Functions — github.com/Mic92/fast-nix-gc

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Functions333 in github.com/Mic92/fast-nix-gc

↓ 2 callersFunctionrun_gc_with_early_root

Connect to the gc-socket during the early window (before the graph is loaded), register a root, and let the GC continue.

crates/gc/tests/integration.rs:1210

↓ 2 callersFunctionrusqlite_open

(p: &Path)

crates/optimise/src/optimise.rs:666

↓ 2 callersMethodset_deriver

(&self, out: &Pkg, drv: &Pkg)

crates/gc/tests/integration.rs:115

↓ 2 callersMethodset_registration_time

(&self, p: &Pkg, time: i64)

crates/gc/tests/integration.rs:124

↓ 2 callersFunctionstore_listing

Store entries on disk, excluding internal `.links`/lock files.

scripts/compare-dry-run.py:156

↓ 2 callersFunctiontry_lock_dir

Lock a `tmp-*` build dir before deleting. None means a builder still holds it. Caller keeps the fd through deletion to avoid a TOCTOU race.

crates/gc/src/gc.rs:73

↓ 2 callersFunctionunshare_mount_namespace

()

crates/common/src/lib.rs:21

↓ 2 callersMethodwrite_root

(&mut self, store_path: &str)

crates/common/src/temp_roots.rs:102

↓ 1 callersFunctionaccept_loop

( listener: UnixListener, store_prefix: String, live: Arc<LiveSet>, graph: Arc<StoreGraph>,

crates/gc/src/gc_socket.rs:275

↓ 1 callersFunctionacquire_gc_lock

Same lock Nix takes. Builders hold it shared while registering temp roots; we take it exclusive so the root set can't change under us.

crates/gc/src/gc.rs:95

↓ 1 callersFunctionapply_corruptions

Apply random corruptions.

difftest/src/main.rs:306

↓ 1 callersMethodcancel

Unblock every waiting protect(): used on GC teardown, where an error path may leave pending nodes that will never finish.

crates/gc/src/gc_socket.rs:176

↓ 1 callersFunctioncli_main

()

crates/optimise/src/optimise.rs:499

↓ 1 callersFunctioncompare_gc

Compare nix-store --gc and fast-nix-gc on the store under `<tmp>/nix`. Corruption-affected paths are excluded from the set comparisons and validated s

difftest/src/main.rs:618

↓ 1 callersFunctiondep_list

(nodes: &[Node], node: &Node)

difftest/src/main.rs:148

↓ 1 callersFunctiondir_mutex

Sharded mutex pool keyed by parent directory. Bounds memory while keeping contention low for typical fan-out.

crates/optimise/src/optimise.rs:157

↓ 1 callersFunctionedit_distance

(a: &str, b: &str)

crates/common/src/lib.rs:141

↓ 1 callersMethodenabled

(&self, m: &log::Metadata)

crates/common/src/logging.rs:9

↓ 1 callersFunctionexpr

(fod_rec_hash: str)

scripts/compare-dry-run.py:58

↓ 1 callersFunctionfake_hash

(i: usize)

proptest/proptest_gc.rs:16

↓ 1 callersFunctionfilesystem_bytes

Free and total bytes on the filesystem containing `path`.

crates/gc/src/main.rs:74

↓ 1 callersFunctionfind_binary

Locate the fast-nix-gc binary: $FAST_NIX_GC or next to our own exe.

difftest/src/main.rs:469

↓ 1 callersFunctionfind_roots_in_dir

( dir: &Path, store_prefix: &str, idx: &BasenameIndex, roots: &mut HashSet<u32>, )

crates/gc/src/roots.rs:61

↓ 1 callersFunctiongen_graph

(rng: &mut StdRng, keep_outputs: bool)

difftest/src/main.rs:74

↓ 1 callersFunctiongen_graph

Random DAG: node i only references nodes < i, so closures are acyclic.

crates/gc/tests/socket_concurrency.rs:28

↓ 1 callersFunctiongraph

(paths: &[&str])

crates/gc/src/roots.rs:751

↓ 1 callersFunctionhandle_client

( stream: UnixStream, store_prefix: &str, live: &LiveSet, graph: &StoreGraph, idx: &HashMa

crates/gc/src/gc_socket.rs:334

↓ 1 callersFunctionis_store_path_basename

True if `name` matches the store-path basename grammar: `<nix32hash>-<name>` where the hash is 32 chars of `[0-9a-z]`.

