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* rts: COMPACT_NFDATA support for the nonmoving collectorÖmer Sinan Ağacan2019-10-221-0/+2
| | | | | | This largely follows the model used for large objects, with appropriate adjustments made to account for references in the sharing deduplication hashtable.
* rts/Scav: Expose scavenging functionsÖmer Sinan Ağacan2019-10-201-0/+14
| | | | | | | To keep the non-moving collector nicely separated from the moving collector its scavenging phase will live in another file, `NonMovingScav.c`. However, it will need to use these functions so let's expose them.
* Update Wiki URLs to point to GitLabTakenobu Tani2019-03-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | This moves all URL references to Trac Wiki to their corresponding GitLab counterparts. This substitution is classified as follows: 1. Automated substitution using sed with Ben's mapping rule [1] Old: ghc.haskell.org/trac/ghc/wiki/XxxYyy... New: gitlab.haskell.org/ghc/ghc/wikis/xxx-yyy... 2. Manual substitution for URLs containing `#` index Old: ghc.haskell.org/trac/ghc/wiki/XxxYyy...#Zzz New: gitlab.haskell.org/ghc/ghc/wikis/xxx-yyy...#zzz 3. Manual substitution for strings starting with `Commentary` Old: Commentary/XxxYyy... New: commentary/xxx-yyy... See also !539 [1]: https://gitlab.haskell.org/bgamari/gitlab-migration/blob/master/wiki-mapping.json
* Prefer #if defined to #ifdefBen Gamari2017-04-281-1/+1
| | | | Our new CPP linter enforces this.
* cpp: Use #pragma once instead of #ifndef guardsBen Gamari2017-04-231-5/+1
| | | | | | | | | | | | | | This both says what we mean and silences a bunch of spurious CPP linting warnings. This pragma is supported by all CPP implementations which we support. Reviewers: austin, erikd, simonmar, hvr Reviewed By: simonmar Subscribers: rwbarton, thomie Differential Revision: https://phabricator.haskell.org/D3482
* rts: mark scavenge_mutable_list as staticSergei Trofimovich2016-02-071-2/+0
| | | | | | | | | | Noticed by uselex.rb: scavenge_mutable_list: [R]: exported from: ./rts/dist/build/sm/Scav.o scavenge_mutable_list1: [R]: exported from: ./rts/dist/build/sm/Scav.thr_o Signed-off-by: Sergei Trofimovich <siarheit@google.com>
* Revert "rts: add Emacs 'Local Variables' to every .c file"Simon Marlow2014-09-291-8/+0
| | | | This reverts commit 39b5c1cbd8950755de400933cecca7b8deb4ffcd.
* rts: add Emacs 'Local Variables' to every .c fileAustin Seipp2014-07-281-0/+8
| | | | | | | | This will hopefully help ensure some basic consistency in the forward by overriding buffer variables. In particular, it sets the wrap length, the offset to 4, and turns off tabs. Signed-off-by: Austin Seipp <austin@well-typed.com>
* Globally replace "hackage.haskell.org" with "ghc.haskell.org"Simon Marlow2013-10-011-1/+1
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* Fix the symbol visibility pragmasSimon Marlow2010-06-171-2/+2
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* Omit visibility pragmas on Windows (fixes warnings/validate failures)Simon Marlow2009-09-091-2/+2
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* Declare RTS-private prototypes with __attribute__((visibility("hidden")))Simon Marlow2009-08-051-0/+4
| | | | | | | | | | This has no effect with static libraries, but when the RTS is in a shared library it does two things: - it prevents the function from being exposed by the shared library - internal calls to the function can use the faster non-PLT calls, because the function cannot be overriden at link time.
* RTS tidyup sweep, first phaseSimon Marlow2009-08-021-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The first phase of this tidyup is focussed on the header files, and in particular making sure we are exposinng publicly exactly what we need to, and no more. - Rts.h now includes everything that the RTS exposes publicly, rather than a random subset of it. - Most of the public header files have moved into subdirectories, and many of them have been renamed. But clients should not need to include any of the other headers directly, just #include the main public headers: Rts.h, HsFFI.h, RtsAPI.h. - All the headers needed for via-C compilation have moved into the stg subdirectory, which is self-contained. Most of the headers for the rest of the RTS APIs have moved into the rts subdirectory. - I left MachDeps.h where it is, because it is so widely used in Haskell code. - I left a deprecated stub for RtsFlags.h in place. The flag structures are now exposed by Rts.h. - Various internal APIs are no longer exposed by public header files. - Various bits of dead code and declarations have been removed - More gcc warnings are turned on, and the RTS code is more warning-clean. - More source files #include "PosixSource.h", and hence only use standard POSIX (1003.1c-1995) interfaces. There is a lot more tidying up still to do, this is just the first pass. I also intend to standardise the names for external RTS APIs (e.g use the rts_ prefix consistently), and declare the internal APIs as hidden for shared libraries.
* Keep the remembered sets local to each thread during parallel GCSimon Marlow2009-01-121-2/+4
| | | | | | | | | | | | | | | | | | | | | This turns out to be quite vital for parallel programs: - The way we discover which threads to traverse is by finding dirty threads via the remembered sets (aka mutable lists). - A dirty thread will be on the remembered set of the capability that was running it, and we really want to traverse that thread's stack using the GC thread for the capability, because it is in that CPU's cache. If we get this wrong, we get penalised badly by the memory system. Previously we had per-capability mutable lists but they were aggregated before GC and traversed by just one of the GC threads. This resulted in very poor performance particularly for parallel programs with deep stacks. Now we keep per-capability remembered sets throughout GC, which also removes a lock (recordMutableGen_sync).
* Put the contents of Evac.c-inc back in Evac.c, and just compile the file twiceSimon Marlow2008-06-031-1/+5
| | | | Similarly for Scav.c/Scav.c-inc.
* update copyrights in rts/smSimon Marlow2008-04-161-1/+1
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* Initial parallel GC supportSimon Marlow2007-10-311-2/+3
| | | | | | | | | eg. use +RTS -g2 -RTS for 2 threads. Only major GCs are parallelised, minor GCs are still sequential. Don't use more threads than you have CPUs. It works most of the time, although you won't see much speedup yet. Tuning and more work on stability still required.
* Refactoring of the GC in preparation for parallel GCSimon Marlow2007-10-311-5/+2
| | | | | | | | | | | | This patch localises the state of the GC into a gc_thread structure, and reorganises the inner loop of the GC to scavenge one block at a time from global work lists in each "step". The gc_thread structure has a "workspace" for each step, in which it collects evacuated objects until it has a full block to push out to the step's global list. Details of the algorithm will be on the wiki in due course. At the moment, THREADED_RTS does not compile, but the single-threaded GC works (and is 10-20% slower than before).
* copyright updates and add Commentary linksSimon Marlow2006-10-261-0/+5
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* Split GC.c, and move storage manager into sm/ directorySimon Marlow2006-10-241-0/+13
In preparation for parallel GC, split up the monolithic GC.c file into smaller parts. Also in this patch (and difficult to separate, unfortunatley): - Don't include Stable.h in Rts.h, instead just include it where necessary. - consistently use STATIC_INLINE in source files, and INLINE_HEADER in header files. STATIC_INLINE is now turned off when DEBUG is on, to make debugging easier. - The GC no longer takes the get_roots function as an argument. We weren't making use of this generalisation.
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