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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
3.2 KiB
C++
79 lines
3.2 KiB
C++
//===- llvm/Support/Signals.h - Signal Handling support ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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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 occurring while your program is running.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_SIGNALS_H
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#define LLVM_SUPPORT_SIGNALS_H
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#include <string>
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namespace llvm {
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class StringRef;
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class raw_ostream;
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namespace sys {
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/// This function runs all the registered interrupt handlers, including the
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/// removal of files registered by RemoveFileOnSignal.
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void RunInterruptHandlers();
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/// This function registers signal handlers to ensure that if a signal gets
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/// delivered that the named file is removed.
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/// Remove a file if a fatal signal occurs.
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bool RemoveFileOnSignal(StringRef Filename, std::string* ErrMsg = nullptr);
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/// This function removes a file from the list of files to be removed on
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/// signal delivery.
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void DontRemoveFileOnSignal(StringRef Filename);
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/// When an error signal (such as SIGABRT or SIGSEGV) is delivered to the
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/// process, print a stack trace and then exit.
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/// Print a stack trace if a fatal signal occurs.
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/// \param Argv0 the current binary name, used to find the symbolizer
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/// relative to the current binary before searching $PATH; can be
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/// StringRef(), in which case we will only search $PATH.
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/// \param DisableCrashReporting if \c true, disable the normal crash
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/// reporting mechanisms on the underlying operating system.
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void PrintStackTraceOnErrorSignal(StringRef Argv0,
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bool DisableCrashReporting = false);
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/// Disable all system dialog boxes that appear when the process crashes.
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void DisableSystemDialogsOnCrash();
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/// Print the stack trace using the given \c raw_ostream object.
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void PrintStackTrace(raw_ostream &OS);
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// Run all registered signal handlers.
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void RunSignalHandlers();
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using SignalHandlerCallback = void (*)(void *);
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/// Add a function to be called when an abort/kill signal is delivered to the
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/// process. The handler can have a cookie passed to it to identify what
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/// instance of the handler it is.
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void AddSignalHandler(SignalHandlerCallback FnPtr, void *Cookie);
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/// This function registers a function to be called when the user "interrupts"
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/// the program (typically by pressing ctrl-c). When the user interrupts the
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/// program, the specified interrupt function is called instead of the program
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/// being killed, and the interrupt function automatically disabled. Note
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/// that interrupt functions are not allowed to call any non-reentrant
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/// functions. An null interrupt function pointer disables the current
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/// installed function. Note also that the handler may be executed on a
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/// different thread on some platforms.
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/// Register a function to be called when ctrl-c is pressed.
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void SetInterruptFunction(void (*IF)());
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} // End sys namespace
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} // End llvm namespace
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#endif
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