Struct std::os::MemoryMapUnstable [-] [+] [src]

pub struct MemoryMap {
    // some fields omitted
}

A memory mapped file or chunk of memory. This is a very system-specific interface to the OS's memory mapping facilities (mmap on POSIX, VirtualAlloc/CreateFileMapping on Windows). It makes no attempt at abstracting platform differences, besides in error values returned. Consider yourself warned.

The memory map is released (unmapped) when the destructor is run, so don't let it leave scope by accident if you want it to stick around.

Methods

`impl MemoryMap`

`fn new(min_len: usize, options: &[MapOption]) -> Result<MemoryMap, MapError>`

Create a new mapping with the given options, at least min_len bytes long. min_len must be greater than zero; see the note on ErrZeroLength.

`fn granularity() -> usize`

Granularity that the offset or address must be for MapOffset and MapAddr respectively.

`impl MemoryMap`

`fn data(&self) -> *mut u8`

Returns the pointer to the memory created or modified by this map.

`fn len(&self) -> usize`

Returns the number of bytes this map applies to.

`fn kind(&self) -> MemoryMapKind`

Returns the type of mapping this represents.

Trait Implementations

`impl Drop for MemoryMap`

`fn drop(&mut self)`

Unmap the mapping. Panics the task if munmap panics.