c243e4902b
Provenance: http://code.google.com/p/kyua Discussed with: gibbs, gnn, keramida, mdf, mlaier, Discussed with: Garrett Cooper
148 lines
3.9 KiB
C++
148 lines
3.9 KiB
C++
//
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// Automated Testing Framework (atf)
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//
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// Copyright (c) 2007 The NetBSD Foundation, Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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// CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#if defined(HAVE_CONFIG_H)
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#include "bconfig.h"
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#endif
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extern "C" {
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#include <signal.h>
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#include <unistd.h>
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}
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#include <cerrno>
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#include "atf-c++/detail/exceptions.hpp"
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#include "atf-c++/detail/sanity.hpp"
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#include "signals.hpp"
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namespace impl = atf::atf_run;
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#define IMPL_NAME "atf::atf_run"
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const int impl::last_signo = LAST_SIGNO;
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// ------------------------------------------------------------------------
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// The "signal_holder" class.
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// ------------------------------------------------------------------------
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namespace {
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static bool happened[LAST_SIGNO + 1];
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static
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void
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holder_handler(const int signo)
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{
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happened[signo] = true;
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}
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} // anonymous namespace
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impl::signal_holder::signal_holder(const int signo) :
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m_signo(signo),
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m_sp(NULL)
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{
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happened[signo] = false;
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m_sp = new signal_programmer(m_signo, holder_handler);
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}
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impl::signal_holder::~signal_holder(void)
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{
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if (m_sp != NULL)
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delete m_sp;
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if (happened[m_signo])
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::kill(::getpid(), m_signo);
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}
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void
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impl::signal_holder::process(void)
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{
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if (happened[m_signo]) {
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delete m_sp;
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m_sp = NULL;
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happened[m_signo] = false;
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::kill(::getpid(), m_signo);
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m_sp = new signal_programmer(m_signo, holder_handler);
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}
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}
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// ------------------------------------------------------------------------
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// The "signal_programmer" class.
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// ------------------------------------------------------------------------
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impl::signal_programmer::signal_programmer(const int signo, const handler h) :
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m_signo(signo),
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m_handler(h),
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m_programmed(false)
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{
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struct ::sigaction sa;
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sa.sa_handler = m_handler;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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if (::sigaction(m_signo, &sa, &m_oldsa) == -1)
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throw atf::system_error(IMPL_NAME, "Could not install handler for "
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"signal", errno);
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m_programmed = true;
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}
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impl::signal_programmer::~signal_programmer(void)
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{
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unprogram();
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}
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void
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impl::signal_programmer::unprogram(void)
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{
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if (m_programmed) {
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if (::sigaction(m_signo, &m_oldsa, NULL) == -1)
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UNREACHABLE;
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m_programmed = false;
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}
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}
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// ------------------------------------------------------------------------
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// Free functions.
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// ------------------------------------------------------------------------
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void
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impl::reset(const int signo)
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{
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struct ::sigaction sa;
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sa.sa_handler = SIG_DFL;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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(void)::sigaction(signo, &sa, NULL);
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}
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