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//
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// Copyright (c) 2017 The Khronos Group Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#if defined( __APPLE__ )
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#include "Sleep.h"
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#include <IOKit/pwr_mgt/IOPMLib.h>
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#include <IOKit/IOMessage.h>
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#include "basic_test_conversions.h"
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#define UNUSED __attribute__((unused))
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struct
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{
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io_connect_t connection;
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IONotificationPortRef port;
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io_object_t iterator;
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}sleepInfo;
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void sleepCallback( void * refcon,
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io_service_t service,
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natural_t messageType,
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void * messageArgument );
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void sleepCallback( void * refcon UNUSED,
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io_service_t service UNUSED,
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natural_t messageType,
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void * messageArgument )
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{
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IOReturn result;
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/*
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service -- The IOService whose state has changed.
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messageType -- A messageType enum, defined by IOKit/IOMessage.h or by the IOService's family.
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messageArgument -- An argument for the message, dependent on the messageType.
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*/
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switch ( messageType )
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{
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case kIOMessageSystemWillSleep:
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// Handle demand sleep (such as sleep caused by running out of
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// batteries, closing the lid of a laptop, or selecting
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// sleep from the Apple menu.
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IOAllowPowerChange(sleepInfo.connection,(long)messageArgument);
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vlog( "Hard sleep occurred.\n" );
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break;
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case kIOMessageCanSystemSleep:
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// In this case, the computer has been idle for several minutes
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// and will sleep soon so you must either allow or cancel
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// this notification. Important: if you don’t respond, there will
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// be a 30-second timeout before the computer sleeps.
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// IOCancelPowerChange(root_port,(long)messageArgument);
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result = IOCancelPowerChange(sleepInfo.connection,(long)messageArgument);
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if( kIOReturnSuccess != result )
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vlog( "sleep prevention failed. (%d)\n", result);
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break;
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case kIOMessageSystemHasPoweredOn:
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// Handle wakeup.
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break;
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}
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}
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void PreventSleep( void )
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{
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vlog( "Disabling sleep... " );
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sleepInfo.iterator = (io_object_t) 0;
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sleepInfo.port = NULL;
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sleepInfo.connection = IORegisterForSystemPower
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(
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&sleepInfo, //void * refcon,
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&sleepInfo.port, //IONotificationPortRef * thePortRef,
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sleepCallback, //IOServiceInterestCallback callback,
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&sleepInfo.iterator //io_object_t * notifier
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);
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if( (io_connect_t) 0 == sleepInfo.connection )
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vlog( "failed.\n" );
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else
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vlog( "done.\n" );
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CFRunLoopAddSource(CFRunLoopGetCurrent(),
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IONotificationPortGetRunLoopSource(sleepInfo.port),
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kCFRunLoopDefaultMode);
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}
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void ResumeSleep( void )
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{
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IOReturn result = IODeregisterForSystemPower ( &sleepInfo.iterator );
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if( 0 != result )
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vlog( "Got error %d restoring sleep \n", result );
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else
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vlog( "Sleep restored.\n" );
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}
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#else /* not __APPLE__ */
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void PreventSleep( void ) {}
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void ResumeSleep( void ) {}
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#endif
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