From a5909ec14bf162e60aedfad23ad5cf8cc12c9dc3 Mon Sep 17 00:00:00 2001
From: Michael Dickens <michael.dickens@ettus.com>
Date: Fri, 24 Jun 2016 16:48:32 -0400
Subject: usb: add virtual destructors where needed; make virtual destructors
 out-of-line from class definition to reduce number of vtables emitted
 (according to clang).

---
 host/lib/transport/libusb1_zero_copy.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'host/lib/transport/libusb1_zero_copy.cpp')

diff --git a/host/lib/transport/libusb1_zero_copy.cpp b/host/lib/transport/libusb1_zero_copy.cpp
index d2c7d2160..3f0db74de 100644
--- a/host/lib/transport/libusb1_zero_copy.cpp
+++ b/host/lib/transport/libusb1_zero_copy.cpp
@@ -125,6 +125,8 @@ public:
         _ctx(libusb::session::get_global_session()->get_context()),
         _lut(lut), _frame_size(frame_size) { /* NOP */ }
 
+    virtual ~libusb_zero_copy_mb(void);
+
     void release(void){
     	_release_cb(this);
     }
@@ -189,6 +191,10 @@ private:
     const size_t _frame_size;
 };
 
+libusb_zero_copy_mb::~libusb_zero_copy_mb(void) {
+    /* NOP */
+}
+
 /***********************************************************************
  * USB zero_copy device class
  **********************************************************************/
@@ -388,6 +394,8 @@ struct libusb_zero_copy_impl : usb_zero_copy
             size_t(hints.cast<double>("send_frame_size", DEFAULT_XFER_SIZE))));
     }
 
+    virtual ~libusb_zero_copy_impl(void);
+
     managed_recv_buffer::sptr get_recv_buff(double timeout)
     {
         boost::mutex::scoped_lock l(_recv_mutex);
@@ -410,6 +418,17 @@ struct libusb_zero_copy_impl : usb_zero_copy
     boost::mutex _recv_mutex, _send_mutex;
 };
 
+libusb_zero_copy_impl::~libusb_zero_copy_impl(void) {
+    /* NOP */
+}
+
+/***********************************************************************
+ * USB zero_copy destructor
+ **********************************************************************/
+usb_zero_copy::~usb_zero_copy(void) {
+    /* NOP */
+}
+
 /***********************************************************************
  * USB zero_copy make functions
  **********************************************************************/
-- 
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