Files
pezkuwi-subxt/substrate/polkadot/runtime/src/environment.rs
T
Robert Habermeier 27c9e6de9a Slash Authorities for irrefutable misbehavior (#84)
* double-commit and prepare misbehavior

* get misbehavior on completion

* collect misbehavior on drop, not only on success

* kill unused transaction_index field

* add primitive misbehavior report type

* add misbehavior report transaction

* store prior session

* fix set_items

* basic checks for misbehavior reports

* crate for substrate bft misbehavior checking

* integrate misbehavior check crate

* fix comment

* new wasm binaries

* fix hash in test

* import misbehavior transactions into queue

* fix test build

* sign on digest and full proposal when proposing

* detect proposal misbehavior

* fix fallout

* restore balance/bondage types
2018-03-13 16:39:27 +01:00

82 lines
2.6 KiB
Rust

// Copyright 2017 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! Environment API: Allows certain information to be accessed throughout the runtime.
use rstd::boxed::Box;
use rstd::cell::RefCell;
use rstd::rc::Rc;
use polkadot_primitives::{BlockNumber, Digest, Hash};
#[derive(Default)]
/// The information that can be accessed globally.
pub struct Environment {
/// The current block number.
pub block_number: BlockNumber,
/// The current block's parent hash.
pub parent_hash: Hash,
/// The current block digest.
pub digest: Digest,
}
/// Do something with the environment and return its value. Keep the function short.
pub fn with_env<T, F: FnOnce(&mut Environment) -> T>(f: F) -> T {
let e = env();
let mut eb = e.borrow_mut();
f(&mut *eb)
}
#[cfg(target_arch = "wasm32")]
fn env() -> Rc<RefCell<Environment>> {
// Initialize it to a null value
static mut SINGLETON: *const Rc<RefCell<Environment>> = 0 as *const Rc<RefCell<Environment>>;
unsafe {
if SINGLETON == 0 as *const Rc<RefCell<Environment>> {
// Make it
let singleton: Rc<RefCell<Environment>> = Rc::new(RefCell::new(Default::default()));
// Put it in the heap so it can outlive this call
SINGLETON = Box::into_raw(Box::new(singleton)) as *const _;
}
// Now we give out a copy of the data that is safe to use concurrently.
(*SINGLETON).clone()
}
}
#[cfg(not(target_arch = "wasm32"))]
fn env() -> Rc<RefCell<Environment>> {
// Initialize it to a null value
thread_local!{
static SINGLETON: RefCell<*const Rc<RefCell<Environment>>> = RefCell::new(0 as *const Rc<RefCell<Environment>>);
}
SINGLETON.with(|s| unsafe {
if *s.borrow() == 0 as *const Rc<RefCell<Environment>> {
// Make it
let singleton: Rc<RefCell<Environment>> = Rc::new(RefCell::new(Default::default()));
// Put it in the heap so it can outlive this call
*s.borrow_mut() = Box::into_raw(Box::new(singleton)) as *const _;
}
// Now we give out a copy of the data that is safe to use concurrently.
(**s.borrow()).clone()
})
}