datatable2.cpp File Reference

#include <algorithm>
#include <cmath>
#include <cstdint>
#include <cstring>
#include <fcntl.h>
#include <iomanip>
#include <iostream>
#include <mutex>
#include <openGPMP/core/datatable_wip.hpp>
#include <openGPMP/core/utils.hpp>
#include <regex>
#include <string>
#include <sys/mman.h>
#include <sys/stat.h>
#include <thread>
#include <typeinfo>
#include <unistd.h>
#include <unordered_set>
#include <variant>
#include <vector>

Go to the source code of this file.

Functions
bool	is_int (const std::string &str)
bool	is_double (const std::string &str)
void	handle_error (const char *msg)
const char *	map_file (const char *fname, size_t &length)
std::string	dt_to_str (gpmp::core::DataType type)

Variables
static gpmp::core::Logger	_log_

Function Documentation

dt_to_str()

std::string dt_to_str

(

gpmp::core::DataType

type

)

Definition at line 341 of file datatable2.cpp.

                                           {
    switch (type) {
    case gpmp::core::DataType::dt_int64:
        return "int64";
    case gpmp::core::DataType::dt_ldouble:
        return "long double";
    case gpmp::core::DataType::dt_str:
        return "std::string";
    // TODO : Add more cases if needed
    default:
        return "Unknown";
    }
}

References gpmp::core::dt_int64, gpmp::core::dt_ldouble, and gpmp::core::dt_str.

handle_error()

void handle_error

(

const char *

msg

)

Definition at line 69 of file datatable2.cpp.

                                   {
    perror(msg);
    exit(255);
}

Referenced by map_file().

is_double()

bool is_double

(

const std::string &

str

)

Definition at line 65 of file datatable2.cpp.

                                     {
    return std::regex_match(str, std::regex(R"(-?\d+\.\d+)"));
}

is_int()

bool is_int

(

const std::string &

str

)

Definition at line 59 of file datatable2.cpp.

                                  {
    // TODO : determine type of int based on length of largest val?
    return std::regex_match(str, std::regex(R"(-?\d+)"));
}

map_file()

const char* map_file	(	const char *	fname,
		size_t &	length
	)

Definition at line 74 of file datatable2.cpp.

                                                        {
    int fd = open(fname, O_RDONLY);
    if (fd == -1)
        handle_error("open");
 
    // Obtain file size
    struct stat sb;
    if (fstat(fd, &sb) == -1)
        handle_error("fstat");
 
    length = sb.st_size;
 
    const char *addr = static_cast<const char *>(
        mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0u));
    if (addr == MAP_FAILED)
        handle_error("mmap");
 
    // TODO: Close fd at some point in time, call munmap(...)
    return addr;
}

References handle_error(), and u.

Variable Documentation

_log_

gpmp::core::Logger _log_

static

Logger class object

Definition at line 54 of file datatable2.cpp.