[deliverable/binutils-gdb.git] / gdb / thread.c

/* Multi-process/thread control for GDB, the GNU debugger.
   Copyright 1986, 1987, 1988, 1993

   Contributed by Lynx Real-Time Systems, Inc.  Los Gatos, CA.
   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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "symtab.h"
#include "frame.h"
#include "inferior.h"
#include "environ.h"
#include "value.h"
#include "target.h"
#include "gdbthread.h"
#include "command.h"
#include "gdbcmd.h"

#include <ctype.h>
#include <sys/types.h>
#include <signal.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;
};

static struct thread_info *thread_list = NULL;
static int highest_thread_num;

static void
thread_command PARAMS ((char * tidstr, int from_tty));

static void
prune_threads PARAMS ((void));

static void
thread_switch PARAMS ((int pid));

static struct thread_info *
find_thread_id PARAMS ((int num));

static void
info_threads_command PARAMS ((char *, int));

static void
restore_current_thread PARAMS ((int));

static void
thread_apply_all_command PARAMS ((char *, int));

static void
thread_apply_command PARAMS ((char *, int));

void
init_thread_list ()
{
  struct thread_info *tp, *tpnext;

  if (!thread_list)
    return;

  for (tp = thread_list; tp; tp = tpnext)
    {
      tpnext = tp->next;
      free (tp);
    }

  thread_list = NULL;
  highest_thread_num = 0;
}

void
add_thread (pid)
     int pid;
{
  struct thread_info *tp;

  tp = (struct thread_info *) xmalloc (sizeof (struct thread_info));

  tp->pid = pid;
  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->next = thread_list;
  thread_list = tp;
}

static struct thread_info *
find_thread_id (num)
    int num;
{
  struct thread_info *tp;

  for (tp = thread_list; tp; tp = tp->next)
    if (tp->num == num)
      return tp;

  return NULL;
}

int
valid_thread_id (num)
    int num;
{
  struct thread_info *tp;

  for (tp = thread_list; tp; tp = tp->next)
    if (tp->num == num)
      return 1;

  return 0;
}

int
pid_to_thread_id (pid)
    int pid;
{
  struct thread_info *tp;

  for (tp = thread_list; tp; tp = tp->next)
    if (tp->pid == pid)
      return tp->num;

  return 0;
}

int
in_thread_list (pid)
    int pid;
{
  struct thread_info *tp;

  for (tp = thread_list; tp; tp = tp->next)
    if (tp->pid == pid)
      return 1;

  return 0;			/* Never heard of 'im */
}

/* 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)
     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;
{
  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));
  if (tp == NULL)
    return;

  *prev_pc = tp->prev_pc;
  *prev_func_start = tp->prev_func_start;
  *prev_func_name = tp->prev_func_name;
  *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;
}

/* 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)
     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;
{
  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));
  if (tp == NULL)
    return;

  tp->prev_pc = prev_pc;
  tp->prev_func_start = prev_func_start;
  tp->prev_func_name = prev_func_name;
  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;
}

static void
prune_threads ()
{
  struct thread_info *tp, *tpprev;

  tpprev = 0;

  for (tp = thread_list; tp; tp = tp->next)
    if (tp->pid == -1)
      {
 	if (tpprev)
	  tpprev->next = tp->next;
 	else
	  thread_list = NULL;

	free (tp);
      }
    else
      tpprev = tp;
}

/* Print information about currently known threads */

static void
info_threads_command (arg, from_tty)
     char *arg;
     int from_tty;
{
  struct thread_info *tp;
  int current_pid = inferior_pid;

  /* Avoid coredumps which would happen if we tried to access a NULL
     selected_frame.  */
  if (!target_has_stack) error ("No stack.");

  for (tp = thread_list; tp; tp = tp->next)
    {
      if (! target_thread_alive (tp->pid))
 	{
	  tp->pid = -1;	/* Mark it as dead */
	  continue;
 	}

      if (tp->pid == current_pid)
	printf_filtered ("* ");
      else
	printf_filtered ("  ");

      printf_filtered ("%d %s  ", tp->num, target_pid_to_str (tp->pid));

      thread_switch (tp->pid);
      print_stack_frame (selected_frame, -1, 0);
    }

  thread_switch (current_pid);
  prune_threads ();
}

/* Switch from one thread to another. */

static void
thread_switch (pid)
     int pid;
{
  if (pid == inferior_pid)
    return;

  inferior_pid = pid;
  flush_cached_frames ();
  registers_changed ();
  stop_pc = read_pc();
  select_frame (get_current_frame (), 0);
}

static void
restore_current_thread (pid)
     int pid;
{
  if (pid != inferior_pid)
    thread_switch (pid);
}

