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/tracepoint.c b/gdb/gdbserver/tracepoint.c
index 68ce10f..0f41ff4 100644
--- a/gdb/gdbserver/tracepoint.c
+++ b/gdb/gdbserver/tracepoint.c
@@ -3956,17 +3956,6 @@ cmd_qtstmat (char *packet)
     run_inferior_command (packet, strlen (packet) + 1);
 }
 
-/* Helper for gdb_agent_about_to_close.
-   Return non-zero if thread ENTRY is in the same process in DATA.  */
-
-static int
-same_process_p (struct inferior_list_entry *entry, void *data)
-{
-  int *pid = (int *) data;
-
-  return ptid_get_pid (entry->id) == *pid;
-}
-
 /* Sent the agent a command to close it.  */
 
 void
@@ -3981,8 +3970,7 @@ gdb_agent_about_to_close (int pid)
       saved_thread = current_thread;
 
       /* Find any thread which belongs to process PID.  */
-      current_thread = (struct thread_info *)
-	find_inferior (&all_threads, same_process_p, &pid);
+      current_thread = find_any_thread_of_pid (pid);
 
       strcpy (buf, "close");