Move wait_for_debug_event to nat/windows-nat.c

This moves the wait_for_debug_event helper function to
nat/windows-nat.c, and changes gdbserver to use it.
wait_for_debug_event is a wrapper for WaitForDebugEvent that also sets
last_wait_event when appropriate.  This is needed to properly handle
queued stops.

gdb/ChangeLog
2020-04-08  Tom Tromey  <tromey@adacore.com>

	* windows-nat.c (wait_for_debug_event): Move to
	nat/windows-nat.c.
	* nat/windows-nat.h (wait_for_debug_event): Declare.
	* nat/windows-nat.c (wait_for_debug_event): Move from
	windows-nat.c.  No longer static.

gdbserver/ChangeLog
2020-04-08  Tom Tromey  <tromey@adacore.com>

	* win32-low.c (win32_kill, get_child_debug_event): Use
	wait_for_debug_event.

1 files changed, 3 insertions, 3 deletions

diff --git a/gdbserver/win32-low.cc b/gdbserver/win32-low.cc
index 33f6470..d151505 100644
--- a/gdbserver/win32-low.cc
+++ b/gdbserver/win32-low.cc
@@ -797,7 +797,7 @@ win32_process_target::kill (process_info *process)
     {
       if (!child_continue (DBG_CONTINUE, -1))
 	break;
-      if (!WaitForDebugEvent (&current_event, INFINITE))
+      if (!wait_for_debug_event (&current_event, INFINITE))
 	break;
       if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
 	break;
@@ -1231,7 +1231,7 @@ get_child_debug_event (DWORD *continue_status,
 	 happen is the user will see a spurious breakpoint.  */
 
       current_event.dwDebugEventCode = 0;
-      if (!WaitForDebugEvent (&current_event, 0))
+      if (!wait_for_debug_event (&current_event, 0))
 	{
 	  OUTMSG2(("no attach events left\n"));
 	  fake_breakpoint_event ();
@@ -1246,7 +1246,7 @@ get_child_debug_event (DWORD *continue_status,
       /* Keep the wait time low enough for comfortable remote
 	 interruption, but high enough so gdbserver doesn't become a
 	 bottleneck.  */
-      if (!WaitForDebugEvent (&current_event, 250))
+      if (!wait_for_debug_event (&current_event, 250))
         {
 	  DWORD e  = GetLastError();