8 files changed, 50 insertions, 538 deletions
diff --git a/gnuradio-runtime/include/gnuradio/CMakeLists.txt b/gnuradio-runtime/include/gnuradio/CMakeLists.txt
index 056af5d6f4..d8e9c193ee 100644
--- a/gnuradio-runtime/include/gnuradio/CMakeLists.txt
+++ b/gnuradio-runtime/include/gnuradio/CMakeLists.txt
@@ -23,7 +23,6 @@ install(FILES
   constants.h
   endianness.h
   expj.h
-  feval.h
   flowgraph.h
   fxpt.h
   fxpt_nco.h
@@ -42,7 +41,6 @@ install(FILES
   msg_queue.h
   nco.h
   prefs.h
-  py_feval.h
   pycallback_object.h
   random.h
   realtime.h
diff --git a/gnuradio-runtime/include/gnuradio/basic_block.h b/gnuradio-runtime/include/gnuradio/basic_block.h
index 651fda2136..47d939a5bc 100644
--- a/gnuradio-runtime/include/gnuradio/basic_block.h
+++ b/gnuradio-runtime/include/gnuradio/basic_block.h
@@ -18,9 +18,9 @@
 #include <gnuradio/runtime_types.h>
 #include <gnuradio/sptr_magic.h>
 #include <gnuradio/thread/thread.h>
-#include <boost/function.hpp>
 #include <boost/thread/condition_variable.hpp>
 #include <deque>
+#include <functional>
 #include <map>
 #include <string>
 
@@ -42,7 +42,7 @@ namespace gr {
 class GR_RUNTIME_API basic_block : public msg_accepter,
                                    public std::enable_shared_from_this<basic_block>
 {
-    typedef boost::function<void(pmt::pmt_t)> msg_handler_t;
+    typedef std::function<void(pmt::pmt_t)> msg_handler_t;
 
 private:
     typedef std::map<pmt::pmt_t, msg_handler_t, pmt::comparator> d_msg_handlers_t;
diff --git a/gnuradio-runtime/include/gnuradio/block.h b/gnuradio-runtime/include/gnuradio/block.h
index 2a47a05715..4f4bfb6953 100644
--- a/gnuradio-runtime/include/gnuradio/block.h
+++ b/gnuradio-runtime/include/gnuradio/block.h
@@ -60,7 +60,7 @@ class GR_RUNTIME_API block : public basic_block
 {
 public:
     //! Magic return values from general_work
-    enum { WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 };
+    enum work_return_t { WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 };
 
     /*!
      * \brief enum to represent different tag propagation policies.
diff --git a/gnuradio-runtime/include/gnuradio/block_gateway.h b/gnuradio-runtime/include/gnuradio/block_gateway.h
index bcf3a7b27d..d42dfbb620 100644
--- a/gnuradio-runtime/include/gnuradio/block_gateway.h
+++ b/gnuradio-runtime/include/gnuradio/block_gateway.h
@@ -1,6 +1,6 @@
 /* -*- c++ -*- */
 /*
- * Copyright 2011-2013,2017 Free Software Foundation, Inc.
+ * Copyright 2011-2013,2017,2020 Free Software Foundation, Inc.
  *
  * This file is part of GNU Radio
  *
@@ -13,332 +13,107 @@
 
 #include <gnuradio/api.h>
 #include <gnuradio/block.h>
-#include <gnuradio/feval.h>
+#include <string>
 
