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134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
//
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// SignalHandler.cpp
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//
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// $Id: //poco/1.3/Foundation/src/SignalHandler.cpp#3 $
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//
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// Library: Foundation
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// Package: Threading
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// Module: SignalHandler
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/SignalHandler.h"
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#if defined(POCO_OS_FAMILY_UNIX) && !defined(POCO_VXWORKS)
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#include "Poco/Thread.h"
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#include "Poco/NumberFormatter.h"
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#include "Poco/Exception.h"
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#include <cstdlib>
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#include <signal.h>
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namespace Poco {
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SignalHandler::JumpBufferVec SignalHandler::_jumpBufferVec;
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SignalHandler::SignalHandler()
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{
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JumpBufferVec& jbv = jumpBufferVec();
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JumpBuffer buf;
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jbv.push_back(buf);
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}
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SignalHandler::~SignalHandler()
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{
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jumpBufferVec().pop_back();
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}
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sigjmp_buf& SignalHandler::jumpBuffer()
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{
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return jumpBufferVec().back().buf;
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}
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void SignalHandler::throwSignalException(int sig)
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{
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switch (sig)
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{
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case SIGILL:
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throw SignalException("Illegal instruction");
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case SIGBUS:
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throw SignalException("Bus error");
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case SIGSEGV:
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throw SignalException("Segmentation violation");
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case SIGSYS:
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throw SignalException("Invalid system call");
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default:
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throw SignalException(NumberFormatter::formatHex(sig));
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}
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}
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void SignalHandler::install()
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{
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#ifndef POCO_NO_SIGNAL_HANDLER
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struct sigaction sa;
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sa.sa_handler = handleSignal;
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sa.sa_flags = 0;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGILL, &sa, 0);
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sigaction(SIGBUS, &sa, 0);
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sigaction(SIGSEGV, &sa, 0);
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sigaction(SIGSYS, &sa, 0);
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#endif
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}
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void SignalHandler::handleSignal(int sig)
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{
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JumpBufferVec& jb = jumpBufferVec();
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if (!jb.empty())
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siglongjmp(jb.back().buf, sig);
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// Abort if no jump buffer registered
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std::abort();
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}
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SignalHandler::JumpBufferVec& SignalHandler::jumpBufferVec()
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{
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ThreadImpl* pThread = ThreadImpl::currentImpl();
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if (pThread)
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return pThread->_jumpBufferVec;
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else
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return _jumpBufferVec;
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}
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} // namespace Poco
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#endif // POCO_OS_FAMILY_UNIX
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