Function sparse_mmap::try_write_volatile

pub unsafe fn try_write_volatile<T: AsBytes>(
    dest: *mut T,
    value: &T,
) -> Result<(), MemoryError>

Writes value at dest treating the pointer as a volatile access.

Returns Ok(()) if the write was successful, or Err(MemoryError) if the write was unsuccessful.

Panics if the size is not 1, 2, 4, or 8 bytes.

Safety

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

WARNING: This routine should only be used when you know that dest is 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.