1 |
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2 | #ifdef _MSC_VER
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3 | // Windows implementation
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4 | HANDLE hFile = CreateFile(_T("c:\\file.txt"), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
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5 |
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6 | #else
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7 | // assume Unix
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8 | // lock a file on linux
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9 | // [hs, 2 july 2010]
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10 | // - modified to create a locl file local to the collection [jmt12]
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11 | int lock ()
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12 | {
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13 | string file_path ("");
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14 | char *collect_dir = getenv ("GSDLCOLLECTDIR");
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15 | if (collect_dir != NULL)
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16 | {
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17 | file_path += collect_dir;
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18 | }
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19 | file_path += "/tmp";
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20 | if ( access( file_path.c_str(), 00 ) != 0 )
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21 | {
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22 | mkdir(file_path.c_str(), 00777);
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23 | }
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24 | file_path += "/gdb.lock";
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25 | ///out << "txt2dbl::lock(" << file_path << ") => ";
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26 | int fd2 = open (file_path.c_str(), O_CREAT|O_RDWR, 00644);
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27 | close (fd2);
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28 | int fd = open (file_path.c_str(), O_RDWR);
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29 | flock lock = {F_WRLCK, SEEK_SET, 0, 0, 0};
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30 | fcntl (fd, F_SETLKW, &lock);
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31 | ///out << "locked!" << endl;
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32 | return fd;
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33 | }
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34 |
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35 | // unlock a file on linux
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36 | // [hs, 2 july 2010]
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37 | int unlock ( int fd )
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38 | {
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39 | flock lock1 = {F_UNLCK, SEEK_SET, 0, 0, 0};
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40 | fcntl (fd, F_SETLKW, &lock1);
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41 | return 0;
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42 | }
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43 | #endif
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