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Reentrancy Guard Handler


_Based in OZ's ReentracyGuardUpgradeable, but without it's own storage so we can insert the guard respecting storage layout.

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 as nonReentrant 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 Reentrancy After Istanbul.


uint256 _NOT_ENTERED


uint256 _ENTERED


function __ReentrancyGuard_init() internal


function __ReentrancyGuard_init_unchained() internal


function _setStatus(uint256 newStatus) internal virtual


function _getStatus() internal virtual returns (uint256)


modifier 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 a private function that does the actual work.