| 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
| 2 | Copyright 1986, 1987, 1988, 1993, 1998 |
| 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 |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 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" |
| 30 | #include "gdbthread.h" |
| 31 | #include "command.h" |
| 32 | #include "gdbcmd.h" |
| 33 | |
| 34 | #include <ctype.h> |
| 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 */ |
| 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; |
| 56 | |
| 57 | /* This is set TRUE when a catchpoint of a shared library event |
| 58 | triggers. Since we don't wish to leave the inferior in the |
| 59 | solib hook when we report the event, we step the inferior |
| 60 | back to user code before stopping and reporting the event. |
| 61 | */ |
| 62 | int stepping_through_solib_after_catch; |
| 63 | |
| 64 | /* When stepping_through_solib_after_catch is TRUE, this is a |
| 65 | list of the catchpoints that should be reported as triggering |
| 66 | when we finally do stop stepping. |
| 67 | */ |
| 68 | bpstat stepping_through_solib_catchpoints; |
| 69 | |
| 70 | /* This is set to TRUE when this thread is in a signal handler |
| 71 | trampoline and we're single-stepping through it */ |
| 72 | int stepping_through_sigtramp; |
| 73 | |
| 74 | }; |
| 75 | |
| 76 | /* Prototypes for exported functions. */ |
| 77 | |
| 78 | void _initialize_thread PARAMS ((void)); |
| 79 | |
| 80 | /* Prototypes for local functions. */ |
| 81 | |
| 82 | #if !defined(FIND_NEW_THREADS) |
| 83 | #define FIND_NEW_THREADS target_find_new_threads |
| 84 | #endif |
| 85 | |
| 86 | static struct thread_info *thread_list = NULL; |
| 87 | static int highest_thread_num; |
| 88 | |
| 89 | static struct thread_info * find_thread_id PARAMS ((int num)); |
| 90 | |
| 91 | static void thread_command PARAMS ((char * tidstr, int from_tty)); |
| 92 | static void thread_apply_all_command PARAMS ((char *, int)); |
| 93 | static int thread_alive PARAMS ((struct thread_info *)); |
| 94 | static void info_threads_command PARAMS ((char *, int)); |
| 95 | static void thread_apply_command PARAMS ((char *, int)); |
| 96 | static void restore_current_thread PARAMS ((int)); |
| 97 | static void switch_to_thread PARAMS ((int pid)); |
| 98 | static void prune_threads PARAMS ((void)); |
| 99 | |
| 100 | /* If the host has threads, the host machine definition may set this |
| 101 | macro. But, for remote thread debugging, it gets more complex and |
| 102 | setting macros does not bind to the various target dependent |
| 103 | methods well. So, we use the vector target_thread_functions */ |
| 104 | |
| 105 | static struct target_thread_vector *target_thread_functions; |
| 106 | |
| 107 | int |
| 108 | target_find_new_threads () |
| 109 | { |
| 110 | int retval = 0; |
| 111 | if (target_thread_functions && |
| 112 | target_thread_functions->find_new_threads) |
| 113 | retval = (*(target_thread_functions->find_new_threads)) (); |
| 114 | return retval; /* no support */ |
| 115 | } |
| 116 | |
| 117 | |
| 118 | int |
| 119 | target_get_thread_info PARAMS ((gdb_threadref * ref, |
| 120 | int selection, /* FIXME: Selection */ |
| 121 | struct gdb_ext_thread_info * info)); |
| 122 | |
| 123 | int |
| 124 | target_get_thread_info (ref, selection, info) |
| 125 | |
| 126 | gdb_threadref *ref; |
| 127 | int selection; |
| 128 | /* FIXME: Selection */ |
| 129 | struct gdb_ext_thread_info *info; |
| 130 | |
| 131 | { |
| 132 | int retval = 0; |
| 133 | if (target_thread_functions |
| 134 | && target_thread_functions->get_thread_info) |
| 135 | retval = (*(target_thread_functions->get_thread_info)) (ref, selection, info); |
