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    VCS 定制改写：覆盖率声明、数组录制、显式时间与资源追踪

    环境：VCS W-2024.09-SP2-8。1.2 使用 uvm-1.2，2.0 使用 uvm-ieee-2020-2.0。

    实验检查观察值是否符合预期；成功复现问题不代表问题已修复。

    结果对比

    本组配置：+UVM_RESOURCE_DB_TRACE

    观察内容 UVM 1.2 UVM 2.0
    构造后同时支持所声明的两种覆盖率（1=是） vendor_bank_has 1 1
    FIELD_VALS 与 REG_BITS 是否开启（1=开启） vendor_bank_enabled 1:0 1:0
    记录项数、值之和、最后字段名称 vendor_record_fields 2:33:data[1] 2:33:data[1]
    显式传入的整数时间读回值（time 单位） vendor_record_time 7 7
    显式开启后的 Resource DB 追踪状态（1=开启） vendor_resource_trace 1 1

    运行命令

    目录与环境准备；从解包根目录执行：

    1
    uv run tools/run_uvm_review.py --case vendor_migration_probe --variants 12,20 --plusarg +UVM_RESOURCE_DB_TRACE

    最小源码

    vendor_migration_probe.sv

    vendor_migration_probe.sv 
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    `timescale 1ns/1ps
`include "uvm_macros.svh"
import uvm_pkg::*;

class bounded_record_item extends uvm_object;
  int data[] = '{11, 22, 33, 44};
  int unsigned record_limit = 2;
  function new(string name = "bounded_record_item"); super.new(name); endfunction
  // data is deliberately not registered with a uvm_field_* macro.
  function void do_record(uvm_recorder recorder);
    super.do_record(recorder);
    foreach (data[i]) begin
      if (i >= record_limit) break;
      recorder.record_field_int($sformatf("data[%0d]", i), data[i], 32, UVM_DEC);
    end
  endfunction
endclass

class count_text_recorder extends uvm_text_recorder;
  int fields;
  int sum;
  string last_name;
  function new(string name = "count_text_recorder"); super.new(name); endfunction
  protected virtual function void do_record_field_int(string name, uvm_integral_t value,
                                                      int size, uvm_radix_enum radix);
    fields++;
    sum += value;
    last_name = name;
    super.do_record_field_int(name, value, size, radix);
  endfunction
endclass

module vendor_migration_probe;
  initial begin
    uvm_reg_cvr_t supported = UVM_CVR_REG_BITS | UVM_CVR_FIELD_VALS;
    snps_uvm_reg_bank_group bank = new("bank", null, supported);
    bounded_record_item item = new();
    count_text_recorder counter = new();
    uvm_text_tr_database db = new("db");
    uvm_tr_stream stream;
    uvm_recorder recorder;
    #1;
    $display("REVIEW|vendor_bank_has|%0d", bank.has_coverage(supported));
    void'(bank.set_coverage(UVM_CVR_FIELD_VALS));
    $display("REVIEW|vendor_bank_enabled|%0d:%0d", bank.get_coverage(UVM_CVR_FIELD_VALS), bank.get_coverage(UVM_CVR_REG_BITS));
    stream = db.open_stream("stream", "scope", "type");
    counter.m_do_open(stream, 7, "type");
    item.record(counter);
    $display("REVIEW|vendor_record_fields|%0d:%0d:%s", counter.fields, counter.sum, counter.last_name);
    counter.close();
    counter.free();
    recorder = stream.open_recorder("explicit_time", 7, "type");
    $display("REVIEW|vendor_record_time|%0d", recorder.get_open_time());
    recorder.close();
    recorder.free();
    stream.close();
    stream.free();
    void'(db.close_db());
    $display("REVIEW|vendor_resource_trace|%0d", uvm_resource_db_options::is_tracing());
    $display("REVIEW|done|1");
  end
endmodule

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