Centralize thread ID printing

Add a new function to print a thread ID, in the style of paddress,
plongest, etc. and adjust all CLI-reachable paths to use it.

This gives us a single place to tweak to print inferior-qualified
thread IDs later:

 - [Switching to thread 1 (Thread 0x7ffff7fc2740 (LWP 8155))]
 + [Switching to thread 1.1 (Thread 0x7ffff7fc2740 (LWP 8155))]

etc., though for now, this has no user-visible change.

No regressions on x86_64 Fedora 20.

gdb/ChangeLog:
2016-01-13  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (remove_threaded_breakpoints)
	(print_one_breakpoint_location): Use print_thread_id.
	* btrace.c (btrace_enable, btrace_disable, btrace_teardown)
	(btrace_fetch, btrace_clear): Use print_thread_id.
	* common/print-utils.c (CELLSIZE): Delete.
	(get_cell): Rename to ...
	(get_print_cell): ... this and made extern.  Adjust call callers.
	Adjust to use PRINT_CELL_SIZE.
	* common/print-utils.h (get_print_cell): Declare.
	(PRINT_CELL_SIZE): New.
	* gdbthread.h (print_thread_id): Declare.
	* infcmd.c (signal_command): Use print_thread_id.
	* inferior.c (print_inferior): Use print_thread_id.
	* infrun.c (handle_signal_stop)
	(insert_exception_resume_breakpoint)
	(insert_exception_resume_from_probe)
	(print_signal_received_reason): Use print_thread_id.
	* record-btrace.c (record_btrace_info)
	(record_btrace_resume_thread, record_btrace_cancel_resume)
	(record_btrace_step_thread, record_btrace_wait): Use
	print_thread_id.
	* thread.c (thread_apply_all_command): Use print_thread_id.
	(print_thread_id): New function.
	(thread_apply_command): Use print_thread_id.
	(thread_command, thread_find_command, do_captured_thread_select):
	Use print_thread_id.

1 files changed, 8 insertions, 6 deletions

diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 6ec981de3f..9fee3df862 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -438,8 +438,8 @@ record_btrace_info (struct target_ops *self)
     }
 
   printf_unfiltered (_("Recorded %u instructions in %u functions (%u gaps) "
-		       "for thread %d (%s).\n"), insns, calls, gaps,
-		     tp->num, target_pid_to_str (tp->ptid));
+		       "for thread %s (%s).\n"), insns, calls, gaps,
+		     print_thread_id (tp), target_pid_to_str (tp->ptid));
 
   if (btrace_is_replaying (tp))
     printf_unfiltered (_("Replay in progress.  At instruction %u.\n"),
@@ -1864,7 +1864,7 @@ record_btrace_resume_thread (struct thread_info *tp,
 {
   struct btrace_thread_info *btinfo;
 
-  DEBUG ("resuming thread %d (%s): %x (%s)", tp->num,
+  DEBUG ("resuming thread %s (%s): %x (%s)", print_thread_id (tp),
 	 target_pid_to_str (tp->ptid), flag, btrace_thread_flag_to_str (flag));
 
   btinfo = &tp->btrace;
@@ -2131,7 +2131,8 @@ record_btrace_cancel_resume (struct thread_info *tp)
   if (flags == 0)
     return;
 
-  DEBUG ("cancel resume thread %d (%s): %x (%s)", tp->num,
+  DEBUG ("cancel resume thread %s (%s): %x (%s)",
+	 print_thread_id (tp),
 	 target_pid_to_str (tp->ptid), flags,
 	 btrace_thread_flag_to_str (flags));
 
@@ -2354,7 +2355,7 @@ record_btrace_step_thread (struct thread_info *tp)
   flags = btinfo->flags & (BTHR_MOVE | BTHR_STOP);
   btinfo->flags &= ~(BTHR_MOVE | BTHR_STOP);
 
-  DEBUG ("stepping thread %d (%s): %x (%s)", tp->num,
+  DEBUG ("stepping thread %s (%s): %x (%s)", print_thread_id (tp),
 	 target_pid_to_str (tp->ptid), flags,
 	 btrace_thread_flag_to_str (flags));
 
@@ -2563,7 +2564,8 @@ record_btrace_wait (struct target_ops *ops, ptid_t ptid,
   /* We moved the replay position but did not update registers.  */
   registers_changed_ptid (eventing->ptid);
 
-  DEBUG ("wait ended by thread %d (%s): %s", eventing->num,
+  DEBUG ("wait ended by thread %s (%s): %s",
+	 print_thread_id (eventing),
 	 target_pid_to_str (eventing->ptid),
 	 target_waitstatus_to_string (status));