sc_buffer.hh revision 13205
112841Sgabeblack@google.com/* 212841Sgabeblack@google.com * Copyright 2018 Google, Inc. 312841Sgabeblack@google.com * 412841Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 512841Sgabeblack@google.com * modification, are permitted provided that the following conditions are 612841Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 712841Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 812841Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 912841Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1012841Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1112841Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1212841Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1312841Sgabeblack@google.com * this software without specific prior written permission. 1412841Sgabeblack@google.com * 1512841Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1612841Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1712841Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1812841Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1912841Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2012841Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2112841Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2212841Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2312841Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2412841Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2512841Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2612841Sgabeblack@google.com * 2712841Sgabeblack@google.com * Authors: Gabe Black 2812841Sgabeblack@google.com */ 2912841Sgabeblack@google.com 3012841Sgabeblack@google.com#ifndef __SYSTEMC_EXT_CHANNEL_SC_BUFFER_HH__ 3112841Sgabeblack@google.com#define __SYSTEMC_EXT_CHANNEL_SC_BUFFER_HH__ 3212841Sgabeblack@google.com 3312841Sgabeblack@google.com#include "../core/sc_module.hh" // for sc_gen_unique_name 3412841Sgabeblack@google.com#include "sc_signal.hh" 3512841Sgabeblack@google.com 3612841Sgabeblack@google.comnamespace sc_core 3712841Sgabeblack@google.com{ 3812841Sgabeblack@google.com 3912867Sgabeblack@google.com// Having a default value for the WRITER_POLICY parameter is non-standard, but 4012867Sgabeblack@google.com// matches the Accellera implementation to enable the regression tests. 4112867Sgabeblack@google.comtemplate <class T, sc_writer_policy WRITER_POLICY=SC_ONE_WRITER> 4212841Sgabeblack@google.comclass sc_buffer : public sc_signal<T, WRITER_POLICY> 4312841Sgabeblack@google.com{ 4412841Sgabeblack@google.com public: 4512841Sgabeblack@google.com sc_buffer() : sc_signal<T, WRITER_POLICY>(sc_gen_unique_name("buffer")) {} 4612841Sgabeblack@google.com explicit sc_buffer(const char *name) : 4712841Sgabeblack@google.com sc_signal<T, WRITER_POLICY>(sc_gen_unique_name(name)) 4812841Sgabeblack@google.com {} 4912841Sgabeblack@google.com 5012841Sgabeblack@google.com virtual void 5113205Sgabeblack@google.com write(const T &t) 5212841Sgabeblack@google.com { 5313205Sgabeblack@google.com this->m_new_val = t; 5413205Sgabeblack@google.com this->request_update(); 5512841Sgabeblack@google.com } 5612841Sgabeblack@google.com 5712841Sgabeblack@google.com sc_buffer<T, WRITER_POLICY> & 5813205Sgabeblack@google.com operator = (const T &arg) 5912841Sgabeblack@google.com { 6013205Sgabeblack@google.com write(arg); 6112841Sgabeblack@google.com return *this; 6212841Sgabeblack@google.com } 6312841Sgabeblack@google.com sc_buffer<T, WRITER_POLICY> & 6413205Sgabeblack@google.com operator = (const sc_signal<T, WRITER_POLICY> &arg) 6512841Sgabeblack@google.com { 6613205Sgabeblack@google.com write(arg.read()); 6712841Sgabeblack@google.com return *this; 6812841Sgabeblack@google.com } 6912841Sgabeblack@google.com sc_buffer<T, WRITER_POLICY> & 7013205Sgabeblack@google.com operator = (const sc_buffer<T, WRITER_POLICY> &arg) 7112841Sgabeblack@google.com { 7213205Sgabeblack@google.com write(arg.read()); 7312841Sgabeblack@google.com return *this; 7412841Sgabeblack@google.com } 7512841Sgabeblack@google.com 7612841Sgabeblack@google.com virtual const char *kind() const { return "sc_buffer"; } 7712841Sgabeblack@google.com 7812841Sgabeblack@google.com protected: 7912841Sgabeblack@google.com virtual void 8012841Sgabeblack@google.com update() 8112841Sgabeblack@google.com { 8213205Sgabeblack@google.com this->m_cur_val = this->m_new_val; 8313205Sgabeblack@google.com this->_signalChange(); 8412841Sgabeblack@google.com } 8512841Sgabeblack@google.com 8612841Sgabeblack@google.com private: 8712841Sgabeblack@google.com // Disabled 8812841Sgabeblack@google.com sc_buffer(const sc_buffer<T, WRITER_POLICY> &) {} 8912841Sgabeblack@google.com}; 9012841Sgabeblack@google.com 9112841Sgabeblack@google.com} // namespace sc_core 9212841Sgabeblack@google.com 9312841Sgabeblack@google.com#endif //__SYSTEMC_EXT_CHANNEL_SC_BUFFER_HH__ 94