| 136 | return retval; |
| 137 | } |
| 138 | |
| 139 | |
| 140 | /* It is possible that these bind and unbinf functions implement a |
| 141 | stack the interface allows it, but its not implemented that way |
| 142 | */ |
| 143 | |
| 144 | |
| 145 | void |
| 146 | bind_target_thread_vector (vec) |
| 147 | struct target_thread_vector *vec; |
| 148 | { |
| 149 | target_thread_functions = vec; |
| 150 | } |
| 151 | |
| 152 | struct target_thread_vector * |
| 153 | unbind_target_thread_vector () |
| 154 | { |
| 155 | struct target_thread_vector *retval; |
| 156 | retval = target_thread_functions; |
| 157 | target_thread_functions = 0; |
| 158 | return retval; |
| 159 | } /* unbind_target_thread-vector */ |
| 160 | |
| 161 | void |
| 162 | init_thread_list () |
| 163 | { |
| 164 | struct thread_info *tp, *tpnext; |
| 165 | |
| 166 | if (!thread_list) |
| 167 | return; |
| 168 | |
| 169 | for (tp = thread_list; tp; tp = tpnext) |
| 170 | { |
| 171 | tpnext = tp->next; |
| 172 | free (tp); |
| 173 | } |
| 174 | |
| 175 | thread_list = NULL; |
| 176 | highest_thread_num = 0; |
| 177 | } |
| 178 | |
| 179 | void |
| 180 | add_thread (pid) |
| 181 | int pid; |
| 182 | { |
| 183 | struct thread_info *tp; |
| 184 | |
| 185 | tp = (struct thread_info *) xmalloc (sizeof (struct thread_info)); |
| 186 | |
| 187 | tp->pid = pid; |
| 188 | tp->num = ++highest_thread_num; |
| 189 | tp->prev_pc = 0; |
| 190 | tp->prev_func_start = 0; |
| 191 | tp->prev_func_name = NULL; |
| 192 | tp->step_range_start = 0; |
| 193 | tp->step_range_end = 0; |
| 194 | tp->step_frame_address =0; |
| 195 | tp->step_resume_breakpoint = 0; |
| 196 | tp->through_sigtramp_breakpoint = 0; |
| 197 | tp->handling_longjmp = 0; |
| 198 | tp->trap_expected = 0; |
| 199 | tp->another_trap = 0; |
| 200 | tp->stepping_through_solib_after_catch = 0; |
| 201 | tp->stepping_through_solib_catchpoints = NULL; |
| 202 | tp->stepping_through_sigtramp = 0; |
| 203 | tp->next = thread_list; |
| 204 | thread_list = tp; |
| 205 | } |
| 206 | |
| 207 | void |
| 208 | delete_thread (pid) |
| 209 | int pid; |
| 210 | { |
| 211 | struct thread_info *tp, *tpprev; |
| 212 | |
| 213 | tpprev = NULL; |
| 214 | |
| 215 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) |
| 216 | if (tp->pid == pid) |
| 217 | break; |
| 218 | |
| 219 | if (!tp) |
| 220 | return; |
| 221 | |
| 222 | if (tpprev) |
| 223 | tpprev->next = tp->next; |
| 224 | else |
| 225 | thread_list = tp->next; |
| 226 | |
| 227 | free (tp); |
| 228 | |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | static struct thread_info * |
| 233 | find_thread_id (num) |
| 234 | int num; |
| 235 | { |
| 236 | struct thread_info *tp; |
| 237 | |
| 238 | for (tp = thread_list; tp; tp = tp->next) |
| 239 | if (tp->num == num) |
| 240 | return tp; |
| 241 | |
| 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | int |
| 246 | valid_thread_id (num) |
| 247 | int num; |
| 248 | { |
| 249 | struct thread_info *tp; |
| 250 | |
| 251 | for (tp = thread_list; tp; tp = tp->next) |
| 252 | if (tp->num == num) |
| 253 | return 1; |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | int |
| 259 | pid_to_thread_id (pid) |
| 260 | int pid; |
| 261 | { |
| 262 | struct thread_info *tp; |
| 263 | |
| 264 | for (tp = thread_list; tp; tp = tp->next) |
| 265 | if (tp->pid == pid) |
| 266 | return tp->num; |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | int |
| 272 | thread_id_to_pid (num) |
| 273 | int num; |
| 274 | { |
| 275 | struct thread_info *thread = find_thread_id (num); |
| 276 | if (thread) |
| 277 | return thread->pid; |
| 278 | else |
| 279 | return -1; |
| 280 | } |
| 281 | |
| 282 | int |
