test_process.py 文件源码

def test_cpu_affinity(self):
        p = psutil.Process()
        initial = p.cpu_affinity()
        assert initial, initial
        self.addCleanup(p.cpu_affinity, initial)

        if hasattr(os, "sched_getaffinity"):
            self.assertEqual(initial, list(os.sched_getaffinity(p.pid)))
        self.assertEqual(len(initial), len(set(initial)))

        all_cpus = list(range(len(psutil.cpu_percent(percpu=True))))
        # setting on travis doesn't seem to work (always return all
        # CPUs on get):
        # AssertionError: Lists differ: [0, 1, 2, 3, 4, 5, 6, ... != [0]
        for n in all_cpus:
            p.cpu_affinity([n])
            self.assertEqual(p.cpu_affinity(), [n])
            if hasattr(os, "sched_getaffinity"):
                self.assertEqual(p.cpu_affinity(),
                                 list(os.sched_getaffinity(p.pid)))
            # also test num_cpu()
            if hasattr(p, "num_cpu"):
                self.assertEqual(p.cpu_affinity()[0], p.num_cpu())

        # [] is an alias for "all eligible CPUs"; on Linux this may
        # not be equal to all available CPUs, see:
        # https://github.com/giampaolo/psutil/issues/956
        p.cpu_affinity([])
        if LINUX:
            self.assertEqual(p.cpu_affinity(), p._proc._get_eligible_cpus())
        else:
            self.assertEqual(p.cpu_affinity(), all_cpus)
        if hasattr(os, "sched_getaffinity"):
            self.assertEqual(p.cpu_affinity(),
                             list(os.sched_getaffinity(p.pid)))
        #
        self.assertRaises(TypeError, p.cpu_affinity, 1)
        p.cpu_affinity(initial)
        # it should work with all iterables, not only lists
        p.cpu_affinity(set(all_cpus))
        p.cpu_affinity(tuple(all_cpus))
        invalid_cpu = [len(psutil.cpu_times(percpu=True)) + 10]
        self.assertRaises(ValueError, p.cpu_affinity, invalid_cpu)
        self.assertRaises(ValueError, p.cpu_affinity, range(10000, 11000))
        self.assertRaises(TypeError, p.cpu_affinity, [0, "1"])
        self.assertRaises(ValueError, p.cpu_affinity, [0, -1])

    # TODO: #595