Commit Graph

7 Commits (fe7b482efef18a1adf67907766a59e4c14195db8)

Author SHA1 Message Date
Joe Groff 0a1a252cdb vm: replace assert with FACTOR_ASSERT
Factor is finally a real C++ project and has a custom assert macro. Assertion failures were still getting caught as exceptions and causing failure loops. Write our own macro that calls factor::abort on failure.
2011-11-23 11:11:26 -08:00
Joe Groff 6c0ecf631a vm: charge samples collected in prolog to parent
Fixes #379
2011-11-23 11:11:26 -08:00
Joe Groff e24400679f vm: more defense against multi-faulting
* Clear faulting_p from a safepoint rather than inside general_error, because jumping into unwind-native-frames could blow up.
* Handle multiple faults from fatal_error by breakpointing. Is there anything else we can safely do at that point?
* Verify memory protection faults in the top half of the signal handlers because signal dispatch could fault. Treat memory faults during gc or fep as fatal errors.
* Add a function factor_vm::abort() that restores the default SIGABRT handler and ::abort()s. Use it from fatal_error() so we get useful context from gdb and so the user gets feedback from the system crash reporter that Factor blew up and didn't just disappear.
* In factorbug(), don't proceed with .s .r .c if it would be unsafe to do so.
* Don't pile on signals if we've already called fatal_error().
2011-11-12 13:02:57 -08:00
Joe Groff 90609cc5d8 vm: don't pass this to safepoint constructor
It's bad juju and MSVC calls us out on it.
2011-11-08 11:06:00 -08:00
Joe Groff 04c6b2c393 vm: write signals to pipe immediately
The whole point is to wake up the mx without waiting for the next safepoint derp
2011-11-08 08:42:47 -08:00
Joe Groff 18e01f7770 vm: enqueue signals for FEP signals too
Although SIGINT still can't interrupt the current Factor thread in a sane way, this will at least wake up the run loop when waiting for input and fix #348 when implemented at the application level.
2011-11-08 08:42:47 -08:00
Joe Groff 72d335f2b5 vm: write async signals to pipe for multiplexer
also factor out safepoint logic into its own file
2011-11-08 08:42:46 -08:00