temp_file_name.cpp

#include <cstdint>
#include "library.h"

#include <pthread.h>
#include <cstring>
#include <string>
#include <iostream>
#include <cstdio>

#define MAKE_VERSION(x, y, z) "" #x "." #y "." #z ""

std::string GAME_VERSION = MAKE_VERSION(INT_MAX, INT_MAX, INT_MAX);

void emplace_suffix(const uint64_t index, char* name_template)
{
    static const uint64_t BASE_63 = 63;
    static const uint64_t NUM_ONE_BITS_63 = 6;

    static const char char_table[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_!";

    char suffix[] = { '\0', '\0', '\0', '\0', '\0', '\0' };
    const size_t suffix_length = sizeof(suffix) / sizeof(*suffix);

    uint64_t mutable_index = index;
    for (uint64_t i = 0; i < suffix_length; ++i)
    {
        const uint64_t part = (index >> (i * NUM_ONE_BITS_63)) & BASE_63;
        suffix[(suffix_length - 1) - i] = char_table[part];

        mutable_index &= (UINT64_MAX & ~(BASE_63 << (i * NUM_ONE_BITS_63)));
    }

    const size_t name_template_length = strlen(name_template);

//    if (name_template_length != ((suffix_ptr - name_template) + suffix_length))
//    {
//
//    }

    for (uint64_t i = 0; i < (uint64_t)(sizeof(suffix) / sizeof(*suffix)); ++i)
    {
        printf("%c", suffix[i]);
    }
    printf("\n");
}

#include <poll.h>
#include <unistd.h>
#include <sys/socket.h>

int main()
{
    int pipe_ends[] = {0, 0};
    const int pipe_ret = pipe(pipe_ends);

    struct pollfd poll_fd = {
            .fd = pipe_ends[1],
            .events = 0,
            .revents = 0
    };

    const int num_events = poll(&poll_fd, 1, -1);

    return 0;

//    for (int i = 1000000; i < 1001000; ++i)
//    {
//        char len[] = "temp_XXXXXX";
//        emplace_suffix(i, len);
//
//        printf("Hello: %s", len);
//    }

    return 0;
}