_psbsd.py 文件源码

def cpu_affinity_set(self, cpus):
            # Pre-emptively check if CPUs are valid because the C
            # function has a weird behavior in case of invalid CPUs,
            # see: https://github.com/giampaolo/psutil/issues/586
            allcpus = tuple(range(len(per_cpu_times())))
            for cpu in cpus:
                if cpu not in allcpus:
                    raise ValueError("invalid CPU #%i (choose between %s)"
                                     % (cpu, allcpus))
            try:
                cext.proc_cpu_affinity_set(self.pid, cpus)
            except OSError as err:
                # 'man cpuset_setaffinity' about EDEADLK:
                # <<the call would leave a thread without a valid CPU to run
                # on because the set does not overlap with the thread's
                # anonymous mask>>
                if err.errno in (errno.EINVAL, errno.EDEADLK):
                    for cpu in cpus:
                        if cpu not in allcpus:
                            raise ValueError(
                                "invalid CPU #%i (choose between %s)" % (
                                    cpu, allcpus))
                raise