Rename current_inferior as current_thread in gdbserver

GDB has a function named "current_inferior" and gdbserver has a global
variable named "current_inferior", but the two are not equivalent;
indeed, gdbserver does not have any real equivalent of what GDB calls
an inferior.  What gdbserver's "current_inferior" is actually pointing
to is a structure describing the current thread.  This commit renames
current_inferior as current_thread in gdbserver to clarify this.  It
also renames the function "set_desired_inferior" to "set_desired_thread"
and renames various local variables from foo_inferior to foo_thread.

gdb/gdbserver/ChangeLog:

	* inferiors.h (current_inferior): Renamed as...
	(current_thread): New variable.  All uses updated.
	* linux-low.c (get_pc): Renamed saved_inferior as saved_thread.
	(maybe_move_out_of_jump_pad): Likewise.
	(cancel_breakpoint): Likewise.
	(linux_low_filter_event): Likewise.
	(wait_for_sigstop): Likewise.
	(linux_resume_one_lwp): Likewise.
	(need_step_over_p): Likewise.
	(start_step_over): Likewise.
	(linux_stabilize_threads): Renamed save_inferior as saved_thread.
	* linux-x86-low.c (x86_linux_update_xmltarget): Likewise.
	* proc-service.c (ps_lgetregs): Renamed reg_inferior as reg_thread
	and save_inferior as saved_thread.
	* regcache.c (get_thread_regcache): Renamed saved_inferior as
	saved_thread.
	(regcache_invalidate_thread): Likewise.
	* remote-utils.c (prepare_resume_reply): Likewise.
	* thread-db.c (thread_db_get_tls_address): Likewise.
	(disable_thread_event_reporting): Likewise.
	(remove_thread_event_breakpoints): Likewise.
	* tracepoint.c (gdb_agent_about_to_close): Renamed save_inferior
	as saved_thread.
	* target.h (set_desired_inferior): Renamed as...
	(set_desired_thread): New declaration.  All uses updated.
	* server.c (myresume): Updated comment to reference thread instead
	of inferior.
	(handle_serial_event): Likewise.
	(handle_target_event): Likewise.

1 files changed, 3 insertions, 3 deletions

diff --git a/gdb/gdbserver/mem-break.c b/gdb/gdbserver/mem-break.c
index 07f9b20..d7481c4 100644
--- a/gdb/gdbserver/mem-break.c
+++ b/gdb/gdbserver/mem-break.c
@@ -995,7 +995,7 @@ check_gdb_bp_preconditions (char z_type, int *err)
       *err = 1;
       return 0;
     }
-  else if (current_inferior == NULL)
+  else if (current_thread == NULL)
     {
       *err = -1;
       return 0;
@@ -1212,7 +1212,7 @@ gdb_condition_true_at_breakpoint_z_type (char z_type, CORE_ADDR addr)
   if (bp->cond_list == NULL)
     return 1;
 
-  ctx.regcache = get_thread_regcache (current_inferior, 1);
+  ctx.regcache = get_thread_regcache (current_thread, 1);
   ctx.tframe = NULL;
   ctx.tpoint = NULL;
 
@@ -1336,7 +1336,7 @@ run_breakpoint_commands_z_type (char z_type, CORE_ADDR addr)
   if (bp == NULL)
     return 1;
 
-  ctx.regcache = get_thread_regcache (current_inferior, 1);
+  ctx.regcache = get_thread_regcache (current_thread, 1);
   ctx.tframe = NULL;
   ctx.tpoint = NULL;