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coroutine: support for segmented stacks added

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[SVN r82840]
This commit is contained in:
Oliver Kowalke
2013-02-12 19:01:29 +00:00
parent d16dfc92e5
commit 3bf228523c
39 changed files with 2296 additions and 1251 deletions
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83
detail/coroutine_context.cpp Normal file
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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)
#define BOOST_COROUTINES_SOURCE
#include "boost/coroutine/detail/coroutine_context.hpp"
#if defined(BOOST_USE_SEGMENTED_STACKS)
extern "C" {
void __splitstack_getcontext( void * [BOOST_COROUTINES_SEGMENTS]);
void __splitstack_setcontext( void * [BOOST_COROUTINES_SEGMENTS]);
void __splitstack_releasecontext (void * [BOOST_COROUTINES_SEGMENTS]);
void __splitstack_block_signals_context( void * [BOOST_COROUTINES_SEGMENTS], int *, int *);
}
#endif
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
namespace boost {
namespace coroutines {
namespace detail {
coroutine_context::coroutine_context() :
fcontext_t(), stack_ctx_( this), ctx_( this)
{
#if defined(BOOST_USE_SEGMENTED_STACKS)
__splitstack_getcontext( stack_ctx_->segments_ctx);
#endif
}
coroutine_context::coroutine_context( ctx_fn fn, stack_context * stack_ctx) :
fcontext_t(), stack_ctx_( stack_ctx),
ctx_( context::make_fcontext( stack_ctx_->sp, stack_ctx_->size, fn) )
{}
coroutine_context::coroutine_context( coroutine_context const& other) :
fcontext_t(),
stack_ctx_( other.stack_ctx_),
ctx_( other.ctx_)
{}
coroutine_context &
coroutine_context::operator=( coroutine_context const& other)
{
if ( this == & other) return * this;
stack_ctx_ = other.stack_ctx_;
ctx_ = other.ctx_;
return * this;
}
intptr_t
coroutine_context::jump( coroutine_context & other, intptr_t param, bool preserve_fpu)
{
#if defined(BOOST_USE_SEGMENTED_STACKS)
if ( stack_ctx_)
__splitstack_getcontext( stack_ctx_->segments_ctx);
if ( other.stack_ctx_)
__splitstack_setcontext( other.stack_ctx_->segments_ctx);
#endif
return context::jump_fcontext( ctx_, other.ctx_, param, preserve_fpu);
#if defined(BOOST_USE_SEGMENTED_STACKS)
if ( stack_ctx_)
__splitstack_setcontext( stack_ctx_->segments_ctx);
#endif
}
}}}
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif