added user driven last ptr for sbuffer stitching

3 files changed, 6 insertions, 1 deletions

diff --git a/include/gras/detail/sbuffer.hpp b/include/gras/detail/sbuffer.hpp
index c3dab6b..0d68ebc 100644
--- a/include/gras/detail/sbuffer.hpp
+++ b/include/gras/detail/sbuffer.hpp
@@ -39,7 +39,8 @@ GRAS_FORCE_INLINE void intrusive_ptr_release(SBufferImpl *impl)
 
 GRAS_FORCE_INLINE SBuffer::SBuffer(void):
     offset(0),
-    length(0)
+    length(0),
+    last(NULL)
 {
     //NOP
 }
diff --git a/include/gras/sbuffer.hpp b/include/gras/sbuffer.hpp
index b82aff1..2d63e50 100644
--- a/include/gras/sbuffer.hpp
+++ b/include/gras/sbuffer.hpp
@@ -116,6 +116,9 @@ struct GRAS_API SBuffer : boost::intrusive_ptr<SBufferImpl>
     //! The number of valid bytes past offset
     size_t length;
 
+    //! Pointer to the end of the last buffer
+    void *last;
+
     //! Get the affinity of the memory
     long get_affinity(void) const;
 
diff --git a/lib/sbuffer.cpp b/lib/sbuffer.cpp
index c1f3b75..03f87b1 100644
--- a/lib/sbuffer.cpp
+++ b/lib/sbuffer.cpp
@@ -34,6 +34,7 @@ SBufferConfig::SBufferConfig(void)
     memory = NULL;
     length = 0;
     affinity = -1;
+    user_index = ~0;
 }
 
 static void numa_mem_deleter(SBuffer &buff)