iokit/IOKit/IOBufferMemoryDescriptor.h

41     // shared IOMemoryDescriptor options for IOBufferMemoryDescriptor:
54     @class IOBufferMemoryDescriptor
58 class IOBufferMemoryDescriptor : public IOGeneralMemoryDescriptor
60     OSDeclareDefaultStructors(IOBufferMemoryDescriptor);
101     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 0);
102     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 1);
104     OSMetaClassDeclareReservedUsed(IOBufferMemoryDescriptor, 0);
105     OSMetaClassDeclareReservedUsed(IOBufferMemoryDescriptor, 1);
107     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 2);
108     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 3);
109     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 4);
110     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 5);
111     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 6);
112     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 7);
113     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 8);
114     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 9);
115     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 10);
116     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 11);
117     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 12);
118     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 13);
119     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 14);
120     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 15);
130      * Returns a new IOBufferMemoryDescriptor with a buffer large enough to
140     static IOBufferMemoryDescriptor * withOptions(  IOOptionBits options,
146     @discussion Added in Mac OS X 10.2, this method allocates a memory buffer with a given size and alignment in the task's address space specified, and returns a memory descriptor instance representing the memory. It is recommended that memory allocated for I/O or sharing via mapping be created via IOBufferMemoryDescriptor. Options passed with the request specify the kind of memory to be allocated - pageablity and sharing are specified with option bits. This function may block and so should not be called from interrupt level or while a simple lock is held.
160     @result Returns an instance of class IOBufferMemoryDescriptor to be released by the caller, which will free the memory desriptor and associated buffer. */
162     static IOBufferMemoryDescriptor * inTaskWithOptions(
170     @discussion Added in Mac OS X 10.5, this method allocates a memory buffer with a given size and alignment in the task's address space specified, and returns a memory descriptor instance representing the memory. It is recommended that memory allocated for I/O or sharing via mapping be created via IOBufferMemoryDescriptor. Options passed with the request specify the kind of memory to be allocated - pageablity and sharing are specified with option bits. This function may block and so should not be called from interrupt level or while a simple lock is held.
182     @result Returns an instance of class IOBufferMemoryDescriptor to be released by the caller, which will free the memory desriptor and associated buffer. */
184     static IOBufferMemoryDescriptor * inTaskWithPhysicalMask(
193      * Returns a new IOBufferMemoryDescriptor with a buffer large enough to
197     static IOBufferMemoryDescriptor * withCapacity(
211      * Returns a new IOBufferMemoryDescriptor preloaded with bytes (copied).
214     static IOBufferMemoryDescriptor * withBytes(