[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));

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
25286543 SG	61	static void thread_command PARAMS ((char * tidstr, int from_tty));
	62
	63	static void prune_threads PARAMS ((void));
	64
	65	static void thread_switch PARAMS ((int pid));
	66
de43d7d0 SG	67	static struct thread_info * find_thread_id PARAMS ((int num));
de43d7d0 SG	68
25286543 SG	69	void
	70	init_thread_list ()
	71	{
	72	struct thread_info tp, tpnext;
	73
	74	if (!thread_list)
	75	return;
	76
	77	for (tp = thread_list; tp; tp = tpnext)
	78	{
	79	tpnext = tp->next;
	80	free (tp);
	81	}
	82
	83	thread_list = NULL;
	84	highest_thread_num = 0;
	85	}
	86
	87	void
	88	add_thread (pid)
	89	int pid;
	90	{
	91	struct thread_info *tp;
	92
3082244d	93	tp = (struct thread_info *) xmalloc (sizeof (struct thread_info));
25286543 SG	94
	95	tp->pid = pid;
	96	tp->num = ++highest_thread_num;
88a294b1 JL	97	tp->prev_pc = 0;
	98	tp->prev_func_start = 0;
	99	tp->prev_func_name = NULL;
	100	tp->step_range_start = 0;
	101	tp->step_range_end = 0;
	102	tp->step_frame_address =0;
	103	tp->step_resume_breakpoint = 0;
	104	tp->through_sigtramp_breakpoint = 0;
	105	tp->handling_longjmp = 0;
	106	tp->trap_expected = 0;
	107	tp->another_trap = 0;
25286543 SG	108	tp->next = thread_list;
	109	thread_list = tp;
	110	}
	111
	112	static struct thread_info *
	113	find_thread_id (num)
	114	int num;
	115	{
	116	struct thread_info *tp;
	117
	118	for (tp = thread_list; tp; tp = tp->next)
	119	if (tp->num == num)
	120	return tp;
	121
	122	return NULL;
	123	}
	124
de43d7d0 SG	125	int
	126	valid_thread_id (num)
	127	int num;
	128	{
	129	struct thread_info *tp;
	130
	131	for (tp = thread_list; tp; tp = tp->next)
	132	if (tp->num == num)
	133	return 1;
	134
	135	return 0;
	136	}
	137
	138	int
	139	pid_to_thread_id (pid)
	140	int pid;
	141	{
	142	struct thread_info *tp;
	143
	144	for (tp = thread_list; tp; tp = tp->next)
	145	if (tp->pid == pid)
	146	return tp->num;
	147
	148	return 0;
	149	}
	150
25286543 SG	151	int
	152	in_thread_list (pid)
	153	int pid;
	154	{
	155	struct thread_info *tp;
	156
	157	for (tp = thread_list; tp; tp = tp->next)
	158	if (tp->pid == pid)
	159	return 1;
	160
	161	return 0; /* Never heard of 'im */
	162	}
	163
88a294b1 JL	164	/* Load infrun state for the thread PID. */
	165
	166	void load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
	167	trap_expected, step_resume_breakpoint,
	168	through_sigtramp_breakpoint, step_range_start,
	169	step_range_end, step_frame_address,
	170	handling_longjmp, another_trap)
	171	int pid;
	172	CORE_ADDR *prev_pc;
	173	CORE_ADDR *prev_func_start;
	174	char **prev_func_name;
	175	int *trap_expected;
	176	struct breakpoint **step_resume_breakpoint;
	177	struct breakpoint **through_sigtramp_breakpoint;
	178	CORE_ADDR *step_range_start;
	179	CORE_ADDR *step_range_end;
	180	CORE_ADDR *step_frame_address;
	181	int *handling_longjmp;
	182	int *another_trap;
	183	{
	184	struct thread_info *tp;
	185
	186	/* If we can't find the thread, then we're debugging a single threaded
	187	process. No need to do anything in that case. */
	188	tp = find_thread_id (pid_to_thread_id (pid));
	189	if (tp == NULL)
	190	return;
	191
	192	*prev_pc = tp->prev_pc;
	193	*prev_func_start = tp->prev_func_start;
	194	*prev_func_name = tp->prev_func_name;
	195	*step_resume_breakpoint = tp->step_resume_breakpoint;
	196	*step_range_start = tp->step_range_start;
	197	*step_range_end = tp->step_range_end;
	198	*step_frame_address = tp->step_frame_address;
	199	*through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
	200	*handling_longjmp = tp->handling_longjmp;
	201	*trap_expected = tp->trap_expected;
	202	*another_trap = tp->another_trap;
	203	}
	204