/* 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
*/

static void
thread_apply_all_command (cmd, from_tty)
     char *cmd;
     int from_tty;
{
  struct thread_info *tp;
  struct cleanup *old_chain;

  if (cmd == NULL || *cmd == '\000')
    error ("Please specify a command following the thread ID list");

  old_chain = make_cleanup (restore_current_thread, inferior_pid);

  for (tp = thread_list; tp; tp = tp->next)
    {
      thread_switch (tp->pid);
      printf_filtered ("\nThread %d (%s):\n", tp->num,
		       target_pid_to_str (inferior_pid));
      execute_command (cmd, from_tty);
    }
}

static void
thread_apply_command (tidlist, from_tty)
     char *tidlist;
     int from_tty;
{
  char *cmd;
  char *p;
  struct cleanup *old_chain;

  if (tidlist == NULL || *tidlist == '\000')
    error ("Please specify a thread ID list");

  for (cmd = tidlist; *cmd != '\000' && !isalpha(*cmd); cmd++);

  if (*cmd == '\000')
    error ("Please specify a command following the thread ID list");

  old_chain = make_cleanup (restore_current_thread, inferior_pid);

  while (tidlist < 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++;

      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;

      for (; start <= end; start++)
	{
	  tp = find_thread_id (start);

	  if (!tp)
	    {
	      warning ("Unknown thread %d.", start);
	      continue;
	    }

	  thread_switch (tp->pid);
	  printf_filtered ("\nThread %d (%s):\n", tp->num,
			   target_pid_to_str (inferior_pid));
	  execute_command (cmd, from_tty);
	}
    }
}

/* 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;
{
  int num;
  struct thread_info *tp;

  if (!tidstr)
    error ("Please specify a thread ID.  Use the \"info threads\" command to\n\
see the IDs of currently known threads.");

  num = atoi (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);

  thread_switch (tp->pid);

  printf_filtered ("[Switching to %s]\n", target_pid_to_str (inferior_pid));
  print_stack_frame (selected_frame, selected_frame_level, 1);
}

void
_initialize_thread ()
{
  static struct cmd_list_element *thread_cmd_list = NULL;
  static struct cmd_list_element *thread_apply_list = NULL;
  extern struct cmd_list_element *cmdlist;

  add_info ("threads", info_threads_command,
	    "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 ("apply", class_run, thread_apply_command,
		  "Apply a command to a list of threads.",
		  &thread_apply_list, "apply ", 1, &thread_cmd_list);

  add_cmd ("all", class_run, thread_apply_all_command,
	   "Apply a command to all threads.",
	   &thread_apply_list);

