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, 13 deletions

diff --git a/gdb/gdbserver/inferiors.c b/gdb/gdbserver/inferiors.c
index 3c171a1..2212850 100644
--- a/gdb/gdbserver/inferiors.c
+++ b/gdb/gdbserver/inferiors.c
@@ -141,25 +141,13 @@ find_thread_ptid (ptid_t ptid)
   return (struct thread_info *) find_inferior_id (&all_threads, ptid);
 }
 
-/* Predicate function for matching thread entry's pid to the given
-   pid value passed by address in ARGS.  */
-
-static int
-thread_pid_matches_callback (struct inferior_list_entry *entry, void *args)
-{
-  return (ptid_get_pid (entry->id) == *(pid_t *)args);
-}
-
 /* Find a thread associated with the given PROCESS, or NULL if no
    such thread exists.  */
 
 static struct thread_info *
 find_thread_process (const struct process_info *const process)
 {
-  pid_t pid = ptid_get_pid (ptid_of (process));
-
-  return (struct thread_info *)
-    find_inferior (&all_threads, thread_pid_matches_callback, &pid);
+  return find_any_thread_of_pid (process->entry.id.pid ());
 }
 
 /* Helper for find_any_thread_of_pid.  Returns true if a thread