72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
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// Copyright Oliver Kowalke 2013.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include "boost/fiber/fiber.hpp"
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#include <system_error>
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#include <boost/assert.hpp>
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#include "boost/fiber/exceptions.hpp"
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#include "boost/fiber/scheduler.hpp"
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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namespace boost {
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namespace fibers {
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void
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fiber::start_() noexcept {
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context * ctx = context::active();
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ctx->attach( impl_.get() );
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switch ( impl_->get_policy() ) {
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case launch::post:
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// push new fiber to ready-queue
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// resume executing current fiber
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ctx->get_scheduler()->schedule( impl_.get() );
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break;
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case launch::dispatch:
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// resume new fiber and push current fiber
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// to ready-queue
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impl_->resume( ctx);
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break;
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default:
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BOOST_ASSERT_MSG( false, "unknown launch-policy");
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}
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}
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void
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fiber::join() {
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// FIXME: must fiber::join() be synchronized?
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if ( BOOST_UNLIKELY( context::active()->get_id() == get_id() ) ) {
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throw fiber_error{ std::make_error_code( std::errc::resource_deadlock_would_occur),
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"boost fiber: trying to join itself" };
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}
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if ( BOOST_UNLIKELY( ! joinable() ) ) {
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throw fiber_error{ std::make_error_code( std::errc::invalid_argument),
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"boost fiber: fiber not joinable" };
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}
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impl_->join();
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impl_.reset();
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}
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void
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fiber::detach() {
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if ( BOOST_UNLIKELY( ! joinable() ) ) {
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throw fiber_error{ std::make_error_code( std::errc::invalid_argument),
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"boost fiber: fiber not joinable" };
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}
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impl_.reset();
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}
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}}
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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