diff options
Diffstat (limited to 'src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/circular_buffer.h')
| -rw-r--r-- | src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/circular_buffer.h | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/circular_buffer.h b/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/circular_buffer.h deleted file mode 100644 index c00fe4881..000000000 --- a/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/circular_buffer.h +++ /dev/null @@ -1,255 +0,0 @@ -/***************************************************************************** - - 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_TLM_1_TLM_REQ_RSP_TLM_CHANNELS_TLM_FIFO_CIRCULAR_BUFFER_H__ -#define \ - __TLM_CORE_TLM_1_TLM_REQ_RSP_TLM_CHANNELS_TLM_FIFO_CIRCULAR_BUFFER_H__ - -#include <iostream> - -namespace tlm -{ - -template <typename T> -class circular_buffer -{ - public: - explicit circular_buffer(int size=0); - ~circular_buffer(); - - void resize(int size); - void clear(); - - T read(); - void write(const T &); - - bool is_empty() const { return used() == 0; } - bool is_full() const { return free() == 0; } - - int size() const { return m_size; } - int used() const { return m_used; } - int free() const { return m_free; } - - const T &read_data() const { return buf_read(m_buf, m_ri); } - const T & - peek_data(int i) const - { - return buf_read(m_buf, (m_ri + i) % size()); - } - - T & - poke_data(int i) - { - return buf_read(m_buf, (m_wi + i) % size()); - } - - void debug() const; - - private: - void increment_write_pos(int i=1); - void increment_read_pos(int i=1); - - void init(); - - // Disabled. - circular_buffer(const circular_buffer<T> &b); - circular_buffer<T> &operator = (const circular_buffer<T> &); - - void *buf_alloc(int size); - void buf_free(void *&buf); - void buf_write(void *buf, int n, const T &t); - T &buf_read(void *buf, int n) const; - void buf_clear(void *buf, int n); - - private: - int m_size; // size of the buffer - void *m_buf; // the buffer - int m_free; // number of free spaces - int m_used; // number of used spaces - int m_ri; // index of next read - int m_wi; // index of next write -}; - -template <typename T> -void -circular_buffer<T>::debug() const -{ - std::cout << "Buffer debug" << std::endl; - std::cout << "Size : " << size() << std::endl; - std::cout << "Free/Used " << free() << "/" << used() << std::endl; - std::cout << "Indices : r/w = " << m_ri << "/" << m_wi << std::endl; - - if (is_empty()) { - std::cout << "empty" << std::endl; - } - - if (is_full()) { - std::cout << "full" << std::endl; - } - - std::cout << "Data : " << std::endl; - for (int i = 0; i < used(); i++) { - std::cout << peek_data( i ) << std::endl; - } -} - -template <typename T> -circular_buffer<T>::circular_buffer(int size) : m_size(size), m_buf(0) -{ - init(); -} - -template <typename T> -void -circular_buffer<T>::clear() -{ - for (int i = 0; i < used(); i++) { - buf_clear(m_buf, (m_ri + i) % m_size); - } - m_free = m_size; - m_used = m_ri = m_wi = 0; -} - -template <typename T> -circular_buffer<T>::~circular_buffer() -{ - clear(); - buf_free(m_buf); -} - -template <typename T> -void -circular_buffer<T>::resize(int size) -{ - int i; - void *new_buf = buf_alloc(size); - - for (i = 0; i < size && i < used(); i++) { - buf_write(new_buf, i, peek_data(i)); - buf_clear(m_buf, (m_ri + i) % m_size); - } - - buf_free(m_buf); - - m_size = size; - m_ri = 0; - m_wi = i % m_size; - m_used = i; - m_free = m_size - m_used; - - m_buf = new_buf; -} - - -template <typename T> -void -circular_buffer<T>::init() -{ - if (m_size > 0) { - m_buf = buf_alloc(m_size); - } - - m_free = m_size; - m_used = 0; - m_ri = 0; - m_wi = 0; -} - -template <typename T> -T -circular_buffer<T>::read() -{ - T t = read_data(); - - buf_clear(m_buf, m_ri); - increment_read_pos(); - - return t; -} - -template <typename T> -void -circular_buffer<T>::write(const T &t) -{ - buf_write(m_buf, m_wi, t); - increment_write_pos(); -} - -template <typename T> -void -circular_buffer<T>::increment_write_pos(int i) -{ - m_wi = (m_wi + i) % m_size; - m_used += i; - m_free -= i; -} - -template <typename T> -void -circular_buffer<T>::increment_read_pos(int i) -{ - m_ri = (m_ri + i) % m_size; - m_used -= i; - m_free += i; -} - -template <typename T> -inline void * -circular_buffer<T>::buf_alloc(int size) -{ - return new unsigned char [size * sizeof(T)]; -} - -template <typename T> -inline void -circular_buffer<T>::buf_free(void *&buf) -{ - delete [] static_cast<unsigned char *>(buf); - buf = nullptr; -} - -template <typename T> -inline void -circular_buffer<T>::buf_write(void *buf, int n, const T &t) -{ - T *p = static_cast<T *>(buf) + n; - new (p)T(t); -} - -template <typename T> -inline T & -circular_buffer<T>::buf_read(void *buf, int n) const -{ - T *p = static_cast<T *>(buf) + n; - return *p; -} - -template <typename T> -inline void -circular_buffer<T>::buf_clear(void *buf, int n) -{ - T *p = static_cast<T *>(buf) + n; - p->~T(); -} - -} // namespace tlm - -#endif -/* __TLM_CORE_TLM_1_TLM_REQ_RSP_TLM_CHANNELS_TLM_FIFO_CIRCULAR_BUFFER_H__ */ |