diff --git a/example/cpp03/symmetric/Jamfile.v2 b/example/cpp03/symmetric/Jamfile.v2 index c659ada..2d802fe 100644 --- a/example/cpp03/symmetric/Jamfile.v2 +++ b/example/cpp03/symmetric/Jamfile.v2 @@ -45,3 +45,7 @@ exe merge_arrays exe unwind : unwind.cpp ; + +exe segmented_stack + : segmented_stack.cpp + ; diff --git a/example/cpp03/symmetric/segmented_stack.cpp b/example/cpp03/symmetric/segmented_stack.cpp new file mode 100644 index 0000000..060176a --- /dev/null +++ b/example/cpp03/symmetric/segmented_stack.cpp @@ -0,0 +1,66 @@ + +// 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) + +#include + +#include +#include +#include +#include + +int count = 384; + +#ifdef BOOST_MSVC //MS VisualStudio +__declspec(noinline) void access( char *buf); +#else // GCC +void access( char *buf) __attribute__ ((noinline)); +#endif +void access( char *buf) +{ + buf[0] = '\0'; +} + +void bar( int i) +{ + char buf[4 * 1024]; + + if ( i > 0) + { + access( buf); + std::cout << i << ". iteration" << std::endl; + bar( i - 1); + } +} + +void foo( boost::coroutines::symmetric_coroutine< void >::yield_type &) +{ + bar( count); +} + +void thread_fn() +{ + { + boost::coroutines::symmetric_coroutine< void >::call_type coro( foo); + coro(); + } +} + +int main( int argc, char * argv[]) +{ +#if defined(BOOST_USE_SEGMENTED_STACKS) + std::cout << "using segmented stacks: allocates " << count << " * 4kB == " << 4 * count << "kB on stack, "; + std::cout << "initial stack size = " << boost::coroutines::stack_allocator::traits_type::default_size() / 1024 << "kB" << std::endl; + std::cout << "application should not fail" << std::endl; +#else + std::cout << "using standard stacks: allocates " << count << " * 4kB == " << 4 * count << "kB on stack, "; + std::cout << "initial stack size = " << boost::coroutines::stack_allocator::traits_type::default_size() / 1024 << "kB" << std::endl; + std::cout << "application might fail" << std::endl; +#endif + + boost::thread( thread_fn).join(); + + return 0; +}