From f78de01ab6702ab13af059b3c8dde4008761fe54 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage.weil@dreamhost.com>
Date: Mon, 20 Jun 2011 13:54:41 -0700
Subject: [PATCH] encoding: add list<shared_ptr<T>> macros

Signed-off-by: Sage Weil <sage.weil@dreamhost.com>
---
 src/include/encoding.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/include/encoding.h b/src/include/encoding.h
index 8ab5fe90f37e7..f9e35145391e7 100644
--- a/src/include/encoding.h
+++ b/src/include/encoding.h
@@ -21,6 +21,8 @@
 
 using namespace ceph;
 
+#include <tr1/memory>
+
 // --------------------------------------
 // base types
 
@@ -296,6 +298,41 @@ inline void decode(std::list<T>& ls, bufferlist::iterator& p)
   }
 }
 
+template<class T>
+inline void encode(const std::list<std::tr1::shared_ptr<T> >& ls, bufferlist& bl)
+{
+  // should i pre- or post- count?
+  if (!ls.empty()) {
+    unsigned pos = bl.length();
+    unsigned n = 0;
+    encode(n, bl);
+    for (typename std::list<std::tr1::shared_ptr<T> >::const_iterator p = ls.begin(); p != ls.end(); ++p) {
+      n++;
+      encode(**p, bl);
+    }
+    __le32 en;
+    en = n;
+    bl.copy_in(pos, sizeof(en), (char*)&en);
+  } else {
+    __u32 n = ls.size();    // FIXME: this is slow on a list.
+    encode(n, bl);
+    for (typename std::list<std::tr1::shared_ptr<T> >::const_iterator p = ls.begin(); p != ls.end(); ++p)
+      encode(**p, bl);
+  }
+}
+template<class T>
+inline void decode(std::list<std::tr1::shared_ptr<T> >& ls, bufferlist::iterator& p)
+{
+  __u32 n;
+  decode(n, p);
+  ls.clear();
+  while (n--) {
+    std::tr1::shared_ptr<T> v(new T);
+    decode(*v, p);
+    ls.push_back(v);
+  }
+}
+
 // set
 template<class T>
 inline void encode(const std::set<T>& s, bufferlist& bl)
-- 
2.39.5