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Diffstat (limited to 'src/intersim2/.svn/pristine/72')
| -rw-r--r-- | src/intersim2/.svn/pristine/72/72bdb07d5ae6b1010a5ae388c45b5fbe2d549f92.svn-base | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/src/intersim2/.svn/pristine/72/72bdb07d5ae6b1010a5ae388c45b5fbe2d549f92.svn-base b/src/intersim2/.svn/pristine/72/72bdb07d5ae6b1010a5ae388c45b5fbe2d549f92.svn-base deleted file mode 100644 index 8b1f029..0000000 --- a/src/intersim2/.svn/pristine/72/72bdb07d5ae6b1010a5ae388c45b5fbe2d549f92.svn-base +++ /dev/null @@ -1,75 +0,0 @@ -// $Id$ - -/* - Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior University - 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. - - 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. -*/ - -// ---------------------------------------------------------------------- -// -// RoundRobin: Round Robin Arbiter -// -// ---------------------------------------------------------------------- - -#ifndef _ROUNDROBIN_HPP_ -#define _ROUNDROBIN_HPP_ - -#include "arbiter.hpp" - -class RoundRobinArbiter : public Arbiter { - - // Priority pointer - int _pointer ; - -public: - - // Constructors - RoundRobinArbiter( Module *parent, const string &name, int size ) ; - - // Print priority matrix to standard output - virtual void PrintState() const ; - - // Update priority matrix based on last aribtration result - virtual void UpdateState() ; - - // Arbitrate amongst requests. Returns winning input and - // updates pointers to metadata when valid pointers are passed - virtual int Arbitrate( int* id = 0, int* pri = 0) ; - - virtual void AddRequest( int input, int id, int pri ) ; - - virtual void Clear(); - - static inline bool Supersedes(int input1, int pri1, int input2, int pri2, int offset, int size) - { - // in a round-robin scheme with the given number of positions and current - // offset, should a request at input1 with priority pri1 supersede a - // request at input2 with priority pri2? - return ((pri1 > pri2) || - ((pri1 == pri2) && - (((input1 - offset + size) % size) < ((input2 - offset + size) % size)))); - } - -} ; - -#endif |
