diff options
Diffstat (limited to 'boost/context/posix')
-rw-r--r-- | boost/context/posix/fixedsize_stack.hpp | 80 | ||||
-rw-r--r-- | boost/context/posix/protected_fixedsize_stack.hpp | 4 | ||||
-rw-r--r-- | boost/context/posix/segmented_stack.hpp | 2 |
3 files changed, 80 insertions, 6 deletions
diff --git a/boost/context/posix/fixedsize_stack.hpp b/boost/context/posix/fixedsize_stack.hpp new file mode 100644 index 0000000000..756b260bda --- /dev/null +++ b/boost/context/posix/fixedsize_stack.hpp @@ -0,0 +1,80 @@ + +// Copyright Oliver Kowalke 2014. +// 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_CONTEXT_FIXEDSIZE_H +#define BOOST_CONTEXT_FIXEDSIZE_H + +#include <cstddef> +#include <cstdlib> +#include <new> + +#include <boost/assert.hpp> +#include <boost/config.hpp> + +#include <boost/context/detail/config.hpp> +#include <boost/context/stack_context.hpp> +#include <boost/context/stack_traits.hpp> + +#if defined(BOOST_USE_VALGRIND) +#include <valgrind/valgrind.h> +#endif + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_PREFIX +#endif + +namespace boost { +namespace context { + +template< typename traitsT > +class basic_fixedsize_stack { +private: + std::size_t size_; + +public: + typedef traitsT traits_type; + + basic_fixedsize_stack( std::size_t size = traits_type::default_size() ) BOOST_NOEXCEPT_OR_NOTHROW : + size_( size) { + } + + stack_context allocate() { + void * vp = std::malloc( size_); + if ( ! vp) { + throw std::bad_alloc(); + } + stack_context sctx; + sctx.size = size_; + sctx.sp = static_cast< char * >( vp) + sctx.size; +#if defined(BOOST_USE_VALGRIND) + sctx.valgrind_stack_id = VALGRIND_STACK_REGISTER( sctx.sp, vp); +#endif + return sctx; + } + + void deallocate( stack_context & sctx) BOOST_NOEXCEPT_OR_NOTHROW { + BOOST_ASSERT( sctx.sp); + +#if defined(BOOST_USE_VALGRIND) + VALGRIND_STACK_DEREGISTER( sctx.valgrind_stack_id); +#endif + void * vp = static_cast< char * >( sctx.sp) - sctx.size; + std::free( vp); + } +}; + +typedef basic_fixedsize_stack< stack_traits > fixedsize_stack; +# if ! defined(BOOST_USE_SEGMENTED_STACKS) +typedef fixedsize_stack default_stack; +# endif + +}} + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_SUFFIX +#endif + +#endif // BOOST_CONTEXT_FIXEDSIZE_H diff --git a/boost/context/posix/protected_fixedsize_stack.hpp b/boost/context/posix/protected_fixedsize_stack.hpp index 7d1b789d01..f36d451b40 100644 --- a/boost/context/posix/protected_fixedsize_stack.hpp +++ b/boost/context/posix/protected_fixedsize_stack.hpp @@ -46,8 +46,6 @@ public: basic_protected_fixedsize_stack( std::size_t size = traits_type::default_size() ) BOOST_NOEXCEPT_OR_NOTHROW : size_( size) { - BOOST_ASSERT( traits_type::minimum_size() <= size_); - BOOST_ASSERT( traits_type::is_unbounded() || ( traits_type::maximum_size() >= size_) ); } stack_context allocate() { @@ -88,8 +86,6 @@ public: void deallocate( stack_context & sctx) BOOST_NOEXCEPT_OR_NOTHROW { BOOST_ASSERT( sctx.sp); - BOOST_ASSERT( traits_type::minimum_size() <= sctx.size); - BOOST_ASSERT( traits_type::is_unbounded() || ( traits_type::maximum_size() >= sctx.size) ); #if defined(BOOST_USE_VALGRIND) VALGRIND_STACK_DEREGISTER( sctx.valgrind_stack_id); diff --git a/boost/context/posix/segmented_stack.hpp b/boost/context/posix/segmented_stack.hpp index 25842b6d32..e3d2efcb5b 100644 --- a/boost/context/posix/segmented_stack.hpp +++ b/boost/context/posix/segmented_stack.hpp @@ -47,8 +47,6 @@ public: basic_segmented_stack( std::size_t size = traits_type::default_size() ) BOOST_NOEXCEPT_OR_NOTHROW : size_( size) { - BOOST_ASSERT( traits_type::minimum_size() <= size_); - BOOST_ASSERT( traits_type::is_unbounded() || ( traits_type::maximum_size() >= size_) ); } stack_context allocate() { |