forked from github/verilator
66 lines
1.4 KiB
Systemverilog
66 lines
1.4 KiB
Systemverilog
// DESCRIPTION: Verilator: Verilog Test module
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//
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// This file ONLY is placed under the Creative Commons Public Domain, for
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// any use, without warranty, 2022 by Wilson Snyder.
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// SPDX-License-Identifier: CC0-1.0
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class mailbox_cls #(type T=int);
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// Test an implementation similar to what Verilator will do internally
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int m_bound;
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T m_q[$];
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function new(int bound = 0);
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m_bound = bound;
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endfunction
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function int num();
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return m_q.size();
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endfunction
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task put(T message);
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if (m_bound != 0) wait (m_q.size() < m_bound);
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m_q.push_back(message);
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endtask
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function int try_put(T message);
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if (m_bound != 0 && m_q.size() < m_bound) begin
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m_q.push_back(message);
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return 1;
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end
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else begin
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return 0;
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end
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endfunction
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task get(ref T message);
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wait (m_q.size() != 0);
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message = m_q.pop_front();
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endtask
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function int try_get(ref T message);
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if (m_q.size() != 0) begin
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message = m_q.pop_front();
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return 1;
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end
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else begin
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return 0;
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end
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endfunction
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task peek(ref T message);
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wait (m_q.size() != 0);
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message = m_q[0];
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endtask
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function int try_peek(ref T message);
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if (m_q.size() != 0) begin
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message = m_q[0];
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return 1;
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end
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else begin
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return 0;
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end
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endfunction
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endclass
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`define MAILBOX_T mailbox_cls
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`include "t_mailbox.v"
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