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1430 commits

Author SHA1 Message Date
Eelco Dolstra
8c69dac8a1 * Handle error messages from the Nix worker containing the `%' 
character.  (Nix/216)
 2011-04-19 10:44:44 +00:00
Eelco Dolstra
4ba6afaf48 * nix-env -ub' (--prebuilt-only') didn't really work because it 
checked too soon whether substitutes are available.  That is, it did
  so for every available package, rather than those matching installed
  packages.  This was very slow and subject to assertion failures.  So
  do the check much later.  Idem for `nix-env -qab' and `nix-env -ib'.
 2011-04-11 16:27:05 +00:00
Eelco Dolstra
538b7caab0 * Don't allocate a big initial GC address space on machines with 
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.
 2011-02-10 14:31:04 +00:00
Eelco Dolstra
5a6b039802 * Don't call GC_expand_hp unless we're actually using the garbage 
collector.
 2011-02-09 22:59:50 +00:00
Ludovic Courtès
f1462c208b Use $BDW_GC_LIBS instead of a custom variable. 2011-02-09 21:23:13 +00:00
Eelco Dolstra
543988572e * Sync with the trunk. 2011-02-09 12:25:53 +00:00
Eelco Dolstra
aeae0beba4 * Clang compatibility fix. Clang actually checks template definitions 
when they are defined
 2011-02-05 16:29:10 +00:00
Ludovic Courtès
3854fc9b42 Remove useless <config.h> inclusion from public header. 2011-01-14 13:55:58 +00:00
Eelco Dolstra
9db190eb31 * builtins.substring: if "start" is beyond the end of the string, 
return the empty string.
 2011-01-14 12:47:10 +00:00
Eelco Dolstra
c931a7aec5 * Do a short sleep after SQLITE_BUSY. 2010-12-17 17:23:15 +00:00
Eelco Dolstra
b1eb252172 * Propagate the "100" exit status for failed builds through the Nix 
daemon.
 2010-12-17 11:28:26 +00:00
Eelco Dolstra
3dd02580e3 * I forgot to catch SQLiteBusy in registerValidPaths(). So 
registerValidPaths() now handles busy errors and registerValidPath()
  is simply a wrapper around it.
 2010-12-14 13:25:20 +00:00
Eelco Dolstra
d787285af9 * nix-instantiate: return exit status 100 to denote a permanent build 
failure.  The build hook can use this to distinguish between
  transient and permanent failures on the remote side.
 2010-12-13 16:53:23 +00:00
Eelco Dolstra
5833243c92 * Create /nix/var/nix/db if it's missing. 2010-12-13 13:42:34 +00:00
Eelco Dolstra
100becf8d1 * createDirs(path): if path already exists, make sure it's a 
directory.
* Provide a C++ wrapper around lstat().
 2010-12-13 13:32:58 +00:00
Eelco Dolstra
d7ca6f44eb * Update some comments. 2010-12-13 13:19:46 +00:00
Eelco Dolstra
e4720b1a79 * Ignore the result of sqlite3_reset(). 2010-12-08 18:19:15 +00:00
Eelco Dolstra
8062d3af30 * `nix-store --verify --check-contents': don't hold the global GC lock 
while checking the contents, since this operation can take a very
  long time to finish.  Also, fill in missing narSize fields in the DB
  while doing this.
 2010-12-06 15:29:38 +00:00
Eelco Dolstra
de79d23f76 * Retry a transaction if SQLite returns SQLITE_BUSY. This can happen 
even with a very long busy timeout, because SQLITE_BUSY is also
  returned to resolve deadlocks.  This should get rid of random
  "database is locked" errors.  This is kind of hard to test though.
* Fix a horrible bug in deleteFromStore(): deletePathWrapped() should
  be called after committing the transaction, not before, because the
  commit might not succeed.
 2010-12-05 18:23:19 +00:00
Eelco Dolstra
77f7a6d591 * Quick hack around one of the pathological cases in bsdiff 
(namely, when there is a long region of 0s).  On one 86 MiB
  case, this cut patch generation time from 44m to 2m.
 2010-11-29 17:07:04 +00:00
Eelco Dolstra
703e5a2ce2 * Sync with the trunk. 2010-11-25 14:09:13 +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
bdf089f463 * Before a build, show the disk space that the downloaded store paths 
will approximately require.
 2010-11-17 14:31:42 +00:00
Eelco Dolstra
e60c962fb8 * Add an operation `nix-store -q --size'. 2010-11-17 12:40:52 +00:00
Eelco Dolstra
1db6259076 * Implement RemoteStore::queryPathInfo(). 2010-11-17 12:08:01 +00:00
Eelco Dolstra
a3883cbd28 * Store the size of a store path in the database (to be precise, the 
size of the NAR serialisation of the path, i.e., `nix-store --dump
  PATH').  This is useful for Hydra.
 2010-11-16 17:11:46 +00:00
Eelco Dolstra
fb9368b5a0 * Sync with the trunk. 2010-11-16 12:49:47 +00:00
Eelco Dolstra
26def5392f * Document Boehm GC support. 2010-10-29 14:44:02 +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
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
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
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
64fd29855a * Wrap deleteFromStore() in a transaction. Otherwise there might be a 
race with other processes that add new referrers to a path,
  resulting in the garbage collector crashing with "foreign key
  constraint failed".  (Nix/4)
* Make --gc --print-dead etc. interruptible.
 2010-10-14 15:55:51 +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
71dfe4b90b * Sync with the trunk. 2010-10-04 11:44:47 +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