  add_com_alias ("t", "thread", class_run, 1);
}
Commit	Line	Data
da0baf42 SG	1	/* Multi-process/thread control for GDB, the GNU debugger.
	2	Copyright 1986, 1987, 1988, 1993
	3
	4	Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
	5	Free Software Foundation, Inc.
	6
	7	This file is part of GDB.
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
6c9638b4	21	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25286543 SG	22
	23	#include "defs.h"
	24	#include "symtab.h"
	25	#include "frame.h"
	26	#include "inferior.h"
	27	#include "environ.h"
	28	#include "value.h"
	29	#include "target.h"
fdfa3315	30	#include "gdbthread.h"
46c28185	31	#include "command.h"
89ce0c8f	32	#include "gdbcmd.h"
25286543	33
89ce0c8f	34	#include <ctype.h>
25286543 SG	35	#include <sys/types.h>
	36	#include <signal.h>
	37
	38	/#include "lynxos-core.h"/
	39
	40	struct thread_info
	41	{
	42	struct thread_info *next;
	43	int pid; /* Actual process id */
	44	int num; /* Convenient handle */
88a294b1 JL	45	CORE_ADDR prev_pc; /* State from wait_for_inferior */
	46	CORE_ADDR prev_func_start;
	47	char *prev_func_name;
	48	struct breakpoint *step_resume_breakpoint;
	49	struct breakpoint *through_sigtramp_breakpoint;
	50	CORE_ADDR step_range_start;
	51	CORE_ADDR step_range_end;
	52	CORE_ADDR step_frame_address;
	53	int trap_expected;
	54	int handling_longjmp;
	55	int another_trap;
25286543 SG	56	};
	57
	58	static struct thread_info *thread_list = NULL;
	59	static int highest_thread_num;
	60
b607efe7 FF	61	static void
b607efe7 FF	62	thread_command PARAMS ((char * tidstr, int from_tty));
25286543	63
b607efe7 FF	64	static void
b607efe7 FF	65	prune_threads PARAMS ((void));
25286543	66
b607efe7 FF	67	static void
b607efe7 FF	68	thread_switch PARAMS ((int pid));
25286543	69
b607efe7 FF	70	static struct thread_info *
	71	find_thread_id PARAMS ((int num));
	72
	73	static void
	74	info_threads_command PARAMS ((char *, int));
	75
	76	static void
	77	restore_current_thread PARAMS ((int));
	78
	79	static void
	80	thread_apply_all_command PARAMS ((char *, int));
	81
	82	static void
	83	thread_apply_command PARAMS ((char *, int));
de43d7d0	84
25286543 SG	85	void
	86	init_thread_list ()
	87	{
	88	struct thread_info tp, tpnext;
	89
	90	if (!thread_list)
	91	return;
	92
	93	for (tp = thread_list; tp; tp = tpnext)
	94	{
	95	tpnext = tp->next;
	96	free (tp);
	97	}
	98
	99	thread_list = NULL;
	100	highest_thread_num = 0;
	101	}
	102
	103	void
	104	add_thread (pid)
	105	int pid;
	106	{
	107	struct thread_info *tp;
	108
3082244d	109	tp = (struct thread_info *) xmalloc (sizeof (struct thread_info));
25286543 SG	110
	111	tp->pid = pid;
	112	tp->num = ++highest_thread_num;
88a294b1 JL	113	tp->prev_pc = 0;
	114	tp->prev_func_start = 0;
	115	tp->prev_func_name = NULL;
	116	tp->step_range_start = 0;
	117	tp->step_range_end = 0;
	118	tp->step_frame_address =0;
	119	tp->step_resume_breakpoint = 0;
	120	tp->through_sigtramp_breakpoint = 0;
	121	tp->handling_longjmp = 0;
	122	tp->trap_expected = 0;
	123	tp->another_trap = 0;
25286543 SG	124	tp->next = thread_list;
	125	thread_list = tp;
	126	}
	127
	128	static struct thread_info *
	129	find_thread_id (num)
	130	int num;
	131	{
	132	struct thread_info *tp;
	133
	134	for (tp = thread_list; tp; tp = tp->next)
	135	if (tp->num == num)
	136	return tp;
	137
	138	return NULL;
	139	}
	140
de43d7d0 SG	141	int
	142	valid_thread_id (num)
	143	int num;
	144	{
	145	struct thread_info *tp;
	146
	147	for (tp = thread_list; tp; tp = tp->next)
	148	if (tp->num == num)
	149	return 1;
	150
	151	return 0;
	152	}
	153
	154	int
	155	pid_to_thread_id (pid)
	156	int pid;
	157	{
	158	struct thread_info *tp;
	159
	160	for (tp = thread_list; tp; tp = tp->next)
	161	if (tp->pid == pid)
	162	return tp->num;
	163
	164	return 0;
	165	}
	166
25286543 SG	167	int
	168	in_thread_list (pid)
	169	int pid;
	170	{
	171	struct thread_info *tp;
	172
	173	for (tp = thread_list; tp; tp = tp->next)
	174	if (tp->pid == pid)
	175	return 1;
	176
	177	return 0; /* Never heard of 'im */
	178	}
	179
88a294b1 JL	180	/* Load infrun state for the thread PID. */
	181
	182	void load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
	183	trap_expected, step_resume_breakpoint,
	184	through_sigtramp_breakpoint, step_range_start,
	185	step_range_end, step_frame_address,
	186	handling_longjmp, another_trap)
