gdbserver: replace direct assignments to current_thread

Replace the direct assignments to current_thread with
switch_to_thread.  Use scoped_restore_current_thread when appropriate.
There is one instance remaining in linux-low.cc's wait_for_sigstop.
This will be handled in a separate patch.

Regression-tested on X86-64 Linux using the native-gdbserver and
native-extended-gdbserver board files.

1 files changed, 2 insertions, 6 deletions

diff --git a/gdbserver/tracepoint.cc b/gdbserver/tracepoint.cc
index c01973b..f176ab2 100644
--- a/gdbserver/tracepoint.cc
+++ b/gdbserver/tracepoint.cc
@@ -3975,18 +3975,14 @@ gdb_agent_about_to_close (int pid)
 
   if (!maybe_write_ipa_not_loaded (buf))
     {
-      struct thread_info *saved_thread;
-
-      saved_thread = current_thread;
+      scoped_restore_current_thread restore_thread;
 
       /* Find any thread which belongs to process PID.  */
-      current_thread = find_any_thread_of_pid (pid);
+      switch_to_thread (find_any_thread_of_pid (pid));
 
       strcpy (buf, "close");
 
       run_inferior_command (buf, strlen (buf) + 1);
-
-      current_thread = saved_thread;
     }
 }