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When linklets are compiled in JIT mode and a called procedure is to be compiled on demand, consult a cache of compiled fragments (by default, "jit.sqlite" in the addons directory) and either use an existing compiled fragment or add to the cache after compiling. Results for this initial implementation suggests that the idea is workable. With the cache, starting a JIT-mode program a second time is almost as fast as non-JIT mode (i.e., directly loading machine code). Some refinements are needed: limiting the size of the JIT-fragment cache, better contention handling, and better inlining of structure operations in JIT mode (which may be useful to cross-linklet optimization in non-JIT mode, too). |
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| racket | ||
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| INSTALL.txt | ||
| Makefile | ||
| README.md | ||
This is the source code for the core of Racket. See "INSTALL.txt" for full information on building Racket.
To build the full Racket distribution from this repository, run make
in the top-level directory. To build minimal Racket, run make base.
The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.
Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC channel.
License
Racket Copyright (c) 2010-2018 PLT Design Inc.
Racket is distributed under the GNU Lesser General Public License (LGPL). This implies that you may link Racket into proprietary applications, provided you follow the rules stated in the LGPL. You can also modify Racket; if you distribute a modified version, you must distribute it under the terms of the LGPL, which in particular states that you must release the source code for the modified software.
See racket/src/COPYING_LESSER.txt for more information.