import threading
import time
import pyperf
import sys

KEYS = 4_096
LOOPS = 2 ** 9
NTHREAD = 50


code = f"fd = frozendict({', '.join(f'key{key}=1' for key in range(KEYS))})"
exec(code)
assert(len(fd) == KEYS)
assert(all(sys._is_immortal(key) for key in fd.keys()))
fd2 = frozendict(x=1, y=2, z=3)

class Worker(threading.Thread):
    def __init__(self, fd, fd2):
        super().__init__()
        self.copies = 0
        self.fd = fd
        self.fd2 = fd2

    def run(self):
        fd = self.fd
        fd2 = self.fd2
        for _ in range(LOOPS):
            join = fd | fd2

def bench(fd, fd2):
    threads = [Worker(fd, fd2) for _ in range(NTHREAD)]
    for thread in threads:
        thread.start()
    for thread in threads:
        thread.join()

runner = pyperf.Runner()
runner.bench_func('bench', bench, fd, fd2)