From 2e501c68a8641a2b3c430b55f13491a9c1c5d0f5 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 11 May 2010 12:20:11 +0200
Subject: Add support for custom allocators

New example: examples/cxx/hybrid/allocator.
---
 libxsde/xsde/cxx/hybrid/cdr/istream.txx | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'libxsde/xsde/cxx/hybrid/cdr/istream.txx')

diff --git a/libxsde/xsde/cxx/hybrid/cdr/istream.txx b/libxsde/xsde/cxx/hybrid/cdr/istream.txx
index 58cd98b..f1d8d6c 100644
--- a/libxsde/xsde/cxx/hybrid/cdr/istream.txx
+++ b/libxsde/xsde/cxx/hybrid/cdr/istream.txx
@@ -3,6 +3,10 @@
 // copyright : Copyright (c) 2005-2010 Code Synthesis Tools CC
 // license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
 
+#ifdef XSDE_CUSTOM_ALLOCATOR
+#  include <xsde/cxx/allocator.hxx>
+#endif
+
 namespace xsde
 {
   namespace cxx
@@ -73,7 +77,14 @@ namespace xsde
 
           while (n--)
           {
+#ifndef XSDE_CUSTOM_ALLOCATOR
             T* p = new T;
+#else
+            T* p = static_cast<T*> (alloc (sizeof (T)));
+            alloc_guard pg (p);
+            new (p) T;
+            pg.release ();
+#endif
             typename var_sequence<T>::guard g (p);
             s >> *p;
             g.release ();
@@ -159,14 +170,28 @@ namespace xsde
 
           while (n--)
           {
+#ifndef XSDE_CUSTOM_ALLOCATOR
             T* p = new T;
 
             if (p == 0)
               return false;
+#else
+            void* v = alloc (sizeof (T));
+
+            if (v == 0)
+              return false;
+
+            T* p = new (v) T; // c-tor cannot fail
+#endif
 
             if (!(s >> *p))
             {
+#ifndef XSDE_CUSTOM_ALLOCATOR
               delete p;
+#else
+              p->~T ();
+              cxx::free (p);
+#endif
               return false;
             }
 
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