diff options
Diffstat (limited to 'third_party/nix/tests/parallel.sh')
| -rw-r--r-- | third_party/nix/tests/parallel.sh | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/nix/tests/parallel.sh b/third_party/nix/tests/parallel.sh new file mode 100644 index 0000000000..3b7bbe5a22 --- /dev/null +++ b/third_party/nix/tests/parallel.sh @@ -0,0 +1,56 @@ +source common.sh + + +# First, test that -jN performs builds in parallel. +echo "testing nix-build -j..." + +clearStore + +rm -f $_NIX_TEST_SHARED.cur $_NIX_TEST_SHARED.max + +outPath=$(nix-build -j10000 parallel.nix --no-out-link) + +echo "output path is $outPath" + +text=$(cat "$outPath") +if test "$text" != "abacade"; then exit 1; fi + +if test "$(cat $_NIX_TEST_SHARED.cur)" != 0; then fail "wrong current process count"; fi +if test "$(cat $_NIX_TEST_SHARED.max)" != 3; then fail "not enough parallelism"; fi + + +# Second, test that parallel invocations of nix-build perform builds +# in parallel, and don't block waiting on locks held by the others. +echo "testing multiple nix-build -j1..." + +clearStore + +rm -f $_NIX_TEST_SHARED.cur $_NIX_TEST_SHARED.max + +drvPath=$(nix-instantiate parallel.nix --argstr sleepTime 15) + +cmd="nix-store -j1 -r $drvPath" + +$cmd & +pid1=$! +echo "pid 1 is $pid1" + +$cmd & +pid2=$! +echo "pid 2 is $pid2" + +$cmd & +pid3=$! +echo "pid 3 is $pid3" + +$cmd & +pid4=$! +echo "pid 4 is $pid4" + +wait $pid1 || fail "instance 1 failed: $?" +wait $pid2 || fail "instance 2 failed: $?" +wait $pid3 || fail "instance 3 failed: $?" +wait $pid4 || fail "instance 4 failed: $?" + +if test "$(cat $_NIX_TEST_SHARED.cur)" != 0; then fail "wrong current process count"; fi +if test "$(cat $_NIX_TEST_SHARED.max)" != 3; then fail "not enough parallelism"; fi |