[binutils-gdb] Remove usage of find_inferior in linux_stabilize_threads

[Simon Marchi <simark at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fcb056a58dd38cfe7bcd34b7889138bf807c40b8

commit fcb056a58dd38cfe7bcd34b7889138bf807c40b8
Author: Simon Marchi <simon.marchi@ericsson.com>
Date:   Sun Nov 19 22:23:25 2017 -0500

    Remove usage of find_inferior in linux_stabilize_threads
    
    Simply replace with find_thread.
    
    gdb/gdbserver/ChangeLog:
    
    	* linux-low.c (stuck_in_jump_pad_callback): Change prototype,
    	return bool, remove data argument.
    	(linux_stabilize_threads): Use find_thread.

Diff:
---
 gdb/gdbserver/ChangeLog   |  6 ++++++
 gdb/gdbserver/linux-low.c | 23 ++++++++---------------
 2 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index f824cff..9232f07 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,11 @@
 2017-11-19  Simon Marchi  <simon.marchi@ericsson.com>
 
+	* linux-low.c (stuck_in_jump_pad_callback): Change prototype,
+	return bool, remove data argument.
+	(linux_stabilize_threads): Use find_thread.
+
+2017-11-19  Simon Marchi  <simon.marchi@ericsson.com>
+
 	* linux-low.c (unsuspend_one_lwp): Remove.
 	(unsuspend_all_lwps): Use for_each_thread, inline code from
 	unsuspend_one_lwp.
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index fce3fd0..b4c716c 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -2985,7 +2985,7 @@ unsuspend_all_lwps (struct lwp_info *except)
 }
 
 static void move_out_of_jump_pad_callback (thread_info *thread);
-static int stuck_in_jump_pad_callback (thread_info *thread, void *data);
+static bool stuck_in_jump_pad_callback (thread_info *thread);
 static int lwp_running (thread_info *thread, void *data);
 static ptid_t linux_wait_1 (ptid_t ptid,
 			    struct target_waitstatus *ourstatus,
@@ -3024,13 +3024,8 @@ static ptid_t linux_wait_1 (ptid_t ptid,
 static void
 linux_stabilize_threads (void)
 {
-  struct thread_info *saved_thread;
-  struct thread_info *thread_stuck;
+  thread_info *thread_stuck = find_thread (stuck_in_jump_pad_callback);
 
-  thread_stuck
-    = (struct thread_info *) find_inferior (&all_threads,
-					    stuck_in_jump_pad_callback,
-					    NULL);
   if (thread_stuck != NULL)
     {
       if (debug_threads)
@@ -3039,7 +3034,7 @@ linux_stabilize_threads (void)
       return;
     }
 
-  saved_thread = current_thread;
+  thread_info *saved_thread = current_thread;
 
   stabilizing_threads = 1;
 
@@ -3082,10 +3077,8 @@ linux_stabilize_threads (void)
 
   if (debug_threads)
     {
-      thread_stuck
-	= (struct thread_info *) find_inferior (&all_threads,
-						stuck_in_jump_pad_callback,
-						NULL);
+      thread_stuck = find_thread (stuck_in_jump_pad_callback);
+
       if (thread_stuck != NULL)
 	debug_printf ("couldn't stabilize, LWP %ld got stuck in jump pad\n",
 		      lwpid_of (thread_stuck));
@@ -4111,13 +4104,13 @@ wait_for_sigstop (void)
     }
 }
 
-/* Returns true if LWP ENTRY is stopped in a jump pad, and we can't
+/* Returns true if THREAD is stopped in a jump pad, and we can't
    move it out, because we need to report the stop event to GDB.  For
    example, if the user puts a breakpoint in the jump pad, it's
    because she wants to debug it.  */
 
-static int
-stuck_in_jump_pad_callback (thread_info *thread, void *data)
+static bool
+stuck_in_jump_pad_callback (thread_info *thread)
 {
   struct lwp_info *lwp = get_thread_lwp (thread);