/* Multi-process/thread control for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1993, 1998, 1999, 2000
+
+ Copyright 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
- Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbthread.h"
#include "command.h"
#include "gdbcmd.h"
+#include "regcache.h"
+#include "gdb.h"
#include <ctype.h>
#include <sys/types.h>
#include <signal.h>
-#ifdef UI_OUT
#include "ui-out.h"
-#endif
/*#include "lynxos-core.h" */
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 (int);
-static void switch_to_thread (int pid);
+static void restore_current_thread (ptid_t);
+static void switch_to_thread (ptid_t ptid);
static void prune_threads (void);
+void
+delete_step_resume_breakpoint (void *arg)
+{
+ struct breakpoint **breakpointp = (struct breakpoint **) arg;
+ struct thread_info *tp;
+
+ 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;
+
+ *breakpointp = NULL;
+ }
+}
+
static void
free_thread (struct thread_info *tp)
{
/* 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)
- free (tp->private);
+ xfree (tp->private);
- free (tp);
+ xfree (tp);
}
void
-init_thread_list ()
+init_thread_list (void)
{
struct thread_info *tp, *tpnext;
so that back_ends can initialize their private data. */
struct thread_info *
-add_thread (pid)
- int pid;
+add_thread (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;
- tp->private = NULL;
thread_list = tp;
return tp;
}
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)
}
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 'pid'. */
+/* Find a thread_info by matching PTID. */
struct thread_info *
-find_thread_pid (pid)
- int pid;
+find_thread_pid (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;
return NULL;
*/
struct thread_info *
-iterate_over_threads (callback, data)
- int (*callback) ();
- void *data;
+iterate_over_threads (int (*callback) (struct thread_info *, void *),
+ void *data)
{
struct thread_info *tp;
}
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 */
}
-#ifdef UI_OUT
+
/* 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 (void *arg)
+do_captured_list_thread_ids (struct ui_out *uiout,
+ void *arg)
{
struct thread_info *tp;
int num = 0;
- ui_out_list_begin (uiout, "thread-ids");
+ ui_out_tuple_begin (uiout, "thread-ids");
for (tp = thread_list; tp; tp = tp->next)
{
ui_out_field_int (uiout, "thread-id", tp->num);
}
- ui_out_list_end (uiout);
+ ui_out_tuple_end (uiout);
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 (/* output object */)
+gdb_list_thread_ids (struct ui_out *uiout)
{
- return catch_errors (do_captured_list_thread_ids, NULL,
- NULL, RETURN_MASK_ALL);
+ return catch_exceptions (uiout, do_captured_list_thread_ids, NULL,
+ NULL, RETURN_MASK_ALL);
}
-#endif
/* 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;
+load_infrun_state (ptid_t ptid,
+ 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,
+ int *current_line,
+ struct symtab **current_symtab,
+ CORE_ADDR *step_sp)
{
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;
+ *through_sigtramp_breakpoint = tp->through_sigtramp_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;
+ *current_line = tp->current_line;
+ *current_symtab = tp->current_symtab;
+ *step_sp = tp->step_sp;
}
/* 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;
+save_infrun_state (ptid_t ptid,
+ 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,
+ int current_line,
+ struct symtab *current_symtab,
+ CORE_ADDR step_sp)
{
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->through_sigtramp_breakpoint = through_sigtramp_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->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;
+ tp->step_sp = step_sp;
}
/* 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, *next;
{
next = tp->next;
if (!thread_alive (tp))
- delete_thread (tp->pid);
+ delete_thread (tp->ptid);
}
}
*/
static void
-info_threads_command (arg, from_tty)
- char *arg;
- int from_tty;
+info_threads_command (char *arg, int from_tty)
{
struct thread_info *tp;
- int current_pid;
+ ptid_t current_ptid;
struct frame_info *cur_frame;
int saved_frame_level = selected_frame_level;
int counter;
prune_threads ();
target_find_new_threads ();
- current_pid = inferior_pid;
+ current_ptid = inferior_ptid;
for (tp = thread_list; tp; tp = tp->next)
{
- if (tp->pid == current_pid)
+ if (ptid_equal (tp->ptid, current_ptid))
printf_filtered ("* ");
else
printf_filtered (" ");
#ifdef HPUXHPPA
- printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->pid));
+ printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->ptid));
#else
- printf_filtered ("%d %s", tp->num, target_pid_to_str (tp->pid));
+ printf_filtered ("%d %s", tp->num, target_pid_to_str (tp->ptid));
#endif
extra_info = target_extra_thread_info (tp);
printf_filtered (" (%s)", extra_info);
puts_filtered (" ");
- switch_to_thread (tp->pid);
+ switch_to_thread (tp->ptid);
if (selected_frame)
print_only_stack_frame (selected_frame, -1, 0);
else
printf_filtered ("[No stack.]\n");
}
- switch_to_thread (current_pid);
+ switch_to_thread (current_ptid);
/* Code below copied from "up_silently_base" in "stack.c".
