55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
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// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2018, 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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#ifndef STA_RC_DELAY_CALC_H
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#define STA_RC_DELAY_CALC_H
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#include "LumpedCapDelayCalc.hh"
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namespace sta {
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// Base class for delay calculators with RC wire delay.
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class RCDelayCalc : public LumpedCapDelayCalc
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{
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public:
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RCDelayCalc(StaState *sta);
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virtual ArcDelayCalc *copy();
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virtual void findParasitic(const Pin *drvr_pin,
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const TransRiseFall *tr,
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const DcalcAnalysisPt *dcalc_ap,
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// Return values.
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Parasitic *¶sitic,
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bool &delete_at_finish);
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virtual void inputPortDelay(const Pin *port_pin,
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float in_slew,
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const TransRiseFall *tr,
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Parasitic *parasitic,
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const DcalcAnalysisPt *dcalc_ap);
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protected:
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// Helper function for input ports driving dspf parasitic.
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void dspfWireDelaySlew(const Pin *load_pin,
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float elmore,
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ArcDelay &wire_delay,
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Slew &load_slew);
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const LibertyCell *drvr_cell_;
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Parasitic *drvr_parasitic_;
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};
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} // namespace
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#endif
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