_out_text (uiout, "* ");
+ }
else
- printf_filtered ("[No stack.]\n");
+ ui_out_text (uiout, " ");
+
+ 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)
+ {
+ 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),
+ /* For MI output, print frame level. */
+ ui_out_is_mi_like_p (uiout),
+ LOCATION);
+
+ do_cleanups (chain2);
}
- switch_to_thread (current_pid);
-
- /* Code below copied from "up_silently_base" in "stack.c".
- * It restores the frame set by the user before the "info threads"
- * command. We have finished the info-threads display by switching
- * back to the current thread. That switch has put us at the top
- * of the stack (leaf frame).
- */
- counter = saved_frame_level;
- cur_frame = find_relative_frame(selected_frame, &counter);
- if (counter != 0)
+ /* Restores the current thread and the frame selected before
+ the "info threads" command. */
+ do_cleanups (old_chain);
+
+ if (requested_thread == -1)
{
- /* Ooops, can't restore, tell user where we are. */
- warning ("Couldn't restore frame in current thread, at frame 0");
- print_stack_frame (selected_frame, -1, 0);
+ 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);
}
- else
+
+ /* 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)
{
- select_frame(cur_frame, saved_frame_level);
+ warning (_("Couldn't restore frame in current thread, at frame 0"));
+ /* 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);
}
+}
+
- /* re-show current frame. */
- show_stack_frame(cur_frame);
+/* 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. */
-static void
-switch_to_thread (pid)
- int pid;
+void
+switch_to_thread (ptid_t ptid)
{
- if (pid == inferior_pid)
+ if (ptid_equal (ptid, inferior_ptid))
return;
- inferior_pid = pid;
- flush_cached_frames ();
+ inferior_ptid = ptid;
+ reinit_frame_cache ();
registers_changed ();
- stop_pc = read_pc();
- select_frame (get_current_frame (), 0);
+ stop_pc = read_pc ();
+}
+
+static void
+restore_current_thread (ptid_t ptid)
+{
+ if (!ptid_equal (ptid, inferior_ptid))
+ {
+ switch_to_thread (ptid);
+ }
}
static void
-restore_current_thread (pid)
- int pid;
+restore_selected_frame (struct frame_id a_frame_id)
{
- if (pid != inferior_pid)
+ struct frame_info *selected_frame_info = NULL;
+
+ if (frame_id_eq (a_frame_id, null_frame_id))
+ return;
+
+ if ((selected_frame_info = frame_find_by_id (a_frame_id)) != NULL)
{
- switch_to_thread (pid);
- print_stack_frame( get_current_frame(), 0, -1);
+ select_frame (selected_frame_info);
}
}
+struct current_thread_cleanup
+{
+ ptid_t inferior_ptid;
+ struct frame_id selected_frame_id;
+};
+
+static void
+do_restore_current_thread_cleanup (void *arg)
+{
+ struct current_thread_cleanup *old = arg;
+ restore_current_thread (old->inferior_ptid);
+ restore_selected_frame (old->selected_frame_id);
+ xfree (old);
+}
+
+struct cleanup *
+make_cleanup_restore_current_thread (ptid_t inferior_ptid,
+ struct frame_id a_frame_id)
+{
+ struct current_thread_cleanup *old
+ = xmalloc (sizeof (struct current_thread_cleanup));
+ old->inferior_ptid = inferior_ptid;
+ old->selected_frame_id = a_frame_id;
+ return make_cleanup (do_restore_current_thread_cleanup, old);
+}
+
/* Apply a GDB command to a list of threads. List syntax is a whitespace
seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
of two numbers seperated by a hyphen. Examples:
- 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 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
+ */
static void
-thread_apply_all_command (cmd, from_tty)
- char *cmd;
- int from_tty;
+thread_apply_all_command (char *cmd, int from_tty)
{
struct thread_info *tp;
struct cleanup *old_chain;
+ struct cleanup *saved_cmd_cleanup_chain;
+ char *saved_cmd;
+ struct frame_id saved_frame_id;
+ ptid_t current_ptid;
+ int thread_has_changed = 0;