| 283 | in_thread_list (pid) |
| 284 | int pid; |
| 285 | { |
| 286 | struct thread_info *tp; |
| 287 | |
| 288 | for (tp = thread_list; tp; tp = tp->next) |
| 289 | if (tp->pid == pid) |
| 290 | return 1; |
| 291 | |
| 292 | return 0; /* Never heard of 'im */ |
| 293 | } |
| 294 | |
| 295 | /* Load infrun state for the thread PID. */ |
| 296 | |
| 297 | void load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, |
| 298 | trap_expected, step_resume_breakpoint, |
| 299 | through_sigtramp_breakpoint, step_range_start, |
| 300 | step_range_end, step_frame_address, |
| 301 | handling_longjmp, another_trap, |
| 302 | stepping_through_solib_after_catch, |
| 303 | stepping_through_solib_catchpoints, |
| 304 | stepping_through_sigtramp) |
| 305 | int pid; |
| 306 | CORE_ADDR *prev_pc; |
| 307 | CORE_ADDR *prev_func_start; |
| 308 | char **prev_func_name; |
| 309 | int *trap_expected; |
| 310 | struct breakpoint **step_resume_breakpoint; |
| 311 | struct breakpoint **through_sigtramp_breakpoint; |
| 312 | CORE_ADDR *step_range_start; |
| 313 | CORE_ADDR *step_range_end; |
| 314 | CORE_ADDR *step_frame_address; |
| 315 | int *handling_longjmp; |
| 316 | int *another_trap; |
| 317 | int * stepping_through_solib_after_catch; |
| 318 | bpstat * stepping_through_solib_catchpoints; |
| 319 | int * stepping_through_sigtramp; |
| 320 | { |
| 321 | struct thread_info *tp; |
| 322 | |
| 323 | /* If we can't find the thread, then we're debugging a single threaded |
| 324 | process. No need to do anything in that case. */ |
| 325 | tp = find_thread_id (pid_to_thread_id (pid)); |
| 326 | if (tp == NULL) |
| 327 | return; |
| 328 | |
| 329 | *prev_pc = tp->prev_pc; |
| 330 | *prev_func_start = tp->prev_func_start; |
| 331 | *prev_func_name = tp->prev_func_name; |
| 332 | *step_resume_breakpoint = tp->step_resume_breakpoint; |
| 333 | *step_range_start = tp->step_range_start; |
| 334 | *step_range_end = tp->step_range_end; |
| 335 | *step_frame_address = tp->step_frame_address; |
| 336 | *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint; |
| 337 | *handling_longjmp = tp->handling_longjmp; |
| 338 | *trap_expected = tp->trap_expected; |
| 339 | *another_trap = tp->another_trap; |
| 340 | *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch; |
| 341 | *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints; |
| 342 | *stepping_through_sigtramp = tp->stepping_through_sigtramp; |
| 343 | } |
| 344 | |
| 345 | /* Save infrun state for the thread PID. */ |
| 346 | |
| 347 | void save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, |
| 348 | trap_expected, step_resume_breakpoint, |
| 349 | through_sigtramp_breakpoint, step_range_start, |
| 350 | step_range_end, step_frame_address, |
| 351 | handling_longjmp, another_trap, |
| 352 | stepping_through_solib_after_catch, |
| 353 | stepping_through_solib_catchpoints, |
| 354 | stepping_through_sigtramp) |
| 355 | int pid; |
| 356 | CORE_ADDR prev_pc; |
| 357 | CORE_ADDR prev_func_start; |
| 358 | char *prev_func_name; |
| 359 | int trap_expected; |
| 360 | struct breakpoint *step_resume_breakpoint; |
| 361 | struct breakpoint *through_sigtramp_breakpoint; |
| 362 | CORE_ADDR step_range_start; |
| 363 | CORE_ADDR step_range_end; |
| 364 | CORE_ADDR step_frame_address; |
| 365 | int handling_longjmp; |
| 366 | int another_trap; |
| 367 | int stepping_through_solib_after_catch; |
| 368 | bpstat stepping_through_solib_catchpoints; |
| 369 | int stepping_through_sigtramp; |
| 370 | { |
| 371 | struct thread_info *tp; |
| 372 | |
| 373 | /* If we can't find the thread, then we're debugging a single-threaded |
| 374 | process. Nothing to do in that case. */ |
