2015-03-06 15:34:42 +00:00
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#include <DB/IO/WriteBufferAIO.h>
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#include <iostream>
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#include <fstream>
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#include <streambuf>
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#include <cstdlib>
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static const std::string source = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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void die(const std::string & msg)
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{
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std::cout << msg;
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::exit(EXIT_FAILURE);
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}
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int main()
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{
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bool ok;
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try
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{
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// Create temporary directory and file inside it.
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char pattern[] = "/tmp/fileXXXXXX";
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char * dir = ::mkdtemp(pattern);
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if (dir == nullptr)
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die("Could not create directory");
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const std::string filename = std::string(dir) + "/foo";
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// Create data.
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std::string buf;
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2015-03-06 16:16:10 +00:00
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buf.reserve(10 * DB::WriteBufferAIO::BLOCK_SIZE);
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for (size_t i = 0; i < (10 * DB::WriteBufferAIO::BLOCK_SIZE); ++i)
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2015-03-06 15:34:42 +00:00
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{
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buf.append(1, source[i % source.length()]);
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}
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// Write data.
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{
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2015-03-06 16:16:10 +00:00
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DB::WriteBufferAIO out(filename, 3 * DB::WriteBufferAIO::BLOCK_SIZE);
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2015-03-06 15:34:42 +00:00
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out.write(&buf[0], buf.length());
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}
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// Read data synchronously.
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std::ifstream in(filename.c_str());
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if (!in.is_open())
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die("Could not open file");
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std::string received{ std::istreambuf_iterator<char>(in), std::istreambuf_iterator<char>() };
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ok = (received == buf);
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}
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catch (const DB::Exception & ex)
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{
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ok = false;
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std::cout << "Caught exception " << ex.displayText() << "\n";
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}
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catch (const std::exception & ex)
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{
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ok = false;
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std::cout << "Caught exception " << ex.what() << "\n";
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}
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if (ok)
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std::cout << "Test passed\n";
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else
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std::cout << "Test failed\n";
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return 0;
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}
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