1 files changed, 70 insertions, 0 deletions
diff --git a/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Message_Block_Data_Iterator.h b/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Message_Block_Data_Iterator.h
new file mode 100644
index 00000000000..0378e1aac7c
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+++ b/TAO/orbsvcs/orbsvcs/PortableGroup/UIPMC_Message_Block_Data_Iterator.h
@@ -0,0 +1,70 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file     UIPMC_Message_Block_Data_Iterator.h
+ *
+ *  $Id$
+ *
+ *  @author Frank Hunleth <frank@hunleth.com>
+ */
+//=============================================================================
+
+#ifndef TAO_UIPMC_MESSAGE_BLOCK_DATA_ITERATOR_H
+#define TAO_UIPMC_MESSAGE_BLOCK_DATA_ITERATOR_H
+#include /**/ "ace/pre.h"
+
+#include "ace/os_include/sys/os_uio.h"
+#include "ace/os_include/os_stddef.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "tao/Versioned_Namespace.h"
+
+TAO_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class UIPMC_Message_Block_Data_Iterator
+ *
+ * @brief This is a help class for iterating through ACE_Message_Blocks and to
+ *        segment them into MIOP packets.
+ */
+class UIPMC_Message_Block_Data_Iterator
+{
+public:
+  /// Constructor
+  UIPMC_Message_Block_Data_Iterator (iovec *iov, int iovcnt);
+
+  /// Get the next data block that has a size less than or equal
+  /// to max_length.  Return the length of the block returned.
+  size_t next_block (size_t max_length,
+                     iovec &block);
+
+private:
+  enum State
+  {
+    INTER_BLOCK,
+    INTRA_BLOCK
+  };
+
+  iovec *iov_;
+  int iovcnt_;
+
+  // Point internal to a message block, if we have to split one up.
+  char *iov_ptr_;
+  int iov_index_;
+
+  // Length used in a split message block.
+  size_t iov_len_left_;
+
+  // Current message iterator state.
+  State state_;
+
+};
+
+TAO_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+#endif  /* TAO_UIPMC_MESSAGE_BLOCK_DATA_ITERATOR_H */