lix/tests/gc-concurrent.sh
Eelco Dolstra 1328aa3307 * Start of concurrent garbage collection. Processes write temporary
roots to a per-process temporary file in /nix/var/nix/temproots
  while holding a write lock on that file.  The garbage collector
  acquires read locks on all those files, thus blocking further
  progress in other Nix processes, and reads the sets of temporary
  roots.
2005-01-31 10:27:25 +00:00

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storeExpr=$($TOP/src/nix-instantiate/nix-instantiate gc-concurrent.nix)
outPath=$($TOP/src/nix-store/nix-store -q $storeExpr)
ls -l test-tmp/state/temproots
# Start a build in the background.
$TOP/src/nix-store/nix-store -rvv "$storeExpr" &
pid=$!
# Run the garbage collector while the build is running.
sleep 2
$NIX_BIN_DIR/nix-collect-garbage -vvvvv
# Wait for the build to finish.
echo waiting for pid $pid to finish...
wait $pid
# Check that the root and its dependencies haven't been deleted.
cat $outPath/foobar
cat $outPath/input-2/bar