	205	/* Save infrun state for the thread PID. */
	206
	207	void save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name,
	208	trap_expected, step_resume_breakpoint,
	209	through_sigtramp_breakpoint, step_range_start,
	210	step_range_end, step_frame_address,
	211	handling_longjmp, another_trap)
	212	int pid;
	213	CORE_ADDR prev_pc;
	214	CORE_ADDR prev_func_start;
	215	char *prev_func_name;
	216	int trap_expected;
	217	struct breakpoint *step_resume_breakpoint;
	218	struct breakpoint *through_sigtramp_breakpoint;
	219	CORE_ADDR step_range_start;
	220	CORE_ADDR step_range_end;
	221	CORE_ADDR step_frame_address;
	222	int handling_longjmp;
	223	int another_trap;
	224	{
	225	struct thread_info *tp;
	226
	227	/* If we can't find the thread, then we're debugging a single-threaded
228	process. Nothing to do in that case. */
229	tp = find_thread_id (pid_to_thread_id (pid));
230	if (tp == NULL)
231	return;
232
233	tp->prev_pc = prev_pc;
234	tp->prev_func_start = prev_func_start;
235	tp->prev_func_name = prev_func_name;
236	tp->step_resume_breakpoint = step_resume_breakpoint;
237	tp->step_range_start = step_range_start;
238	tp->step_range_end = step_range_end;
239	tp->step_frame_address = step_frame_address;
240	tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
241	tp->handling_longjmp = handling_longjmp;
242	tp->trap_expected = trap_expected;
243	tp->another_trap = another_trap;
244	}
245
25286543 SG	246	static void
	247	prune_threads ()
	248	{
	249	struct thread_info tp, tpprev;
	250
	251	tpprev = 0;
	252
	253	for (tp = thread_list; tp; tp = tp->next)
	254	if (tp->pid == -1)
	255	{
	256	if (tpprev)
	257	tpprev->next = tp->next;
	258	else
	259	thread_list = NULL;
	260
	261	free (tp);
	262	}
	263	else
	264	tpprev = tp;
	265	}
	266
	267	/* Print information about currently known threads */
	268
	269	static void
	270	info_threads_command (arg, from_tty)
	271	char *arg;
	272	int from_tty;
	273	{
	274	struct thread_info *tp;
	275	int current_pid = inferior_pid;
	276
4cc1b3f7 JK	277	/* Avoid coredumps which would happen if we tried to access a NULL
	278	selected_frame. */
	279	if (!target_has_stack) error ("No stack.");
	280
25286543 SG	281	for (tp = thread_list; tp; tp = tp->next)
25286543 SG	282	{
43fc25c8	283	if (! target_thread_alive (tp->pid))
25286543	284	{
46c28185	285	tp->pid = -1; /* Mark it as dead */
25286543 SG	286	continue;
	287	}
	288
	289	if (tp->pid == current_pid)
	290	printf_filtered ("* ");
	291	else
	292	printf_filtered (" ");
	293
	294	printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid));
	295
	296	thread_switch (tp->pid);
	297	print_stack_frame (selected_frame, -1, 0);
	298	}
	299
	300	thread_switch (current_pid);
	301	prune_threads ();
	302	}
	303
	304	/* Switch from one thread to another. */
	305
3082244d	306	static void
25286543 SG	307	thread_switch (pid)
	308	int pid;
	309	{
	310	if (pid == inferior_pid)
	311	return;
	312
	313	inferior_pid = pid;
25286543 SG	314	flush_cached_frames ();
	315	registers_changed ();
	316	stop_pc = read_pc();
25286543 SG	317	select_frame (get_current_frame (), 0);
	318	}
	319
5090e82c SG	320	static void
	321	restore_current_thread (pid)
	322	int pid;
	323	{
	324	if (pid != inferior_pid)
	325	thread_switch (pid);
	326	}
	327
	328	/* Apply a GDB command to a list of threads. List syntax is a whitespace
	329	seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
	330	of two numbers seperated by a hyphen. Examples:
	331
	332	thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
	333	thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
	334	thread apply all p x/i $pc Apply x/i $pc cmd to all threads
	335	*/
	336
	337	static void
	338	thread_apply_all_command (cmd, from_tty)
	339	char *cmd;
	340	int from_tty;
