ReentrancyGuard.sol

Details

Contract module that helps prevent reentrant calls to a function. Inheriting from ReentrancyGuard will make the nonReentrant modifier available, which can be aplied 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.