pub struct FrameAllocOptions { /* private fields */ }Expand description
Options for allocating physical memory pages (or frames).
All allocated frames are safe to use in the sense that they are not typed memory. We define typed memory as the memory that may store Rust objects or affect Rust memory safety, e.g., the code and data segments of the OS kernel, the stack and heap allocated for the OS kernel.
Implementations§
source§impl FrameAllocOptions
impl FrameAllocOptions
sourcepub fn new(nframes: usize) -> Self
pub fn new(nframes: usize) -> Self
Creates new options for allocating the specified number of frames.
sourcepub fn is_contiguous(&mut self, is_contiguous: bool) -> &mut Self
pub fn is_contiguous(&mut self, is_contiguous: bool) -> &mut Self
Sets whether the allocated frames should be contiguous.
The default value is false.
sourcepub fn uninit(&mut self, uninit: bool) -> &mut Self
pub fn uninit(&mut self, uninit: bool) -> &mut Self
Sets whether the allocated frames should be uninitialized.
If uninit is set as false, the frame will be zeroed once allocated.
If uninit is set as true, the frame will NOT be zeroed and should NOT be read before writing.
The default value is false.
sourcepub fn alloc(&self) -> Result<FrameVec>
pub fn alloc(&self) -> Result<FrameVec>
Allocates a collection of page frames according to the given options.
sourcepub fn alloc_single(&self) -> Result<Frame>
pub fn alloc_single(&self) -> Result<Frame>
Allocates a single page frame according to the given options.
sourcepub fn alloc_contiguous(&self) -> Result<Segment>
pub fn alloc_contiguous(&self) -> Result<Segment>
Allocates a contiguous range of page frames according to the given options.
The returned Segment contains at least one page frame.
Auto Trait Implementations§
impl Freeze for FrameAllocOptions
impl RefUnwindSafe for FrameAllocOptions
impl Send for FrameAllocOptions
impl Sync for FrameAllocOptions
impl Unpin for FrameAllocOptions
impl UnwindSafe for FrameAllocOptions
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