	187	int pid;
	188	CORE_ADDR *prev_pc;
	189	CORE_ADDR *prev_func_start;
	190	char **prev_func_name;
	191	int *trap_expected;
	192	struct breakpoint **step_resume_breakpoint;
	193	struct breakpoint **through_sigtramp_breakpoint;
	194	CORE_ADDR *step_range_start;
	195	CORE_ADDR *step_range_end;
	196	CORE_ADDR *step_frame_address;
	197	int *handling_longjmp;
	198	int *another_trap;
	199	{
	200	struct thread_info *tp;
	201
	202	/* If we can't find the thread, then we're debugging a single threaded
	203	process. No need to do anything in that case. */
	204	tp = find_thread_id (pid_to_thread_id (pid));
	205	if (tp == NULL)
	206	return;
	207
	208	*prev_pc = tp->prev_pc;
	209	*prev_func_start = tp->prev_func_start;
	210	*prev_func_name = tp->prev_func_name;
	211	*step_resume_breakpoint = tp->step_resume_breakpoint;
	212	*step_range_start = tp->step_range_start;
	213	*step_range_end = tp->step_range_end;
	214	*step_frame_address = tp->step_frame_address;
	215	*through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
	216	*handling_longjmp = tp->handling_longjmp;
	217	*trap_expected = tp->trap_expected;
	218	*another_trap = tp->another_trap;
	219	}
	220
	221	/* Save infrun state for the thread PID. */
	222
	223	void save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
	224	trap_expected, step_resume_breakpoint,
	225	through_sigtramp_breakpoint, step_range_start,
	226	step_range_end, step_frame_address,
	227	handling_longjmp, another_trap)
	228	int pid;
	229	CORE_ADDR prev_pc;
	230	CORE_ADDR prev_func_start;
	231	char *prev_func_name;
	232	int trap_expected;
	233	struct breakpoint *step_resume_breakpoint;
	234	struct breakpoint *through_sigtramp_breakpoint;
	235	CORE_ADDR step_range_start;
	236	CORE_ADDR step_range_end;
	237	CORE_ADDR step_frame_address;
	238	int handling_longjmp;
	239	int another_trap;
	240	{
	241	struct thread_info *tp;
	242
	243	/* If we can't find the thread, then we're debugging a single-threaded
244	process. Nothing to do in that case. */
245	tp = find_thread_id (pid_to_thread_id (pid));
246	if (tp == NULL)
247	return;
248
249	tp->prev_pc = prev_pc;
250	tp->prev_func_start = prev_func_start;
251	tp->prev_func_name = prev_func_name;
252	tp->step_resume_breakpoint = step_resume_breakpoint;
253	tp->step_range_start = step_range_start;
254	tp->step_range_end = step_range_end;
255	tp->step_frame_address = step_frame_address;
256	tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
257	tp->handling_longjmp = handling_longjmp;
258	tp->trap_expected = trap_expected;
259	tp->another_trap = another_trap;
260	}
261
25286543 SG	262	static void
	263	prune_threads ()
	264	{
	265	struct thread_info tp, tpprev;
	266
	267	tpprev = 0;
	268
	269	for (tp = thread_list; tp; tp = tp->next)
	270	if (tp->pid == -1)
	271	{
	272	if (tpprev)
	273	tpprev->next = tp->next;
	274	else
	275	thread_list = NULL;
	276
	277	free (tp);
	278	}
	279	else
	280	tpprev = tp;
	281	}
	282
	283	/* Print information about currently known threads */
	284
	285	static void
	286	info_threads_command (arg, from_tty)
	287	char *arg;
	288	int from_tty;
	289	{
	290	struct thread_info *tp;
	291	int current_pid = inferior_pid;
	292
4cc1b3f7 JK	293	/* Avoid coredumps which would happen if we tried to access a NULL
	294	selected_frame. */
	295	if (!target_has_stack) error ("No stack.");
	296
25286543 SG	297	for (tp = thread_list; tp; tp = tp->next)
25286543 SG	298	{
43fc25c8	299	if (! target_thread_alive (tp->pid))
25286543	300	{
46c28185	301	tp->pid = -1; /* Mark it as dead */
25286543 SG	302	continue;
	303	}
	304
	305	if (tp->pid == current_pid)
	306	printf_filtered ("* ");
	307	else
	308	printf_filtered (" ");
	309
	310	printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid));
	311
	312	thread_switch (tp->pid);
	313	print_stack_frame (selected_frame, -1, 0);
	314	}
	315
	316	thread_switch (current_pid);
	317	prune_threads ();
	318	}
	319
	320	/* Switch from one thread to another. */
	321
3082244d	322	static void
25286543 SG	323	thread_switch (pid)
	324	int pid;
	325	{
	326	if (pid == inferior_pid)
	327	return;
	328
	329	inferior_pid = pid;
25286543 SG	330	flush_cached_frames ();
	331	registers_changed ();
	332	stop_pc = read_pc();
25286543 SG	333	select_frame (get_current_frame (), 0);
	334	}
	335
5090e82c SG	336	static void
	337	restore_current_thread (pid)
