Function busy_wait_ns

benchmark/ctrack_benchmark.cpp:71–85

Precise busy wait function - waits for specified nanoseconds

// Precise busy wait function - waits for specified nanoseconds
void busy_wait_ns(int64_t nanoseconds)
{
    auto start = std::chrono::high_resolution_clock::now();
    auto target_duration = std::chrono::nanoseconds(nanoseconds);

    while (true)
    {
        auto now = std::chrono::high_resolution_clock::now();
        auto elapsed = now - start;
        if (elapsed >= target_duration)
        {
            break;
        }
    }
}

// Benchmark functions with predictable timing
void leaf_function(int depth)