std::sig_atomic_t
From cppreference.com
| Defined in header <csignal>
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| typedef /* unspecified */ sig_atomic_t; |
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An integer type which can be accessed as an atomic entity even in the presence of asynchronous interrupts made by signals.
Notes
Until C++11, which introduced std::atomic and std::atomic_signal_fence, about the only thing a strictly conforming program could do in a signal handler was to assign a value to a volatile static std::sig_atomic_t variable and promptly return.
See also
| sets a signal handler for particular signal (function) | |
| (C++11) |
fence between a thread and a signal handler executed in the same thread (function) |