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Martin Whitaker
ac87138c44
Normally there is at most one signal attached to a vvp functor, but due to port collapsing, there can be more than one. If these signals are array words, we need to trigger vpi callbacks on all the associated arrays when the functor value changes.
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
#ifndef IVL_vvp_vpi_callback_H
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#define IVL_vvp_vpi_callback_H
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/*
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* Copyright (c) 2009-2014 Stephen Williams ([email protected])
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "config.h"
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# include "vpi_user.h"
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class value_callback;
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/*
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* Things derived from vvp_vpi_callback may have callbacks
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* attached. This is how vpi callbacks are attached to the vvp
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* structure.
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*
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* Things derived from vvp_vpi_callback may also be array'ed, so it
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* includes some members that arrays use.
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*/
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class vvp_vpi_callback {
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public:
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vvp_vpi_callback();
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virtual ~vvp_vpi_callback();
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void attach_as_word(struct __vpiArray* arr, unsigned long addr);
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void add_vpi_callback(value_callback*);
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#ifdef CHECK_WITH_VALGRIND
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/* This has only been tested at EOS. */
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void clear_all_callbacks(void);
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#endif
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// Derived classes implement this method to provide a way for
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// vpi to get at the vvp value of the object.
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virtual void get_value(struct t_vpi_value*value) =0;
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protected:
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// Derived classes call this method to indicate that it is
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// time to call the callback.
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void run_vpi_callbacks();
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private:
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value_callback*vpi_callbacks_;
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struct __vpi_array_word*array_words_;
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};
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#endif /* IVL_vvp_vpi_callback_H */
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