Immediate objects have a type tag in the two lowest bits. 00 for fixnums, 10 for immediate objects, 11 for pairs, 01 for everything else. For the sake of a simpler more uniform and faster GC, pairs still have a header like other objects, and the cdr comes before the car. 6/
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Low 8 bits of heap object headers are 5 type bits, and 3 GC bits: permanent (never reclaimed), still (outside an msection), moveable (can be moved). For thread-safe GC, compare-and-swap is used to grab ownership of the object. 7/
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Gambit has a library for you to do your own Run-Time Code Generation (and calling of generated code) for x86 assembly and more. Gambit has a lot of experimental, disabled, unused features and works in progress. Projects for future students! 8/
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Brad Lucier explains his career of numerical computations in Gambit, and making it consistently competitive with or faster than lower-level code written by hand in C or assembly.
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Samuel Yvon presents Mimosa, a unikernel written in
#Gambit Scheme, in which you can update the drivers while the machine is running.2 replies 3 retweets 5 likesShow this thread -
Marc Feeley explains how to migrate tasks from one machine to the other, how to serialize continuations and everything that entails, how to use a trampoline but not too often, how to avoid space leaks between the GVM and target language GC...
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Frédéric Hamel talks about Gambit's new module system, developed to solve issues with the Termite distributed system.
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Frédéric Hamel demonstrates hot code upgrade of distributed code and task migration to a different machine.
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The code was running compiled on an amd64 laptop, and was migrated to run compiled on an ARM raspi, all while running.
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Looks like the conference is being recorded on a Mac laptop camera.
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