a) (BIG ONE) The shared object link using fcontext crashes!
Using boost_1_46_0
boost-1.46 not tested - use 1.45, please
Sorry, I can't accept this, also because crash happens inside boost_context function I don't think it is related to 1.45 / 1.46 differences
Building boost_context:
bjam toolset=gcc context-impl=asm architecture=x86
instruction-set=native
address-model=64 --with-context variant=release stage
which platform i386? Into the documention I provide for all the platforms (arm, i386, x86_64, mips, ppc) the bjam-options you have to used. - for x86 64bit: bjam toolset=gcc architecture=x86 instruction-set=yorksfield address-model=64 context-impl=asm
Then I compile example link.cpp
Run it
It crashes!
not in my test
Unfortunately it is not so good answer :-) Fresh Build with bjam: bjam toolset=gcc context-impl=asm architecture=x86 instruction-set=yorksfield address-model=64 --with-context stage Build of program: g++ -g -O3 -Wall link.cpp -I ../../boost_1_46_0 -L ../../boost_1_46_0/stage/lib/ -Wl,-rpath=../../boost_1_46_0/stage/lib/ -lboost_context -lrt $ ./a.out Segmentation fault $ gdb ./a.out GNU gdb (GDB) 7.2-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/artik/Packages/boost/reviews/bc/a.out...done. (gdb) r Starting program: /home/artik/Packages/boost/reviews/bc/a.out [Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. 0x00000000006033f0 in get_fcontext () (gdb) bt #0 0x00000000006033f0 in get_fcontext () #1 0x00000000004018cd in context () at ../../boost_1_46_0/boost/context/context.hpp:68 #2 main () at link.cpp:24 Starting program: /home/artik/Packages/boost/reviews/bc/a.out [Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. 0x00000000006033f0 in get_fcontext () I'd suggest to dig deeper because it can have very critical effect on how reviewers will see this library.
this is not my fault - boost.build in its current version
No more explanations required... I know all drawbacks of BBv2 and accept as fully reasonable answer! (When do we move to CMake?..)
Do mean why you can specify to use the context swapping provided by the Operating System or the assembler code (==fcontext)?
I mean something like boost::context<> // some default boost::ucontext<> boost::fcontext<> So you can have two implementations in same code. Thanks, Artyom