From 33e33d260dddd6adb226814415811926c1a779ae Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 26 Jul 2010 15:40:44 +0200
Subject: Buffer implementation

---
 odb/buffer.cxx | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 odb/buffer.cxx

(limited to 'odb/buffer.cxx')

diff --git a/odb/buffer.cxx b/odb/buffer.cxx
new file mode 100644
index 0000000..f920258
--- /dev/null
+++ b/odb/buffer.cxx
@@ -0,0 +1,34 @@
+// file      : odb/buffer.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <cstring> // std::memcpy
+
+#include <odb/buffer.hxx>
+
+using namespace std;
+
+namespace odb
+{
+  void buffer::
+  capacity (size_t c, size_t data_size)
+  {
+    if (c > capacity_)
+    {
+      size_t n (capacity_ * 2 > c ? capacity_ * 2 : c);
+      char* d (static_cast<char*> (operator new (n)));
+
+      if (data_ != 0)
+      {
+        if (data_size != 0)
+          memcpy (d, data_, data_size);
+
+        operator delete (data_);
+      }
+
+      data_ = d;
+      capacity_ = n;
+    }
+  }
+}
-- 
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