forked from OSchip/llvm-project
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//===- Signals.cpp - Signal Handling support ------------------------------===//
|
|
//
|
|
// This file defines some helpful functions for dealing with the possibility of
|
|
// unix signals occuring while your program is running.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Support/Signals.h"
|
|
#include <vector>
|
|
#include <algorithm>
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
#include <signal.h>
|
|
using std::string;
|
|
|
|
static std::vector<string> FilesToRemove;
|
|
|
|
// IntSigs - Signals that may interrupt the program at any time.
|
|
static const int IntSigs[] = {
|
|
SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2
|
|
};
|
|
static const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]);
|
|
|
|
// KillSigs - Signals that are synchronous with the program that will cause it
|
|
// to die.
|
|
static const int KillSigs[] = {
|
|
SIGILL, SIGTRAP, SIGABRT, SIGEMT, SIGFPE,
|
|
SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
|
|
};
|
|
static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
|
|
|
|
|
|
// SignalHandler - The signal handler that runs...
|
|
static void SignalHandler(int Sig) {
|
|
while (!FilesToRemove.empty()) {
|
|
std::remove(FilesToRemove.back().c_str());
|
|
FilesToRemove.pop_back();
|
|
}
|
|
|
|
if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd)
|
|
exit(1); // If this is an interrupt signal, exit the program
|
|
|
|
// Otherwise if it is a fault (like SEGV) reissue the signal to die...
|
|
}
|
|
|
|
static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); }
|
|
|
|
// RemoveFileOnSignal - The public API
|
|
void RemoveFileOnSignal(const string &Filename) {
|
|
FilesToRemove.push_back(Filename);
|
|
|
|
std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
|
|
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
|
|
}
|