nix/tests/locking.sh

storeExpr=$($TOP/src/nix-instantiate/nix-instantiate locking.nix)

echo "store expr is $storeExpr"

for i in $(seq 1 5); do
    echo "WORKER $i"
    $TOP/src/nix-store/nix-store -rvvvvvB "$storeExpr" &
done

sleep 5

outPath=$($TOP/src/nix-store/nix-store -qnfvvvvv "$storeExpr")

echo "output path is $outPath"

text=$(cat "$outPath")
if test "$text" != "aabcade"; then exit 1; fi
* 1000th revision! * A test to verify that locking of output paths (caused by concurrent invocations of Nix) works correctly. 2004-05-04 13:56:30 +00:00			`storeExpr=$($TOP/src/nix-instantiate/nix-instantiate locking.nix)`

			`echo "store expr is $storeExpr"`

			`for i in $(seq 1 5); do`
			`echo "WORKER $i"`
* True parallel builds. Nix can now run as many build jobs in parallel as possible (similar to GNU Make's `-j' switch). This is useful on SMP systems, but it is especially useful for doing builds on multiple machines. The idea is that a large derivation is initiated on one master machine, which then distributes sub-derivations to any number of slave machines. This should not happen synchronously or in lock-step, so the master must be capable of dealing with multiple parallel build jobs. We now have the infrastructure to support this. TODO: substitutes are currently broken. 2004-05-11 18:05:44 +00:00			`$TOP/src/nix-store/nix-store -rvvvvvB "$storeExpr" &`
* 1000th revision! * A test to verify that locking of output paths (caused by concurrent invocations of Nix) works correctly. 2004-05-04 13:56:30 +00:00			`done`

			`sleep 5`

			`outPath=$($TOP/src/nix-store/nix-store -qnfvvvvv "$storeExpr")`

			`echo "output path is $outPath"`

			`text=$(cat "$outPath")`
			`if test "$text" != "aabcade"; then exit 1; fi`