99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2025, Parallax Software, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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// The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software.
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//
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// Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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//
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// This notice may not be removed or altered from any source distribution.
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#pragma once
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#include <vector>
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#include "GraphClass.hh"
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#include "Delay.hh"
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#include "StaState.hh"
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#include "SearchClass.hh"
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#include "Path.hh"
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#include "MinMax.hh"
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namespace sta {
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class MaxSkewCheck
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{
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public:
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MaxSkewCheck();
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MaxSkewCheck(Path *clk_path,
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Path *ref_path,
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TimingArc *check_arc,
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Edge *check_edge);
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bool isNull() const { return clk_path_ == nullptr; }
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const Path *clkPath() const { return clk_path_; }
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Pin *clkPin(const StaState *sta) const;
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const Path *refPath() const { return ref_path_; }
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Pin *refPin(const StaState *sta) const;
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Delay skew() const;
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ArcDelay maxSkew(const StaState *sta) const;
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Slack slack(const StaState *sta) const;
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TimingArc *checkArc() const { return check_arc_; }
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private:
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Path *clk_path_;
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Path *ref_path_;
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TimingArc *check_arc_;
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Edge *check_edge_;
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};
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using MaxSkewCheckSeq = std::vector<MaxSkewCheck>;
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class CheckMaxSkews
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{
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public:
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CheckMaxSkews(StaState *sta);
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~CheckMaxSkews();
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void clear();
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// Return max skew checks.
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// net=null check all nets
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MaxSkewCheckSeq &check(const Net *net,
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size_t max_count,
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bool violators,
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const SceneSeq &scenes);
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protected:
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void check(Vertex *vertex,
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bool violators);
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SceneSet scenes_;
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MaxSkewCheckSeq checks_;
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StaState *sta_;
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};
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class MaxSkewSlackLess
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{
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public:
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MaxSkewSlackLess(const StaState *sta);
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bool operator()(const MaxSkewCheck &check1,
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const MaxSkewCheck &check2) const;
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protected:
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const StaState *sta_;
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};
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} // namespace
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