1 files changed, 91 insertions, 131 deletions

diff --git a/gdb/infrun.c b/gdb/infrun.c
index 81f45be..46a8985 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -1082,7 +1082,6 @@ show_follow_exec_mode_string (struct ui_file *file, int from_tty,
 static void
 follow_exec (ptid_t ptid, char *exec_file_target)
 {
-  struct thread_info *th, *tmp;
   struct inferior *inf = current_inferior ();
   int pid = ptid.pid ();
   ptid_t process_ptid;
@@ -1129,7 +1128,7 @@ follow_exec (ptid_t ptid, char *exec_file_target)
      them.  Deleting them now rather than at the next user-visible
      stop provides a nicer sequence of events for user and MI
      notifications.  */
-  ALL_THREADS_SAFE (th, tmp)
+  for (thread_info *th : all_threads_safe ())
     if (th->ptid.pid () == pid && th->ptid != ptid)
       delete_thread (th);
 
@@ -1137,7 +1136,7 @@ follow_exec (ptid_t ptid, char *exec_file_target)
      leader/event thread.  E.g., if there was any step-resume
      breakpoint or similar, it's gone now.  We cannot truly
      step-to-next statement through an exec().  */
-  th = inferior_thread ();
+  thread_info *th = inferior_thread ();
   th->control.step_resume_breakpoint = NULL;
   th->control.exception_resume_breakpoint = NULL;
   th->control.single_step_breakpoints = NULL;
@@ -2851,21 +2850,14 @@ clear_proceed_status (int step)
 				     execution_direction))
     target_record_stop_replaying ();
 
-  if (!non_stop)
+  if (!non_stop && inferior_ptid != null_ptid)
     {
-      struct thread_info *tp;
-      ptid_t resume_ptid;
-
-      resume_ptid = user_visible_resume_ptid (step);
+      ptid_t resume_ptid = user_visible_resume_ptid (step);
 
       /* In all-stop mode, delete the per-thread status of all threads
 	 we're about to resume, implicitly and explicitly.  */
-      ALL_NON_EXITED_THREADS (tp)
-        {
-	  if (!tp->ptid.matches (resume_ptid))
-	    continue;
-	  clear_proceed_status_thread (tp);
-	}
+      for (thread_info *tp : all_non_exited_threads (resume_ptid))
+	clear_proceed_status_thread (tp);
     }
 
   if (inferior_ptid != null_ptid)
@@ -2954,7 +2946,6 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
 {
   struct regcache *regcache;
   struct gdbarch *gdbarch;
-  struct thread_info *tp;
   CORE_ADDR pc;
   ptid_t resume_ptid;
   struct execution_control_state ecss;
@@ -2981,16 +2972,16 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
   const address_space *aspace = regcache->aspace ();
 
   pc = regcache_read_pc (regcache);
-  tp = inferior_thread ();
+  thread_info *cur_thr = inferior_thread ();
 
   /* Fill in with reasonable starting values.  */
-  init_thread_stepping_state (tp);
+  init_thread_stepping_state (cur_thr);
 
-  gdb_assert (!thread_is_in_step_over_chain (tp));
+  gdb_assert (!thread_is_in_step_over_chain (cur_thr));
 
   if (addr == (CORE_ADDR) -1)
     {
-      if (pc == tp->suspend.stop_pc
+      if (pc == cur_thr->suspend.stop_pc
 	  && breakpoint_here_p (aspace, pc) == ordinary_breakpoint_here
 	  && execution_direction != EXEC_REVERSE)
 	/* There is a breakpoint at the address we will resume at,
@@ -3001,13 +2992,13 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
 	   Note, we don't do this in reverse, because we won't
 	   actually be executing the breakpoint insn anyway.
 	   We'll be (un-)executing the previous instruction.  */
-	tp->stepping_over_breakpoint = 1;
+	cur_thr->stepping_over_breakpoint = 1;
       else if (gdbarch_single_step_through_delay_p (gdbarch)
 	       && gdbarch_single_step_through_delay (gdbarch,
 						     get_current_frame ()))
 	/* We stepped onto an instruction that needs to be stepped
 	   again before re-inserting the breakpoint, do so.  */
-	tp->stepping_over_breakpoint = 1;
+	cur_thr->stepping_over_breakpoint = 1;
     }
   else
     {
@@ -3015,9 +3006,9 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
     }
 
   if (siggnal != GDB_SIGNAL_DEFAULT)
-    tp->suspend.stop_signal = siggnal;
+    cur_thr->suspend.stop_signal = siggnal;
 
-  resume_ptid = user_visible_resume_ptid (tp->control.stepping_command);
+  resume_ptid = user_visible_resume_ptid (cur_thr->control.stepping_command);
 
