17 lines
552 B
V
17 lines
552 B
V
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module os
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#include <signal.h>
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fn C.signal(signal int, handlercb SignalHandler) voidptr
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// signal will assign `handler` callback to be called when `signum` signal is received.
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pub fn signal_opt(signum Signal, handler SignalHandler) ?SignalHandler {
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C.errno = 0
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prev_handler := C.signal(int(signum), handler)
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if prev_handler == C.SIG_ERR {
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// errno isn't correctly set on Windows, but EINVAL is this only possible value it can take anyway
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return error_with_code(posix_get_error_msg(C.EINVAL), C.EINVAL)
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}
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return SignalHandler(prev_handler)
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}
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