/usr/include/jellyfish/dumper.hpp is in libjellyfish-2.0-dev 2.2.8-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* This file is part of Jellyfish.
Jellyfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jellyfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Jellyfish. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __JELLYFISH_DUMPER_HPP__
#define __JELLYFISH_DUMPER_HPP__
#include <iostream>
#include <sstream>
#include <fstream>
#include <vector>
#include <string>
#include <jellyfish/err.hpp>
#include <jellyfish/time.hpp>
/**
* A dumper is responsible to dump the hash array to permanent storage
* and zero out the array.
**/
namespace jellyfish {
template<typename storage_t>
class dumper_t {
Time writing_time_;
int index_;
bool one_file_;
std::vector<std::string> file_names_;
protected:
uint64_t min_;
uint64_t max_;
public:
define_error_class(ErrorWriting);
protected:
/// Open the next file with given prefix. If one_file is false,
/// append _0, _1, etc. to the prefix for actual file name. If
/// one_file is true, the prefix is the file name. The first time
/// the file is open in trunc mode, the subsequent times in append
/// mode.
void open_next_file(const char *prefix, std::ofstream &out) {
std::ostringstream name;
name << prefix;
std::ios::openmode mode = std::ios::out;
if(one_file_) {
mode |= (index_++ ? std::ios::ate : std::ios::trunc);
} else {
name << index_++;
mode |= std::ios::trunc;
}
file_names_.push_back(name.str());
out.open(name.str().c_str());
if(out.fail())
throw ErrorWriting(err::msg() << "'" << name.str() << "': "
<< "Can't open file for writing" << err::no);
}
public:
dumper_t() : writing_time_(::Time::zero), index_(0), one_file_(false),
min_(0), max_(std::numeric_limits<uint64_t>::max())
{}
void dump(storage_t* ary) {
Time start;
_dump(ary);
Time end;
writing_time_ += end - start;
}
bool one_file() const { return one_file_; }
void one_file(bool v) { one_file_ = v; }
virtual void _dump(storage_t* ary) = 0;
uint64_t min() const { return min_; }
void min(uint64_t m) { min_ = m; }
uint64_t max() const { return max_; }
void max(uint64_t m) { max_ = m; }
Time get_writing_time() const { return writing_time_; }
int nb_files() const { return index_; }
std::vector<std::string> file_names() { return file_names_; }
std::vector<const char*> file_names_cstr() {
std::vector<const char*> res;
for(size_t i = 0; i < file_names_.size(); ++i)
res.push_back(file_names_[i].c_str());
return res;
}
virtual ~dumper_t() {};
};
}
#endif // __DUMPER_HPP__
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