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randvoorhies/deadman.hpp

Created October 10, 2013 18:42
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deadman.hpp
//! A deadman switch that will execute it's constructor parameter on destruction unless disarm()'d
struct deadman
{
deadman(std::function<void()> boom) : boom_(boom) {}
~deadman() { boom_(); }
void disarm() { boom_ = [](){}; }
std::function<void()> boom_;
};
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uint8_t * myfunction()
{
  uint8_t * data;
  deadman onfailure([data]() { delete[] data; };

  data = new uint8_t[1024];

  if( try_to_fill_data(data) == false)
    throw std::runtime_error("Oh crap!");

  onfailure.disarm();
}

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