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* Increase the sleep periods a bit to make the test less likely to 

fail on slow machines.  Of course it would be better if this test
  wasn't timing dependent...
This commit is contained in:
Eelco Dolstra 2008-08-14 09:26:30 +00:00
parent 5664b6d7ba
commit c03b729319
4 changed files with 17 additions and 16 deletions
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4
src/libstore/gc.cc
View File

@ -638,10 +638,6 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
else else
tempRootsClosed.insert(*i); tempRootsClosed.insert(*i);
/* For testing - see tests/gc-concurrent.sh. */
if (getenv("NIX_DEBUG_GC_WAIT"))
sleep(2);
/* After this point the set of roots or temporary roots cannot /* After this point the set of roots or temporary roots cannot
increase, since we hold locks on everything. So everything increase, since we hold locks on everything. So everything
that is not currently in in `livePaths' or `tempRootsClosed' that is not currently in in `livePaths' or `tempRootsClosed'

7
tests/gc-concurrent.builder.sh
View File

@ -1,8 +1,11 @@
mkdir $out mkdir $out
echo $(cat $input1/foo)$(cat $input2/bar) > $out/foobar echo $(cat $input1/foo)$(cat $input2/bar) > $out/foobar
sleep 5 sleep 10
mkdir $out || true
# $out should not have been GC'ed while we were sleeping, but just in
# case...
mkdir -p $out
# Check that the GC hasn't deleted the lock on our output. # Check that the GC hasn't deleted the lock on our output.
test -e "$out.lock" test -e "$out.lock"

20
tests/gc-concurrent.sh
View File

@ -1,5 +1,7 @@
source common.sh source common.sh
$NIX_BIN_DIR/nix-collect-garbage -vvvvv
drvPath1=$($nixinstantiate gc-concurrent.nix) drvPath1=$($nixinstantiate gc-concurrent.nix)
outPath1=$($nixstore -q $drvPath1) outPath1=$($nixstore -q $drvPath1)
@ -13,15 +15,13 @@ ln -s $drvPath2 "$NIX_STATE_DIR"/gcroots/foo
$nixstore -rvv "$drvPath1" & $nixstore -rvv "$drvPath1" &
pid1=$! pid1=$!
# Start build #2 in the background after 3 seconds. # Start build #2 in the background after 6 seconds.
(sleep 3 && $nixstore -rvv "$drvPath2") & (sleep 6 && $nixstore -rvv "$drvPath2") &
pid2=$! pid2=$!
# Run the garbage collector while the build is running. Note: the GC # Run the garbage collector while the build is running.
# sleeps for *another* 2 seconds after acquiring the GC lock. This sleep 4
# checks whether build #1 $NIX_BIN_DIR/nix-collect-garbage -vvvvv
sleep 2
NIX_DEBUG_GC_WAIT=1 $NIX_BIN_DIR/nix-collect-garbage -vvvvv
# Wait for build #1/#2 to finish. # Wait for build #1/#2 to finish.
echo waiting for pid $pid1 to finish... echo waiting for pid $pid1 to finish...
@ -30,11 +30,13 @@ echo waiting for pid $pid2 to finish...
wait $pid2 wait $pid2
# Check that the root of build #1 and its dependencies haven't been # Check that the root of build #1 and its dependencies haven't been
# deleted. # deleted. The should not be deleted by the GC because they were
# being built during the GC.
cat $outPath1/foobar cat $outPath1/foobar
cat $outPath1/input-2/bar cat $outPath1/input-2/bar
# Build #2 should have failed because its derivation got garbage collected. # Check that build #2 has succeeded. It should succeed because the
# derivation is a GC root.
cat $outPath2/foobar cat $outPath2/foobar
rm "$NIX_STATE_DIR"/gcroots/foo rm "$NIX_STATE_DIR"/gcroots/foo

2
tests/gc-concurrent2.builder.sh
View File

@ -4,4 +4,4 @@ echo $(cat $input1/foo)$(cat $input2/bar)xyzzy > $out/foobar
# Check that the GC hasn't deleted the lock on our output. # Check that the GC hasn't deleted the lock on our output.
test -e "$out.lock" test -e "$out.lock"
sleep 3 sleep 6