1 /* Multi-process/thread control for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1993
4 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
5 Free Software Foundation, Inc.
7 This file is part of GDB.
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.
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.
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
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
35 #include <sys/types.h>
38 /*#include "lynxos-core.h"*/
42 struct thread_info
*next
;
43 int pid
; /* Actual process id */
44 int num
; /* Convenient handle */
47 static struct thread_info
*thread_list
= NULL
;
48 static int highest_thread_num
;
50 static void thread_command
PARAMS ((char * tidstr
, int from_tty
));
52 static void prune_threads
PARAMS ((void));
54 static void thread_switch
PARAMS ((int pid
));
56 static struct thread_info
* find_thread_id
PARAMS ((int num
));
61 struct thread_info
*tp
, *tpnext
;
66 for (tp
= thread_list
; tp
; tp
= tpnext
)
73 highest_thread_num
= 0;
80 struct thread_info
*tp
;
82 tp
= (struct thread_info
*) xmalloc (sizeof (struct thread_info
));
85 tp
->num
= ++highest_thread_num
;
86 tp
->next
= thread_list
;
90 static struct thread_info
*
94 struct thread_info
*tp
;
96 for (tp
= thread_list
; tp
; tp
= tp
->next
)
104 valid_thread_id (num
)
107 struct thread_info
*tp
;
109 for (tp
= thread_list
; tp
; tp
= tp
->next
)
117 pid_to_thread_id (pid
)
120 struct thread_info
*tp
;
122 for (tp
= thread_list
; tp
; tp
= tp
->next
)
133 struct thread_info
*tp
;
135 for (tp
= thread_list
; tp
; tp
= tp
->next
)
139 return 0; /* Never heard of 'im */
145 struct thread_info
*tp
, *tpprev
;
149 for (tp
= thread_list
; tp
; tp
= tp
->next
)
153 tpprev
->next
= tp
->next
;
163 /* Print information about currently known threads */
166 info_threads_command (arg
, from_tty
)
170 struct thread_info
*tp
;
171 int current_pid
= inferior_pid
;
173 for (tp
= thread_list
; tp
; tp
= tp
->next
)
175 if (target_has_execution
176 && kill (tp
->pid
, 0) == -1)
178 tp
->pid
= -1; /* Mark it as dead */
182 if (tp
->pid
== current_pid
)
183 printf_filtered ("* ");
185 printf_filtered (" ");
187 printf_filtered ("%d %s ", tp
->num
, target_pid_to_str (tp
->pid
));
189 thread_switch (tp
->pid
);
190 print_stack_frame (selected_frame
, -1, 0);
193 thread_switch (current_pid
);
197 /* Switch from one thread to another. */
203 if (pid
== inferior_pid
)
207 flush_cached_frames ();
208 registers_changed ();
210 set_current_frame (create_new_frame (read_fp (), stop_pc
));
211 stop_frame_address
= FRAME_FP (get_current_frame ());
212 select_frame (get_current_frame (), 0);
216 restore_current_thread (pid
)
219 if (pid
!= inferior_pid
)
223 /* Apply a GDB command to a list of threads. List syntax is a whitespace
224 seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
225 of two numbers seperated by a hyphen. Examples:
227 thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
228 thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
229 thread apply all p x/i $pc Apply x/i $pc cmd to all threads
233 thread_apply_all_command (cmd
, from_tty
)
237 struct thread_info
*tp
;
238 struct cleanup
*old_chain
;
240 if (cmd
== NULL
|| *cmd
== '\000')
241 error ("Please specify a command following the thread ID list");
243 old_chain
= make_cleanup (restore_current_thread
, inferior_pid
);
245 for (tp
= thread_list
; tp
; tp
= tp
->next
)
247 thread_switch (tp
->pid
);
248 printf_filtered ("\nThread %d (%s):\n", tp
->num
,
249 target_pid_to_str (inferior_pid
));
250 execute_command (cmd
, from_tty
);
255 thread_apply_command (tidlist
, from_tty
)
261 struct cleanup
*old_chain
;
263 if (tidlist
== NULL
|| *tidlist
== '\000')
264 error ("Please specify a thread ID list");
266 for (cmd
= tidlist
; *cmd
!= '\000' && !isalpha(*cmd
); cmd
++);
269 error ("Please specify a command following the thread ID list");
271 old_chain
= make_cleanup (restore_current_thread
, inferior_pid
);
273 while (tidlist
< cmd
)
275 struct thread_info
*tp
;
278 start
= strtol (tidlist
, &p
, 10);
280 error ("Error parsing %s", tidlist
);
283 while (*tidlist
== ' ' || *tidlist
== '\t')
286 if (*tidlist
== '-') /* Got a range of IDs? */
288 tidlist
++; /* Skip the - */
289 end
= strtol (tidlist
, &p
, 10);
291 error ("Error parsing %s", tidlist
);
294 while (*tidlist
== ' ' || *tidlist
== '\t')
300 for (; start
<= end
; start
++)
302 tp
= find_thread_id (start
);
306 warning ("Unknown thread %d.", start
);
310 thread_switch (tp
->pid
);
311 printf_filtered ("\nThread %d (%s):\n", tp
->num
,
312 target_pid_to_str (inferior_pid
));
313 execute_command (cmd
, from_tty
);
318 /* Switch to the specified thread. Will dispatch off to thread_apply_command
319 if prefix of arg is `apply'. */
322 thread_command (tidstr
, from_tty
)
327 struct thread_info
*tp
;
330 error ("Please specify a thread ID. Use the \"info threads\" command to\n\
331 see the IDs of currently known threads.");
335 tp
= find_thread_id (num
);
338 error ("Thread ID %d not known. Use the \"info threads\" command to\n\
339 see the IDs of currently known threads.", num
);
341 thread_switch (tp
->pid
);
343 printf_filtered ("[Switching to %s]\n", target_pid_to_str (inferior_pid
));
344 print_stack_frame (selected_frame
, selected_frame_level
, 1);
348 _initialize_thread ()
350 static struct cmd_list_element
*thread_cmd_list
= NULL
;
351 static struct cmd_list_element
*thread_apply_list
= NULL
;
352 extern struct cmd_list_element
*cmdlist
;
354 add_info ("threads", info_threads_command
,
355 "IDs of currently known threads.");
357 add_prefix_cmd ("thread", class_run
, thread_command
,
358 "Use this command to switch between threads.\n\
359 The new thread ID must be currently known.", &thread_cmd_list
, "thread ", 1,
362 add_prefix_cmd ("apply", class_run
, thread_apply_command
,
363 "Apply a command to a list of threads.",
364 &thread_apply_list
, "apply ", 1, &thread_cmd_list
);
366 add_cmd ("all", class_run
, thread_apply_all_command
,
367 "Apply a command to all threads.",
370 add_com_alias ("t", "thread", class_run
, 1);
This page took 0.039405 seconds and 4 git commands to generate.