iokit/IOKit/IOBufferMemoryDescriptor.h

40     // shared IOMemoryDescriptor options for IOBufferMemoryDescriptor:
50     @class IOBufferMemoryDescriptor
54 class IOBufferMemoryDescriptor : public IOGeneralMemoryDescriptor
56     OSDeclareDefaultStructors(IOBufferMemoryDescriptor);
92     OSMetaClassDeclareReservedUsed(IOBufferMemoryDescriptor, 0);
93     OSMetaClassDeclareReservedUsed(IOBufferMemoryDescriptor, 1);
94     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 2);
95     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 3);
96     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 4);
97     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 5);
98     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 6);
99     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 7);
100     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 8);
101     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 9);
102     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 10);
103     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 11);
104     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 12);
105     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 13);
106     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 14);
107     OSMetaClassDeclareReservedUnused(IOBufferMemoryDescriptor, 15);
149      * Returns a new IOBufferMemoryDescriptor with a buffer large enough to
157     static IOBufferMemoryDescriptor * withOptions(  IOOptionBits options,
163     @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.
173     @result Returns an instance of class IOBufferMemoryDescriptor to be released by the caller, which will free the memory desriptor and associated buffer. */
175     static IOBufferMemoryDescriptor * inTaskWithOptions(
183     @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.
191     @result Returns an instance of class IOBufferMemoryDescriptor to be released by the caller, which will free the memory desriptor and associated buffer. */
193     static IOBufferMemoryDescriptor * inTaskWithPhysicalMask(
202      * Returns a new IOBufferMemoryDescriptor with a buffer large enough to
206     static IOBufferMemoryDescriptor * withCapacity(
213      * Initialize a new IOBufferMemoryDescriptor preloaded with bytes (copied).
224      * Returns a new IOBufferMemoryDescriptor preloaded with bytes (copied).
227     static IOBufferMemoryDescriptor * withBytes(