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