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< h1 > Boost Exception< / h1 >
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<!-- Copyright (c) 2006 - 2009 Emil Dotchevski and Reverge Studios, Inc. -->
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< div class = "RenoIncludeDIV" > < p > < span class = "RenoEscape" > # <!-- <wiki>`#</wiki> --> < / span > include < < span class = "RenoLink" > < a href = "exception_cloning_hpp.html" > boost/exception_ptr.hpp< / a > < / span > > < / p >
< pre > namespace
boost
{
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< span class = "RenoIncludeSPAN" > typedef ---unspecified--- < span class = "RenoLink" > exception_ptr< / span > ;< / span >
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}< / pre >
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< / div > < p > The < span class = "RenoLink" > exception_ptr< / span > type can be used to refer to a copy of an exception object. It is Default Constructible, Copy Constructible, Assignable and Equality Comparable; < span class = "RenoLink" > exception_ptr< / span > 's operations do not throw.< / p >
< p > Two instances of < span class = "RenoLink" > exception_ptr< / span > are equivalent and compare equal if and only if they refer to the same exception.< / p >
< p > The default constructor of < span class = "RenoLink" > exception_ptr< / span > produces the null value of the type. The null value is equivalent only to itself.< / p >
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< h4 > Thread safety< / h4 >
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< div > < ul > < li > It is legal for multiple threads to hold < span class = "RenoLink" > exception_ptr< / span > references to the same exception object.< / li >
< li > It is illegal for multiple threads to modify the same < span class = "RenoLink" > exception_ptr< / span > object concurrently.< / li >
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< li > While calling < span class = "RenoLink" > < a href = "current_exception.html" > current_exception< / a > < / span > makes a copy of the current exception object, it is still possible for the two copies to share internal state. Therefore, in general it is not safe to call < span class = "RenoLink" > < a href = "rethrow_exception.html" > rethrow_exception< / a > < / span > concurrently to throw the same exception object into multiple threads.< / li >
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< h3 > See Also:< / h3 >
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< div class = "RenoPageList" > < a href = "boost-exception.html" > Boost Exception< br / >
< / a > < a href = "exception_cloning_hpp.html" > boost/exception_ptr.hpp< br / >
< / a > < a href = "copy_exception.html" > copy_exception< br / >
< / a > < a href = "current_exception.html" > current_exception< br / >
< / a > < a href = "enable_current_exception.html" > enable_current_exception< br / >
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< / a > < a href = "frequently_asked_questions.html" > Frequently Asked Questions< br / >
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< / a > < a href = "rethrow_exception.html" > rethrow_exception< br / >
< / a > < a href = "unknown_exception.html" > unknown_exception< br / >
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<!-- Copyright (c) 2006 - 2009 Emil Dotchevski and Reverge Studios, Inc. -->
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< small > Copyright (c) 2006-2009 by Emil Dotchevski and Reverge Studios, Inc.< br / >
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Distributed under the < a href = "http://www.boost.org/LICENSE_1_0.txt" > Boost Software License, Version 1.0< / a > .< / small >
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