gdbserver: Remove duplicate functions to find any thread of process

We have about 6 functions/callbacks to find_inferior meant to find a
thread that belongs to a given pid.  Remove all but
find_any_thread_of_pid and replace their uses with
find_any_thread_of_pid.

gdb/gdbserver/ChangeLog:

	* server.c (first_thread_of): Remove.
	(process_serial_event): Replace usage of first_thread_of with
	find_any_thread_of_pid.
	* tracepoint.c (same_process_p): Remove.
	(gdb_agent_about_to_close): Replace usage of same_process_p with
	find_any_thread_of_pid.
	* linux-x86-low.c (same_process_callback): Remove.
	(x86_arch_setup_process_callback): Replace usage of
	same_process_callback with find_any_thread_of_pid.
	* thread-db.c (any_thread_of): Remove.
	(switch_to_process): Replace usage of any_thread_of with
	find_any_thread_of_pid.
	* inferiors.c (thread_pid_matches_callback): Remove.
	(find_thread_process): Adjust to use find_any_thread_of_pid.

1 files changed, 1 insertions, 14 deletions

diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c
index 844a165..49f6b2d 100644
--- a/gdb/gdbserver/linux-x86-low.c
+++ b/gdb/gdbserver/linux-x86-low.c
@@ -846,17 +846,6 @@ x86_linux_read_description (void)
   gdb_assert_not_reached ("failed to return tdesc");
 }
 
-/* Callback for find_inferior.  Stops iteration when a thread with a
-   given PID is found.  */
-
-static int
-same_process_callback (struct inferior_list_entry *entry, void *data)
-{
-  int pid = *(int *) data;
-
-  return (ptid_get_pid (entry->id) == pid);
-}
-
 /* Callback for for_each_inferior.  Calls the arch_setup routine for
    each process.  */
 
@@ -866,9 +855,7 @@ x86_arch_setup_process_callback (struct inferior_list_entry *entry)
   int pid = ptid_get_pid (entry->id);
 
   /* Look up any thread of this processes.  */
-  current_thread
-    = (struct thread_info *) find_inferior (&all_threads,
-					    same_process_callback, &pid);
+  current_thread = find_any_thread_of_pid (pid);
 
   the_low_target.arch_setup ();
 }