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import pytest |
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import time |
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import numpy as np |
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import torch |
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from multiprocessing import Process |
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from ding.envs.env_manager.subprocess_env_manager import ShmBuffer |
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def writer(shm): |
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while True: |
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shm.fill(np.random.random(size=(4, 84, 84)).astype(np.float32)) |
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time.sleep(1) |
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@pytest.mark.unittest |
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def test_shm(): |
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shm = ShmBuffer(dtype=np.float32, shape=(4, 84, 84), copy_on_get=False) |
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writer_process = Process(target=writer, args=(shm, )) |
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writer_process.start() |
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time.sleep(0.1) |
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data1 = shm.get() |
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time.sleep(1) |
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data2 = shm.get() |
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assert (data1 == data2).all() |
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time.sleep(1) |
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data3 = shm.get().copy() |
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time.sleep(1) |
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data4 = shm.get() |
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assert (data3 != data4).all() |
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writer_process.terminate() |
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