if (cmd == NULL || *cmd == '\000')
- error ("Please specify a command following the thread ID list");
-
- old_chain = make_cleanup ((make_cleanup_func) restore_current_thread,
- (void *) inferior_pid);
-
+ error (_("Please specify a command following the thread ID list"));
+
+ current_ptid = inferior_ptid;
+ saved_frame_id = get_frame_id (get_selected_frame (NULL));
+ old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id);
+
+ /* It is safe to update the thread list now, before
+ traversing it for "thread apply all". MVS */
+ target_find_new_threads ();
+
+ /* Save a copy of the command in case it is clobbered by
+ execute_command */
+ saved_cmd = xstrdup (cmd);
+ saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd);
for (tp = thread_list; tp; tp = tp->next)
if (thread_alive (tp))
{
- switch_to_thread (tp->pid);
-#ifdef HPUXHPPA
- printf_filtered ("\nThread %d (%s):\n",
- tp->num,
- target_tid_to_str (inferior_pid));
-#else
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_pid));
-#endif
+ switch_to_thread (tp->ptid);
+ printf_filtered (_("\nThread %d (%s):\n"),
+ tp->num, target_tid_to_str (inferior_ptid));
execute_command (cmd, from_tty);
+ strcpy (cmd, saved_cmd); /* Restore exact command used previously */
}
+
+ if (!ptid_equal (current_ptid, inferior_ptid))
+ thread_has_changed = 1;
+
+ do_cleanups (saved_cmd_cleanup_chain);
+ do_cleanups (old_chain);
+ /* Print stack frame only if we changed thread. */
+ if (thread_has_changed)
+ print_stack_frame (get_current_frame (), 1, SRC_LINE);
+
}
static void
-thread_apply_command (tidlist, from_tty)
- char *tidlist;
- int from_tty;
+thread_apply_command (char *tidlist, int from_tty)
{
char *cmd;
char *p;
struct cleanup *old_chain;
+ struct cleanup *saved_cmd_cleanup_chain;
+ char *saved_cmd;
+ struct frame_id saved_frame_id;
+ ptid_t current_ptid;
+ int thread_has_changed = 0;
if (tidlist == NULL || *tidlist == '\000')
- error ("Please specify a thread ID list");
+ error (_("Please specify a thread ID list"));
- for (cmd = tidlist; *cmd != '\000' && !isalpha(*cmd); cmd++);
+ for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++);
if (*cmd == '\000')
- error ("Please specify a command following the thread ID list");
+ error (_("Please specify a command following the thread ID list"));
- old_chain = make_cleanup ((make_cleanup_func) restore_current_thread,
- (void *) inferior_pid);
+ current_ptid = inferior_ptid;
+ saved_frame_id = get_frame_id (get_selected_frame (NULL));
+ old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id);
+ /* Save a copy of the command in case it is clobbered by
+ execute_command */
+ saved_cmd = xstrdup (cmd);
+ saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd);
while (tidlist < cmd)
{
struct thread_info *tp;
start = strtol (tidlist, &p, 10);
if (p == tidlist)
- error ("Error parsing %s", tidlist);
+ error (_("Error parsing %s"), tidlist);
tidlist = p;
while (*tidlist == ' ' || *tidlist == '\t')
if (*tidlist == '-') /* Got a range of IDs? */
{
- tidlist++; /* Skip the - */
+ tidlist++; /* Skip the - */
end = strtol (tidlist, &p, 10);
if (p == tidlist)
- error ("Error parsing %s", tidlist);
+ error (_("Error parsing %s"), tidlist);
tidlist = p;
while (*tidlist == ' ' || *tidlist == '\t')
tp = find_thread_id (start);
if (!tp)
- warning ("Unknown thread %d.", start);
+ warning (_("Unknown thread %d."), start);
else if (!thread_alive (tp))
- warning ("Thread %d has terminated.", start);
+ warning (_("Thread %d has terminated."), start);
else
{
- switch_to_thread (tp->pid);
-#ifdef HPUXHPPA
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_tid_to_str (inferior_pid));
-#else
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_pid));
-#endif
+ switch_to_thread (tp->ptid);
+ printf_filtered (_("\nThread %d (%s):\n"), tp->num,
