"Oliver Kowalke" <oliver.kowalke@xxxxxx> writes: > I'd like to use split stacks for my coroutine implementation. > I found a website from Ian describing how split stack could be > implemented in gcc but not how to use it in an application. To use it in an application, compile and link with the -fsplit-stack option. > I assume I have to apply the command line option -fsplit-stack and gcc > must be compiled with --enable-gold (as described in Ians blog). For best effect you should in general use the gold linker, but simply configuring GCC with --enable-gold is not enough to cause that to happen. You should either install gold as your default linker, or you should configure GCC using --with-ld=/PATH/TO/GOLD. > Are some macros defined I can use in the code in order to detect that > split stacks are available? Not at present. If you look in libgo/configure.ac you will see a couple of simple autoconf tests. > I assume I've to call a special function similiar to malloc()/calloc() > in order to get a new split stack?! I'm not sure exactly what you are asking. When your program needs a new split stack, it will get one automatically, via the libgcc routine __generic_morestack. You don't have to do anything to make that work. If you are asking how to get a new split stack for a new coroutine, the answer is to call __splitstack_makecontext. See that function and other helpful functions in libgcc/generic-morestack.c. Ian
