protot/3rdparty/RuntimeCompiledCpp/RuntimeObjectSystem/RuntimeProtector.h

87 lines
3.1 KiB
C

//
// Copyright (c) 2010-2011 Matthew Jack and Doug Binks
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
#pragma once
#ifndef _WIN32
#include <setjmp.h> // used by posix type systems to chain handling
#endif
// class RuntimeProtector
// overload void ProtectedFunc() to use, put function context (io) in new members
// do not create threads within protected function
// for threaded usuage use a protector per thread
// amortize virtual function call and exception handling by processing many things in one call
// note this isn't a functor as we prefer the explicit function name, and not using lambda's due to Cx11
// not being supported sufficiently as yet
struct RuntimeProtector
{
// consctructor, hint allow debug may be ignored when true if on an OS which has not had this implemented
RuntimeProtector()
: m_bHashadException( false )
, m_bHintAllowDebug( true )
, m_ModulesLoadedCount( 0 )
#ifndef _WIN32
, m_pPrevious( 0 )
#endif
{
}
virtual ~RuntimeProtector() {}
// don't call this directly, derive a class and implement it for your protected func
virtual void ProtectedFunc() = 0;
bool HasHadException() const
{
return m_bHashadException;
}
void ClearExceptions()
{
m_bHashadException = false;
}
//exception information (exposed rather than get/set for simplicity)
enum ExceptionType
{
ESE_Unknown,
ESE_AccessViolation,
ESE_AccessViolationRead, //may just get ESE_AccessViolation
ESE_AccessViolationWrite, //may just get ESE_AccessViolation
ESE_InvalidInstruction
};
struct ExceptionInfo_t
{
ExceptionType Type;
void* Addr; //address of data for access voilation, or instruction for invalid instruction
};
ExceptionInfo_t ExceptionInfo;
bool m_bHashadException;
bool m_bHintAllowDebug; // some RuntimeProtectors may not want to allow debug
// internal
unsigned int m_ModulesLoadedCount; // used internally to reset exceptions when a new module is loaded
#ifndef _WIN32
jmp_buf m_env;
RuntimeProtector* m_pPrevious; // used by posix type systems to chain handling
#endif
};