Implementing the IOSerialDriverSync Class
Serial drivers on Mac OS X must be derived from the IOSerialDriverSync class. The IOSerialDriverSync class is a pure abstract class that provides an interface that must be implemented by the serial driver. The methods that must be implemented by a serial driver are given in Listing 11-2.
Listing 11-2. The Interface of IOSerialDriverSync, Which Declares the Methods That Must Be Implemented by a Serial Port Driver
class IOSerialDriverSync : public IOService
{
OSDeclareAbstractStructors(IOSerialDriverSync);
public:
virtual IOReturn acquirePort(bool sleep, void *refCon) = 0;
virtual IOReturn releasePort(void *refCon) = 0;
virtual IOReturn setState(UInt32 state, UInt32 mask, ...Get OS X and iOS Kernel Programming now with the O’Reilly learning platform.
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