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77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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// DESCRIPTION: Verilator: AstExecGraph code construction
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//
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// Code available from: https://verilator.org
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//
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//*************************************************************************
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//
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// Copyright 2003-2024 by Wilson Snyder. This program is free software; you
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// can redistribute it and/or modify it under the terms of either the GNU
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// Lesser General Public License Version 3 or the Perl Artistic License
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// Version 2.0.
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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//
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//*************************************************************************
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#ifndef VERILATOR_V3EXECGRAPH_H_
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#define VERILATOR_V3EXECGRAPH_H_
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#include "config_build.h"
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#include "verilatedos.h"
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#include "V3Graph.h"
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#include <atomic>
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class AstNetlist;
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class AstMTaskBody;
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//*************************************************************************
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// MTasks and graph structures
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class ExecMTask final : public V3GraphVertex {
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VL_RTTI_IMPL(ExecMTask, V3GraphVertex)
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private:
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AstMTaskBody* const m_bodyp; // Task body
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const uint32_t m_id; // Unique ID of this ExecMTask.
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static std::atomic<uint32_t> s_nextId; // Next ID to use
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const std::string m_hashName; // Hashed name based on body for profile-driven optimization
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// Predicted critical path from the start of this mtask to the ends of the graph that are
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// reachable from this mtask. In abstract time units.
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uint32_t m_priority = 0;
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// Predicted runtime of this mtask, in the same abstract time units as priority().
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uint32_t m_cost = 0;
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uint64_t m_predictStart = 0; // Predicted start time of task
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VL_UNCOPYABLE(ExecMTask);
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public:
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ExecMTask(V3Graph* graphp, AstMTaskBody* bodyp) VL_MT_DISABLED;
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AstMTaskBody* bodyp() const { return m_bodyp; }
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uint32_t id() const VL_MT_SAFE { return m_id; }
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uint32_t priority() const { return m_priority; }
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void priority(uint32_t pri) { m_priority = pri; }
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uint32_t cost() const { return m_cost; }
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void cost(uint32_t cost) { m_cost = cost; }
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uint64_t predictStart() const { return m_predictStart; }
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void predictStart(uint64_t time) { m_predictStart = time; }
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string name() const override VL_MT_STABLE { return "mt"s + std::to_string(id()); }
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string hashName() const { return m_hashName; }
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void dump(std::ostream& str) const;
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static uint32_t numUsedIds() VL_MT_SAFE { return s_nextId; }
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};
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inline std::ostream& operator<<(std::ostream& os, const ExecMTask& rhs) {
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rhs.dump(os);
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return os;
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}
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namespace V3ExecGraph {
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void implement(AstNetlist*) VL_MT_DISABLED;
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void selfTest() VL_MT_DISABLED;
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} //namespace V3ExecGraph
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#endif // Guard
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