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mm2dTable now opens its data file read-only, using mapped_file_source, so that we don't need write permissions on the file

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This commit is contained in:
Laura Kieras 2014-11-04 16:30:46 -05:00
parent 832fba09c8
commit ecae85e9a8
1 changed files with 12 additions and 11 deletions
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23
moses/TranslationModel/UG/mm/ug_mm_2d_table.h
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@ -52,12 +52,13 @@ namespace ugdiss
VAL operator[](ID key) const;
};
Cell* data;
VAL *M1, *M2;
OFFSET * index;
Cell const* data;
VAL const* M1;
VAL const* M2;
OFFSET const* index;
ID numRows;
ID numCols;
boost::shared_ptr<bio::mapped_file> file;
boost::shared_ptr<bio::mapped_file_source> file;
VAL m1(ID key) const
{
@ -120,8 +121,8 @@ namespace ugdiss
string foo = msg.str();
UTIL_THROW(util::Exception,foo.c_str());
}
file.reset(new bio::mapped_file());
file->open(fname,ios::in|ios::out);
file.reset(new bio::mapped_file_source());
file->open(fname);
if (!file->is_open())
{
ostringstream msg;
@ -130,14 +131,14 @@ namespace ugdiss
string foo = msg.str();
UTIL_THROW(util::Exception,foo.c_str());
}
char* p = file->data();
filepos_type offset = *reinterpret_cast<filepos_type*>(p);
index = reinterpret_cast<OFFSET*>(p+offset); p += sizeof(offset);
char const* p = file->data();
filepos_type offset = *reinterpret_cast<filepos_type const*>(p);
index = reinterpret_cast<OFFSET const*>(p+offset); p += sizeof(offset);
numRows = *reinterpret_cast<ID const*>(p); p += sizeof(id_type);
numCols = *reinterpret_cast<ID const*>(p); p += sizeof(id_type);
data = reinterpret_cast<Cell*>(p);
data = reinterpret_cast<Cell const*>(p);
// cout << numRows << " rows; " << numCols << " columns " << endl;
M1 = reinterpret_cast<VAL*>(index+numRows+1);
M1 = reinterpret_cast<VAL const*>(index+numRows+1);
M2 = M1+numRows;
// cout << "Table " << fname << " has " << numRows << " rows and "
// << numCols << " columns." << endl;