本文整理汇总了C++中IOService::getDeviceMemory方法的典型用法代码示例。如果您正苦于以下问题：C++ IOService::getDeviceMemory方法的具体用法？C++ IOService::getDeviceMemory怎么用？C++ IOService::getDeviceMemory使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IOService的用法示例。
在下文中一共展示了IOService::getDeviceMemory方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: if
IOPolledFilePollers *
IOPolledFilePollers::copyPollers(IOService * media)
{
IOPolledFilePollers * vars;
IOReturn err;
IOService * service;
OSObject * obj;
IORegistryEntry * next;
IORegistryEntry * child;
if ((obj = media->copyProperty(kIOPolledInterfaceStackKey)))
{
return (OSDynamicCast(IOPolledFilePollers, obj));
}
do
{
vars = OSTypeAlloc(IOPolledFilePollers);
vars->init();
vars->pollers = OSArray::withCapacity(4);
if (!vars->pollers)
{
err = kIOReturnNoMemory;
break;
}
next = vars->media = media;
do
{
IOPolledInterface * poller;
OSObject * obj;
obj = next->getProperty(kIOPolledInterfaceSupportKey);
if (kOSBooleanFalse == obj)
{
vars->pollers->flushCollection();
break;
}
else if ((poller = OSDynamicCast(IOPolledInterface, obj)))
vars->pollers->setObject(poller);
if ((service = OSDynamicCast(IOService, next))
&& service->getDeviceMemory()
&& !vars->pollers->getCount()) break;
child = next;
}
while ((next = child->getParentEntry(gIOServicePlane))
&& child->isParent(next, gIOServicePlane, true));
if (!vars->pollers->getCount())
{
err = kIOReturnUnsupported;
break;
}
}
while (false);
media->setProperty(kIOPolledInterfaceStackKey, vars);
return (vars);
}