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author | Korey Sewell <ksewell@umich.edu> | 2010-06-25 17:42:34 -0400 |
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committer | Korey Sewell <ksewell@umich.edu> | 2010-06-25 17:42:34 -0400 |
commit | 6bfd766f2c6c93cca3f79482bfddf7e6cdeb455e (patch) | |
tree | 615205f85b0bc87a4e6cf4ca57472a976a27c985 /src/cpu/inorder/resource_sked.hh | |
parent | 6697d416930a0464bea6ca211a1fdfa8a1e01135 (diff) | |
download | gem5-6bfd766f2c6c93cca3f79482bfddf7e6cdeb455e.tar.xz |
inorder: resource scheduling backend
replace priority queue with vector of lists(1 list per stage) and place inside a class
so that we have more control of when an instruction uses a particular schedule entry
...
also, this is the 1st step toward making the InOrderCPU fully parameterizable. See the
wiki for details on this process
Diffstat (limited to 'src/cpu/inorder/resource_sked.hh')
-rw-r--r-- | src/cpu/inorder/resource_sked.hh | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/cpu/inorder/resource_sked.hh b/src/cpu/inorder/resource_sked.hh new file mode 100644 index 000000000..22e29d728 --- /dev/null +++ b/src/cpu/inorder/resource_sked.hh @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2010 The Regents of The University of Michigan + * 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: Korey Sewell + * + */ + +#ifndef __CPU_INORDER_RESOURCE_SKED_HH__ +#define __CPU_INORDER_RESOURCE_SKED_HH__ + +#include <vector> +#include <list> + +class ScheduleEntry { + public: + ScheduleEntry(int stage_num, int _priority, int res_num, int _cmd = 0, + int _idx = 0) : + stageNum(stage_num), resNum(res_num), cmd(_cmd), + idx(_idx), priority(_priority) + { } + + // Stage number to perform this service. + int stageNum; + + // Resource ID to access + int resNum; + + // See specific resource for meaning + unsigned cmd; + + // See specific resource for meaning + unsigned idx; + + // Some Resources May Need Priority + int priority; +}; + +class ResourceSked { + public: + typedef std::list<ScheduleEntry*>::iterator SkedIt; + + ResourceSked(); + + void init(); + + int size(); + bool empty(); + ScheduleEntry* top(); + void pop(); + void push(ScheduleEntry* sked_entry); + void pushBefore(ScheduleEntry* sked_entry, int sked_cmd, int sked_cmd_idx); + void print(); + + private: + SkedIt curSkedEntry; + std::vector<std::list<ScheduleEntry*> > sked; + + SkedIt findIterByPriority(ScheduleEntry *sked_entry, int stage_num); + SkedIt findIterByCommand(ScheduleEntry *sked_entry, int stage_num, + int sked_cmd, int sked_cmd_idx = -1); +}; + +#endif //__CPU_INORDER_RESOURCE_SKED_HH__ |