| 375 | tp = find_thread_id (pid_to_thread_id (pid)); |
| 376 | if (tp == NULL) |
| 377 | return; |
| 378 | |
| 379 | tp->prev_pc = prev_pc; |
| 380 | tp->prev_func_start = prev_func_start; |
| 381 | tp->prev_func_name = prev_func_name; |
| 382 | tp->step_resume_breakpoint = step_resume_breakpoint; |
| 383 | tp->step_range_start = step_range_start; |
| 384 | tp->step_range_end = step_range_end; |
| 385 | tp->step_frame_address = step_frame_address; |
| 386 | tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint; |
| 387 | tp->handling_longjmp = handling_longjmp; |
| 388 | tp->trap_expected = trap_expected; |
| 389 | tp->another_trap = another_trap; |
| 390 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; |
| 391 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; |
| 392 | tp->stepping_through_sigtramp = stepping_through_sigtramp; |
| 393 | } |
| 394 | |
| 395 | /* Return true if TP is an active thread. */ |
| 396 | static int |
| 397 | thread_alive (tp) |
| 398 | struct thread_info *tp; |
| 399 | { |
| 400 | if (tp->pid == -1) |
| 401 | return 0; |
| 402 | if (! target_thread_alive (tp->pid)) |
| 403 | { |
| 404 | tp->pid = -1; /* Mark it as dead */ |
| 405 | return 0; |
| 406 | } |
| 407 | return 1; |
| 408 | } |
| 409 | |
| 410 | static void |
| 411 | prune_threads () |
| 412 | { |
| 413 | struct thread_info *tp, *tpprev, *next; |
| 414 | |
| 415 | tpprev = 0; |
| 416 | for (tp = thread_list; tp; tp = next) |
| 417 | { |
| 418 | next = tp->next; |
| 419 | if (!thread_alive (tp)) |
| 420 | { |
| 421 | if (tpprev) |
| 422 | tpprev->next = next; |
| 423 | else |
| 424 | thread_list = next; |
| 425 | free (tp); |
| 426 | } |
| 427 | else |
| 428 | tpprev = tp; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /* Print information about currently known threads |
| 433 | * |
| 434 | * Note: this has the drawback that it _really_ switches |
| 435 | * threads, which frees the frame cache. A no-side |
| 436 | * effects info-threads command would be nicer. |
| 437 | */ |
| 438 | |
| 439 | static void |
| 440 | info_threads_command (arg, from_tty) |
| 441 | char *arg; |
| 442 | int from_tty; |
| 443 | { |
| 444 | struct thread_info *tp; |
| 445 | int current_pid; |
| 446 | struct frame_info *cur_frame; |
| 447 | int saved_frame_level = selected_frame_level; |
| 448 | int counter; |
| 449 | |
| 450 | /* Avoid coredumps which would happen if we tried to access a NULL |
| 451 | selected_frame. */ |
| 452 | if (!target_has_stack) error ("No stack."); |
| 453 | |
| 454 | prune_threads (); |
| 455 | #if defined(FIND_NEW_THREADS) |
| 456 | FIND_NEW_THREADS (); |
| 457 | #endif |
| 458 | current_pid = inferior_pid; |
| 459 | for (tp = thread_list; tp; tp = tp->next) |
| 460 | { |
| 461 | if (tp->pid == current_pid) |
| 462 | printf_filtered ("* "); |
| 463 | else |
| 464 | printf_filtered (" "); |
| 465 | |
| 466 | #ifdef HPUXHPPA |
| 467 | printf_filtered ("%d %s ", tp->num, target_tid_to_str (tp->pid)); |
| 468 | #else |
| 469 | printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid)); |
| 470 | #endif |
| 471 | switch_to_thread (tp->pid); |
| 472 | if (selected_frame) |
| 473 | print_only_stack_frame (selected_frame, -1, 0); |
| 474 | else |
| 475 | printf_filtered ("[No stack.]\n"); |
| 476 | } |
| 477 | |
| 478 | switch_to_thread (current_pid); |
| 479 | |
| 480 | /* Code below copied from "up_silently_base" in "stack.c". |
| 481 | * It restores the frame set by the user before the "info threads" |
| 482 | * command. We have finished the info-threads display by switching |
| 483 | * back to the current thread. That switch has put us at the top |
| 484 | * of the stack (leaf frame). |
| 485 | */ |
