1 //===- llvm/System/Signals.h - Signal Handling support ----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines some helpful functions for dealing with the possibility of
11 // unix signals occuring while your program is running.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_SYSTEM_SIGNALS_H
16 #define LLVM_SYSTEM_SIGNALS_H
18 #include "llvm/System/Path.h"
23 /// This function runs all the registered interrupt handlers, including the
24 /// removal of files registered by RemoveFileOnSignal.
25 void RunInterruptHandlers();
27 /// This function registers signal handlers to ensure that if a signal gets
28 /// delivered that the named file is removed.
29 /// @brief Remove a file if a fatal signal occurs.
30 bool RemoveFileOnSignal(const Path &Filename, std::string* ErrMsg = 0);
32 /// When an error signal (such as SIBABRT or SIGSEGV) is delivered to the
33 /// process, print a stack trace and then exit.
34 /// @brief Print a stack trace if a fatal signal occurs.
35 void PrintStackTraceOnErrorSignal();
37 /// AddSignalHandler - Add a function to be called when an abort/kill signal
38 /// is delivered to the process. The handler can have a cookie passed to it
39 /// to identify what instance of the handler it is.
40 void AddSignalHandler(void (*FnPtr)(void *), void *Cookie);
42 /// This function registers a function to be called when the user "interrupts"
43 /// the program (typically by pressing ctrl-c). When the user interrupts the
44 /// program, the specified interrupt function is called instead of the program
45 /// being killed, and the interrupt function automatically disabled. Note
46 /// that interrupt functions are not allowed to call any non-reentrant
47 /// functions. An null interrupt function pointer disables the current
48 /// installed function. Note also that the handler may be executed on a
49 /// different thread on some platforms.
50 /// @brief Register a function to be called when ctrl-c is pressed.
51 void SetInterruptFunction(void (*IF)());
52 } // End sys namespace
53 } // End llvm namespace