-namespace gr {
-
-/*!
- * The work type enum tells the gateway what kind of block to
- * implement.  The choices are familiar gnuradio block overloads
- * (sync, decim, interp).
- */
-enum block_gw_work_type {
-    GR_BLOCK_GW_WORK_GENERAL,
-    GR_BLOCK_GW_WORK_SYNC,
-    GR_BLOCK_GW_WORK_DECIM,
-    GR_BLOCK_GW_WORK_INTERP,
-};
-
-//! Magic return values from general_work, \ref gr::block::WORK_CALLED_PRODUCE
-enum block_gw_work_return_type { WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 };
-enum tag_propagation_policy_t {
-    TPP_DONT = 0,
-    TPP_ALL_TO_ALL = 1,
-    TPP_ONE_TO_ONE = 2,
-    TPP_CUSTOM = 3
-};
-
-/*!
- * Shared message structure between python and gateway.
- * Each action type represents a scheduler-called function.
- */
-struct block_gw_message_type {
-    enum action_type {
-        ACTION_GENERAL_WORK, // dispatch work
-        ACTION_WORK,         // dispatch work
-        ACTION_FORECAST,     // dispatch forecast
-        ACTION_START,        // dispatch start
-        ACTION_STOP,         // dispatch stop
-    };
-
-    action_type action;
-
-    int general_work_args_noutput_items;
-    std::vector<int> general_work_args_ninput_items;
-    std::vector<void*> general_work_args_input_items; // TODO this should be const void*,
-                                                      // but swig can't int cast it right
-    std::vector<void*> general_work_args_output_items;
-    int general_work_args_return_value;
-
-    int work_args_ninput_items;
-    int work_args_noutput_items;
-    std::vector<void*> work_args_input_items; // TODO this should be const void*, but swig
-                                              // can't int cast it right
-    std::vector<void*> work_args_output_items;
-    int work_args_return_value;
-
-    int forecast_args_noutput_items;
-    std::vector<int> forecast_args_ninput_items_required;
-
-    bool start_args_return_value;
+#include <pybind11/pybind11.h> // must be first
+#include <pybind11/stl.h>
+namespace py = pybind11;
 
-    bool stop_args_return_value;
-};
+namespace gr {
 
 /*!
  * The gateway block which performs all the magic.
  *
  * The gateway provides access to all the gr::block routines.
- * The methods prefixed with gr::block__ are renamed
- * to class methods without the prefix in python.
  */
+typedef enum {
+    GW_BLOCK_GENERAL = 0,
+    GW_BLOCK_SYNC,
+    GW_BLOCK_DECIM,
+    GW_BLOCK_INTERP
+} gw_block_t;
+
 class GR_RUNTIME_API block_gateway : virtual public gr::block
 {
+private:
+    py::handle d_py_handle;
+
 public:
     // gr::block_gateway::sptr
     typedef std::shared_ptr<block_gateway> sptr;
 
     /*!
      * Make a new gateway block.
-     * \param handler the swig director object with callback
+     * \param py_object the pybind11 object with callback
      * \param name the name of the block (Ex: "Shirley")
      * \param in_sig the input signature for this block
      * \param out_sig the output signature for this block
-     * \param work_type the type of block overload to implement
-     * \param factor the decimation or interpolation factor
      * \return a new gateway block
      */
-    static sptr make(gr::feval_ll* handler,
+    static sptr make(const py::object& py_handle,
                      const std::string& name,
                      gr::io_signature::sptr in_sig,
-                     gr::io_signature::sptr out_sig,
-                     const block_gw_work_type work_type,
-                     const unsigned factor);
-
-    //! Provide access to the shared message object
-    virtual block_gw_message_type& block_message(void) = 0;
-
-    long block__unique_id(void) const { return gr::block::unique_id(); }
-
-    std::string block__name(void) const { return gr::block::name(); }
+                     gr::io_signature::sptr out_sig);
 
-    unsigned block__history(void) const { return gr::block::history(); }
-
-    void block__set_history(unsigned history) { return gr::block::set_history(history); }
-
-    void block__set_block_alias(std::string alias)
-    {
-        return gr::block::set_block_alias(alias);
-    }
-
-    std::string block__alias(void) const { return gr::block::alias(); }
-
-    void block__set_processor_affinity(std::vector<int> mask)
-    {
-        return gr::block::set_processor_affinity(mask);
-    }
-
-    void block__set_fixed_rate(bool fixed_rate)
-    {
-        return gr::block::set_fixed_rate(fixed_rate);
-    }
-
-    bool block__fixed_rate(void) const { return gr::block::fixed_rate(); }
-
-    void block__set_output_multiple(int multiple)
-    {
-        return gr::block::set_output_multiple(multiple);
-    }
-
-    void block__set_min_output_buffer(int port, long size)
-    {
-        return gr::block::set_min_output_buffer(port, size);
-    }
-
-    void block__set_min_output_buffer(long size)
-    {
-        return gr::block::set_min_output_buffer(size);
-    }
-
-    long block__max_output_buffer(size_t i) { return gr::block::max_output_buffer(i); }
-
-    void block__set_max_output_buffer(long max_output_buffer)
-    {
-        gr::block::set_max_output_buffer(max_output_buffer);
-    }
-
-    void block__set_max_output_buffer(int port, long max_output_buffer)
-    {
-        gr::block::set_max_output_buffer(port, max_output_buffer);
-    }
-
-    int block__output_multiple(void) const { return gr::block::output_multiple(); }
-
-    void block__consume(int which_input, int how_many_items)
-    {
-        return gr::block::consume(which_input, how_many_items);
-    }
-
-    void block__consume_each(int how_many_items)
-    {
-        return gr::block::consume_each(how_many_items);
-    }
 
