mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-30 23:42:52 +01:00
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
//===- Signals.cpp - Signal Handling support ------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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 "Config/config.h" // Get the signal handler return type
|
|
#ifdef HAVE_EXECINFO_H
|
|
# include <execinfo.h> // For backtrace().
|
|
#endif
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
using namespace llvm;
|
|
|
|
static std::vector<std::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, SIGFPE, SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
|
|
#ifdef SIGEMT
|
|
, SIGEMT
|
|
#endif
|
|
};
|
|
static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
|
|
|
|
static void* StackTrace[256];
|
|
|
|
// SignalHandler - The signal handler that runs...
|
|
static RETSIGTYPE 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) output the stacktrace to
|
|
// STDERR (if we can) and reissue the signal to die...
|
|
#ifdef HAVE_BACKTRACE
|
|
// Use backtrace() to output a backtrace on Linux systems with glibc.
|
|
int depth = backtrace(StackTrace, sizeof(StackTrace)/sizeof(StackTrace[0]));
|
|
backtrace_symbols_fd(StackTrace, depth, STDERR_FILENO);
|
|
#endif
|
|
signal(Sig, SIG_DFL);
|
|
}
|
|
|
|
static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); }
|
|
|
|
// RemoveFileOnSignal - The public API
|
|
void llvm::RemoveFileOnSignal(const std::string &Filename) {
|
|
FilesToRemove.push_back(Filename);
|
|
|
|
std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
|
|
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
|
|
}
|
|
|
|
/// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
|
|
/// SIGSEGV) is delivered to the process, print a stack trace and then exit.
|
|
void llvm::PrintStackTraceOnErrorSignal() {
|
|
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
|
|
}
|