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Author SHA1 Message Date
Ludovic Courtès
3854fc9b42 Remove useless <config.h> inclusion from public header. 2011-01-14 13:55:58 +00:00
Eelco Dolstra
812fae424e * DrvInfo contains pointers to expressions, so DrvInfos should be 
traced by the garbage collector.  Otherwise "nix-env -u" can crash
  randomly.
 2010-11-25 13:47:34 +00:00
Eelco Dolstra
4aced7f8d0 * Merge the GC branch. 2010-10-29 15:04:39 +00:00
Eelco Dolstra
26def5392f * Document Boehm GC support. 2010-10-29 14:44:02 +00:00
Eelco Dolstra
3d71c8013e * Use pkgconfig to locate the Boehm GC (as suggested by Ludo), if 
--enable-gc is given.
 2010-10-29 14:00:47 +00:00
Eelco Dolstra
14fbf85380 * Set libgc's initial heap size to 384 MiB to prevent garbage 
collection in most cases (and therefore its performance overhead).
 2010-10-29 13:11:50 +00:00
Eelco Dolstra
0c4828ea05 * new(UseGC) is inexplicably slower than GC_MALLOC, so prefer the 
latter.
 2010-10-28 12:50:01 +00:00
Eelco Dolstra
e11e6fb1c6 * Handle out of memory condition. 2010-10-28 12:29:40 +00:00
Eelco Dolstra
8a788e38ac * Install config.h. 2010-10-26 10:47:02 +00:00
Eelco Dolstra
11ccd44e95 * We need Bison 2.4 now. 2010-10-24 21:48:59 +00:00
Eelco Dolstra
43535499f3 * When allocating an attribute set, reserve enough space for all 
elements.  This prevents the vector from having to resize itself.
 2010-10-24 20:09:37 +00:00
Eelco Dolstra
e0b7fb8f27 * Keep attribute sets in sorted order to speed up attribute lookups. 
* Simplify the representation of attributes in the AST.
* Change the behaviour of listToAttrs() in case of duplicate names.
 2010-10-24 19:52:33 +00:00
Eelco Dolstra
2dc6d50941 * Don't create thunks for variable lookups (if possible). This 
significantly reduces the number of values allocated (e.g. from 8.7m
  to 4.9m for the Bittorrent test).
 2010-10-24 14:20:02 +00:00
Eelco Dolstra
0b305c534f * Store attribute sets as a vector instead of a map (i.e. a red-black 
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).
 2010-10-24 00:41:29 +00:00
Eelco Dolstra
a247d20604 * Fix compiling without Boehm. 
* Fix the stats.
 2010-10-23 22:58:24 +00:00
Eelco Dolstra
02934b1200 * Regression test for listToAttr's behaviour if an attribute name 
occurs multiple times.
 2010-10-23 22:55:30 +00:00
Eelco Dolstra
b2ba62170c * Optimise string constants by putting them in the symbol table. 2010-10-23 21:11:59 +00:00
Eelco Dolstra
8ac06726b9 * Make Value smaller by not storing redundant PrimOp info. 
* Clear pointers in Values after overwriting them to make sure that no
  objects are kept alive unnecessarily.
 2010-10-23 20:07:47 +00:00
Eelco Dolstra
3f66cfb96b * Remove allocValues(). 2010-10-23 18:18:07 +00:00
Eelco Dolstra
4dee289550 * In environments, store pointers to values rather than values. This 
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 15:51:52 +00:00
Eelco Dolstra
cf7e645a48 * Regression test for __overrides. 2010-10-22 15:15:12 +00:00
Eelco Dolstra
41c45a9b31 * Store Value nodes outside of attribute sets. I.e., Attr now stores 
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 14:47:42 +00:00
Eelco Dolstra
64c3325b0b * Make building against the Boehm GC a configure option. 2010-10-22 13:39:15 +00:00
Eelco Dolstra
76feaf016a * Keep some more stats. 2010-10-20 15:48:00 +00:00
Eelco Dolstra
e879a0371b * Use the Boehm garbage collector to reclaim unused memory in the Nix 
expression evaluator.
 2010-10-20 11:38:30 +00:00
Eelco Dolstra
b0c11cda7e * Evaluator garbage collection branch. 2010-10-20 09:08:39 +00:00
Rob Vermaas
8dadcede65 nix manual: fix 'install' -> 'uninstall' in garbage collection section of introduction 2010-10-06 19:04:04 +00:00
Eelco Dolstra
7119d38287 * In the referrers test, lower the nesting depth from 2500 to 1000 to 
prevent hitting a stack overflow bug in the garbage collector.
 2010-10-04 22:26:38 +00:00
Eelco Dolstra
705868a8a9 * Make sure that config.h is included before the system headers, 
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 17:55:38 +00:00
Eelco Dolstra
95f4f2cf61 * If std::tr1::unordered_set is unavailable, use std::set. 2010-10-04 16:16:19 +00:00
Eelco Dolstra
36a23e86b6 * "type -P" isn't portable. 2010-10-04 15:50:08 +00:00
Eelco Dolstra
450837bcc8 * In printMsg(), ignore failing writes to stderr if we're in an 
exception handler, otherwise throw an exception.  We need to ignore
  write errors in exception handlers to ensure that cleanup code runs
  to completion if the other side of stderr has been closed
  unexpectedly.
 2010-10-04 11:23:07 +00:00
Eelco Dolstra
4aa9245083 * Hack needed for GCC 4.3.2 on OpenSolaris. 2010-10-04 10:51:16 +00:00
Eelco Dolstra
923736df38 * Doh. Remove debug message. 2010-09-14 12:47:19 +00:00
Eelco Dolstra
df50916e46 * Oops - "null" was displayed as "true". 2010-08-27 12:10:56 +00:00
Eelco Dolstra
c67eccc26d * nix-build: pass --cores. 2010-08-24 09:21:59 +00:00
Eelco Dolstra
2c8e070e5d * Bump the version number. 2010-08-17 15:39:35 +00:00
Eelco Dolstra
ed133e6e64 * rpmBuild already includes the disk image in the output name. 2010-08-17 14:08:44 +00:00
Eelco Dolstra
2de17f4edc * Update date. 2010-08-17 10:06:26 +00:00
Eelco Dolstra
86f65edf4e * Document --cores in the manual. 2010-08-17 07:22:05 +00:00
Eelco Dolstra
b75e1043a3 * Typo. 2010-08-16 13:23:45 +00:00
Eelco Dolstra
8ec6594d6d * Remove the "tarball" jobset argument. 2010-08-16 13:01:31 +00:00
Eelco Dolstra
12721a3a9a * Nix 0.16 release notes. 2010-08-16 12:38:32 +00:00
Eelco Dolstra
5fb824e896 * Urgh, this was supposed to go in the trunk... 2010-08-12 13:36:56 +00:00
Eelco Dolstra
6846ed8b44 * Make --cores work when building through the Nix daemon. 2010-08-12 09:21:50 +00:00
Eelco Dolstra
750be19ae8 * Remove "auto" and "guess" as synonyms for 0 in the handling of 
build-cores and --cores.  They're superfluous and just complicate
  the parsing.
 2010-08-04 12:23:59 +00:00
Eelco Dolstra
315d8fbd75 * Set the default system filter to "*". This ensures that (for 
instance) "nix-env -i wine" works on x86_64-linux, even though Wine
  is built on i686-linux.  In the event that there are multiple
  matching derivations, prefer those built for the current system.
 2010-08-04 09:32:42 +00:00
Eelco Dolstra
6d6200f37a * Optimisation in the // operator: if one of the sets is empty, return 
the other set.
 2010-08-02 16:31:05 +00:00
Eelco Dolstra
7af6a2fd71 * intersectAttrs: optimise for the case where the second set is larger 
than the first set.  (That's usually the case with callPackage.)
 2010-08-02 11:54:44 +00:00
Eelco Dolstra
532d766c27 * Don't barf if the source NAR for a patch has disappeared. 2010-07-21 11:30:23 +00:00