	341	{
	342	struct thread_info *tp;
	343	struct cleanup *old_chain;
	344
	345	if (cmd == NULL \|\| *cmd == '\000')
	346	error ("Please specify a command following the thread ID list");
	347
	348	old_chain = make_cleanup (restore_current_thread, inferior_pid);
	349
	350	for (tp = thread_list; tp; tp = tp->next)
	351	{
	352	thread_switch (tp->pid);
	353	printf_filtered ("\nThread %d (%s):\n", tp->num,
	354	target_pid_to_str (inferior_pid));
	355	execute_command (cmd, from_tty);
	356	}
	357	}
	358
	359	static void
	360	thread_apply_command (tidlist, from_tty)
	361	char *tidlist;
	362	int from_tty;
	363	{
	364	char *cmd;
	365	char *p;
	366	struct cleanup *old_chain;
	367
	368	if (tidlist == NULL \|\| *tidlist == '\000')
	369	error ("Please specify a thread ID list");
	370
	371	for (cmd = tidlist; cmd != '\000' && !isalpha(cmd); cmd++);
	372
	373	if (*cmd == '\000')
	374	error ("Please specify a command following the thread ID list");
	375
	376	old_chain = make_cleanup (restore_current_thread, inferior_pid);
	377
	378	while (tidlist < cmd)
	379	{
	380	struct thread_info *tp;
	381	int start, end;
	382
	383	start = strtol (tidlist, &p, 10);
384	if (p == tidlist)
385	error ("Error parsing %s", tidlist);
386	tidlist = p;
387
388	while (tidlist == ' ' \|\| tidlist == '\t')
389	tidlist++;
390
391	if (tidlist == '-') / Got a range of IDs? */
392	{
393	tidlist++; /* Skip the - */
394	end = strtol (tidlist, &p, 10);
395	if (p == tidlist)
396	error ("Error parsing %s", tidlist);
397	tidlist = p;
398
399	while (tidlist == ' ' \|\| tidlist == '\t')
400	tidlist++;
401	}
402	else
403	end = start;
404
405	for (; start <= end; start++)
406	{
407	tp = find_thread_id (start);
408
409	if (!tp)
410	{
411	warning ("Unknown thread %d.", start);
412	continue;
413	}
414
415	thread_switch (tp->pid);
416	printf_filtered ("\nThread %d (%s):\n", tp->num,
417	target_pid_to_str (inferior_pid));
418	execute_command (cmd, from_tty);
419	}
420	}
421	}
422
423	/* Switch to the specified thread. Will dispatch off to thread_apply_command
424	if prefix of arg is `apply'. */
425
25286543 SG	426	static void
	427	thread_command (tidstr, from_tty)
	428	char *tidstr;
	429	int from_tty;
	430	{
	431	int num;
	432	struct thread_info *tp;
	433
	434	if (!tidstr)
	435	error ("Please specify a thread ID. Use the \"info threads\" command to\n\
	436	see the IDs of currently known threads.");
	437
25286543 SG	438	num = atoi (tidstr);
	439
	440	tp = find_thread_id (num);
	441
	442	if (!tp)
	443	error ("Thread ID %d not known. Use the \"info threads\" command to\n\
	444	see the IDs of currently known threads.", num);
	445
	446	thread_switch (tp->pid);
	447
	448	printf_filtered ("[Switching to %s]\n", target_pid_to_str (inferior_pid));
	449	print_stack_frame (selected_frame, selected_frame_level, 1);
	450	}
	451
	452	void
	453	_initialize_thread ()
	454	{
5090e82c SG	455	static struct cmd_list_element *thread_cmd_list = NULL;
	456	static struct cmd_list_element *thread_apply_list = NULL;
	457	extern struct cmd_list_element *cmdlist;
	458
25286543 SG	459	add_info ("threads", info_threads_command,
25286543 SG	460	"IDs of currently known threads.");
5090e82c SG	461
	462	add_prefix_cmd ("thread", class_run, thread_command,
	463	"Use this command to switch between threads.\n\
	464	The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1,
	465	&cmdlist);
	466
	467	add_prefix_cmd ("apply", class_run, thread_apply_command,
	468	"Apply a command to a list of threads.",
	469	&thread_apply_list, "apply ", 1, &thread_cmd_list);
	470
	471	add_cmd ("all", class_run, thread_apply_all_command,
	472	"Apply a command to all threads.",
	473	&thread_apply_list);
	474
	475	add_com_alias ("t", "thread", class_run, 1);
25286543	476	}