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85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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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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#include <BeastConfig.h>
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#include <ripple/rpc/Coroutine.h>
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#include <ripple/rpc/tests/TestOutputSuite.test.h>
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#include <iostream>
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namespace ripple {
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namespace RPC {
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using CoroutineType = Continuation;
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using CoroutinePull = boost::coroutines::coroutine <CoroutineType>::pull_type;
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using CoroutinePush = boost::coroutines::coroutine <CoroutineType>::push_type;
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struct Coroutine::Impl : public std::enable_shared_from_this <Coroutine::Impl>
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{
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Impl (CoroutinePull&& pull_) : pull (std::move (pull_))
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{
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}
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CoroutinePull pull;
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void run()
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{
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while (pull)
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{
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pull();
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if (! pull)
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return;
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if (auto continuation = pull.get())
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{
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auto that = shared_from_this();
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continuation ([that] () { that->run(); });
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return;
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}
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}
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}
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};
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Coroutine::Coroutine (SuspendCallback const& suspendCallback)
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{
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CoroutinePull pull ([suspendCallback] (CoroutinePush& push)
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{
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Suspend suspend = [&push] (CoroutineType const& cbc) {
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push (cbc);
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};
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suspend ({});
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suspendCallback (suspend);
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});
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impl_ = std::make_shared<Impl> (std::move (pull));
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}
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Coroutine::~Coroutine() = default;
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void Coroutine::run()
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{
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assert (impl_);
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if (impl_)
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impl_->run();
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impl_.reset();
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}
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} // RPC
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} // ripple
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