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// Copyright Oliver Kowalke 2009.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
#define BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
#include <boost/assert.hpp>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/exception_ptr.hpp>
#include <boost/move/move.hpp>
#include <boost/coroutine/detail/config.hpp>
#include <boost/coroutine/detail/coroutine_context.hpp>
#include <boost/coroutine/detail/flags.hpp>
#include <boost/coroutine/detail/pull_coroutine_impl.hpp>
#include <boost/coroutine/detail/trampoline_pull.hpp>
#include <boost/coroutine/exceptions.hpp>
#include <boost/coroutine/flags.hpp>
#include <boost/coroutine/stack_context.hpp>
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
#if defined(BOOST_MSVC)
# pragma warning(push)
# pragma warning(disable:4355)
#endif
namespace boost {
namespace coroutines {
namespace detail {
struct pull_coroutine_context
{
coroutine_context caller;
coroutine_context callee;
template< typename Coro >
pull_coroutine_context( stack_context const& stack_ctx, Coro *) :
caller(),
callee( trampoline_pull< Coro >, stack_ctx)
{}
};
template< typename PushCoro, typename R, typename Fn, typename StackAllocator >
class pull_coroutine_object : private pull_coroutine_context,
public pull_coroutine_impl< R >
{
private:
typedef pull_coroutine_context ctx_t;
typedef pull_coroutine_impl< R > base_t;
typedef pull_coroutine_object< PushCoro, R, Fn, StackAllocator > obj_t;
Fn fn_;
stack_context stack_ctx_;
StackAllocator stack_alloc_;
static void deallocate_( obj_t * obj)
{
stack_context stack_ctx( obj->stack_ctx_);
StackAllocator stack_alloc( obj->stack_alloc_);
obj->unwind_stack();
obj->~obj_t();
stack_alloc.deallocate( stack_ctx);
}
public:
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
pull_coroutine_object( Fn fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
fn_( fn),
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
#endif
pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
fn_( fn),
#else
fn_( forward< Fn >( fn) ),
#endif
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
void run()
{
BOOST_ASSERT( ! base_t::unwind_requested() );
base_t::flags_ |= flag_started;
base_t::flags_ |= flag_running;
// create push_coroutine
typename PushCoro::synth_type b( & this->callee, & this->caller, false, base_t::preserve_fpu() );
PushCoro push_coro( synthesized_t::syntesized, b);
try
{ fn_( push_coro); }
catch ( forced_unwind const&)
{}
catch (...)
{ base_t::except_ = current_exception(); }
base_t::flags_ |= flag_complete;
base_t::flags_ &= ~flag_running;
typename base_t::param_type to;
this->callee.jump(
this->caller,
reinterpret_cast< intptr_t >( & to),
base_t::preserve_fpu() );
BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
}
void destroy()
{ deallocate_( this); }
};
template< typename PushCoro, typename R, typename Fn, typename StackAllocator >
class pull_coroutine_object< PushCoro, R &, Fn, StackAllocator > : private pull_coroutine_context,
public pull_coroutine_impl< R & >
{
private:
typedef pull_coroutine_context ctx_t;
typedef pull_coroutine_impl< R & > base_t;
typedef pull_coroutine_object< PushCoro, R &, Fn, StackAllocator > obj_t;
Fn fn_;
stack_context stack_ctx_;
StackAllocator stack_alloc_;
static void deallocate_( obj_t * obj)
{
stack_context stack_ctx( obj->stack_ctx_);
StackAllocator stack_alloc( obj->stack_alloc_);
obj->unwind_stack();
obj->~obj_t();
stack_alloc.deallocate( stack_ctx);
}
public:
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
pull_coroutine_object( Fn fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
fn_( fn),
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
#endif
pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
fn_( fn),
#else
fn_( forward< Fn >( fn) ),
#endif
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
void run()
{
BOOST_ASSERT( ! base_t::unwind_requested() );
base_t::flags_ |= flag_started;
base_t::flags_ |= flag_running;
// create push_coroutine
typename PushCoro::synth_type b( & this->callee, & this->caller, false, base_t::preserve_fpu() );
PushCoro push_coro( synthesized_t::syntesized, b);
try
{ fn_( push_coro); }
catch ( forced_unwind const&)
{}
catch (...)
{ base_t::except_ = current_exception(); }
base_t::flags_ |= flag_complete;
base_t::flags_ &= ~flag_running;
typename base_t::param_type to;
this->callee.jump(
this->caller,
reinterpret_cast< intptr_t >( & to),
base_t::preserve_fpu() );
BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
}
void destroy()
{ deallocate_( this); }
};
template< typename PushCoro, typename Fn, typename StackAllocator >
class pull_coroutine_object< PushCoro, void, Fn, StackAllocator > : private pull_coroutine_context,
public pull_coroutine_impl< void >
{
private:
typedef pull_coroutine_context ctx_t;
typedef pull_coroutine_impl< void > base_t;
typedef pull_coroutine_object< PushCoro, void, Fn, StackAllocator > obj_t;
Fn fn_;
stack_context stack_ctx_;
StackAllocator stack_alloc_;
static void deallocate_( obj_t * obj)
{
stack_context stack_ctx( obj->stack_ctx_);
StackAllocator stack_alloc( obj->stack_alloc_);
obj->unwind_stack();
obj->~obj_t();
stack_alloc.deallocate( stack_ctx);
}
public:
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
pull_coroutine_object( Fn fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
fn_( fn),
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
#endif
pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
stack_context const& stack_ctx,
stack_context const& internal_stack_ctx,
StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
ctx_t( internal_stack_ctx, this),
base_t( & this->caller,
& this->callee,
stack_unwind == attrs.do_unwind,
fpu_preserved == attrs.preserve_fpu),
#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
fn_( fn),
#else
fn_( forward< Fn >( fn) ),
#endif
stack_ctx_( stack_ctx),
stack_alloc_( stack_alloc)
{}
void run()
{
BOOST_ASSERT( ! base_t::unwind_requested() );
base_t::flags_ |= flag_started;
base_t::flags_ |= flag_running;
// create push_coroutine
typename PushCoro::synth_type b( & this->callee, & this->caller, false, base_t::preserve_fpu() );
PushCoro push_coro( synthesized_t::syntesized, b);
try
{ fn_( push_coro); }
catch ( forced_unwind const&)
{}
catch (...)
{ base_t::except_ = current_exception(); }
base_t::flags_ |= flag_complete;
base_t::flags_ &= ~flag_running;
typename base_t::param_type to;
this->callee.jump(
this->caller,
reinterpret_cast< intptr_t >( & to),
base_t::preserve_fpu() );
BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
}
void destroy()
{ deallocate_( this); }
};
}}}
#if defined(BOOST_MSVC)
# pragma warning(pop)
#endif
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
#endif // BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
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