I am attempting to use Boost.Fiber on Mac OS X, but it always crashes in makecontext() which is now deprecated on Mac OS X. Is there any plan to get asm working for OS X? include <boost/fiber.hpp> boost::fiber* fi; void fib() { for( int i = 0; i < 10; ++i ) fi->yield(); }; int main( int argc, char** argv ) { boost::fiber f( boost::bind(fib), boost::fiber::default_stacksize, boost::protected_stack_allocator()); fi = &f; f.run(); return 0; } Reason: KERN_INVALID_ADDRESS at address: 0x0000000000010fa0 0x00007fff80820f89 in makecontext () (gdb) bt #0 0x00007fff80820f89 in makecontext () #1 0x000000010001f3a3 in boost::contexts::context::impl_t::impl_t (this=0x100100210, fn=0x100016990 <boost::fibers::detail::trampoline(void*)>, vp=0x100100190, stacksize=65536, nxt=0x1001001c0, alloc_=<value temporarily unavailable, due to optimizations>) at libs/context/src/context_ucontext.cpp:58 #2 0x000000010001f183 in ~auto_ptr [inlined] () at /usr/include/c++/4.2.1/memory:59 #3 0x000000010001f183 in boost::contexts::context::init_ (fn=0x100016990 <boost::fibers::detail::trampoline(void*)>, nxt=0x1001001a0, vp=0x100100190, stacksize=65536, alloc=<value temporarily unavailable, due to optimizations>) at libs/context/src/context_ucontext.cpp:77 #4 0x00000001000017db in boost::contexts::context::create<boost::contexts::protected_stack_allocator> () #5 0x0000000100001a96 in boost::fibers::detail::fiber_base::fiber_base<boost::contexts::protected_stack_allocator> () #6 0x0000000100001b65 in boost::fibers::detail::fiber_object<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0> >::fiber_object<boost::contexts::protected_stack_allocator> () #7 0x0000000100001bdd in boost::fibers::fiber::make_fiber_<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0>, boost::contexts::protected_stack_allocator> () #8 0x0000000100001c54 in boost::fibers::fiber::fiber<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0>, boost::contexts::protected_stack_allocator> () #9 0x00000001000010be in main () Boost 1.45 Boost.Fiber 0.7.0 from Valut i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664) Mac OS X 10.6.6
Am 29.01.2011 04:22, schrieb Daniel Larimer:
I am attempting to use Boost.Fiber on Mac OS X, but it always crashes in makecontext() which is now deprecated on Mac OS X. Is there any plan to get asm working for OS X?
in the next time not - sorry (despide the fact that I've no access to a Mac OS X). Oliver
On 1/29/2011 3:22 AM, Daniel Larimer wrote:
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000010fa0 0x00007fff80820f89 in makecontext () (gdb) bt #0 0x00007fff80820f89 in makecontext () #1 0x000000010001f3a3 in boost::contexts::context::impl_t::impl_t (this=0x100100210, fn=0x100016990<boost::fibers::detail::trampoline(void*)>, vp=0x100100190, stacksize=65536, nxt=0x1001001c0, alloc_=<value temporarily unavailable, due to optimizations>) at libs/context/src/context_ucontext.cpp:58 #2 0x000000010001f183 in ~auto_ptr [inlined] () at /usr/include/c++/4.2.1/memory:59 #3 0x000000010001f183 in boost::contexts::context::init_ (fn=0x100016990<boost::fibers::detail::trampoline(void*)>, nxt=0x1001001a0, vp=0x100100190, stacksize=65536, alloc=<value temporarily unavailable, due to optimizations>) at libs/context/src/context_ucontext.cpp:77 #4 0x00000001000017db in boost::contexts::context::create<boost::contexts::protected_stack_allocator> () #5 0x0000000100001a96 in boost::fibers::detail::fiber_base::fiber_base<boost::contexts::protected_stack_allocator> () #6 0x0000000100001b65 in boost::fibers::detail::fiber_object<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0> >::fiber_object<boost::contexts::protected_stack_allocator> () #7 0x0000000100001bdd in boost::fibers::fiber::make_fiber_<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0>, boost::contexts::protected_stack_allocator> () #8 0x0000000100001c54 in boost::fibers::fiber::fiber<boost::_bi::bind_t<void, void (*)(), boost::_bi::list0>, boost::contexts::protected_stack_allocator> () #9 0x00000001000010be in main ()
On OS X, it certainly used to be the case that you had to define _XOPEN_SOURCE before including <ucontext.h>. I notice that context_ucontext.cpp doesn't do this. When I bumped in to this in 2008 [1], it was already a known issue, but I don't know if Apple has fixed it already. I'd also suggest considering changing the default stack size to SIGSTKSZ rather than using an arbitrary(?) value of 65536. From the POSIX spec [2]: "The value SIGSTKSZ is a system default specifying the number of bytes that would be used to cover the usual case when manually allocating an alternate stack area." Kind regards, Edd [1] http://lists.apple.com/archives/darwin-dev/2008/Jan/msg00232.html [2] http://pubs.opengroup.org/onlinepubs/009695399/functions/sigaltstack.html
participants (3)
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Daniel Larimer -
Edd Dawson -
Oliver Kowalke