1 files changed, 94 insertions, 0 deletions
diff --git a/include/gras/detail/sbuffer.hpp b/include/gras/detail/sbuffer.hpp
new file mode 100644
index 0000000..c3dab6b
--- /dev/null
+++ b/include/gras/detail/sbuffer.hpp
@@ -0,0 +1,94 @@
+// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
+
+#ifndef INCLUDED_GRAS_DETAIL_SBUFFER_HPP
+#define INCLUDED_GRAS_DETAIL_SBUFFER_HPP
+
+#include <boost/detail/atomic_count.hpp>
+
+namespace gras
+{
+
+struct SBufferImpl
+{
+    SBufferImpl(const SBufferConfig &config):
+        count(0),
+        config(config)
+    {
+        //NOP
+    }
+
+    boost::detail::atomic_count count;
+    SBufferConfig config;
+};
+
+
+extern GRAS_API void sbuffer_handle_deref(SBufferImpl *impl);
+
+GRAS_FORCE_INLINE void intrusive_ptr_add_ref(SBufferImpl *impl)
+{
+    ++impl->count;
+}
+
+GRAS_FORCE_INLINE void intrusive_ptr_release(SBufferImpl *impl)
+{
+    if (--impl->count == 0)
+    {
+        sbuffer_handle_deref(impl);
+    }
+}
+
+GRAS_FORCE_INLINE SBuffer::SBuffer(void):
+    offset(0),
+    length(0)
+{
+    //NOP
+}
+
+GRAS_FORCE_INLINE const void *SBuffer::get_actual_memory(void) const
+{
+    return (*this)->config.memory;
+}
+
+GRAS_FORCE_INLINE void *SBuffer::get_actual_memory(void)
+{
+    return (*this)->config.memory;
+}
+
+GRAS_FORCE_INLINE size_t SBuffer::get_actual_length(void) const
+{
+    return (*this)->config.length;
+}
+
+GRAS_FORCE_INLINE const void *SBuffer::get(const ptrdiff_t delta_bytes) const
+{
+    return ((char *)(*this)->config.memory) + this->offset + delta_bytes;
+}
+
+GRAS_FORCE_INLINE void *SBuffer::get(const ptrdiff_t delta_bytes)
+{
+    return ((char *)(*this)->config.memory) + this->offset + delta_bytes;
+}
+
+GRAS_FORCE_INLINE long SBuffer::get_affinity(void) const
+{
+    return (*this)->config.affinity;
+}
+
+GRAS_FORCE_INLINE size_t SBuffer::get_user_index(void) const
+{
+    return (*this)->config.user_index;
+}
+
+GRAS_FORCE_INLINE bool SBuffer::unique(void) const
+{
+    return (*this)->count == 1;
+}
+
+GRAS_FORCE_INLINE size_t SBuffer::use_count(void) const
+{
+    return (*this)->count;
+}
+
+} //namespace gras
+
+#endif /*INCLUDED_GRAS_DETAIL_SBUFFER_HPP*/