So I wrote a user threads lib. The threads run in a Solaris process. Signals
occur on the stack of whatever thread is currently executing. I get signals,
like SIGINT, etc., and can let them unwind naturally. But I thought that I'd
like to unwind the exception from within the exception handler, i.e., return to
whatever thread was interrupted/signalled without "naturally" unwinding the
exception. Does anyone have any insight into how that could be done? I have
looked at ucontext.h, found the registers of the thread that was interrupted,
in a ucontext_t, but have had no luck trying to unwind things. Are the offsets
#defined in /usr/include/sys/regset.h useful when examining what is inside a
ucontext_t? Am I trying to do something that is impossible? I am trying to do
this on 32-bit Intel arch.
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