-    void block__produce(int which_output, int how_many_items)
-    {
-        return gr::block::produce(which_output, how_many_items);
-    }
-
-    void block__set_relative_rate(double relative_rate)
-    {
-        return gr::block::set_relative_rate(relative_rate);
-    }
-
-    void block__set_inverse_relative_rate(double inverse_relative_rate)
-    {
-        return gr::block::set_inverse_relative_rate(inverse_relative_rate);
-    }
-
-    void block__set_relative_rate(uint64_t interpolation, uint64_t decimation)
-    {
-        return gr::block::set_relative_rate(interpolation, decimation);
-    }
-
-    double block__relative_rate(void) const { return gr::block::relative_rate(); }
-
-    uint64_t block__relative_rate_i(void) const { return gr::block::relative_rate_i(); }
-
-    uint64_t block__relative_rate_d(void) const { return gr::block::relative_rate_d(); }
-
-    uint64_t block__nitems_read(unsigned int which_input)
-    {
-        return gr::block::nitems_read(which_input);
-    }
-
-    uint64_t block__nitems_written(unsigned int which_output)
-    {
-        return gr::block::nitems_written(which_output);
-    }
-
-    block::tag_propagation_policy_t block__tag_propagation_policy(void)
-    {
-        return gr::block::tag_propagation_policy();
-    }
-
-    void block__set_tag_propagation_policy(block::tag_propagation_policy_t p)
-    {
-        return gr::block::set_tag_propagation_policy(p);
-    }
-
-    void block__add_item_tag(unsigned int which_output, const tag_t& tag)
+    // Protected members of gr::block trampolined here for python blocks to use
+    void _add_item_tag(unsigned int which_output, const tag_t& tag)
     {
         return gr::block::add_item_tag(which_output, tag);
     }
 
-    void block__add_item_tag(unsigned int which_output,
-                             uint64_t abs_offset,
-                             const pmt::pmt_t& key,
-                             const pmt::pmt_t& value,
-                             const pmt::pmt_t& srcid = pmt::PMT_F)
+    void _add_item_tag(unsigned int which_output,
+                       uint64_t abs_offset,
+                       const pmt::pmt_t& key,
+                       const pmt::pmt_t& value,
+                       const pmt::pmt_t& srcid = pmt::PMT_F)
     {
         return gr::block::add_item_tag(which_output, abs_offset, key, value, srcid);
     }
 
-    std::vector<tag_t> block__get_tags_in_range(unsigned int which_input,
-                                                uint64_t abs_start,
-                                                uint64_t abs_end)
+
+    std::vector<tag_t>
+    _get_tags_in_range(unsigned int which_input, uint64_t abs_start, uint64_t abs_end)
     {
         std::vector<gr::tag_t> tags;
         gr::block::get_tags_in_range(tags, which_input, abs_start, abs_end);
         return tags;
     }
 
-    std::vector<tag_t> block__get_tags_in_range(unsigned int which_input,
-                                                uint64_t abs_start,
-                                                uint64_t abs_end,
-                                                const pmt::pmt_t& key)
+    std::vector<tag_t> _get_tags_in_range(unsigned int which_input,
+                                          uint64_t abs_start,
+                                          uint64_t abs_end,
+                                          const pmt::pmt_t& key)
     {
         std::vector<gr::tag_t> tags;
         gr::block::get_tags_in_range(tags, which_input, abs_start, abs_end, key);
         return tags;
     }
 
