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1 //===--- Shutdown.cpp - Unclean exit scenarios ----------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "Shutdown.h"
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10
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11 #include <atomic>
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12 #include <cstdlib>
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13 #include <thread>
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14
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15 namespace clang {
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16 namespace clangd {
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17
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18 void abortAfterTimeout(std::chrono::seconds Timeout) {
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19 // This is more portable than sys::WatchDog, and yields a stack trace.
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20 std::thread([Timeout] {
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21 std::this_thread::sleep_for(Timeout);
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22 std::abort();
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23 }).detach();
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24 }
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25
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26 static std::atomic<bool> ShutdownRequested = {false};
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27
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28 void requestShutdown() {
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29 if (ShutdownRequested.exchange(true))
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30 // This is the second shutdown request. Exit hard.
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31 std::abort();
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32 }
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33
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34 bool shutdownRequested() {
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35 return ShutdownRequested;
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36 }
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37
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38 } // namespace clangd
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39 } // namespace clang
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40
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