	338	int pid;
	339	{
	340	if (pid != inferior_pid)
	341	thread_switch (pid);
	342	}
	343
	344	/* Apply a GDB command to a list of threads. List syntax is a whitespace
	345	seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
	346	of two numbers seperated by a hyphen. Examples:
	347
	348	thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
	349	thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
	350	thread apply all p x/i $pc Apply x/i $pc cmd to all threads
	351	*/
	352
	353	static void
	354	thread_apply_all_command (cmd, from_tty)
	355	char *cmd;
	356	int from_tty;
	357	{
	358	struct thread_info *tp;
	359	struct cleanup *old_chain;
	360
	361	if (cmd == NULL \|\| *cmd == '\000')
	362	error ("Please specify a command following the thread ID list");
	363
	364	old_chain = make_cleanup (restore_current_thread, inferior_pid);
	365
	366	for (tp = thread_list; tp; tp = tp->next)
	367	{
	368	thread_switch (tp->pid);
	369	printf_filtered ("\nThread %d (%s):\n", tp->num,
	370	target_pid_to_str (inferior_pid));
	371	execute_command (cmd, from_tty);
	372	}
	373	}
	374
	375	static void
	376	thread_apply_command (tidlist, from_tty)
	377	char *tidlist;
	378	int from_tty;
	379	{
	380	char *cmd;
	381	char *p;
	382	struct cleanup *old_chain;
	383
	384	if (tidlist == NULL \|\| *tidlist == '\000')
	385	error ("Please specify a thread ID list");
	386
	387	for (cmd = tidlist; cmd != '\000' && !isalpha(cmd); cmd++);
	388
	389	if (*cmd == '\000')
	390	error ("Please specify a command following the thread ID list");
	391
	392	old_chain = make_cleanup (restore_current_thread, inferior_pid);
	393
	394	while (tidlist < cmd)
	395	{
	396	struct thread_info *tp;
	397	int start, end;
	398
	399	start = strtol (tidlist, &p, 10);
400	if (p == tidlist)
401	error ("Error parsing %s", tidlist);
402	tidlist = p;
403
404	while (tidlist == ' ' \|\| tidlist == '\t')
405	tidlist++;
406
407	if (tidlist == '-') / Got a range of IDs? */
408	{
409	tidlist++; /* Skip the - */
410	end = strtol (tidlist, &p, 10);
411	if (p == tidlist)
412	error ("Error parsing %s", tidlist);
413	tidlist = p;
414
415	while (tidlist == ' ' \|\| tidlist == '\t')
416	tidlist++;
417	}
418	else
419	end = start;
420
421	for (; start <= end; start++)
422	{
423	tp = find_thread_id (start);
424
425	if (!tp)
426	{
427	warning ("Unknown thread %d.", start);
428	continue;
429	}
430
431	thread_switch (tp->pid);
432	printf_filtered ("\nThread %d (%s):\n", tp->num,
433	target_pid_to_str (inferior_pid));
434	execute_command (cmd, from_tty);
435	}
436	}
437	}
438
439	/* Switch to the specified thread. Will dispatch off to thread_apply_command
440	if prefix of arg is `apply'. */
441
25286543 SG	442	static void
	443	thread_command (tidstr, from_tty)
	444	char *tidstr;
	445	int from_tty;
	446	{
	447	int num;
	448	struct thread_info *tp;
	449
	450	if (!tidstr)
	451	error ("Please specify a thread ID. Use the \"info threads\" command to\n\
	452	see the IDs of currently known threads.");
	453
25286543 SG	454	num = atoi (tidstr);
	455
	456	tp = find_thread_id (num);
	457
	458	if (!tp)
	459	error ("Thread ID %d not known. Use the \"info threads\" command to\n\
	460	see the IDs of currently known threads.", num);
	461
	462	thread_switch (tp->pid);
	463
	464	printf_filtered ("[Switching to %s]\n", target_pid_to_str (inferior_pid));
	465	print_stack_frame (selected_frame, selected_frame_level, 1);
	466	}
	467
	468	void
	469	_initialize_thread ()
	470	{
5090e82c SG	471	static struct cmd_list_element *thread_cmd_list = NULL;
	472	static struct cmd_list_element *thread_apply_list = NULL;
	473	extern struct cmd_list_element *cmdlist;
	474
25286543 SG	475	add_info ("threads", info_threads_command,
25286543 SG	476	"IDs of currently known threads.");
5090e82c SG	477
	478	add_prefix_cmd ("thread", class_run, thread_command,
	479	"Use this command to switch between threads.\n\
	480	The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1,
	481	&cmdlist);
	482
	483	add_prefix_cmd ("apply", class_run, thread_apply_command,
	484	"Apply a command to a list of threads.",
	485	&thread_apply_list, "apply ", 1, &thread_cmd_list);
	486
	487	add_cmd ("all", class_run, thread_apply_all_command,
	488	"Apply a command to all threads.",
	489	&thread_apply_list);
	490
	491	add_com_alias ("t", "thread", class_run, 1);
25286543	492	}