libc++: create portable smart ptr / hash_map/set

Creates ceph:: namespaced versions of smart pointers and unordered map
and sets.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>

src/include/Makefile.am

@@ -81,4 +81,8 @@ noinst_HEADERS += \
 	include/rbd/librbd.hpp\
 	include/util.h\
 	include/stat.h \
-	include/on_exit.h
+	include/on_exit.h \
+	include/memory.h \
+	include/hash_namespace.h \
+	include/unordered_set.h \
+	include/unordered_map.h

src/include/hash_namespace.h

@@ -0,0 +1,24 @@
+#ifndef CEPH_HASH_NAMESPACE_H
+#define CEPH_HASH_NAMESPACE_H
+
+#include <ciso646>
+
+#ifdef _LIBCPP_VERSION
+
+#include <functional>
+
+#define CEPH_HASH_NAMESPACE_START namespace std {
+#define CEPH_HASH_NAMESPACE_END }
+#define CEPH_HASH_NAMESPACE std
+
+#else
+
+#include <tr1/functional>
+
+#define CEPH_HASH_NAMESPACE_START namespace std { namespace tr1 {
+#define CEPH_HASH_NAMESPACE_END }}
+#define CEPH_HASH_NAMESPACE std::tr1
+
+#endif
+
+#endif

src/include/memory.h

@@ -0,0 +1,26 @@
+#ifndef CEPH_MEMORY_H
+#define CEPH_MEMORY_H
+
+#include <ciso646>
+
+#ifdef _LIBCPP_VERSION
+
+#include <memory>
+
+namespace ceph {
+  using std::shared_ptr;
+  using std::weak_ptr;
+}
+
+#else
+
+#include <tr1/memory>
+
+namespace ceph {
+  using std::tr1::shared_ptr;
+  using std::tr1::weak_ptr;
+}
+
+#endif
+
+#endif

src/include/unordered_map.h

@@ -0,0 +1,24 @@
+#ifndef CEPH_UNORDERED_MAP_H
+#define CEPH_UNORDERED_MAP_H
+
+#include <ciso646>
+
+#ifdef _LIBCPP_VERSION
+
+#include <unordered_map>
+
+namespace ceph {
+  using std::unordered_map;
+}
+
+#else
+
+#include <tr1/unordered_map>
+
+namespace ceph {
+  using std::tr1::unordered_map;
+}
+
+#endif
+
+#endif

src/include/unordered_set.h

@@ -0,0 +1,24 @@
+#ifndef CEPH_UNORDERED_SET_H
+#define CEPH_UNORDERED_SET_H
+
+#include <ciso646>
+
+#ifdef _LIBCPP_VERSION
+
+#include <unordered_set>
+
+namespace ceph {
+  using std::unordered_set;
+}
+
+#else
+
+#include <tr1/unordered_set>
+
+namespace ceph {
+  using std::tr1::unordered_set;
+}
+
+#endif
+
+#endif