crates/gc/src/roots.rs:202

↓ 1 callersFunctionis_store_path_char

True for chars allowed in a Nix store path basename. Mirrors Nix's storePathRegex: `[0-9a-z]+[0-9a-zA-Z+\-._?=]*`. We accept the union since we extrac

crates/gc/src/roots.rs:216

↓ 1 callersFunctioniteration

(binary: &Path, seed: u64)

difftest/src/main.rs:752

↓ 1 callersFunctionkern_argmax

()

crates/gc/src/roots.rs:634

↓ 1 callersFunctionlibc_emlink

()

crates/optimise/src/optimise.rs:316

↓ 1 callersFunctionlibc_enospc

()

crates/optimise/src/optimise.rs:313

↓ 1 callersFunctionlist_pids

()

crates/gc/src/roots.rs:450

↓ 1 callersMethodload_graph_in_txn

(&self)

crates/common/src/db.rs:108

↓ 1 callersFunctionmain

()

scripts/check-alloy.py:13

↓ 1 callersFunctionmain

()

scripts/mkstore.py:46

↓ 1 callersFunctionmain

()

scripts/compare-dry-run.py:183

↓ 1 callersMethodmake_writable

(&self)

crates/optimise/benches/optimise_bench.rs:99

↓ 1 callersMethodmaybe_vacuum

VACUUM if enough of the file is free pages to be worth a full rewrite: at least a quarter of the file and at least 64 pages (256 KiB at the default pa

crates/common/src/db.rs:387

↓ 1 callersFunctionnix_config

(rng: &mut StdRng, keep_outputs: bool)

difftest/src/main.rs:230

↓ 1 callersFunctionnormalize_dir

Strip trailing slashes (but keep a bare "/").

crates/common/src/db.rs:407

↓ 1 callersMethodnotify_gc

Send the root to the running GC; Ok(false) means the GC went away and the caller should restart with the lock.

crates/common/src/temp_roots.rs:110

↓ 1 callersFunctionone_run

(seed: u64)

crates/gc/tests/socket_concurrency.rs:114

↓ 1 callersFunctionoptimise_file

( path: PathBuf, meta: fs::Metadata, links_dir: Arc<PathBuf>, store_dir: Arc<PathBuf>, opt

crates/optimise/src/optimise.rs:180

↓ 1 callersFunctionparse_args

()

crates/gc/src/main.rs:84

↓ 1 callersFunctionparse_args

()

crates/optimise/src/optimise.rs:547

↓ 1 callersFunctionparse_bool

(s: &[u8])

crates/common/src/nix_config.rs:39

↓ 1 callersFunctionparse_size

Parse a size like "50G", "512M", "1024K", or plain bytes.

crates/gc/src/main.rs:57

↓ 1 callersFunctionpid_cwd_root

(pid: i32, store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:486

↓ 1 callersFunctionpid_environ

(pid: i32, argmax: usize, store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:610

↓ 1 callersFunctionpid_exe

(pid: i32, store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:472

↓ 1 callersFunctionpid_fds

(pid: i32, store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:512

↓ 1 callersFunctionpid_regions

(pid: i32, store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:569

↓ 1 callersMethodprotect

Mark the closure of `basename` as protected and wait until none of it is still being deleted.

crates/gc/src/gc_socket.rs:139

↓ 1 callersMethodprotect_unknown_basename

Mark a basename outside the graph as protected (used to carry over roots received before the graph was loaded).

crates/gc/src/gc_socket.rs:91

↓ 1 callersMethodprotected_snapshot

Snapshot of per-node protection flags (dry-run reporting).

crates/gc/src/gc_socket.rs:80

↓ 1 callersFunctionrender_expr

(nodes: &[Node], src_dir: &Path)

difftest/src/main.rs:163

↓ 1 callersFunctionreplace_with_link

Replace `path` with a hardlink to `link_path`. Store dirs are read-only with mtime 1; toggle writable around the rename and restore afterwards. Holds

crates/optimise/src/optimise.rs:87

↓ 1 callersFunctionresolve_indirect_root

Indirect root: symlink -> symlink -> store. Nix's findRoots resolves at most one extra hop. Resolve it with lstat + readlink, never a following stat()

crates/gc/src/roots.rs:122

↓ 1 callersFunctionrun_client

crates/gc/tests/socket_concurrency.rs:86

↓ 1 callersFunctionrun_deleter

Mirror of the gc.rs deletion loop: claim a chunk, drop the closures of skipped (protected) paths, then unlink each claimed node.