+ target_tid_to_str (inferior_ptid));
execute_command (cmd, from_tty);
+ strcpy (cmd, saved_cmd); /* Restore exact command used previously */
}
}
}
+
+ if (!ptid_equal (current_ptid, inferior_ptid))
+ thread_has_changed = 1;
+
+ do_cleanups (saved_cmd_cleanup_chain);
+ do_cleanups (old_chain);
+ /* Print stack frame only if we changed thread. */
+ if (thread_has_changed)
+ print_stack_frame (get_current_frame (), 1, SRC_LINE);
}
/* Switch to the specified thread. Will dispatch off to thread_apply_command
if prefix of arg is `apply'. */
static void
-thread_command (tidstr, from_tty)
- char *tidstr;
- int from_tty;
+thread_command (char *tidstr, int from_tty)
{
- int num;
- struct thread_info *tp;
-
if (!tidstr)
{
/* Don't generate an error, just say which thread is current. */
if (target_has_stack)
- printf_filtered ("[Current thread is %d (%s)]\n",
- pid_to_thread_id(inferior_pid),
-#if defined(HPUXHPPA)
- target_tid_to_str(inferior_pid)
-#else
- target_pid_to_str(inferior_pid)
-#endif
- );
+ printf_filtered (_("[Current thread is %d (%s)]\n"),
+ pid_to_thread_id (inferior_ptid),
+ target_tid_to_str (inferior_ptid));
else
- error ("No stack.");
+ error (_("No stack."));
return;
}
- num = atoi (tidstr);
+
+ 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)
+{
+ int num;
+ struct thread_info *tp;
+
+ num = value_as_long (parse_and_eval (tidstr));
tp = find_thread_id (num);
if (!tp)
- error ("Thread ID %d not known. Use the \"info threads\" command to\n\
-see the IDs of currently known threads.", num);
+ error (_("Thread ID %d not known."), num);
if (!thread_alive (tp))
- error ("Thread ID %d has terminated.\n", num);
+ error (_("Thread ID %d has terminated."), num);
- switch_to_thread (tp->pid);
+ switch_to_thread (tp->ptid);
- if (context_hook)
- context_hook (num);
+ ui_out_text (uiout, "[Switching to thread ");
+ ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid));
+ ui_out_text (uiout, " (");
+ ui_out_text (uiout, target_tid_to_str (inferior_ptid));
+ ui_out_text (uiout, ")]");
- printf_filtered ("[Switching to thread %d (%s)]\n",
- pid_to_thread_id (inferior_pid),
-#if defined(HPUXHPPA)
- target_tid_to_str (inferior_pid)
-#else
- target_pid_to_str (inferior_pid)
-#endif
- );
- print_stack_frame (selected_frame, selected_frame_level, 1);
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
+ return GDB_RC_OK;
+}
+
+enum gdb_rc
+gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message)
+{
+ if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr,
+ error_message, RETURN_MASK_ALL) < 0)
+ return GDB_RC_FAIL;
+ return GDB_RC_OK;
}
/* Commands with a prefix of `thread'. */
struct cmd_list_element *thread_cmd_list = NULL;
void
-_initialize_thread ()
+_initialize_thread (void)
{
static struct cmd_list_element *thread_apply_list = NULL;
add_info ("threads", info_threads_command,
- "IDs of currently known threads.");
+ _("IDs of currently known threads."));
- add_prefix_cmd ("thread", class_run, thread_command,
- "Use this command to switch between threads.\n\
-The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1,
- &cmdlist);
+ add_prefix_cmd ("thread", class_run, thread_command, _("\
+Use this command to switch between threads.\n\
+The new thread ID must be currently known."),
+ &thread_cmd_list, "thread ", 1, &cmdlist);
add_prefix_cmd ("apply", class_run, thread_apply_command,
- "Apply a command to a list of threads.",
- &thread_apply_list, "apply ", 1, &thread_cmd_list);
+ _("Apply a command to a list of threads."),
+ &thread_apply_list, "thread apply ", 1, &thread_cmd_list);
add_cmd ("all", class_run, thread_apply_all_command,
- "Apply a command to all threads.",
- &thread_apply_list);
+ _("Apply a command to all threads."), &thread_apply_list);
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