Bug #25892493 GR XCOM SERVICE SEGFAULTS WHEN MORE THAN 1024 FILE DESCRIPTORS ARE IN USE

Switched from select to poll in task.c and inlined functions in
xdr_utils. The polling code now dynamically allocates as space for new
file descriptors, so the number is now in principle only limited by
the available memory. Added deinit functions. Fixed bugs in unpoll and
wake_all_io that caused task waiting for IO to not terminate because
the reference count never went to 0.
Added interface to WSAPoll on Windows.

Author: Ole-Hjalmar Kristensen

rapid/plugin/group_replication/libmysqlgcs/src/bindings/xcom/xcom/app_data.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -33,8 +33,11 @@
 #include "node_list.h"
 #include "xcom_vp_str.h"
 
+define_xdr_funcs(synode_no)
+define_xdr_funcs(app_data_ptr)
 
 static app_data_list nextp(app_data_list l);
+static unsigned long msg_count(app_data_ptr a);
 
 /**
    Debug a single app_data struct.
@@ -370,8 +373,7 @@ void follow(app_data_list l, app_data_ptr p)
 /**
    Count the number of messages in a list.
  */
-unsigned long msg_count(app_data_ptr a)
-{
+static unsigned long msg_count(app_data_ptr a) {
   unsigned long n = 0;
   while(a){
     n++;
@@ -380,7 +382,6 @@ unsigned long msg_count(app_data_ptr a)
   return n;
 }
 
-define_xdr_funcs(app_data_ptr)
 
 /* {{{ Message constructors */
 

rapid/plugin/group_replication/libmysqlgcs/src/bindings/xcom/xcom/app_data.h

@@ -1,4 +1,4 @@
-/* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -34,8 +34,6 @@ app_data_ptr new_exit();
 app_data_ptr new_nodes(u_int n, node_address *names, cargo_type cargo);
 app_data_ptr new_reset(cargo_type type);
 
-d_xdr_funcs(app_data_ptr)
-unsigned long msg_count(app_data_ptr a);
 void _replace_app_data_list(app_data_list target, app_data_ptr source);
 char *dbg_app_data(app_data_ptr a);
 void follow(app_data_list l, app_data_ptr p);

rapid/plugin/group_replication/libmysqlgcs/src/bindings/xcom/xcom/synode_no.h

@@ -1,4 +1,4 @@
-/* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+/* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -28,8 +28,6 @@ extern "C" {
 #define SY_FMT_DEF "%x %llu %u"
 #define SY_MEM(s) (s).group_id, (long long unsigned int)(s).msgno, (s).node
 
-d_xdr_funcs(synode_no)
-
 int	synode_eq(synode_no x, synode_no y);
 int	synode_gt(synode_no x, synode_no y);
 int	synode_lt(synode_no x, synode_no y);