crates/gc/tests/socket_concurrency.rs:52

↓ 1 callersFunctionscan

(store_prefix: &str, unchecked: &mut HashSet<String>)

crates/gc/src/roots.rs:288

↓ 1 callersFunctionscopeguard

(dir: &Path, active: bool)

crates/optimise/src/optimise.rs:151

↓ 1 callersFunctionset_link_mtime

(path: &Path, t: SystemTime)

crates/gc/src/profiles.rs:368

↓ 1 callersFunctionset_mtime_to_one

(path: &Path)

crates/optimise/src/optimise.rs:167

↓ 1 callersMethodtarget_bytes

(self, total: u64)

crates/gc/src/main.rs:31

↓ 1 callersMethodtry_begin_delete_unknown

Same as `try_begin_delete_node` for paths not in the graph.

crates/gc/src/gc_socket.rs:121

↓ 1 callersFunctionvalidate_fast_alone

When Nix cannot GC the corrupted store at all, check fast-nix-gc on its own: it must run, its real GC must match its dry-run prediction, and disk must

difftest/src/main.rs:574

Methodacquire

(profile: &Path)

crates/gc/src/profiles.rs:98

Functionadd_uses_gc_socket_when_gc_holds_the_lock

()

crates/common/src/temp_roots.rs:182

Functionadd_writes_nul_terminated_roots

()

crates/common/src/temp_roots.rs:164

Methodalive

Fixpoint reachability over the modeled liveness edges, mirroring the keep-derivations/keep-outputs rules from the GC's perspective.

fuzz/fuzz_targets/gc_graph.rs:165

Functionbasename

(i: usize)

crates/gc/tests/socket_concurrency.rs:23

Functionbasename_index_lookups

()

crates/common/src/db.rs:876

Functionbasename_of

(i: usize)

fuzz/fuzz_targets/gc_graph.rs:79

Functioncanonical_file_is_not_counted_as_linked

()

crates/optimise/src/optimise.rs:853

Functionclaim_nodes_partitions_and_blocks_protect

()

crates/gc/src/gc_socket.rs:510

Functionclean_links_removes_only_unreferenced

()

crates/gc/src/gc.rs:675

Functioncompute_closure_marks_reachable_only

()

crates/common/src/db.rs:892

Functionconcurrent_clients_never_resurrect_deleted_paths

()

crates/gc/tests/socket_concurrency.rs:155

Functioncorrupt_link_with_size_mismatch_is_skipped

()

crates/optimise/src/optimise.rs:829

Functioncurrent_generation_none_when_missing

()

crates/gc/src/profiles.rs:499

Functiondedups_identical_files

()

crates/optimise/src/optimise.rs:611

Methoddefault

()

crates/optimise/src/optimise.rs:42

Functiondelete_generations_older_than_cutoff

()

crates/gc/src/profiles.rs:396

Functiondelete_old_generations_keeps_only_current

()

crates/gc/src/profiles.rs:384

Functiondelete_store_path_file_reports_disk_blocks

()

crates/gc/src/gc.rs:637

Functiondelete_store_path_missing_is_zero

()

crates/gc/src/gc.rs:622

Functiondelete_store_path_other_stat_errors_propagate

()

crates/gc/src/gc.rs:628

Functiondelete_store_path_removes_readonly_tree

()

crates/gc/src/gc.rs:648

Functiondeleted_count

Parse "<N> store paths deleted" from fast-nix-gc stdout.

crates/gc/benches/gc_bench.rs:143

Methoddrop

(&mut self)

difftest/src/main.rs:392

Methoddrop

(&mut self)

crates/gc/src/profiles.rs:133

Methoddrop

(&mut self)

crates/gc/src/gc_socket.rs:254

Methoddrop

(&mut self)

crates/optimise/src/optimise.rs:144

Functiondrop_joins_handlers_and_snapshot_sees_acked_roots

()

crates/gc/src/gc_socket.rs:542

Functiondrop_returns_when_idle_accept_loop_is_waiting

()

crates/gc/src/gc_socket.rs:392

Functiondry_run_counts_but_does_not_link

()

crates/optimise/src/optimise.rs:789

Functiondry_run_takes_no_temp_roots

()

crates/optimise/src/optimise.rs:910

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