102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/*
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* \brief Block session testing - ping pong test
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* \author Josef Soentgen
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* \date 2016-07-04
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*/
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/*
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* Copyright (C) 2016-2018 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _TEST_PING_PONG_H_
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#define _TEST_PING_PONG_H_
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namespace Test { struct Ping_pong; }
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/*
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* Ping_pong operation test
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*
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* This test reads or writes the given number of blocks from the
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* specified start block sequentially in sized requests.
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*/
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struct Test::Ping_pong : Test_base
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{
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bool _ping = true;
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block_number_t _end = 0;
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block_number_t _start = _node.attribute_value("start", 0u);
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size_t const _size = _node.attribute_value("size", Number_of_bytes());
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size_t const _length = _node.attribute_value("length", Number_of_bytes());
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Block::Operation::Type const _op_type = _node.attribute_value("write", false)
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? Block::Operation::Type::WRITE
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: Block::Operation::Type::READ;
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using Test_base::Test_base;
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void _spawn_job() override
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{
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if (_bytes >= _length)
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return;
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_job_cnt++;
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block_number_t const lba = _ping ? _start : _end - _start;
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_ping = !_ping;
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Block::Operation const operation { .type = _op_type,
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.block_number = lba,
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.count = _size_in_blocks };
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new (_alloc) Job(*_block, operation, _job_cnt);
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_start += _size_in_blocks;
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}
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void _init() override
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{
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if (_size > _scratch_buffer.size) {
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error("request size exceeds scratch buffer size");
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throw Constructing_test_failed();
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}
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size_t const total_bytes = _info.block_count * _info.block_size;
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if (_length > total_bytes - (_start * _info.block_size)) {
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error("length too large invalid");
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throw Constructing_test_failed();
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}
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if (_info.block_size > _size || (_size % _info.block_size) != 0) {
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error("request size invalid");
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throw Constructing_test_failed();
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}
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_size_in_blocks = _size / _info.block_size;
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_length_in_blocks = _length / _info.block_size;
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_end = _start + _length_in_blocks;
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}
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Result result() override
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{
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return Result(_success, _end_time - _start_time,
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_bytes, _rx, _tx, _size, _info.block_size, _triggered);
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}
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char const *name() const override { return "ping_pong"; }
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void print(Output &out) const override
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{
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Genode::print(out, name(), " ", Block::Operation::type_name(_op_type), " "
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"start:", _start, " "
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"size:", _size, " "
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"length:", _length, " "
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"copy:", _copy, " "
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"batch:", _batch);
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}
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};
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#endif /* _TEST_PING_PONG_H_ */
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