nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-11-25 03:39:36 +01:00
Code Activity
Nix, the purely functional package manager
20536 commits 188 branches 219 tags 162 MiB
Find a file
Eelco Dolstra 3ba103865d Restore fixupBoehmStackPointer 
This was removed in https://github.com/NixOS/nix/pull/11152. However,
we need it for the multi-threaded evaluator, because otherwise Boehm
GC will crash while scanning the thread stack:

  #0  GC_push_all_eager (bottom=<optimized out>, top=<optimized out>) at extra/../mark.c:1488
  #1  0x00007ffff74691d5 in GC_push_all_stack_sections (lo=<optimized out>, hi=<optimized out>, traced_stack_sect=0x0) at extra/../mark_rts.c:704
  #2  GC_push_all_stacks () at extra/../pthread_stop_world.c:876
  #3  GC_default_push_other_roots () at extra/../os_dep.c:2893
  #4  0x00007ffff746235c in GC_mark_some (cold_gc_frame=0x7ffee8ecaa50 "`\304G\367\377\177") at extra/../mark.c:374
  #5  0x00007ffff7465a8d in GC_stopped_mark (stop_func=stop_func@entry=0x7ffff7453c80 <GC_never_stop_func>) at extra/../alloc.c:875
  #6  0x00007ffff7466724 in GC_try_to_collect_inner (stop_func=0x7ffff7453c80 <GC_never_stop_func>) at extra/../alloc.c:624
  #7  0x00007ffff7466a22 in GC_collect_or_expand (needed_blocks=needed_blocks@entry=1, ignore_off_page=ignore_off_page@entry=0, retry=retry@entry=0) at extra/../alloc.c:1688
  #8  0x00007ffff746878f in GC_allocobj (gran=<optimized out>, kind=<optimized out>) at extra/../alloc.c:1798
  #9  GC_generic_malloc_inner (lb=<optimized out>, k=k@entry=1) at extra/../malloc.c:193
  #10 0x00007ffff746cd40 in GC_generic_malloc_many (lb=<optimized out>, k=<optimized out>, result=<optimized out>) at extra/../mallocx.c:477
  #11 0x00007ffff746cf35 in GC_malloc_kind (bytes=120, kind=1) at extra/../thread_local_alloc.c:187
  #12 0x00007ffff796ede5 in nix::allocBytes (n=<optimized out>, n=<optimized out>) at ../src/libexpr/include/nix/expr/eval-inline.hh:19

This is because it will use the stack pointer of the coroutine, so it
will scan a region of memory that doesn't exist, e.g.

  Stack for thread 0x7ffea4ff96c0 is [0x7ffe80197af0w,0x7ffea4ffa000)

(where 0x7ffe80197af0w is the sp of the coroutine and 0x7ffea4ffa000
is the base of the thread stack).

We don't scan coroutine stacks, because currently they don't have GC
roots (there is no evaluation happening in coroutines). So there is
currently no need to restore the other parts of the original patch,
such as BoehmGCStackAllocator.
2025-08-07 12:09:34 +02:00
.github ci: Collect code coverage in tests 2025-08-04 23:50:02 +03:00
ci/gha ci: Collect code coverage in tests 2025-08-04 23:50:02 +03:00
contrib function-trace: always show the trace 2019-09-18 23:23:21 +02:00
doc/manual meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
maintainers meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
misc meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
nix-meson-build-support meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
packaging Merge pull request #13445 from xokdvium/simplify-util-url 2025-08-04 19:46:58 +02:00
scripts meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
src Restore fixupBoehmStackPointer 2025-08-07 12:09:34 +02:00
tests meson: Apply formatting universally 2025-08-07 02:58:29 +03:00
.clang-format Update clang-format with fixing namespace coments, and separate definition blocks 2025-07-18 12:46:51 -04:00
.clang-tidy Add .clang-tidy 2024-02-01 01:01:39 +01:00
.dir-locals.el .dir-locals.el: Set c-block-comment-prefix 2020-07-10 11:21:06 +02:00
.editorconfig No global eval settings in libnixexpr 2024-06-24 12:15:16 -04:00
.git-blame-ignore-revs git-blame-ignore-revs: Add the meson reformatting commit 2025-08-07 03:01:40 +03:00
.gitignore Overriding gtest with gmock 2025-05-31 07:41:27 -07:00
.mergify.yml Update .mergify.yml 2025-07-08 16:18:53 +02:00
.shellcheckrc housekeeping: shellcheck for tests/functional/ca/build-cache.sh 2024-06-12 17:41:16 -04:00
.version Bump version 2025-07-08 16:14:50 +02:00
CITATION.cff chore: PhD thesis as reference in CITATION.cff 2024-05-18 20:05:22 +02:00
CONTRIBUTING.md Update developer facing links to nix.dev 2025-07-25 10:59:44 +02:00
COPYING * Change this to LGPL to keep the government happy. 2006-04-25 16:41:06 +00:00
default.nix Format .nix files 2025-01-24 17:04:02 +01:00
docker.nix Revert "docker: make sure nix config check works" 2025-08-06 20:33:44 +02:00
flake.lock flake.lock: Update 2025-05-15 11:31:34 +02:00
flake.nix ci: Run sanitizer tests in a separate job 2025-07-28 23:37:04 +03:00
HACKING.md Rename doc/manual{src -> source} 2024-10-14 11:21:24 -04:00
meson.build meson: Get rid of multiline array formatting hack 2025-08-07 02:57:02 +03:00
meson.format flake: Add meson formatter 2025-06-11 22:08:03 +00:00
meson.options add derivation parser benchmark 2025-07-29 16:51:55 +02:00
README.md fix(docs): update Matrix channel links 2025-05-04 12:17:48 +02:00
shell.nix Remove url literals 2022-01-24 13:28:21 +01:00

README.md

Nix

Open Collective supporters CI

Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the Nix manual for more details.

Installation and first steps

Visit nix.dev for installation instructions and beginner tutorials.

Full reference documentation can be found in the Nix manual.

Building and developing

Follow instructions in the Nix reference manual to set up a development environment and build Nix from source.

Contributing

Check the contributing guide if you want to get involved with developing Nix.

Additional resources

Nix was created by Eelco Dolstra and developed as the subject of his PhD thesis The Purely Functional Software Deployment Model, published 2006. Today, a world-wide developer community contributes to Nix and the ecosystem that has grown around it.

License

Nix is released under the LGPL v2.1.