std::sig_atomic_t - cppreference.com (original) (raw)

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system	getenv
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signal raise sig_atomic_t	SIG_DFLSIG_IGN SIG_ERR
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SIGABRTSIGFPESIGILL	SIGINTSIGSEGVSIGTERM
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jmp_buf

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| Defined in header | | | | ----------------------------------------------------------------------------- | | | | 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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