78 lines
2.1 KiB
Plaintext
78 lines
2.1 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIdleServiceX.h"
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#include "nsObjCExceptions.h"
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#include "nsIServiceManager.h"
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#import <Foundation/Foundation.h>
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NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceX, nsIdleService)
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bool
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nsIdleServiceX::PollIdleTime(uint32_t *aIdleTime)
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;
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kern_return_t rval;
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mach_port_t masterPort;
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rval = IOMasterPort(kIOMasterPortDefault, &masterPort);
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if (rval != KERN_SUCCESS)
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return false;
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io_iterator_t hidItr;
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rval = IOServiceGetMatchingServices(masterPort,
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IOServiceMatching("IOHIDSystem"),
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&hidItr);
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if (rval != KERN_SUCCESS)
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return false;
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NS_ASSERTION(hidItr, "Our iterator is null, but it ought not to be!");
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io_registry_entry_t entry = IOIteratorNext(hidItr);
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NS_ASSERTION(entry, "Our IO Registry Entry is null, but it shouldn't be!");
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IOObjectRelease(hidItr);
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NSMutableDictionary *hidProps;
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rval = IORegistryEntryCreateCFProperties(entry,
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(CFMutableDictionaryRef*)&hidProps,
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kCFAllocatorDefault, 0);
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if (rval != KERN_SUCCESS)
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return false;
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NS_ASSERTION(hidProps, "HIDProperties is null, but no error was returned.");
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[hidProps autorelease];
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id idleObj = [hidProps objectForKey:@"HIDIdleTime"];
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NS_ASSERTION([idleObj isKindOfClass: [NSData class]] ||
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[idleObj isKindOfClass: [NSNumber class]],
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"What we got for the idle object is not what we expect!");
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uint64_t time;
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if ([idleObj isKindOfClass: [NSData class]])
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[idleObj getBytes: &time];
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else
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time = [idleObj unsignedLongLongValue];
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IOObjectRelease(entry);
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// convert to ms from ns
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time /= 1000000;
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if (time > UINT32_MAX) // Overflow will occur
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return false;
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*aIdleTime = static_cast<uint32_t>(time);
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return true;
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NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(false);
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}
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bool
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nsIdleServiceX::UsePollMode()
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{
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return true;
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}
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