| Age | Commit message (Collapse) | Author | |
|---|---|---|---|
| 2012-02-04 | * Inline some functions and get rid of the indirection through | Eelco Dolstra | |
| EvalState::eval(). This gives a 12% speedup on ‘nix-instantiate /etc/nixos/nixos/ -A system --readonly-mode’ (from 1.01s to 0.89s). | |||
| 2012-02-04 | * Print elapsed evaluation time. | Eelco Dolstra | |
| 2012-01-19 | * Allow comparisons between derivations by comparing the outPath | Eelco Dolstra | |
| attributes. | |||
| 2012-01-07 | * Don't create thunks for simple constants (integers, strings, paths) | Eelco Dolstra | |
| and allocate them only once. * Move Value and related functions into value.hh. | |||
| 2012-01-04 | * Remove dead code. | Eelco Dolstra | |
| 2012-01-04 | * Don't use dynamic_cast, it's very slow. "nix-instantiate | Eelco Dolstra | |
| /etc/nixos/nixos -A system" spent about 10% of its time in dynamic_cast. | |||
| 2012-01-03 | * Move the implementation of the ‘derivation’ primop into a separate | Eelco Dolstra | |
| file. | |||
| 2011-11-06 | Remove the unused sCurrentOutput symbol | Shea Levy | |
| 2011-11-06 | Merge from trunk | Shea Levy | |
| 2011-10-27 | * In printValueAsXML, handle the case where a "type" attribute is not | Eelco Dolstra | |
| a string. This happens in the NixOS option system. * Remove a bogus comparison of a unsigned integer with -1. | |||
| 2011-09-16 | Add an sCurrentOutput member to EvalState | Shea Levy | |
| 2011-08-06 | * Cache the result of file evaluation (i.e, memoize evalFile()). This | Eelco Dolstra | |
| prevents files from being evaluated and stored as values multiple times. For instance, evaluation of the ‘system’ attribute in NixOS causes ‘nixpkgs/pkgs/lib/lists.nix’ to be evaluated 2019 times. Caching gives a modest speedup and a decent memory footprint reduction (e.g., from 1.44s to 1.28s, and from 81 MiB to 59 MiB with GC_INITIAL_HEAP_SIZE=100000 on my system). | |||
| 2011-08-06 | * Remove a debug statement. | Eelco Dolstra | |
| 2011-08-06 | * Add the Nix corepkgs to the end of the search path. This makes it | Eelco Dolstra | |
| possible for other Nix expressions to use corepkgs (mostly useful for the buildenv function). | |||
| 2011-08-06 | * Add a Nix expression search path feature. Paths between angle | Eelco Dolstra | |
| brackets, e.g. import <nixpkgs/pkgs/lib> are resolved by looking them up relative to the elements listed in the search path. This allows us to get rid of hacks like import "${builtins.getEnv "NIXPKGS_ALL"}/pkgs/lib" The search path can be specified through the ‘-I’ command-line flag and through the colon-separated ‘NIX_PATH’ environment variable, e.g., $ nix-build -I /etc/nixos ... If a file is not found in the search path, an error message is lazily thrown. | |||
| 2011-08-06 | * Refactoring: move parseExprFromFile() and parseExprFromString() into | Eelco Dolstra | |
| the EvalState class. | |||
| 2011-07-13 | * Allow a default value in attribute selection by writing | Eelco Dolstra | |
| x.y.z or default (as originally proposed in https://mail.cs.uu.nl/pipermail/nix-dev/2009-September/002989.html). For instance, an expression like stdenv.lib.attrByPath ["features" "ckSched"] false args can now be written as args.features.ckSched or false | |||
| 2011-07-06 | * Change the right-hand side of the ‘.’ operator from an attribute to | Eelco Dolstra | |
| an attribute path. This is a refactoring to support default values. | |||
| 2011-07-06 | * In the ‘?’ operator, allow attribute paths. For instance, you can | Eelco Dolstra | |
| write ‘attrs ? a.b’ to test whether ‘attrs’ has an attribute ‘a’ containing an attribute ‘b’. This is more convenient than ‘attrs ? a && attrs.a ? b’. Slight change in the semantics: it's no longer an error if the left-hand side of ‘?’ is not an attribute set. In that case it just returns false. So, ‘null ? foo’ no longer throws an error. | |||
