generate binary files with x64 pointers

main.cpp

#include <cstdio>
#include <cstdlib>

#define PTYPE int
#define COUNT 105000 // empiric const to make 40M file
#define BUFFER_SIZE 10
#define VARIATION 500100 // allocate "huge" piece of memory

int main() {
    FILE *orderedFile = fopen("ordered.bin", "wb");
    FILE *shuffledFile = fopen("shuffled.bin", "wb");

    PTYPE objects[VARIATION];

    for (int i = 0; i < COUNT; ++i) {
        PTYPE *orderedBuffer[BUFFER_SIZE];
        PTYPE *shuffledBuffer[BUFFER_SIZE];
        for (int j = 0; j < BUFFER_SIZE; ++j) {
            orderedBuffer[j] = &objects[(i * COUNT + j) % VARIATION];
            shuffledBuffer[j] = &objects[rand() % VARIATION];
        }
        fwrite(orderedBuffer, sizeof(PTYPE), 100, orderedFile);
        fwrite(shuffledBuffer, sizeof(PTYPE), 100, shuffledFile);
    }

    fclose(orderedFile);
    fclose(shuffledFile);

    return 0;
}