1 //===- Signals.cpp - Signal Handling support ------------------------------===//
3 // This file defines some helpful functions for dealing with the possibility of
4 // unix signals occuring while your program is running.
6 //===----------------------------------------------------------------------===//
8 #include "Support/Signals.h"
15 static vector<string> FilesToRemove;
17 // IntSigs - Signals that may interrupt the program at any time.
18 static const int IntSigs[] = {
19 SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2
21 static const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]);
23 // KillSigs - Signals that are synchronous with the program that will cause it
25 static const int KillSigs[] = {
26 SIGILL, SIGTRAP, SIGABRT, SIGEMT, SIGFPE,
27 SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
29 static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
32 // SignalHandler - The signal handler that runs...
33 static void SignalHandler(int Sig) {
34 while (!FilesToRemove.empty()) {
35 std::remove(FilesToRemove.back().c_str());
36 FilesToRemove.pop_back();
39 if (find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd)
40 exit(1); // If this is an interrupt signal, exit the program
42 // Otherwise if it is a fault (like SEGV) reissue the signal to die...
45 static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); }
47 // RemoveFileOnSignal - The public API
48 void RemoveFileOnSignal(const string &Filename) {
49 FilesToRemove.push_back(Filename);
51 for_each(IntSigs, IntSigsEnd, RegisterHandler);
52 for_each(KillSigs, KillSigsEnd, RegisterHandler);