| 486 | counter = saved_frame_level; |
| 487 | cur_frame = find_relative_frame(selected_frame, &counter); |
| 488 | if (counter != 0) |
| 489 | { |
| 490 | /* Ooops, can't restore, tell user where we are. */ |
| 491 | warning ("Couldn't restore frame in current thread, at frame 0"); |
| 492 | print_stack_frame (selected_frame, -1, 0); |
| 493 | } |
| 494 | else |
| 495 | { |
| 496 | select_frame(cur_frame, saved_frame_level); |
| 497 | } |
| 498 | |
| 499 | /* re-show current frame. */ |
| 500 | show_stack_frame(cur_frame); |
| 501 | } |
| 502 | |
| 503 | /* Switch from one thread to another. */ |
| 504 | |
| 505 | static void |
| 506 | switch_to_thread (pid) |
| 507 | int pid; |
| 508 | { |
| 509 | if (pid == inferior_pid) |
| 510 | return; |
| 511 | |
| 512 | inferior_pid = pid; |
| 513 | flush_cached_frames (); |
| 514 | registers_changed (); |
| 515 | stop_pc = read_pc(); |
| 516 | select_frame (get_current_frame (), 0); |
| 517 | } |
| 518 | |
| 519 | static void |
| 520 | restore_current_thread (pid) |
| 521 | int pid; |
| 522 | { |
| 523 | if (pid != inferior_pid) |
| 524 | { |
| 525 | switch_to_thread (pid); |
| 526 | print_stack_frame( get_current_frame(), 0, -1); |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
| 531 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist |
| 532 | of two numbers seperated by a hyphen. Examples: |
| 533 | |
| 534 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
| 535 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 |
| 536 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads |
| 537 | */ |
| 538 | |
| 539 | static void |
| 540 | thread_apply_all_command (cmd, from_tty) |
| 541 | char *cmd; |
| 542 | int from_tty; |
| 543 | { |
| 544 | struct thread_info *tp; |
| 545 | struct cleanup *old_chain; |
| 546 | |
| 547 | if (cmd == NULL || *cmd == '\000') |
| 548 | error ("Please specify a command following the thread ID list"); |
| 549 | |
| 550 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, |
| 551 | (void *) inferior_pid); |
| 552 | |
| 553 | for (tp = thread_list; tp; tp = tp->next) |
| 554 | if (thread_alive (tp)) |
| 555 | { |
| 556 | switch_to_thread (tp->pid); |
| 557 | #ifdef HPUXHPPA |
| 558 | printf_filtered ("\nThread %d (%s):\n", |
| 559 | tp->num, |
| 560 | target_tid_to_str (inferior_pid)); |
| 561 | #else |
| 562 | printf_filtered ("\nThread %d (%s):\n", tp->num, |
| 563 | target_pid_to_str (inferior_pid)); |
| 564 | #endif |
| 565 | execute_command (cmd, from_tty); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | static void |
| 570 | thread_apply_command (tidlist, from_tty) |
| 571 | char *tidlist; |
| 572 | int from_tty; |
| 573 | { |
| 574 | char *cmd; |
| 575 | char *p; |
| 576 | struct cleanup *old_chain; |
| 577 | |
| 578 | if (tidlist == NULL || *tidlist == '\000') |
| 579 | error ("Please specify a thread ID list"); |
| 580 | |
| 581 | for (cmd = tidlist; *cmd != '\000' && !isalpha(*cmd); cmd++); |
| 582 | |
| 583 | if (*cmd == '\000') |
| 584 | error ("Please specify a command following the thread ID list"); |
| 585 | |
| 586 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, |
| 587 | (void *) inferior_pid); |
| 588 | |
| 589 | while (tidlist < cmd) |
| 590 | { |
| 591 | struct thread_info *tp; |
| 592 | int start, end; |
| 593 | |
| 594 | start = strtol (tidlist, &p, 10); |
| 595 | if (p == tidlist) |
| 596 | error ("Error parsing %s", tidlist); |
| 597 | tidlist = p; |
| 598 | |
| 599 | while (*tidlist == ' ' || *tidlist == '\t') |
| 600 | tidlist++; |
| 601 | |
| 602 | if (*tidlist == '-') /* Got a range of IDs? */ |
| 603 | { |
| 604 | tidlist++; /* Skip the - */ |
| 605 | end = strtol (tidlist, &p, 10); |
