55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//===- Signals.cpp - Signal Handling support ------------------------------===//
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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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using std::string;
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static std::vector<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, SIGEMT, SIGFPE,
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SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
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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 void 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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}
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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 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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