-    std::vector<tag_t> block__get_tags_in_window(unsigned int which_input,
-                                                 uint64_t rel_start,
-                                                 uint64_t rel_end)
+    std::vector<tag_t>
+    _get_tags_in_window(unsigned int which_input, uint64_t rel_start, uint64_t rel_end)
     {
         std::vector<gr::tag_t> tags;
         gr::block::get_tags_in_window(tags, which_input, rel_start, rel_end);
         return tags;
     }
 
-    std::vector<tag_t> block__get_tags_in_window(unsigned int which_input,
-                                                 uint64_t rel_start,
-                                                 uint64_t rel_end,
-                                                 const pmt::pmt_t& key)
+    std::vector<tag_t> _get_tags_in_window(unsigned int which_input,
+                                           uint64_t rel_start,
+                                           uint64_t rel_end,
+                                           const pmt::pmt_t& key)
     {
         std::vector<gr::tag_t> tags;
         gr::block::get_tags_in_window(tags, which_input, rel_start, rel_end, key);
         return tags;
     }
 
-    /* Message passing interface */
-    void block__message_port_register_in(pmt::pmt_t port_id)
-    {
-        gr::basic_block::message_port_register_in(port_id);
-    }
-
-    void block__message_port_register_out(pmt::pmt_t port_id)
-    {
-        gr::basic_block::message_port_register_out(port_id);
-    }
-
-    void block__message_port_pub(pmt::pmt_t port_id, pmt::pmt_t msg)
-    {
-        gr::basic_block::message_port_pub(port_id, msg);
-    }
-
-    void block__message_port_sub(pmt::pmt_t port_id, pmt::pmt_t target)
-    {
-        gr::basic_block::message_port_sub(port_id, target);
-    }
-
-    void block__message_port_unsub(pmt::pmt_t port_id, pmt::pmt_t target)
-    {
-        gr::basic_block::message_port_unsub(port_id, target);
-    }
-
-    pmt::pmt_t block__message_subscribers(pmt::pmt_t which_port)
-    {
-        return gr::basic_block::message_subscribers(which_port);
-    }
-
-    pmt::pmt_t block__message_ports_in() { return gr::basic_block::message_ports_in(); }
-
-    pmt::pmt_t block__message_ports_out() { return gr::basic_block::message_ports_out(); }
-
-    void set_msg_handler_feval(pmt::pmt_t which_port, gr::feval_p* msg_handler)
-    {
-        if (msg_queue.find(which_port) == msg_queue.end()) {
-            throw std::runtime_error(
-                "attempt to set_msg_handler_feval() on bad input message port!");
-        }
-        d_msg_handlers_feval[which_port] = msg_handler;
-    }
+    virtual void set_msg_handler_pybind(pmt::pmt_t which_port,
+                                        std::string& handler_name) = 0;
 
 protected:
-    typedef std::map<pmt::pmt_t, feval_p*, pmt::comparator> msg_handlers_feval_t;
-    msg_handlers_feval_t d_msg_handlers_feval;
-
-    bool has_msg_handler(pmt::pmt_t which_port)
-    {
-        if (d_msg_handlers_feval.find(which_port) != d_msg_handlers_feval.end()) {
-            return true;
-        } else {
-            return gr::basic_block::has_msg_handler(which_port);
-        }
-    }
-
-    void dispatch_msg(pmt::pmt_t which_port, pmt::pmt_t msg)
-    {
-        // Is there a handler?
-        if (d_msg_handlers_feval.find(which_port) != d_msg_handlers_feval.end()) {
-            d_msg_handlers_feval[which_port]->calleval(msg); // Yes, invoke it.
-        } else {
-            // Pass to generic dispatcher if not found
-            gr::basic_block::dispatch_msg(which_port, msg);
-        }
-    }
+    virtual bool has_msg_handler(pmt::pmt_t which_port) = 0;
+    virtual void dispatch_msg(pmt::pmt_t which_port, pmt::pmt_t msg) = 0;
 };
 
