Permalink
Cannot retrieve contributors at this time
Fetching contributors…
Cannot retrieve contributors at this time
| from ctypes import c_uint32, cdll, c_int, c_void_p, POINTER, byref | |
| from CoreFoundation import CFStringCreateWithCString, CFRelease, kCFStringEncodingASCII | |
| from objc import pyobjc_id | |
| libIOKit = cdll.LoadLibrary('/System/Library/Frameworks/IOKit.framework/IOKit') | |
| libIOKit.IOPMAssertionCreateWithName.argtypes = [ c_void_p, c_uint32, c_void_p, POINTER(c_uint32) ] | |
| libIOKit.IOPMAssertionRelease.argtypes = [ c_uint32 ] | |
| def CFSTR(py_string): | |
| return CFStringCreateWithCString(None, py_string, kCFStringEncodingASCII) | |
| def raw_ptr(pyobjc_string): | |
| return pyobjc_id(pyobjc_string.nsstring()) | |
| def IOPMAssertionCreateWithName(assert_name, assert_level, assert_msg): | |
| assertID = c_uint32(0) | |
| p_assert_name = raw_ptr(CFSTR(assert_name)) | |
| p_assert_msg = raw_ptr(CFSTR(assert_msg)) | |
| errcode = libIOKit.IOPMAssertionCreateWithName(p_assert_name, | |
| assert_level, p_assert_msg, byref(assertID)) | |
| return (errcode, assertID) | |
| IOPMAssertionRelease = libIOKit.IOPMAssertionRelease | |
| kIOPMAssertionTypeNoIdleSleep = "NoIdleSleepAssertion" | |
| kIOPMAssertionLevelOn = 255 | |
| reason = "python would like the computer to not idle sleep" | |
| # Stop idle sleep | |
| errcode, assertID = IOPMAssertionCreateWithName(kIOPMAssertionTypeNoIdleSleep, | |
| kIOPMAssertionLevelOn, reason) | |
| # prove it to yourself with this on the Terminal: pmset -g assertions | |
| # Let it go again | |
| errcode = IOPMAssertionRelease(assertID) |