| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2010-10-24 | * When allocating an attribute set, reserve enough space for all | Eelco Dolstra | 1 | -3/+1 | |
| elements. This prevents the vector from having to resize itself. | |||||
| 2010-10-24 | * Keep attribute sets in sorted order to speed up attribute lookups. | Eelco Dolstra | 1 | -1/+5 | |
| * Simplify the representation of attributes in the AST. * Change the behaviour of listToAttrs() in case of duplicate names. | |||||
| 2010-10-24 | * Don't create thunks for variable lookups (if possible). This | Eelco Dolstra | 1 | -8/+2 | |
| significantly reduces the number of values allocated (e.g. from 8.7m to 4.9m for the Bittorrent test). | |||||
| 2010-10-24 | * Store attribute sets as a vector instead of a map (i.e. a red-black | Eelco Dolstra | 1 | -2/+16 | |
| tree). This saves a lot of memory. The vector should be sorted so that names can be looked up using binary search, but this is not the case yet. (Surprisingly, looking up attributes using linear search doesn't have a big impact on performance.) Memory consumption for $ nix-instantiate /etc/nixos/nixos/tests -A bittorrent.test --readonly-mode on x86_64-linux with GC enabled is now 185 MiB (compared to 946 MiB on the trunk). | |||||
| 2010-10-23 | * Make Value smaller by not storing redundant PrimOp info. | Eelco Dolstra | 1 | -9/+23 | |
| * Clear pointers in Values after overwriting them to make sure that no objects are kept alive unnecessarily. | |||||
| 2010-10-23 | * Remove allocValues(). | Eelco Dolstra | 1 | -1/+0 | |
| 2010-10-22 | * In environments, store pointers to values rather than values. This | Eelco Dolstra | 1 | -9/+1 | |
| improves GC effectiveness a bit more (because a live value doesn't keep other values in the environment plus the parent environments alive), and removes the need for copy nodes. | |||||
| 2010-10-22 | * Store Value nodes outside of attribute sets. I.e., Attr now stores | Eelco Dolstra | 1 | -2/+5 | |
| a pointer to a Value, rather than the Value directly. This improves the effectiveness of garbage collection a lot: if the Value is stored inside the set directly, then any live pointer to the Value causes all other attributes in the set to be live as well. | |||||
| 2010-10-22 | * Make building against the Boehm GC a configure option. | Eelco Dolstra | 1 | -0/+6 | |
| 2010-10-20 | * Keep some more stats. | Eelco Dolstra | 1 | -0/+3 | |
| 2010-10-20 | * Use the Boehm garbage collector to reclaim unused memory in the Nix | Eelco Dolstra | 1 | -1/+4 | |
| expression evaluator. | |||||
| 2010-10-04 | * Make sure that config.h is included before the system headers, | Eelco Dolstra | 1 | -2/+2 | |
| because it defines _FILE_OFFSET_BITS. Without this, on OpenSolaris the system headers define it to be 32, and then the 32-bit stat() ends up being called with a 64-bit "struct stat", or vice versa. This also ensures that we get 64-bit file sizes everywhere. * Remove the redundant call to stat() in parseExprFromFile(). The file cannot be a symlink because that's the exit condition of the loop before. | |||||
| 2010-10-04 | * Hack needed for GCC 4.3.2 on OpenSolaris. | Eelco Dolstra | 1 | -1/+1 | |
| 2010-06-10 | * builtins.toXML: propagate the string context. This is a regression | Eelco Dolstra | 1 | -0/+2 | |
| from the old ATerm-based evaluator. | |||||
| 2010-05-18 | * The << operator on values should be const. | Eelco Dolstra | 1 | -1/+1 | |
| 2010-05-15 | * Restore the __overrides feature that was lost somewhere in the | Eelco Dolstra | 1 | -1/+2 | |
| fast-eval branch. | |||||
| 2010-05-07 | * Keep track of the source positions of attributes. | Eelco Dolstra | 1 | -1/+10 | |
| 2010-04-22 | * Simplify the implementation of `with'. This gives a 7% speedup in | Eelco Dolstra | 1 | -0/+1 | |
| evaluating the NixOS system configuration. | |||||
| 2010-04-22 | * String equality tests should take the context into account. All the | Eelco Dolstra | 1 | -1/+1 | |
| evaluation test cases now succeed. | |||||
| 2010-04-21 | * Fixed builtins.genericClosure. | Eelco Dolstra | 1 | -1/+1 | |
| 2010-04-21 | * Store user environment manifests as a Nix expression in | Eelco Dolstra | 1 | -1/+10 | |
| $out/manifest.nix rather than as an ATerm. (Hm, I thought I committed this two days ago...) | |||||
| 2010-04-16 | * Updated some more primops. | Eelco Dolstra | 1 | -0/+1 | |
| 2010-04-15 | * Store lists as lists of pointers to values rather than as lists of | Eelco Dolstra | 1 | -2/+2 | |
