![]() |
Home | Libraries | People | FAQ | More |
Boost.Fiber provides the class __fixedsize__
which models the stack-allocator
concept. In contrast to __protected_fixedsize__ it does
not append a guard page at the end of each stack. The memory is simply managed
by std::malloc()
and std::free()
.
#include <boost/context/fixedsize_stack.hpp> struct fixedsize_stack { fixedsize_stack(std::size_t size = traits_type::default_size()); stack_context allocate(); void deallocate( stack_context &); }
stack_context allocate()
traits_type::minimum_size()
<= size
and traits_type::is_unbounded()
|| (
traits_type::maximum_size()
>= size)
.
Allocates memory of at least size
bytes and stores a pointer to the stack and its actual size in sctx
. Depending on the architecture
(the stack grows downwards/upwards) the stored address is the highest/lowest
address of the stack.
void deallocate( stack_context
& sctx)
sctx.sp
is valid, traits_type::minimum_size() <= sctx.size
and traits_type::is_unbounded() || ( traits_type::maximum_size() >= sctx.size)
.
Deallocates the stack space.