Capture power button press on MacOs High Sierra?

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Capture power button press on MacOs High Sierra?

Hello everyone!

I'm developing a MacOs Application in python and I'm having some issues trying to find information related to the power button pressed event. I know that in Ubuntu 14.04 you can find information about it on the acpi folders, but I realized that here in Mac that process is supposedly managed by powerd, I was looking thru the dmesg and console logs looking for something that changes when a restart is done automatically or if the computer couldn't restart itself and had to be powered on by the button.

Let me explain a little more.

In the application, I have a config file where I keep record of how many restarts have been done on the Mac by another application developed by Apple called RestartX. When it hits 10 restarts it will stop with an automation script on Sikuli. The thing is that when the test fails, the computer MUST be turned on by the user, and the RestartX app doesn't record if the test fails as it registers that operation as a Restart (which adds 1 to the app restart counter) and not as a PowerOn event.

If someone with more programming experience could tell me where to catch this kind of events apart from dmesg or how to tell which event in dmesg is related to powerEvents I will be very grateful.

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LEARN ABOUT NETBSD

sysmon_pswitch_unregister

SYSMON_PSWITCH(9)					   BSD Kernel Developer's Manual					 SYSMON_PSWITCH(9)

NAME

     sysmon_pswitch -- framework for power switches

SYNOPSIS

     #include <dev/sysmon/sysmonvar.h>

     int
     sysmon_pswitch_register(struct sysmon_pswitch *smpsw);

     void
     sysmon_pswitch_unregister(struct sysmon_pswitch *smpsw);

     void
     sysmon_pswitch_event(struct sysmon_pswitch *smpsw, int event);

DESCRIPTION

     The machine-independent sysmon_pswitch provides a framework for power management.	The interface has been largely superceded by the pmf(9)
     framework, but sysmon_pswitch is still used to manage power switches as well as related mechanical adapters and buttons.  These are encapsu-
     lated in the following structure:

     struct sysmon_pswitch {
	     const char *smpsw_name;	     /* power switch name */
	     int smpsw_type;		     /* power switch type */

	     LIST_ENTRY(sysmon_pswitch) smpsw_list;
     };

     Unsurprisingly, smpsw_name specifies the name of the power switch and smpsw_type defines the type of it.  The following types are defined:

	   PSWITCH_TYPE_POWER
	   PSWITCH_TYPE_SLEEP
	   PSWITCH_TYPE_LID
	   PSWITCH_TYPE_RESET
	   PSWITCH_TYPE_ACADAPTER
	   PSWITCH_TYPE_HOTKEY

     If the type is PSWITCH_TYPE_HOTKEY, there are few predefined names that can be used for smpsw_name:

	   PSWITCH_HK_DISPLAY_CYCLE  display-cycle
	   PSWITCH_HK_LOCK_SCREEN    lock-screen
	   PSWITCH_HK_BATTERY_INFO   battery-info
	   PSWITCH_HK_EJECT_BUTTON   eject-button
	   PSWITCH_HK_ZOOM_BUTTON    zoom-button
	   PSWITCH_HK_VENDOR_BUTTON  vendor-button

     Once a power switch event has been proceeded, sysmon_pswitch will inform the user space powerd(8), which will possibly execute a script
     matching the type of the power switch.

FUNCTIONS

     After the sysmon_pswitch structure has been initialized, a new power switch device can be registered by using sysmon_pswitch_register().  The
     device can be detached from the framework by sysmon_pswitch_unregister().

     The sysmon_pswitch_event() is used to signal a new power switch event.  There are two possibilities for the value of event:

	   PSWITCH_EVENT_PRESSED     A button has been pressed, the lid has been closed, the AC adapter is off, etc.

	   PSWITCH_EVENT_RELEASED    A button has been released, the lid is open, the AC adapter is on, etc.

     The corresponding events in powerd(8) are pressed and released.

SEE ALSO

     powerd(8), pmf(9), sysmon_envsys(9), sysmon_taskq(9)

AUTHORS

     Jason R. Thorpe <thorpej@NetBSD.org>

BSD
								 January 26, 2010							       BSD