1 files changed, 53 insertions, 0 deletions
diff --git a/ACE/ace/OS_NS_sys_sendfile.cpp b/ACE/ace/OS_NS_sys_sendfile.cpp
new file mode 100644
index 00000000000..ce6cf66e3e9
--- /dev/null
+++ b/ACE/ace/OS_NS_sys_sendfile.cpp
@@ -0,0 +1,53 @@
+// $Id$
+
+#include "ace/OS_NS_sys_sendfile.h"
+#include "ace/OS_NS_sys_mman.h"
+
+#if defined (ACE_WIN32) || defined (HPUX)
+# include "ace/OS_NS_sys_socket.h"
+#else
+# include "ace/OS_NS_unistd.h"
+#endif  /* ACE_WIN32 || HPUX */
+
+#ifndef ACE_HAS_INLINED_OSCALLS
+# include "ace/OS_NS_sys_sendfile.inl"
+#endif  /* ACE_HAS_INLINED_OSCALLS */
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+#if defined ACE_HAS_SENDFILE && ACE_HAS_SENDFILE == 0
+ssize_t
+ACE_OS::sendfile_emulation (ACE_HANDLE out_fd,
+                            ACE_HANDLE in_fd,
+                            off_t * offset,
+                            size_t count)
+{
+  // @@ Is it possible to inline a call to ::TransmitFile() on
+  //    MS Windows instead of emulating here?
+
+  // @@ We may want set up a signal lease (or oplock) if supported by
+  //    the platform so that we don't get a bus error if the mmap()ed
+  //    file is truncated.
+  void * const buf =
+    ACE_OS::mmap (0, count, PROT_READ, MAP_SHARED, in_fd, *offset);
+
+  if (buf == MAP_FAILED)
+    return -1;
+
+#if defined (ACE_WIN32) || defined (HPUX)
+  ssize_t const r =
+    ACE_OS::send (out_fd, static_cast<const char *> (buf), count);
+#else
+  ssize_t const r = ACE_OS::write (out_fd, buf, count);
+#endif /* ACE_WIN32 */
+
+  (void) ACE_OS::munmap (buf, count);
+
+  if (r > 0)
+    *offset += static_cast<off_t> (r);
+
+  return r;
+}
+#endif  /* ACE_HAS_SENDFILE==0 */
+
+ACE_END_VERSIONED_NAMESPACE_DECL