LFJ Developer Docs

Appearance

ReentrancyGuardUpgradeable ​

Git Source

Inherits:
Initializable

This contract is a fork of the ReentrancyGuardUpgradeable contract from OpenZeppelin
that has been modified to update the _nonReentrantBefore and _nonReentrantAfter
functions to internal visibility.
Contract module that helps prevent reentrant calls to a function.
Inheriting from ReentrancyGuard will make the nonReentrant modifier
available, which can be applied to functions to make sure there are no nested
(reentrant) calls to them.
Note that because there is a single nonReentrant guard, functions marked asnonReentrant may not call one another. This can be worked around by making
those functions private, and then adding external nonReentrant entry
points to them.
TIP: If you would like to learn more about reentrancy and alternative ways
to protect against it, check out our blog post
https://blog.openzeppelin.com/reentrancy-after-istanbul/\\[Reentrancy After Istanbul].

State Variables ​

NOT_ENTERED ​

solidity
uint256 private constant NOT_ENTERED = 1;

ENTERED ​

solidity
uint256 private constant ENTERED = 2;

ReentrancyGuardStorageLocation ​

solidity
bytes32 private constant ReentrancyGuardStorageLocation =
    0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

Functions ​

_getReentrancyGuardStorage ​

solidity
function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $);

__ReentrancyGuard_init ​

solidity
function __ReentrancyGuard_init() internal onlyInitializing;

__ReentrancyGuard_init_unchained ​

solidity
function __ReentrancyGuard_init_unchained() internal onlyInitializing;

nonReentrant ​

Prevents a contract from calling itself, directly or indirectly.
Calling a nonReentrant function from another nonReentrant
function is not supported. It is possible to prevent this from happening
by making the nonReentrant function external, and making it call aprivate function that does the actual work.

solidity
modifier nonReentrant();

_nonReentrantBefore ​

solidity
function _nonReentrantBefore() internal;

_nonReentrantAfter ​

solidity
function _nonReentrantAfter() internal;

_reentrancyGuardEntered ​

Returns true if the reentrancy guard is currently set to "entered", which indicates there is anonReentrant function in the call stack.

solidity
function _reentrancyGuardEntered() internal view returns (bool);

Errors ​

ReentrancyGuardReentrantCall ​

Unauthorized reentrant call.

solidity
error ReentrancyGuardReentrantCall();

Structs ​

ReentrancyGuardStorage ​

solidity
struct ReentrancyGuardStorage {
    uint256 _status;
}