Function sparse_mmap::try_copy

pub unsafe fn try_copy<T>(
    src: *const T,
    dest: *mut T,
    count: usize,
) -> Result<(), MemoryError>

Copies count elements from src to dest. src and dest may overlap. Fails on access violation/SIGSEGV. Note that on case of failure, some of the bytes (even partial elements) may already have been copied.

This also fails if initialize_try_copy has not been called.

Safety

This routine is safe to use if the memory pointed to by src or dest is being concurrently mutated.

WARNING: This routine should only be used when you know that src and dest are valid, reserved addresses but you do not know if they are mapped with the appropriate protection. For example, this routine is useful if dest is a sparse mapping where some pages are mapped with PAGE_NOACCESS/PROT_NONE, and some are mapped with PAGE_READWRITE/PROT_WRITE.