code: def test_thread_safety(self):
      def func_x32():
          with disable_x64():
              time.sleep(0.1)
              return jnp.array(np.int64(0)).dtype
  
      def func_x64():
          with enable_x64():
              time.sleep(0.1)
              return jnp.array(np.int64(0)).dtype
  
      with concurrent.futures.ThreadPoolExecutor() as executor:
          x32 = executor.submit(func_x32)
          x64 = executor.submit(func_x64)
          self.assertEqual(x64.result(), jnp.int64)
          self.assertEqual(x32.result(), jnp.int32)
  
imports: import concurrent.futures
  from functools import partial
  import time
  import unittest
  from absl.testing import absltest
  import numpy
  import jax
  from jax import lax
  from jax import random
  from jax import config
  from jax.experimental import enable_x64, disable_x64
  import jax.numpy
  import jax._src.test_util
label_desc: Use image node_id 5 for calling the X64ContextTests obj's underlying member method code with example usage: obj.test_thread_safety() and returns: jnp, jnp