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Header files will be on the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===- Signals.cpp - Signal Handling support ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines some helpful functions for dealing with the possibility of
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// Unix signals occuring while your program is running.
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//
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//===----------------------------------------------------------------------===//
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#include "Support/Signals.h"
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#include <vector>
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#include <algorithm>
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#include <cstdlib>
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#include <cstdio>
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#include <signal.h>
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#include "Config/config.h" // Get the signal handler return type
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static std::vector<std::string> FilesToRemove;
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// IntSigs - Signals that may interrupt the program at any time.
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static const int IntSigs[] = {
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SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2
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};
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static const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]);
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// KillSigs - Signals that are synchronous with the program that will cause it
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// to die.
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static const int KillSigs[] = {
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SIGILL, SIGTRAP, SIGABRT, SIGFPE, SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
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#ifdef SIGEMT
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, SIGEMT
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#endif
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};
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static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
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// SignalHandler - The signal handler that runs...
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static RETSIGTYPE SignalHandler(int Sig) {
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while (!FilesToRemove.empty()) {
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std::remove(FilesToRemove.back().c_str());
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FilesToRemove.pop_back();
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}
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if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd)
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exit(1); // If this is an interrupt signal, exit the program
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// Otherwise if it is a fault (like SEGV) reissue the signal to die...
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signal(Sig, SIG_DFL);
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}
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static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); }
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// RemoveFileOnSignal - The public API
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void RemoveFileOnSignal(const std::string &Filename) {
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FilesToRemove.push_back(Filename);
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std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
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std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
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}
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