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845c9f8a51
Conflicts: src/ripple/app/TODO.md src/ripple/app/ledger/Ledger.h src/ripple/protocol/Protocol.h
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_THREADS_SCOPEDWRAPPERCONTEXT_H_INCLUDED
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#define BEAST_THREADS_SCOPEDWRAPPERCONTEXT_H_INCLUDED
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namespace beast {
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/** Wraps a function object so invocation happens during a scoped container lifetime. */
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/** @{ */
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namespace detail {
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template <typename ScopedType, typename Context, typename Handler>
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class ScopedWrapper
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{
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public:
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ScopedWrapper (Context& context, Handler const& handler)
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: m_context (context)
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, m_handler (handler)
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{
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}
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void operator() ()
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{
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ScopedType scope (m_context);
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m_handler();
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}
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private:
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Context& m_context;
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Handler m_handler;
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};
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}
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//------------------------------------------------------------------------------
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/** Helper to eliminate the template argument at call sites. */
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template <typename Context, typename ScopedType>
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class ScopedWrapperContext
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{
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public:
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using context_type = Context;
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using scoped_type = ScopedType;
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class Scope
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{
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public:
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explicit Scope (ScopedWrapperContext const& owner)
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: m_scope (owner.m_context)
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{
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}
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private:
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scoped_type mutable m_scope;
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};
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ScopedWrapperContext ()
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{ }
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template <typename Arg>
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explicit ScopedWrapperContext (Arg& arg)
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: m_context (arg)
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{
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}
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template <typename Handler>
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detail::ScopedWrapper <ScopedType, Context, Handler> wrap (
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Handler const& handler)
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{
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return detail::ScopedWrapper <ScopedType, Context, Handler> (
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m_context, handler);
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}
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private:
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Context mutable m_context;
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};
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}
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#endif
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