* It restores the frame set by the user before the "info threads"
/* Switch from one thread to another. */
static void
-switch_to_thread (pid)
- int pid;
+switch_to_thread (ptid_t ptid)
{
- if (pid == inferior_pid)
+ if (ptid_equal (ptid, inferior_ptid))
return;
- inferior_pid = pid;
+ inferior_ptid = ptid;
flush_cached_frames ();
registers_changed ();
stop_pc = read_pc ();
}
static void
-restore_current_thread (pid)
- int pid;
+restore_current_thread (ptid_t ptid)
{
- if (pid != inferior_pid)
+ if (! ptid_equal (ptid, inferior_ptid))
{
- switch_to_thread (pid);
+ switch_to_thread (ptid);
print_stack_frame (get_current_frame (), 0, -1);
}
}
struct current_thread_cleanup
{
- int inferior_pid;
+ ptid_t inferior_ptid;
};
static void
do_restore_current_thread_cleanup (void *arg)
{
struct current_thread_cleanup *old = arg;
- restore_current_thread (old->inferior_pid);
- free (old);
+ restore_current_thread (old->inferior_ptid);
+ xfree (old);
}
static struct cleanup *
-make_cleanup_restore_current_thread (int inferior_pid)
+make_cleanup_restore_current_thread (ptid_t inferior_ptid)
{
struct current_thread_cleanup *old
= xmalloc (sizeof (struct current_thread_cleanup));
- old->inferior_pid = inferior_pid;
+ old->inferior_ptid = inferior_ptid;
return make_cleanup (do_restore_current_thread_cleanup, old);
}
*/
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;
if (cmd == NULL || *cmd == '\000')
error ("Please specify a command following the thread ID list");
- old_chain = make_cleanup_restore_current_thread (inferior_pid);
+ old_chain = make_cleanup_restore_current_thread (inferior_ptid);
+ /* 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);
+ switch_to_thread (tp->ptid);
#ifdef HPUXHPPA
printf_filtered ("\nThread %d (%s):\n",
tp->num,
- target_tid_to_str (inferior_pid));
+ target_tid_to_str (inferior_ptid));
#else
printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_pid));
+ target_pid_to_str (inferior_ptid));
#endif
execute_command (cmd, from_tty);
+ strcpy (cmd, saved_cmd); /* Restore exact command used previously */
}
+ do_cleanups (saved_cmd_cleanup_chain);
do_cleanups (old_chain);
}
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;
if (tidlist == NULL || *tidlist == '\000')
error ("Please specify a thread ID list");
if (*cmd == '\000')
error ("Please specify a command following the thread ID list");
- old_chain = make_cleanup_restore_current_thread (inferior_pid);
+ old_chain = make_cleanup_restore_current_thread (inferior_ptid);
+ /* 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;
warning ("Thread %d has terminated.", start);
else
{
- switch_to_thread (tp->pid);
+ switch_to_thread (tp->ptid);
#ifdef HPUXHPPA
printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_tid_to_str (inferior_pid));
+ target_tid_to_str (inferior_ptid));
#else
printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_pid));
+ target_pid_to_str (inferior_ptid));
#endif
execute_command (cmd, from_tty);
+ strcpy (cmd, saved_cmd); /* Restore exact command used previously */
}
}
}
+ do_cleanups (saved_cmd_cleanup_chain);
do_cleanups (old_chain);
}
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)
{
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),
+ pid_to_thread_id (inferior_ptid),
#if defined(HPUXHPPA)
- target_tid_to_str (inferior_pid)
+ target_tid_to_str (inferior_ptid)
#else
- target_pid_to_str (inferior_pid)
+ target_pid_to_str (inferior_ptid)
#endif
);
else
return;
}
- gdb_thread_select (tidstr);
+ gdb_thread_select (uiout, tidstr);
}
static int
-do_captured_thread_select (void *tidstr)
+do_captured_thread_select (struct ui_out *uiout,
+ void *tidstr)
{
int num;
struct thread_info *tp;
- num = atoi ((char *)tidstr);
+ num = value_as_long (parse_and_eval (tidstr));
tp = find_thread_id (num);
-#ifdef UI_OUT
if (!tp)
error ("Thread ID %d not known.", num);
-#else
- if (!tp)
- error ("Thread ID %d not known. Use the \"info threads\" command to\n\
-see the IDs of currently known threads.", num);
-#endif
if (!thread_alive (tp))
error ("Thread ID %d has terminated.\n", num);
- switch_to_thread (tp->pid);
+ switch_to_thread (tp->ptid);
-#ifdef UI_OUT
ui_out_text (uiout, "[Switching to thread ");
- ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_pid));
+ ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid));
ui_out_text (uiout, " (");
#if defined(HPUXHPPA)
- ui_out_text (uiout, target_tid_to_str (inferior_pid));
+ ui_out_text (uiout, target_tid_to_str (inferior_ptid));
#else
- ui_out_text (uiout, target_pid_to_str (inferior_pid));
+ ui_out_text (uiout, target_pid_to_str (inferior_ptid));
#endif
ui_out_text (uiout, ")]");
-#else /* UI_OUT */
- 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
- );
-#endif /* UI_OUT */
print_stack_frame (selected_frame, selected_frame_level, 1);
return GDB_RC_OK;
}
enum gdb_rc
-gdb_thread_select (char *tidstr)
+gdb_thread_select (struct ui_out *uiout,
+ char *tidstr)
{
- return catch_errors (do_captured_thread_select, tidstr,
- NULL, RETURN_MASK_ALL);
+ return catch_exceptions (uiout, do_captured_thread_select, tidstr,
+ NULL, RETURN_MASK_ALL);
}
/* 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;
projects / deliverable / binutils-gdb.git / blobdiff