   /* If an exception is thrown from this point on, make sure to
      propagate GDB's knowledge of the executing state to the
@@ -3030,7 +3021,7 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
      threads in RESUME_PTID are now running.  Unless we're calling an
      inferior function, as in that case we pretend the inferior
      doesn't run at all.  */
-  if (!tp->control.in_infcall)
+  if (!cur_thr->control.in_infcall)
    set_running (resume_ptid, 1);
 
   if (debug_infrun)
@@ -3064,19 +3055,13 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
 
   /* If scheduler locking applies, we can avoid iterating over all
      threads.  */
-  if (!non_stop && !schedlock_applies (tp))
+  if (!non_stop && !schedlock_applies (cur_thr))
     {
-      struct thread_info *current = tp;
-
-      ALL_NON_EXITED_THREADS (tp)
-        {
+      for (thread_info *tp : all_non_exited_threads (resume_ptid))
+	{
 	  /* Ignore the current thread here.  It's handled
 	     afterwards.  */
-	  if (tp == current)
-	    continue;
-
-	  /* Ignore threads of processes we're not resuming.  */
-	  if (!tp->ptid.matches (resume_ptid))
+	  if (tp == cur_thr)
 	    continue;
 
 	  if (!thread_still_needs_step_over (tp))
@@ -3091,21 +3076,19 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
 
 	  thread_step_over_chain_enqueue (tp);
 	}
-
-      tp = current;
     }
 
   /* Enqueue the current thread last, so that we move all other
      threads over their breakpoints first.  */
-  if (tp->stepping_over_breakpoint)
-    thread_step_over_chain_enqueue (tp);
+  if (cur_thr->stepping_over_breakpoint)
+    thread_step_over_chain_enqueue (cur_thr);
 
   /* If the thread isn't started, we'll still need to set its prev_pc,
      so that switch_back_to_stepped_thread knows the thread hasn't
      advanced.  Must do this before resuming any thread, as in
      all-stop/remote, once we resume we can't send any other packet
      until the target stops again.  */
-  tp->prev_pc = regcache_read_pc (regcache);
+  cur_thr->prev_pc = regcache_read_pc (regcache);
 
   {
     scoped_restore save_defer_tc = make_scoped_defer_target_commit_resume ();
@@ -3127,12 +3110,8 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
       {
 	/* In all-stop, but the target is always in non-stop mode.
 	   Start all other threads that are implicitly resumed too.  */
-	ALL_NON_EXITED_THREADS (tp)
+      for (thread_info *tp : all_non_exited_threads (resume_ptid))
         {
-	  /* Ignore threads of processes we're not resuming.  */
-	  if (!tp->ptid.matches (resume_ptid))
-	    continue;
-
 	  if (tp->resumed)
 	    {
 	      if (debug_infrun)
@@ -3164,11 +3143,11 @@ proceed (CORE_ADDR addr, enum gdb_signal siggnal)
 	    error (_("Command aborted."));
 	}
       }
-    else if (!tp->resumed && !thread_is_in_step_over_chain (tp))
+    else if (!cur_thr->resumed && !thread_is_in_step_over_chain (cur_thr))
       {
 	/* The thread wasn't started, and isn't queued, run it now.  */
-	reset_ecs (ecs, tp);
-	switch_to_thread (tp);
+	reset_ecs (ecs, cur_thr);
+	switch_to_thread (cur_thr);
 	keep_going_pass_signal (ecs);
 	if (!ecs->wait_some_more)
 	  error (_("Command aborted."));
@@ -3235,9 +3214,6 @@ init_wait_for_inferior (void)
   target_last_wait_ptid = minus_one_ptid;
 
   previous_inferior_ptid = inferior_ptid;
-
-  /* Discard any skipped inlined frames.  */
-  clear_inline_frame_state (minus_one_ptid);
 }
 
 
@@ -3265,53 +3241,50 @@ static int switch_back_to_stepped_thread (struct execution_control_state *ecs);
 static void
 infrun_thread_stop_requested (ptid_t ptid)
 {
-  struct thread_info *tp;
-
   /* PTID was requested to stop.  If the thread was already stopped,
      but the user/frontend doesn't know about that yet (e.g., the
      thread had been temporarily paused for some step-over), set up
      for reporting the stop now.  */
-  ALL_NON_EXITED_THREADS (tp)
-    if (tp->ptid.matches (ptid))
-      {
-	if (tp->state != THREAD_RUNNING)
-	  continue;
-	if (tp->executing)
-	  continue;
+  for (thread_info *tp : all_threads (ptid))
+    {
+      if (tp->state != THREAD_RUNNING)
+	continue;
+      if (tp->executing)
+	continue;
 
