system函数可以看作是fork+execl+waitpid。当system接收的命令为NULL时返回值只有0和1两种,返回1表明系统的命令处理程序即/bin/sh是可用的,相反则返回0;否则fork出一个子进程,父进程则会使用waitpid一直等待子进程退出,子进程则会调用execl来启动一个程序代替自己,execl("/bin/sh",“sh”,"-c",cmdstring,(char...
Android System Server WTF Android System Server (system_server) is a crucial component of the Android operating system. It is responsible for managing various system services and coordinating communication between apps and hardware. However, sometimes system_server might encounter issues or bugs that le...
SystemServer是由Zygote启动的. 源码路径frameworks/base/services/java/com/android/server/SystemServer.java 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * The main entry point from zygote. */ public static void main(String[] args) { new SystemServer().run(); } 这样SystemServer便启动...
ServiceManager.addService("vibrator", vibrator); Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER); ...//通知服务系统启动完成Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER,"MakeVibratorServiceReady");try{ vibrator.systemReady(); }catch(Throwable e) { reportWtf("making Vibrator Service ready", e);...
isFirstBootOrUpgrade()){int uptimeMillis=(int)SystemClock.elapsedRealtime();MetricsLogger.histogram(null,"boot_system_server_ready",uptimeMillis);final intMAX_UPTIME_MILLIS=60*1000;if(uptimeMillis>MAX_UPTIME_MILLIS){Slog.wtf(SYSTEM_SERVER_TIMING_TAG,"SystemServer init took too long. uptime...
android.util.Log.d("wxl","SystemServer WuXiaolongManagerService"); ServiceManager.addService(Context.WUXIAOLONG_SERVICE,newWuXiaolongManagerService(context)); }catch(Throwable e) { reportWtf("starting WuXiaolongManagerService", e); }// 部分代码省略...} ...
Slog.wtf(SYSTEM_SERVER_TIMING_TAG, "SystemServer init took too long. uptimeMillis=" + uptimeMillis); } } // 开启loop循环,等待消息的来临 Looper.loop(); throw new RuntimeException("Main thread loop unexpectedly exited"); } 在SystemServer的run方法中主要做的事情是: ...
SystemServer通过ZygoteInit.java反射启动,首先会进入main方法,main会构造一个新的SystemServer,然后运行run()方法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /frameworks/base/services/java/com/android/server/SystemServer.java public final class SystemServer { /** * The main entry point from zygot...
2、由Zygote启动SystemServer。 3、SystemServer会启动系统运行所需的众多核心服务和普通服务、以及一些应用及数据。例如:SystemUI 启动就是从 SystemServer 里启动的。 4、进入锁屏界面,开机完成。 SystemServer 中有一个 main()方法为系统服务的入口; /*** The main entry point from zygote.*/public static voi...
SystemUI作为系统主要进程,就是在SystemServer启动的服务其中之一。 话不多说,read the fucking source code: SystemServer.java public static void main(String[] args) { new SystemServer().run(); } private void run() { ... // Start services. try ...