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/*
* Created by Phil on 21/08/2014
* Copyright 2014 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
#ifndef TWOBLUECUBES_CATCH_FATAL_CONDITION_H_INCLUDED
#define TWOBLUECUBES_CATCH_FATAL_CONDITION_H_INCLUDED
#include "catch_platform.h"
#include "catch_compiler_capabilities.h"
#include <cassert>
namespace Catch {
// Wrapper for platform-specific fatal error (signals/SEH) handlers
//
// Tries to be cooperative with other handlers, and not step over
// other handlers. This means that unknown structured exceptions
// are passed on, previous signal handlers are called, and so on.
//
// Can only be instantiated once, and assumes that once a signal
// is caught, the binary will end up terminating. Thus, there
class FatalConditionHandler {
bool m_started = false;
// Install/disengage implementation for specific platform.
// Should be if-defed to work on current platform, can assume
// engage-disengage 1:1 pairing.
void engage_platform();
void disengage_platform();
public:
// Should also have platform-specific implementations as needed
FatalConditionHandler();
~FatalConditionHandler();
void engage() {
assert(!m_started && "Handler cannot be installed twice.");
m_started = true;
engage_platform();
}
void disengage() {
assert(m_started && "Handler cannot be uninstalled without being installed first");
m_started = false;
disengage_platform();
}
};
//! Simple RAII guard for (dis)engaging the FatalConditionHandler
class FatalConditionHandlerGuard {
FatalConditionHandler* m_handler;
public:
FatalConditionHandlerGuard(FatalConditionHandler* handler):
m_handler(handler) {
m_handler->engage();
}
~FatalConditionHandlerGuard() {
m_handler->disengage();
}
};
} // end namespace Catch
#endif // TWOBLUECUBES_CATCH_FATAL_CONDITION_H_INCLUDED
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