90 lines
1.7 KiB
C++
Executable file
90 lines
1.7 KiB
C++
Executable file
// Copyright (c) 2011-2016 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "SignalHandler.h"
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#include <mutex>
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#include <iostream>
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#ifdef _WIN32
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <Windows.h>
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#else
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#include <signal.h>
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#include <cstring>
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#endif
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namespace {
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std::function<void(void)> m_handler;
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void handleSignal() {
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static std::mutex m_mutex;
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std::unique_lock<std::mutex> lock(m_mutex, std::try_to_lock);
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if (!lock.owns_lock()) {
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return;
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}
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m_handler();
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}
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#if defined(WIN32)
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BOOL WINAPI winHandler(DWORD type) {
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if (CTRL_C_EVENT == type || CTRL_BREAK_EVENT == type) {
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handleSignal();
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return TRUE;
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} else {
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std::cerr << "Got control signal " << type << ". Exiting without saving...";
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return FALSE;
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}
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return TRUE;
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}
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#else
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void posixHandler(int /*type*/) {
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handleSignal();
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}
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#endif
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}
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namespace Tools {
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bool SignalHandler::install(std::function<void(void)> t)
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{
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#if defined(WIN32)
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bool r = TRUE == ::SetConsoleCtrlHandler(&winHandler, TRUE);
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if (r) {
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m_handler = t;
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}
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return r;
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#else
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struct sigaction newMask;
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std::memset(&newMask, 0, sizeof(struct sigaction));
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newMask.sa_handler = posixHandler;
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if (sigaction(SIGINT, &newMask, nullptr) != 0) {
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return false;
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}
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if (sigaction(SIGTERM, &newMask, nullptr) != 0) {
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return false;
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}
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std::memset(&newMask, 0, sizeof(struct sigaction));
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newMask.sa_handler = SIG_IGN;
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if (sigaction(SIGPIPE, &newMask, nullptr) != 0) {
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return false;
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}
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m_handler = t;
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return true;
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#endif
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}
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}
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