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nix/tests/gc-non-blocking.sh

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Add a test for the non-blocking GC
2021-10-15 10:52:37 -04:00
# Test whether the collector is non-blocking, i.e. a build can run in
# parallel with it.
source common.sh
needLocalStore "the GC test needs a synchronisation point"
clearStore
fifo=$TEST_ROOT/test.fifo
mkfifo "$fifo"
LocalStore::addTempRoot(): Handle ENOENT If the garbage collector has acquired the global GC lock, but hasn't created the GC socket yet, then a client attempting to connect would get ENOENT. Note that this only happens when the GC runs for the first time on a machine. Subsequently clients will get ECONNREFUSED which was already handled. Fixes #7370.
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fifo2=$TEST_ROOT/test2.fifo
mkfifo "$fifo2"
Add a test for the non-blocking GC
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dummy=$(nix store add-path ./simple.nix)
running=$TEST_ROOT/running
touch $running
LocalStore::addTempRoot(): Handle ENOENT If the garbage collector has acquired the global GC lock, but hasn't created the GC socket yet, then a client attempting to connect would get ENOENT. Note that this only happens when the GC runs for the first time on a machine. Subsequently clients will get ECONNREFUSED which was already handled. Fixes #7370.
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(_NIX_TEST_GC_SYNC=$fifo _NIX_TEST_GC_SYNC_2=$fifo2 nix-store --gc -vvvvv; rm $running) &
Add a test for the non-blocking GC
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pid=$!
sleep 2
LocalStore::addTempRoot(): Handle ENOENT If the garbage collector has acquired the global GC lock, but hasn't created the GC socket yet, then a client attempting to connect would get ENOENT. Note that this only happens when the GC runs for the first time on a machine. Subsequently clients will get ECONNREFUSED which was already handled. Fixes #7370.
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(sleep 1; echo > $fifo2) &
gc-non-blocking.sh: Don't hang indefinitely if the GC roots server crashes
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outPath=$(nix-build --max-silent-time 60 -o "$TEST_ROOT/result" -E "
Add a test for the non-blocking GC
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with import ./config.nix;
mkDerivation {
name = \"non-blocking\";
buildCommand = \"set -x; test -e $running; mkdir \$out; echo > $fifo\";
}")
wait $pid
(! test -e $running)
(! test -e $dummy)
test -e $outPath
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