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std::sig_atomic_t - cppreference.com

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sig_atomic_t

SIG_DFLSIG_IGN SIG_ERR Signal types SIGABRTSIGFPESIGILL SIGINTSIGSEGVSIGTERM Non-local jumps setjmp longjmp Types jmp_buf [edit]

Defined in header

<csignal>

typedef /* unspecified */ sig_atomic_t;

An integer type which can be accessed as an atomic entity even in the presence of asynchronous interrupts made by signals.

[edit] 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.

[edit] See also signal sets a signal handler for particular signal
(function) [edit] atomic_signal_fence

(C++11)

fence between a thread and a signal handler executed in the same thread
(function) [edit] C documentation

for

sig_atomic_t

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