ADB Python-Daemon子进程未连接

Question

我有一个简单的python-daemon，它将在执行我的主要测试时在后台运行。这段代码在我的Ubuntu机器上运行良好，但是由于在Mac上尝试过，因此无法正常工作。

    #! /usr/bin/env python

import daemon
import time as t
import subprocess


def logging():
    while True:
        n = str(10)
        m = str(1)
        i = t.time()
        cpu = open("filepath/to/file" + str(i) + ".txt", "w")
        ram = open("filepath/to/file" + str(i) + ".txt", "w")
        disk = open("filepath/to/file", "a")
        subprocess.call(['adb', 'shell', 'top', '-m', n, '-n', m], stdout=cpu, stderr=cpu)
        subprocess.call(['adb', 'shell', 'cat /proc/meminfo'], stdout=ram)
        subprocess.call(['adb', 'shell', 'df', '/data'], stdout=disk)


def run():
    with daemon.DaemonContext():
        logging()


if __name__ == "__main__":
    run()

无论何时执行此代码，stderr都会给我以下输出：

* daemon not running; starting now at tcp:5037
ADB server didn't ACK
Full server startup log: /var/folders/4_/_dcrxz611mv09n6nd404kj_80000gn/T//adb.501.log
Server had pid: 7910
--- adb starting (pid 7910) ---
adb I 06-03 12:32:24  7910 621421 main.cpp:62] Android Debug Bridge version 1.0.41
adb I 06-03 12:32:24  7910 621421 main.cpp:62] Version 30.0.1-6435776
adb I 06-03 12:32:24  7910 621421 main.cpp:62] Installed as /Users/dishbusiness/Desktop/Android/sdk/platform-tools/adb
adb I 06-03 12:32:24  7910 621421 main.cpp:62] 
adb F 06-03 12:32:25  7910 621421 main.cpp:153] could not install *smartsocket* listener: Address already in use

* failed to start daemon
adb: cannot connect to daemon

我能够使用adb连接到我的设备并运行我的主要测试。这个守护进程似乎有点不想在Mac上使用adb的功能。

• python版本-3.8.3
• adb版本-1.0.41
• SDK版本-30.0.1-6435776
• Mac OS-10.15.5

感谢您的任何帮助！

Answer 1

我能够找出一种解决方法，该方法利用了线程而不是守护程序。参见下面的代码。

import subprocess
import os
from threading import Thread
from datetime import datetime


def run():
    while True:
        m = str(1)
        now = datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')
        cpu = open("/Users/dishbusiness/Desktop/EvolveTestFiles/CPU_RAM/CPU_" + str(now) + ".txt", "w")
        ram = open("/Users/dishbusiness/Desktop/EvolveTestFiles/CPU_RAM/RAM_" + str(now) + ".txt", "w")
        disk = open("/Users/dishbusiness/Desktop/EvolveTestFiles/CPU_RAM/DISK.txt", "a")
        subprocess.call(['adb', 'shell', 'top', '-n', m], stdout=cpu, stderr=cpu)
        subprocess.call(['adb', 'shell', 'cat /proc/meminfo'], stdout=ram)
        subprocess.call(['adb', 'shell', 'df', '/data'], stdout=disk)


def run2():
    subprocess.call(['pytest', 'Evolve106APK.py', '-v', '-s'])
    os._exit(1)


if __name__ == "__main__":
    t1 = Thread(target=run)
    t2 = Thread(target=run2)
    t1.setDaemon(True)
    t2.setDaemon(True)
    t1.start()
    t2.start()
    while True:
        pass

[该线程使用多线程以使“后台”进程（运行）在后台运行，而主要的pytest进程运行（run2）。然后，当pytest进程结束时，我使用os._exit(1)杀死后台进程（运行）。