-	/* Remove matching threads from the step-over queue, so
-	   start_step_over doesn't try to resume them
-	   automatically.  */
-	if (thread_is_in_step_over_chain (tp))
-	  thread_step_over_chain_remove (tp);
-
-	/* If the thread is stopped, but the user/frontend doesn't
-	   know about that yet, queue a pending event, as if the
-	   thread had just stopped now.  Unless the thread already had
-	   a pending event.  */
-	if (!tp->suspend.waitstatus_pending_p)
-	  {
-	    tp->suspend.waitstatus_pending_p = 1;
-	    tp->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED;
-	    tp->suspend.waitstatus.value.sig = GDB_SIGNAL_0;
-	  }
+      /* Remove matching threads from the step-over queue, so
+	 start_step_over doesn't try to resume them
+	 automatically.  */
+      if (thread_is_in_step_over_chain (tp))
+	thread_step_over_chain_remove (tp);
 
-	/* Clear the inline-frame state, since we're re-processing the
-	   stop.  */
-	clear_inline_frame_state (tp->ptid);
+      /* If the thread is stopped, but the user/frontend doesn't
+	 know about that yet, queue a pending event, as if the
+	 thread had just stopped now.  Unless the thread already had
+	 a pending event.  */
+      if (!tp->suspend.waitstatus_pending_p)
+	{
+	  tp->suspend.waitstatus_pending_p = 1;
+	  tp->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED;
+	  tp->suspend.waitstatus.value.sig = GDB_SIGNAL_0;
+	}
 
-	/* If this thread was paused because some other thread was
-	   doing an inline-step over, let that finish first.  Once
-	   that happens, we'll restart all threads and consume pending
-	   stop events then.  */
-	if (step_over_info_valid_p ())
-	  continue;
+      /* Clear the inline-frame state, since we're re-processing the
+	 stop.  */
+      clear_inline_frame_state (tp->ptid);
 
-	/* Otherwise we can process the (new) pending event now.  Set
-	   it so this pending event is considered by
-	   do_target_wait.  */
-	tp->resumed = 1;
-      }
+      /* If this thread was paused because some other thread was
+	 doing an inline-step over, let that finish first.  Once
+	 that happens, we'll restart all threads and consume pending
+	 stop events then.  */
+      if (step_over_info_valid_p ())
+	continue;
+
+      /* Otherwise we can process the (new) pending event now.  Set
+	 it so this pending event is considered by
+	 do_target_wait.  */
+      tp->resumed = 1;
+    }
 }
 
 static void
@@ -3352,13 +3325,9 @@ for_each_just_stopped_thread (for_each_just_stopped_thread_callback_func func)
     }
   else
     {
-      struct thread_info *tp;
-
       /* In all-stop mode, all threads have stopped.  */
-      ALL_NON_EXITED_THREADS (tp)
-        {
-	  func (tp);
-	}
+      for (thread_info *tp : all_non_exited_threads ())
+	func (tp);
     }
 }
 
@@ -3427,24 +3396,26 @@ print_target_wait_results (ptid_t waiton_ptid, ptid_t result_ptid,
 static struct thread_info *
 random_pending_event_thread (ptid_t waiton_ptid)
 {
-  struct thread_info *event_tp;
   int num_events = 0;
-  int random_selector;
+
+  auto has_event = [] (thread_info *tp)
+    {
+      return (tp->resumed
+	      && tp->suspend.waitstatus_pending_p);
+    };
 
   /* First see how many events we have.  Count only resumed threads
      that have an event pending.  */
-  ALL_NON_EXITED_THREADS (event_tp)
-    if (event_tp->ptid.matches (waiton_ptid)
-	&& event_tp->resumed
-	&& event_tp->suspend.waitstatus_pending_p)
+  for (thread_info *tp : all_non_exited_threads (waiton_ptid))
+    if (has_event (tp))
       num_events++;
 
   if (num_events == 0)
     return NULL;
 
   /* Now randomly pick a thread out of those that have had events.  */
-  random_selector = (int)
-    ((num_events * (double) rand ()) / (RAND_MAX + 1.0));
+  int random_selector = (int) ((num_events * (double) rand ())
+			       / (RAND_MAX + 1.0));
 
   if (debug_infrun && num_events > 1)
     fprintf_unfiltered (gdb_stdlog,
@@ -3452,14 +3423,12 @@ random_pending_event_thread (ptid_t waiton_ptid)
 			num_events, random_selector);
 
   /* Select the Nth thread that has had an event.  */
-  ALL_NON_EXITED_THREADS (event_tp)
-    if (event_tp->ptid.matches (waiton_ptid)
-	&& event_tp->resumed
-	&& event_tp->suspend.waitstatus_pending_p)
+  for (thread_info *tp : all_non_exited_threads (waiton_ptid))
+    if (has_event (tp))
       if (random_selector-- == 0)
-	break;
+	return tp;
 
