Function hook_hash 

pub unsafe extern "C" fn hook_hash(
    write_ptr: u32,
    write_len: u32,
) -> i64

Retrieve the hash of the currently executing hook. @param write_ptr A buffer of at least 32 bytes to write into. @param write_len The length of that buffer @return The number of bytes written into the buffer of a negative integer if an error occured.