| 2011-02-10 | * Don't allocate a big initial GC address space on machines with | Eelco Dolstra | |
| little RAM. Even if the memory isn't actually used, it can cause problems with the overcommit heuristics in the kernel. So use a VM space of 25% of RAM, up to 384 MB. | |||
| 2011-02-09 | * Don't call GC_expand_hp unless we're actually using the garbage | Eelco Dolstra | |
| collector. | |||
| 2010-10-28 | * new(UseGC) is inexplicably slower than GC_MALLOC, so prefer the | Eelco Dolstra | |
| latter. | |||
| 2010-10-28 | * Handle out of memory condition. | Eelco Dolstra | |
| 2010-10-24 | * When allocating an attribute set, reserve enough space for all | Eelco Dolstra | |
| 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 | |
| * 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 | |
| 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 | |
| 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 | * Fix compiling without Boehm. | Eelco Dolstra | |
| * Fix the stats. | |||
| 2010-10-23 | * Optimise string constants by putting them in the symbol table. | Eelco Dolstra | |
| 2010-10-23 | * Make Value smaller by not storing redundant PrimOp info. | Eelco Dolstra | |
| * Clear pointers in Values after overwriting them to make sure that no objects are kept alive unnecessarily. | |||
| 2010-10-23 | * Remove allocValues(). | Eelco Dolstra | |
| 2010-10-22 | * In environments, store pointers to values rather than values. This | Eelco Dolstra | |
| 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 | |
| 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 | |
| 2010-10-20 | * Keep some more stats. | Eelco Dolstra | |
| 2010-10-20 | * Use the Boehm garbage collector to reclaim unused memory in the Nix | Eelco Dolstra | |
| expression evaluator. | |||
| 2010-08-27 | * Oops - "null" was displayed as "true". | Eelco Dolstra | |
| 2010-08-02 | * Optimisation in the // operator: if one of the sets is empty, return | Eelco Dolstra | |
| the other set. | |||
| 2010-06-10 | * builtins.toXML: propagate the string context. This is a regression | Eelco Dolstra | |
| from the old ATerm-based evaluator. | |||
| 2010-06-02 | (no commit message) | Eelco Dolstra | |
| 2010-05-18 | * The << operator on values should be const. | Eelco Dolstra | |
| 2010-05-15 | * Restore the __overrides feature that was lost somewhere in the | Eelco Dolstra | |
| fast-eval branch. | |||
| 2010-05-12 | * Print attributes in sorted order. | Eelco Dolstra | |
| 2010-05-07 | * Store position info for inherited attributes. | Eelco Dolstra | |
| 2010-05-07 | * Keep track of the source positions of attributes. | Eelco Dolstra | |
| 2010-05-06 | * Store attribute positions in the AST and report duplicate attribute | Eelco Dolstra | |
| errors with position info. * For all positions, use the position of the first character of the first token, rather than the last character of the first token plus one. | |||
| 2010-04-22 | * Simplify the implementation of `with'. This gives a 7% speedup in | Eelco Dolstra | |
| evaluating the NixOS system configuration. | |||
| 2010-04-22 | * String equality tests should take the context into account. All the | Eelco Dolstra | |
| evaluation test cases now succeed. | |||
| 2010-04-21 | * Fixed builtins.genericClosure. | Eelco Dolstra | |
| 2010-04-21 | * Store user environment manifests as a Nix expression in | Eelco Dolstra | |
| $out/manifest.nix rather than as an ATerm. (Hm, I thought I committed this two days ago...) | |||
 |
index : ~cnx/guix | |
| Personal Guix development branches |
| summary refs log tree commit diff |