136 lines
4.1 KiB
C++
136 lines
4.1 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 "Transition.hh"
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#include "SearchClass.hh"
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#include "Sdc.hh"
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#include "Path.hh"
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namespace sta {
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class Path;
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class ClkInfo
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{
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public:
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ClkInfo(const ClockEdge *clk_edge,
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const Pin *clk_src,
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bool is_propagated,
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const Pin *gen_clk_src,
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bool is_gen_clk_src_path,
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const RiseFall *pulse_clk_sense,
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Arrival insertion,
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float latency,
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ClockUncertainties *uncertainties,
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PathAPIndex path_ap_index,
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const Path *crpr_clk_path,
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const StaState *sta);
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~ClkInfo();
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std::string to_string(const StaState *sta) const;
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const ClockEdge *clkEdge() const { return clk_edge_; }
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const Clock *clock() const;
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const Pin *clkSrc() const { return clk_src_; }
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bool isPropagated() const { return is_propagated_; }
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const Pin *genClkSrc() const { return gen_clk_src_; }
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bool isPulseClk() const { return is_pulse_clk_; }
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const RiseFall *pulseClkSense() const;
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int pulseClkSenseRfIndex() const { return pulse_clk_sense_; }
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float latency() const { return latency_; }
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Arrival &insertion() { return insertion_; }
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const Arrival &insertion() const { return insertion_; }
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ClockUncertainties *uncertainties() const { return uncertainties_; }
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PathAPIndex pathAPIndex() const { return path_ap_index_; }
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// Clock path used for crpr resolution.
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// Null for clocks because the path cannot point to itself.
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Path *crprClkPath(const StaState *sta);
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const Path *crprClkPath(const StaState *sta) const;
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VertexId crprClkVertexId(const StaState *sta) const;
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bool hasCrprClkPin() const { return !crpr_clk_path_.isNull(); }
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// This clk_info/tag is used for a generated clock source path.
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bool isGenClkSrcPath() const { return is_gen_clk_src_path_; }
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size_t hash() const { return hash_; }
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bool crprPathRefsFilter() const { return crpr_path_refs_filter_; }
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const Path *crprClkPathRaw() const;
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static int cmp(const ClkInfo *clk_info1,
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const ClkInfo *clk_info2,
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const StaState *sta);
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static bool equal(const ClkInfo *clk_info1,
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const ClkInfo *clk_info2,
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const StaState *sta);
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protected:
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void findHash(const StaState *sta);
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private:
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const ClockEdge *clk_edge_;
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const Pin *clk_src_;
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const Pin *gen_clk_src_;
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Path crpr_clk_path_;
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ClockUncertainties *uncertainties_;
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Arrival insertion_;
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float latency_;
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size_t hash_;
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bool is_propagated_:1;
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bool is_gen_clk_src_path_:1;
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// This is used to break a circular dependency in Search::deleteFilteredArrival
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// between tags and clk infos that reference a filter.
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bool crpr_path_refs_filter_:1;
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bool is_pulse_clk_:1;
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unsigned int pulse_clk_sense_:RiseFall::index_bit_count;
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unsigned int path_ap_index_:path_ap_index_bit_count;
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};
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class ClkInfoLess
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{
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public:
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explicit ClkInfoLess(const StaState *sta);
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~ClkInfoLess() {}
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bool operator()(const ClkInfo *clk_info1,
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const ClkInfo *clk_info2) const;
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protected:
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const StaState *sta_;
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};
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class ClkInfoHash
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{
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public:
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size_t operator()(const ClkInfo *clk_info) const;
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};
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class ClkInfoEqual
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{
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public:
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ClkInfoEqual(const StaState *sta);
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bool operator()(const ClkInfo *clk_info1,
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const ClkInfo *clk_info2) 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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