 } /* namespace gr */
diff --git a/gnuradio-runtime/include/gnuradio/feval.h b/gnuradio-runtime/include/gnuradio/feval.h
deleted file mode 100644
index 0148aea89c..0000000000
--- a/gnuradio-runtime/include/gnuradio/feval.h
+++ /dev/null
@@ -1,175 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2006,2013 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * SPDX-License-Identifier: GPL-3.0-or-later
- *
- */
-
-#ifndef INCLUDED_GR_FEVAL_H
-#define INCLUDED_GR_FEVAL_H
-
-#include <gnuradio/api.h>
-#include <gnuradio/gr_complex.h>
-#include <pmt/pmt.h>
-
-namespace gr {
-
-/*!
- * \brief base class for evaluating a function: double -> double
- * \ingroup misc
- *
- * This class is designed to be subclassed in Python or C++ and is
- * callable from both places. It uses SWIG's "director" feature to
- * implement the magic.
- *
- * It's slow. Don't use it in a performance critical path.
- *
- * Override eval to define the behavior.
- * Use calleval to invoke eval (this kludge is required to allow a
- * python specific "shim" to be inserted.
- */
-class GR_RUNTIME_API feval_dd
-{
-protected:
-    /*!
-     * \brief override this to define the function
-     */
-    virtual double eval(double x);
-
-public:
-    feval_dd() {}
-    virtual ~feval_dd();
-
-    virtual double calleval(double x); // invoke "eval"
-};
-
-/*!
- * \brief base class for evaluating a function: complex -> complex
- * \ingroup misc
- *
- * This class is designed to be subclassed in Python or C++ and is
- * callable from both places. It uses SWIG's "director" feature to
- * implement the magic.
- *
- * It's slow. Don't use it in a performance critical path.
- *
- * Override eval to define the behavior.
- * Use calleval to invoke eval (this kludge is required to allow a
- * python specific "shim" to be inserted.
- */
-class GR_RUNTIME_API feval_cc
-{
-protected:
-    /*!
-     * \brief override this to define the function
-     */
-    virtual gr_complex eval(gr_complex x);
-
-public:
-    feval_cc() {}
-    virtual ~feval_cc();
-
-    virtual gr_complex calleval(gr_complex x); // invoke "eval"
-};
-
-/*!
- * \brief base class for evaluating a function: long -> long
- * \ingroup misc
- *
- * This class is designed to be subclassed in Python or C++ and is
- * callable from both places. It uses SWIG's "director" feature to
- * implement the magic.
- *
- * It's slow. Don't use it in a performance critical path.
- *
- * Override eval to define the behavior.
- * Use calleval to invoke eval (this kludge is required to allow a
- * python specific "shim" to be inserted.
- */
-class GR_RUNTIME_API feval_ll
-{
-protected:
-    /*!
-     * \brief override this to define the function
-     */
-    virtual long eval(long x);
-
-public:
-    feval_ll() {}
-    virtual ~feval_ll();
-
-    virtual long calleval(long x); // invoke "eval"
-};
-
-/*!
- * \brief base class for evaluating a function: void -> void
- * \ingroup misc
- *
- * This class is designed to be subclassed in Python or C++ and is
- * callable from both places. It uses SWIG's "director" feature to
- * implement the magic.
- *
- * It's slow. Don't use it in a performance critical path.
- *
- * Override eval to define the behavior.
- * Use calleval to invoke eval (this kludge is required to allow a
- * python specific "shim" to be inserted.
- */
-class GR_RUNTIME_API feval
-{
-protected:
-    /*!
-     * \brief override this to define the function
-     */
-    virtual void eval();
-
-public:
-    feval() {}
-    virtual ~feval();
-
-    virtual void calleval(); // invoke "eval"
-};
-
-/*!
- * \brief base class for evaluating a function: pmt -> void
- * \ingroup misc
- *
- * This class is designed to be subclassed in Python or C++ and is
- * callable from both places. It uses SWIG's "director" feature to
- * implement the magic.
- *
- * It's slow. Don't use it in a performance critical path.
- *
- * Override eval to define the behavior.
- * Use calleval to invoke eval (this kludge is required to allow a
- * python specific "shim" to be inserted.
- */
-class GR_RUNTIME_API feval_p
-{
-protected:
-    /*!
-     * \brief override this to define the function
-     */
-    virtual void eval(pmt::pmt_t x);
-
-public:
-    feval_p() {}
-    virtual ~feval_p();
-
-    virtual void calleval(pmt::pmt_t x); // invoke "eval"
-};
-
-/*!
- * \brief trivial examples / test cases showing C++ calling Python code
- */
-GR_RUNTIME_API double feval_dd_example(feval_dd* f, double x);
-GR_RUNTIME_API gr_complex feval_cc_example(feval_cc* f, gr_complex x);
-GR_RUNTIME_API long feval_ll_example(feval_ll* f, long x);
-GR_RUNTIME_API void feval_example(feval* f);
-
-} /* namespace gr */
-
-#endif /* INCLUDED_GR_FEVAL_H */
diff --git a/gnuradio-runtime/include/gnuradio/logger.h b/gnuradio-runtime/include/gnuradio/logger.h
index f2d053c084..2fa0bd6eef 100644
--- a/gnuradio-runtime/include/gnuradio/logger.h
+++ b/gnuradio-runtime/include/gnuradio/logger.h
@@ -352,13 +352,12 @@ private:
 
