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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "sig-catch.h"
#include <csignal>
#include <unistd.h>
#include <string.h>
static int sigPermanent(int sig, void(*handler)(int));
static void setStopFlag(int sig);
sig_atomic_t stop = 0;
SigCatch::SigCatch()
{
sigPermanent(SIGTERM, setStopFlag);
sigPermanent(SIGINT, setStopFlag);
}
bool
SigCatch::receivedStopSignal() {
return stop != 0;
}
static void
setStopFlag(int sig)
{
(void)sig;
stop = 1;
}
static int
sigPermanent(int sig, void(*handler)(int))
{
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0; // no SA_RESTART!
sa.sa_handler = handler;
return sigaction(sig, &sa, nullptr);
}
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