-  return event_tp;
+  gdb_assert_not_reached ("event thread not found");
 }
 
 /* Wrapper for target_wait that first checks whether threads have
@@ -3755,14 +3724,14 @@ reinstall_readline_callback_handler_cleanup (void *arg)
 static void
 clean_up_just_stopped_threads_fsms (struct execution_control_state *ecs)
 {
-  struct thread_info *thr = ecs->event_thread;
-
-  if (thr != NULL && thr->thread_fsm != NULL)
-    thread_fsm_clean_up (thr->thread_fsm, thr);
+  if (ecs->event_thread != NULL
+      && ecs->event_thread->thread_fsm != NULL)
+    thread_fsm_clean_up (ecs->event_thread->thread_fsm,
+			 ecs->event_thread);
 
   if (!non_stop)
     {
-      ALL_NON_EXITED_THREADS (thr)
+      for (thread_info *thr : all_non_exited_threads ())
         {
 	  if (thr->thread_fsm == NULL)
 	    continue;
@@ -4461,13 +4430,12 @@ stop_all_threads (void)
 	  ptid_t event_ptid;
 	  struct target_waitstatus ws;
 	  int need_wait = 0;
-	  struct thread_info *t;
 
 	  update_thread_list ();
 
 	  /* Go through all threads looking for threads that we need
 	     to tell the target to stop.  */
-	  ALL_NON_EXITED_THREADS (t)
+	  for (thread_info *t : all_non_exited_threads ())
 	    {
 	      if (t->executing)
 		{
@@ -4539,9 +4507,7 @@ stop_all_threads (void)
 	    }
 	  else
 	    {
-	      inferior *inf;
-
-	      t = find_thread_ptid (event_ptid);
+	      thread_info *t = find_thread_ptid (event_ptid);
 	      if (t == NULL)
 		t = add_thread (event_ptid);
 
@@ -4552,7 +4518,7 @@ stop_all_threads (void)
 
 	      /* This may be the first time we see the inferior report
 		 a stop.  */
-	      inf = find_inferior_ptid (event_ptid);
+	      inferior *inf = find_inferior_ptid (event_ptid);
 	      if (inf->needs_setup)
 		{
 		  switch_to_thread_no_regs (t);
@@ -4642,9 +4608,6 @@ stop_all_threads (void)
 static int
 handle_no_resumed (struct execution_control_state *ecs)
 {
-  struct inferior *inf;
-  struct thread_info *thread;
-
   if (target_can_async_p ())
     {
       struct ui *ui;
@@ -4707,7 +4670,7 @@ handle_no_resumed (struct execution_control_state *ecs)
      the synchronous command show "no unwaited-for " to the user.  */
   update_thread_list ();
 
-  ALL_NON_EXITED_THREADS (thread)
+  for (thread_info *thread : all_non_exited_threads ())
     {
       if (thread->executing
 	  || thread->suspend.waitstatus_pending_p)
@@ -4727,12 +4690,12 @@ handle_no_resumed (struct execution_control_state *ecs)
      process exited meanwhile (thus updating the thread list results
      in an empty thread list).  In this case we know we'll be getting
      a process exit event shortly.  */
-  ALL_INFERIORS (inf)
+  for (inferior *inf : all_inferiors ())
     {
       if (inf->pid == 0)
 	continue;
 
-      thread = any_live_thread_of_inferior (inf);
+      thread_info *thread = any_live_thread_of_inferior (inf);
       if (thread == NULL)
 	{
 	  if (debug_infrun)
@@ -5383,12 +5346,10 @@ handle_inferior_event (struct execution_control_state *ecs)
 static void
 restart_threads (struct thread_info *event_thread)
 {
-  struct thread_info *tp;
-
   /* In case the instruction just stepped spawned a new thread.  */
   update_thread_list ();
 
-  ALL_NON_EXITED_THREADS (tp)
+  for (thread_info *tp : all_non_exited_threads ())
     {
       if (tp == event_thread)
 	{
@@ -6996,7 +6957,6 @@ switch_back_to_stepped_thread (struct execution_control_state *ecs)
 {
   if (!target_is_non_stop_p ())
     {
-      struct thread_info *tp;
       struct thread_info *stepping_thread;
 
       /* If any thread is blocked on some internal breakpoint, and we
@@ -7083,7 +7043,7 @@ switch_back_to_stepped_thread (struct execution_control_state *ecs)
       /* Look for the stepping/nexting thread.  */
       stepping_thread = NULL;
 
-      ALL_NON_EXITED_THREADS (tp)
+      for (thread_info *tp : all_non_exited_threads ())
         {
 	  /* Ignore threads of processes the caller is not
 	     resuming.  */