Remove usages of find_inferior in stop_all_lwps

Replace with for_each_thread.

gdb/gdbserver/ChangeLog:

	* linux-low.c (send_sigstop_callback): Return void, change
	parameter type.  Rename to...
	(send_sigstop): ... this.
	(suspend_and_send_sigstop_callback): Return void, change parameter
	type.  Rename to...
	(suspend_and_send_sigstop): ... this.
	(stop_all_lwps): Use for_each_thread.

2 files changed, 27 insertions, 11 deletions

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 88319ae209..1d88781cce 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,15 @@
 2017-12-02  Simon Marchi  <simon.marchi@polymtl.ca>
 
+	* linux-low.c (send_sigstop_callback): Return void, change
+	parameter type.  Rename to...
+	(send_sigstop): ... this.
+	(suspend_and_send_sigstop_callback): Return void, change parameter
+	type.  Rename to...
+	(suspend_and_send_sigstop): ... this.
+	(stop_all_lwps): Use for_each_thread.
+
+2017-12-02  Simon Marchi  <simon.marchi@polymtl.ca>
+
 	* linux-low.c (lwp_running): Return bool, remove unused
 	argument.
 	(linux_stabilize_threads): Use find_thread.
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 840bf694b7..9725b4906c 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -3933,36 +3933,35 @@ send_sigstop (struct lwp_info *lwp)
   kill_lwp (pid, SIGSTOP);
 }
 
-static int
-send_sigstop_callback (thread_info *thread, void *except)
+static void
+send_sigstop (thread_info *thread, lwp_info *except)
 {
   struct lwp_info *lwp = get_thread_lwp (thread);
 
   /* Ignore EXCEPT.  */
   if (lwp == except)
-    return 0;
+    return;
 
   if (lwp->stopped)
-    return 0;
+    return;
 
   send_sigstop (lwp);
-  return 0;
 }
 
 /* Increment the suspend count of an LWP, and stop it, if not stopped
    yet.  */
-static int
-suspend_and_send_sigstop_callback (thread_info *thread, void *except)
+static void
+suspend_and_send_sigstop (thread_info *thread, lwp_info *except)
 {
   struct lwp_info *lwp = get_thread_lwp (thread);
 
   /* Ignore EXCEPT.  */
   if (lwp == except)
-    return 0;
+    return;
 
   lwp_suspended_inc (lwp);
 
-  return send_sigstop_callback (thread, except);
+  send_sigstop (thread, except);
 }
 
 static void
@@ -4157,9 +4156,16 @@ stop_all_lwps (int suspend, struct lwp_info *except)
 		      : STOPPING_THREADS);
 
   if (suspend)
-    find_inferior (&all_threads, suspend_and_send_sigstop_callback, except);
+    for_each_thread ([&] (thread_info *thread)
+      {
+	suspend_and_send_sigstop (thread, except);
+      });
   else
-    find_inferior (&all_threads, send_sigstop_callback, except);
+    for_each_thread ([&] (thread_info *thread)
+      {
+	 send_sigstop (thread, except);
+      });
+
   wait_for_sigstop ();
   stopping_threads = NOT_STOPPING_THREADS;