/* Menes - C++ High-Level Utility Library * Copyright (C) 2005 Jay Freeman (saurik) */ /* * Redistribution and use in source and binary * forms, with or without modification, are permitted * provided that the following conditions are met: * * 1. Redistributions of source code must retain the * above copyright notice, this list of conditions * and the following disclaimer. * 2. Redistributions in binary form must reproduce the * above copyright notice, this list of conditions * and the following disclaimer in the documentation * and/or other materials provided with the * distribution. * 3. The name of the author may not be used to endorse * or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "cxx/standard.hh" #pragma hdrstop("build/cxx/standard.pch") #ifdef MENES_PRAGMA_ONCE #pragma once #endif #include "api/posix/error.hpp" #include "api/posix/signals.hpp" #include namespace api { namespace Posix { namespace { SignalHandler handlers_[32]; void SignalHandler_(int signal) { handlers_[signal](); } } void SetSignalHandler(int signal, const SignalHandler &handler) { SignalHandler &slot(handlers_[signal]); bool wasempty(slot.IsEmpty()); bool isempty(handler.IsEmpty()); if (!isempty) { slot = handler; if (wasempty) { // ERR: error: `::' does not have a class or union named `sigaction' struct sigaction action; ::memset(&action, 0, sizeof(action)); action.sa_handler = &SignalHandler_; CheckError(::sigaction(signal, &action, NULL)); } } else if (!wasempty) { // ERR: error: `::' does not have a class or union named `sigaction' struct sigaction action; ::memset(&action, 0, sizeof(action)); action.sa_handler = SIG_DFL; CheckError(::sigaction(signal, &action, NULL)); slot.Clear(); } } } }