| values. This improves sharing and gives another speed up. Evaluation of the NixOS system attribute is now almost 7 times faster than the old evaluator. | |||||
| 2010-04-14 | * Better stats. | Eelco Dolstra | 1 | -1/+3 | |
| 2010-04-14 | * Fix builtins. | Eelco Dolstra | 1 | -0/+9 | |
| 2010-04-14 | * Refactoring: move variable uses to a separate class. | Eelco Dolstra | 1 | -1/+1 | |
| 2010-04-14 | * After parsing, compute level/displacement pairs for each variable | Eelco Dolstra | 1 | -8/+8 | |
| use site, allowing environments to be stores as vectors of values rather than maps. This should speed up evaluation and reduce the number of allocations. | |||||
| 2010-04-14 | * Change the semantics of "with" so that inner "withs" take | Eelco Dolstra | 1 | -2/+0 | |
| precedence, i.e. `with {x=1;}; with {x=2;}; x' evaluates to 2'. This has a simpler implementation and seems more natural. There doesn't seem to be any code in Nixpkgs or NixOS that relies on the old behaviour. | |||||
| 2010-04-13 | * Evaluate lets directly (i.e. without desugaring to `rec { attrs...; | Eelco Dolstra | 1 | -0/+1 | |
| <let-body> = e; }.<let-body>). This prevents the unnecessary allocation of an attribute set. | |||||
| 2010-04-13 | * Use a symbol table to represent identifiers and attribute names | Eelco Dolstra | 1 | -3/+13 | |
| efficiently. The symbol table ensures that there is only one copy of each symbol, thus allowing symbols to be compared efficiently using a pointer equality test. | |||||
| 2010-04-12 | * Don't use ATerms for the abstract syntax trees anymore. Not | Eelco Dolstra | 1 | -13/+33 | |
| finished yet. | |||||
| 2010-04-09 | * Keep more statistics about stack space usage. | Eelco Dolstra | 1 | -4/+12 | |
| * Reduce stack space usage. | |||||
| 2010-04-07 | * Update autoCallFunction() and findAlongAttrPath(). | Eelco Dolstra | 1 | -28/+6 | |
| 2010-04-07 | * Implemented the primops necessary for generating the NixOS manual. | Eelco Dolstra | 1 | -7/+14 | |
| 2010-04-01 | * Improve sharing. | Eelco Dolstra | 1 | -0/+7 | |
| 2010-04-01 | * Make `derivation' lazy again for performance. It also turns out | Eelco Dolstra | 1 | -0/+8 | |
| that there are some places in Nixpkgs (php_configurable / composableDerivation, it seems) that call `derivation' with incorrect arguments (namely, the `name' attribute missing) but get away with it because of laziness. | |||||
| 2010-03-31 | * Handle string contexts. `nix-instantiate' can now correctly compute | Eelco Dolstra | 1 | -0/+1 | |
| the `firefoxWrapper' attribute in Nixpkgs, and it's about 3 times faster than the trunk :-) | |||||
| 2010-03-31 | * Cache parse trees to prevent repeated parsing of imported Nix | Eelco Dolstra | 1 | -0/+2 | |
| expressions. | |||||
| 2010-03-31 | * Implemented derivations. | Eelco Dolstra | 1 | -2/+7 | |
| 2010-03-30 | * More primops. | Eelco Dolstra | 1 | -1/+2 | |
| 2010-03-30 | * More operators / primops. | Eelco Dolstra | 1 | -14/+4 | |
| 2010-03-30 | * More primops. | Eelco Dolstra | 1 | -4/+6 | |
| 2010-03-30 | * More primops. | Eelco Dolstra | 1 | -0/+4 | |
| 2010-03-30 | * Implemented `map'. | Eelco Dolstra | 1 | -1/+12 | |
| 2010-03-30 | * Make `import' work. | Eelco Dolstra | 1 | -14/+24 | |
| 2010-03-29 | * Started integrating the new evaluator. | Eelco Dolstra | 1 | -10/+142 | |
| 2009-05-12 | * Allow unsafe (unspecified) comparisons between attrsets unless | Eelco Dolstra | 1 | -0/+2 | |
| NIX_NO_UNSAFE_EQ is set, for now. | |||||
| 2007-01-13 | * Memoize strict evaluation. | Eelco Dolstra | 1 | -2/+1 | |
| 2006-10-16 | * Big cleanup of the semantics of paths, strings, contexts, string | Eelco Dolstra | 1 | -7/+16 | |
| concatenation and string coercion. This was a big mess (see e.g. NIX-67). Contexts are now folded into strings, so that they don't cause evaluation errors when they're not expected. The semantics of paths has been clarified (see nixexpr-ast.def). toString() and coerceToString() have been merged. Semantic change: paths are now copied to the store when they're in a concatenation (and in most other situations - that's the formalisation of the meaning of a path). So "foo " + ./bla evaluates to "foo /nix/store/hash...-bla", not "foo /path/to/current-dir/bla". This prevents accidental impurities, and is more consistent with the treatment of derivation outputs, e.g., `"foo " + bla' where `bla' is a derivation. (Here `bla' would be replaced by the output path of `bla'.) | |||||
| 2006-09-22 | * Builtin function `add' to add integers. | Eelco Dolstra | 1 | -0/+1 | |
| * Put common test functions in tests/lang/lib.nix. | |||||
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