Function spinlock_smp_buffer_test

tests/system_test/spinlock_test.cpp:158–193

std::atomic<int> buffer_test_finished_cores = 0;

auto spinlock_smp_buffer_test() -> bool {
  // 每个核心尝试写入一定次数
  int writes_per_core = 500;

  for (int i = 0; i < writes_per_core; ++i) {
    (void)buffer_lock.Lock();
    if (buffer_index < BUFFER_SIZE) {
      // 写入 Core ID
      shared_buffer[buffer_index++] = cpu_io::GetCurrentCoreId();
    }
    (void)buffer_lock.UnLock();
  }

  int finished = buffer_test_finished_cores.fetch_add(1) + 1;
  int total_cores = BasicInfoSingleton::instance().core_count;

  if (finished == total_cores) {
    // 最后一个完成的核心进行检查
    klog::Info("All cores finished buffer writes. Checking buffer...");

    // 检查写入总数
    int expected_writes = writes_per_core * total_cores;
    if (expected_writes > BUFFER_SIZE) expected_writes = BUFFER_SIZE;

    if (buffer_index != expected_writes) {
      klog::Err("FAIL: Buffer index {}, expected {}", buffer_index,
                expected_writes);
      return false;
    }

    klog::Info("Buffer test passed. Final index: {}", buffer_index);
    return true;
  }

  return true;
}

constexpr int STR_BUFFER_SIZE = 512 * 1024;
// 使用更大的缓冲区以容纳所有字符串