| 606 | if (p == tidlist) |
| 607 | error ("Error parsing %s", tidlist); |
| 608 | tidlist = p; |
| 609 | |
| 610 | while (*tidlist == ' ' || *tidlist == '\t') |
| 611 | tidlist++; |
| 612 | } |
| 613 | else |
| 614 | end = start; |
| 615 | |
| 616 | for (; start <= end; start++) |
| 617 | { |
| 618 | tp = find_thread_id (start); |
| 619 | |
| 620 | if (!tp) |
| 621 | warning ("Unknown thread %d.", start); |
| 622 | else if (!thread_alive (tp)) |
| 623 | warning ("Thread %d has terminated.", start); |
| 624 | else |
| 625 | { |
| 626 | switch_to_thread (tp->pid); |
| 627 | #ifdef HPUXHPPA |
| 628 | printf_filtered ("\nThread %d (%s):\n", tp->num, |
| 629 | target_tid_to_str (inferior_pid)); |
| 630 | #else |
| 631 | printf_filtered ("\nThread %d (%s):\n", tp->num, |
| 632 | target_pid_to_str (inferior_pid)); |
| 633 | #endif |
| 634 | execute_command (cmd, from_tty); |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | /* Switch to the specified thread. Will dispatch off to thread_apply_command |
| 641 | if prefix of arg is `apply'. */ |
| 642 | |
| 643 | static void |
| 644 | thread_command (tidstr, from_tty) |
| 645 | char *tidstr; |
| 646 | int from_tty; |
| 647 | { |
| 648 | int num; |
| 649 | struct thread_info *tp; |
| 650 | |
| 651 | if (!tidstr) |
| 652 | { |
| 653 | /* Don't generate an error, just say which thread is current. */ |
| 654 | if (target_has_stack) |
| 655 | printf_filtered ("[Current thread is %d (%s)]\n", |
| 656 | pid_to_thread_id(inferior_pid), |
| 657 | #if defined(HPUXHPPA) |
| 658 | target_tid_to_str(inferior_pid) |
| 659 | #else |
| 660 | target_pid_to_str(inferior_pid) |
| 661 | #endif |
| 662 | ); |
| 663 | else |
| 664 | error ("No stack."); |
| 665 | return; |
| 666 | } |
| 667 | num = atoi (tidstr); |
| 668 | |
| 669 | tp = find_thread_id (num); |
| 670 | |
| 671 | if (!tp) |
| 672 | error ("Thread ID %d not known. Use the \"info threads\" command to\n\ |
| 673 | see the IDs of currently known threads.", num); |
| 674 | |
| 675 | if (!thread_alive (tp)) |
| 676 | error ("Thread ID %d has terminated.\n", num); |
| 677 | |
| 678 | switch_to_thread (tp->pid); |
| 679 | |
| 680 | if (context_hook) |
| 681 | context_hook (num); |
| 682 | |
| 683 | printf_filtered ("[Switching to thread %d (%s)]\n", |
| 684 | pid_to_thread_id (inferior_pid), |
| 685 | #if defined(HPUXHPPA) |
| 686 | target_tid_to_str (inferior_pid) |
| 687 | #else |
| 688 | target_pid_to_str (inferior_pid) |
| 689 | #endif |
| 690 | ); |
| 691 | print_stack_frame (selected_frame, selected_frame_level, 1); |
| 692 | } |
| 693 | |
| 694 | /* Commands with a prefix of `thread'. */ |
| 695 | struct cmd_list_element *thread_cmd_list = NULL; |
| 696 | |
| 697 | void |
| 698 | _initialize_thread () |
| 699 | { |
| 700 | static struct cmd_list_element *thread_apply_list = NULL; |
| 701 | extern struct cmd_list_element *cmdlist; |
| 702 | |
| 703 | add_info ("threads", info_threads_command, |
| 704 | "IDs of currently known threads."); |
| 705 | |
| 706 | add_prefix_cmd ("thread", class_run, thread_command, |
| 707 | "Use this command to switch between threads.\n\ |
| 708 | The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1, |
| 709 | &cmdlist); |
| 710 | |
| 711 | add_prefix_cmd ("apply", class_run, thread_apply_command, |
| 712 | "Apply a command to a list of threads.", |
| 713 | &thread_apply_list, "apply ", 1, &thread_cmd_list); |
| 714 | |
| 715 | add_cmd ("all", class_run, thread_apply_all_command, |
| 716 | "Apply a command to all threads.", |
| 717 | &thread_apply_list); |
| 718 | |
| 719 | if (!xdb_commands) |
| 720 | add_com_alias ("t", "thread", class_run, 1); |
| 721 | } |