Android system shutdown and restart

Android system shutdown and restart

1. Shut down and restart the Android system.CodeIt is located in frameworksasecorejniandroid_ OS _power.cpp and contains

Static void android_ OS _power_shutdown (jnienv * ENV, jobject clazz)

{/* Shut down */

Sync ();

# Ifdef have_android_ OS

Reboot (rb_power_off );

# Endif

}

Static void android_ OS _power_reboot (jnienv * ENV, jobject clazz, jstring reason)

{/* Restart */

Sync ();

# Ifdef have_android_ OS
Inland transportation

If (reason = NULL ){

Reboot (rb_autoboot );

} Else {

Const char * chars = env-> getstringutfchars (reason, null );

_ Reboot (linux_reboot_magic1, linux_reboot_magic2,

Linux_reboot_cmd_restart2, (char *) chars );

Env-> releasestringutfchars (reason, chars); // in case it fails.

}

Jnithrowioexception (ENV, errno );

# Endif

}

2. sys_reboot will be called in Linux, so we can add the restart function to Android;

Which functions are implemented by shutdown and restart in Linux kernel.

The final implementation of reboot is implemented in the arch_reset () function, which is usually defined in arch/ARM/Mach-xxx/include/Mach/system. h. System. H is applied by the Public Code of ARM kernel. Therefore, you need to define this header file and implement it.

The function prototype of arch_reset is
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Void arch_reset (char Mode)

Void arch_reset (char Mode)

To shut down, point the pm_power_off function pointer to your own implementation function. The function pointer is defined in this way.

Void (* pm_power_off) (void );......