Remove global continuations in favour of a per-thread

	continuations.

	* gdbthread.h (struct thread_info): Add comments around
	continuations and intermediate_continuations.
	(save_infrun_state, load_infrun_state): Delete continuations and
	intermediate_continuations arguments.
	* infrun.c (fetch_inferior_event): Only call normal_stop if
	stop_soon is NO_STOP_QUIETLY.
	(context_switch): Don't context-switch the continuations.
	* thread.c (clear_thread_inferior_resources): Discard all
	continuations of the thread we're clearing.
	(save_infrun_state, load_infrun_state): Delete continuations and
	intermediate_continuations arguments, and the code referencing
	them.
	* utils.c: Include "gdbthread.h".
	(cmd_continuation, intermediate_continuation): Delete.
	(add_continuation): Add thread_info* argument.  Install the
	continuation on it.
	(restore_thread_cleanup): New.
	(do_all_continuations_ptid, do_all_continuations_thread_callback):
	New.
	(do_all_continuations): Reimplement.
	(discard_all_continuations_thread_callback,
	discard_all_continuations_thread): New.
	(discard_all_continuations): Reimplement.
	(add_intermediate_continuation): Add thread_info* argument.
	Install the continuation on it.
	(do_all_intermediate_continuations_thread_callback)
	(do_all_intermediate_continuations_thread): New.
	(do_all_intermediate_continuations): Reimplement.
	(discard_all_intermediate_continuations_thread_callback): New.
	(discard_all_intermediate_continuations_thread): New.
	(discard_all_intermediate_continuations): Reimplement.

	* breakpoint.c (until_break_command): Install the continuation on
	the current thread.

	* defs.h (cmd_continuation, intermediate_continuation): Delete.
	(struct thread_info): Forward declare.
	(add_continuation, add_intermediate_continuation): Add
	thread_info* argument.
	(do_all_continuations_thread, discard_all_continuations_thread)
	(do_all_intermediate_continuations_thread)
	(discard_all_intermediate_continuations_thread): Declare.
	* inf-loop.c (inferior_event_handler): In non-stop only run
	continuations on the thread that stopped.  In all-stop, run
	continuations on all threads.
	* infcmd.c (step_once, finish_command): Adjust.

1 files changed, 5 insertions, 4 deletions

diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index a4c6c94..8bcfd63 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -947,7 +947,7 @@ which has no line number information.\n"), name);
       if (skip_subroutines)
 	tp->step_over_calls = STEP_OVER_ALL;
 
-      inferior_thread ()->step_multi = (count > 1);
+      tp->step_multi = (count > 1);
       proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
 
       args = xmalloc (sizeof (*args));
@@ -955,7 +955,7 @@ which has no line number information.\n"), name);
       args->single_inst = single_inst;
       args->count = count;
       args->thread = thread;
-      add_intermediate_continuation (step_1_continuation, args, xfree);
+      add_intermediate_continuation (tp, step_1_continuation, args, xfree);
     }
 }
 
@@ -1440,7 +1440,7 @@ finish_command (char *arg, int from_tty)
 
   cargs->breakpoint = breakpoint;
   cargs->function = function;
-  add_continuation (finish_command_continuation, cargs,
+  add_continuation (tp, finish_command_continuation, cargs,
 		    finish_command_continuation_free_arg);
 
   discard_cleanups (old_chain);
@@ -2103,7 +2103,8 @@ attach_command (char *args, int from_tty)
 	  a->args = xstrdup (args);
 	  a->from_tty = from_tty;
 	  a->async_exec = async_exec;
-	  add_continuation (attach_command_continuation, a,
+	  add_continuation (inferior_thread (),
+			    attach_command_continuation, a,
 			    attach_command_continuation_free_args);
 	  return;
 	}