fifo_resize.hh revision 13521
113521Sgabeblack@google.com/***************************************************************************** 213521Sgabeblack@google.com 313521Sgabeblack@google.com Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 413521Sgabeblack@google.com more contributor license agreements. See the NOTICE file distributed 513521Sgabeblack@google.com with this work for additional information regarding copyright ownership. 613521Sgabeblack@google.com Accellera licenses this file to you under the Apache License, Version 2.0 713521Sgabeblack@google.com (the "License"); you may not use this file except in compliance with the 813521Sgabeblack@google.com License. You may obtain a copy of the License at 913521Sgabeblack@google.com 1013521Sgabeblack@google.com http://www.apache.org/licenses/LICENSE-2.0 1113521Sgabeblack@google.com 1213521Sgabeblack@google.com Unless required by applicable law or agreed to in writing, software 1313521Sgabeblack@google.com distributed under the License is distributed on an "AS IS" BASIS, 1413521Sgabeblack@google.com WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 1513521Sgabeblack@google.com implied. See the License for the specific language governing 1613521Sgabeblack@google.com permissions and limitations under the License. 1713521Sgabeblack@google.com 1813521Sgabeblack@google.com *****************************************************************************/ 1913521Sgabeblack@google.com 2013521Sgabeblack@google.com#ifndef __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ 2113521Sgabeblack@google.com#define __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ 2213521Sgabeblack@google.com 2313521Sgabeblack@google.com// Resize interface. 2413521Sgabeblack@google.comnamespace tlm 2513521Sgabeblack@google.com{ 2613521Sgabeblack@google.com 2713521Sgabeblack@google.comtemplate <typename T> 2813521Sgabeblack@google.cominline void 2913521Sgabeblack@google.comtlm_fifo<T>::nb_expand(unsigned int n) 3013521Sgabeblack@google.com{ 3113521Sgabeblack@google.com if (m_size >= 0) { 3213521Sgabeblack@google.com m_expand = true; 3313521Sgabeblack@google.com m_size += n; 3413521Sgabeblack@google.com request_update(); 3513521Sgabeblack@google.com } 3613521Sgabeblack@google.com} 3713521Sgabeblack@google.com 3813521Sgabeblack@google.comtemplate <typename T> 3913521Sgabeblack@google.cominline void 4013521Sgabeblack@google.comtlm_fifo<T>::nb_unbound(unsigned int n) 4113521Sgabeblack@google.com{ 4213521Sgabeblack@google.com m_expand = true; 4313521Sgabeblack@google.com m_size = -n; 4413521Sgabeblack@google.com 4513521Sgabeblack@google.com if (buffer.size() < static_cast<int>(n)) { 4613521Sgabeblack@google.com buffer.resize(n); 4713521Sgabeblack@google.com } 4813521Sgabeblack@google.com 4913521Sgabeblack@google.com request_update(); 5013521Sgabeblack@google.com} 5113521Sgabeblack@google.com 5213521Sgabeblack@google.comtemplate <typename T> 5313521Sgabeblack@google.cominline bool 5413521Sgabeblack@google.comtlm_fifo<T>::nb_reduce(unsigned int n) 5513521Sgabeblack@google.com{ 5613521Sgabeblack@google.com if (m_size < 0) { 5713521Sgabeblack@google.com return false; 5813521Sgabeblack@google.com } 5913521Sgabeblack@google.com 6013521Sgabeblack@google.com return nb_bound(size() - n); 6113521Sgabeblack@google.com} 6213521Sgabeblack@google.com 6313521Sgabeblack@google.comtemplate <typename T> 6413521Sgabeblack@google.cominline bool 6513521Sgabeblack@google.comtlm_fifo<T>::nb_bound(unsigned int new_size) 6613521Sgabeblack@google.com{ 6713521Sgabeblack@google.com bool ret = true; 6813521Sgabeblack@google.com 6913521Sgabeblack@google.com if (static_cast<int>(new_size) < used()) { 7013521Sgabeblack@google.com new_size = used(); 7113521Sgabeblack@google.com ret = false; 7213521Sgabeblack@google.com } 7313521Sgabeblack@google.com 7413521Sgabeblack@google.com m_size = new_size; 7513521Sgabeblack@google.com return ret; 7613521Sgabeblack@google.com} 7713521Sgabeblack@google.com 7813521Sgabeblack@google.com} // namespace tlm 7913521Sgabeblack@google.com 8013521Sgabeblack@google.com#endif /* __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ */ 81