42 lines
732 B
Solidity
42 lines
732 B
Solidity
pragma solidity ^0.4.8;
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import "../ownership/Ownable.sol";
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/*
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* Pausable
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* Abstract contract that allows children to implement a
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* pause mechanism.
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*/
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contract Pausable is Ownable {
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event Pause();
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event Unpause();
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bool public paused = false;
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modifier whenNotPaused() {
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if (paused) throw;
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_;
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}
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modifier whenPaused {
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if (!paused) throw;
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_;
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}
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// called by the owner to pause, triggers stopped state
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function pause() onlyOwner whenNotPaused returns (bool) {
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paused = true;
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Pause();
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return true;
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}
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// called by the owner to unpause, returns to normal state
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function unpause() onlyOwner whenPaused returns (bool) {
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paused = false;
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Unpause();
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return true;
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}
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}
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