diff options
Diffstat (limited to 'src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh')
-rw-r--r-- | src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh new file mode 100644 index 000000000..31175ac41 --- /dev/null +++ b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh @@ -0,0 +1,80 @@ +/***************************************************************************** + + Licensed to Accellera Systems Initiative Inc. (Accellera) under one or + more contributor license agreements. See the NOTICE file distributed + with this work for additional information regarding copyright ownership. + Accellera licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with the + License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied. See the License for the specific language governing + permissions and limitations under the License. + + *****************************************************************************/ + +#ifndef __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ +#define __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ + +// Resize interface. +namespace tlm +{ + +template <typename T> +inline void +tlm_fifo<T>::nb_expand(unsigned int n) +{ + if (m_size >= 0) { + m_expand = true; + m_size += n; + request_update(); + } +} + +template <typename T> +inline void +tlm_fifo<T>::nb_unbound(unsigned int n) +{ + m_expand = true; + m_size = -n; + + if (buffer.size() < static_cast<int>(n)) { + buffer.resize(n); + } + + request_update(); +} + +template <typename T> +inline bool +tlm_fifo<T>::nb_reduce(unsigned int n) +{ + if (m_size < 0) { + return false; + } + + return nb_bound(size() - n); +} + +template <typename T> +inline bool +tlm_fifo<T>::nb_bound(unsigned int new_size) +{ + bool ret = true; + + if (static_cast<int>(new_size) < used()) { + new_size = used(); + ret = false; + } + + m_size = new_size; + return ret; +} + +} // namespace tlm + +#endif /* __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ */ |