The Tor Browser: widget/cocoa/nsIdleServiceX.mm@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsIdleServiceX.h"

     6 #include "nsObjCExceptions.h"

     7 #include "nsIServiceManager.h"

     8 #import <Foundation/Foundation.h>

    10 NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceX, nsIdleService)

    12 bool

    13 nsIdleServiceX::PollIdleTime(uint32_t *aIdleTime)

    14 {

    15   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

    17   kern_return_t rval;

    18   mach_port_t masterPort;

    20   rval = IOMasterPort(kIOMasterPortDefault, &masterPort);

    21   if (rval != KERN_SUCCESS)

    22     return false;

    24   io_iterator_t hidItr;

    25   rval = IOServiceGetMatchingServices(masterPort,

    26                                       IOServiceMatching("IOHIDSystem"),

    27                                       &hidItr);

    29   if (rval != KERN_SUCCESS)

    30     return false;

    31   NS_ASSERTION(hidItr, "Our iterator is null, but it ought not to be!");

    33   io_registry_entry_t entry = IOIteratorNext(hidItr);

    34   NS_ASSERTION(entry, "Our IO Registry Entry is null, but it shouldn't be!");

    36   IOObjectRelease(hidItr);

    38   NSMutableDictionary *hidProps;

    39   rval = IORegistryEntryCreateCFProperties(entry,

    40                                            (CFMutableDictionaryRef*)&hidProps,

    41                                            kCFAllocatorDefault, 0);

    42   if (rval != KERN_SUCCESS)

    43     return false;

    44   NS_ASSERTION(hidProps, "HIDProperties is null, but no error was returned.");

    45   [hidProps autorelease];

    47   id idleObj = [hidProps objectForKey:@"HIDIdleTime"];

    48   NS_ASSERTION([idleObj isKindOfClass: [NSData class]] ||

    49                [idleObj isKindOfClass: [NSNumber class]],

    50                "What we got for the idle object is not what we expect!");

    52   uint64_t time;

    53   if ([idleObj isKindOfClass: [NSData class]])

    54     [idleObj getBytes: &time];

    55   else

    56     time = [idleObj unsignedLongLongValue];

    58   IOObjectRelease(entry);

    60   // convert to ms from ns

    61   time /= 1000000;

    62   if (time > UINT32_MAX) // Overflow will occur

    63     return false;

    65   *aIdleTime = static_cast<uint32_t>(time);

    67   return true;

    69   NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(false);

    70 }

    72 bool

    73 nsIdleServiceX::UsePollMode()

    74 {

    75   return true;

    76 }

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