     void set_config4rpc(std::string set) { printf("Set string was:%s\n", set.c_str()); }
 
-    /*! \brief destructor stops watch thread before exits */
-    ~logger_config() { stop_watch(); }
-
     /*! \brief Instance getter for singleton. Only used by class. */
     static logger_config& get_instance(void);
 
 public:
+    /*! \brief destructor stops watch thread before exits */
+    ~logger_config() { stop_watch(); }
     /*! \brief Getter for config filename */
     static std::string get_filename();
     /*! \brief Getter for watch period */
diff --git a/gnuradio-runtime/include/gnuradio/py_feval.h b/gnuradio-runtime/include/gnuradio/py_feval.h
deleted file mode 100644
index 50af37ec03..0000000000
--- a/gnuradio-runtime/include/gnuradio/py_feval.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2006,2013 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * SPDX-License-Identifier: GPL-3.0-or-later
- *
- */
-
-#ifndef INCLUDED_GR_PY_FEVAL_H
-#define INCLUDED_GR_PY_FEVAL_H
-
-#include <gnuradio/feval.h>
-#include <Python.h>
-#include <pmt/pmt.h>
-
-class ensure_py_gil_state
-{
-    PyGILState_STATE d_gstate;
-
-public:
-    ensure_py_gil_state() { d_gstate = PyGILState_Ensure(); }
-    ~ensure_py_gil_state() { PyGILState_Release(d_gstate); }
-};
-
-namespace gr {
-
-class GR_RUNTIME_API py_feval_dd : public feval_dd
-{
-public:
-    double calleval(double x)
-    {
-        ensure_py_gil_state _lock;
-        return eval(x);
-    }
-    virtual ~py_feval_dd(){};
-};
-
-class GR_RUNTIME_API py_feval_cc : public feval_cc
-{
-public:
-    gr_complex calleval(gr_complex x)
-    {
-        ensure_py_gil_state _lock;
-        return eval(x);
-    }
-    virtual ~py_feval_cc(){};
-};
-
-class GR_RUNTIME_API py_feval_ll : public feval_ll
-{
-public:
-    long calleval(long x)
-    {
-        ensure_py_gil_state _lock;
-        return eval(x);
-    }
-    virtual ~py_feval_ll(){};
-};
-
-class GR_RUNTIME_API py_feval : public feval
-{
-public:
-    void calleval()
-    {
-        ensure_py_gil_state _lock;
-        eval();
-    }
-    virtual ~py_feval(){};
-};
-
-class GR_RUNTIME_API py_feval_p : public feval_p
-{
-public:
-    void calleval(pmt::pmt_t x)
-    {
-        ensure_py_gil_state _lock;
-        eval(x);
-    }
-    virtual ~py_feval_p(){};
-};
-
-} /* namespace gr */
-
-#endif /* INCLUDED_GR_PY_FEVAL_H */
diff --git a/gnuradio-runtime/include/pmt/pmt.h b/gnuradio-runtime/include/pmt/pmt.h
index 079e466898..a977a23eaa 100644
--- a/gnuradio-runtime/include/pmt/pmt.h
+++ b/gnuradio-runtime/include/pmt/pmt.h
@@ -41,11 +41,12 @@ namespace pmt {
 /*!
  * \brief base class of all pmt types
  */
-class pmt_base : boost::noncopyable
+class PMT_API pmt_base
 {
 
 public:
     pmt_base(){};
+    pmt_base(const pmt_base&) = delete;
     virtual ~pmt_base();
 
     virtual bool is_bool() const { return false; }