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author | Tushar Krishna <tushar@ece.gatech.edu> | 2016-10-06 14:35:22 -0400 |
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committer | Tushar Krishna <tushar@ece.gatech.edu> | 2016-10-06 14:35:22 -0400 |
commit | dbe8892b761067c5c1e828f889a513ea085b044f (patch) | |
tree | d3101cc8dbf74f1d3bc2f3f9ead1b948fd4ac33e /src/mem/ruby/network/garnet2.0/flitBuffer.hh | |
parent | b512f4bf71fac79fb6e17bb2a9e05c1f494f69f4 (diff) | |
download | gem5-dbe8892b761067c5c1e828f889a513ea085b044f.tar.xz |
ruby: garnet2.0
Revamped version of garnet with more optimized single-cycle routers,
more configurability, and cleaner code.
Diffstat (limited to 'src/mem/ruby/network/garnet2.0/flitBuffer.hh')
-rw-r--r-- | src/mem/ruby/network/garnet2.0/flitBuffer.hh | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet2.0/flitBuffer.hh b/src/mem/ruby/network/garnet2.0/flitBuffer.hh new file mode 100644 index 000000000..eb6ad6167 --- /dev/null +++ b/src/mem/ruby/network/garnet2.0/flitBuffer.hh @@ -0,0 +1,93 @@ +/* + * Copyright (c) 2008 Princeton University + * Copyright (c) 2016 Georgia Institute of Technology + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Niket Agarwal + * Tushar Krishna + */ + + +#ifndef __MEM_RUBY_NETWORK_GARNET_FLIT_BUFFER_HH__ +#define __MEM_RUBY_NETWORK_GARNET_FLIT_BUFFER_HH__ + +#include <algorithm> +#include <iostream> +#include <vector> + +#include "mem/ruby/network/garnet2.0/CommonTypes.hh" +#include "mem/ruby/network/garnet2.0/flit.hh" + +class flitBuffer +{ + public: + flitBuffer(); + flitBuffer(int maximum_size); + + bool isReady(Cycles curTime); + bool isEmpty(); + void print(std::ostream& out) const; + bool isFull(); + void setMaxSize(int maximum); + + flit * + getTopFlit() + { + flit *f = m_buffer.front(); + std::pop_heap(m_buffer.begin(), m_buffer.end(), flit::greater); + m_buffer.pop_back(); + return f; + } + + flit * + peekTopFlit() + { + return m_buffer.front(); + } + + void + insert(flit *flt) + { + m_buffer.push_back(flt); + std::push_heap(m_buffer.begin(), m_buffer.end(), flit::greater); + } + + uint32_t functionalWrite(Packet *pkt); + + private: + std::vector<flit *> m_buffer; + int max_size; +}; + +inline std::ostream& +operator<<(std::ostream& out, const flitBuffer& obj) +{ + obj.print(out); + out << std::flush; + return out; +} + +#endif // __MEM_RUBY_NETWORK_GARNET_FLIT_BUFFER_HH__ |