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https://github.com/privatevoid-net/nix-super.git
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52 lines
1.2 KiB
Bash
Executable file
52 lines
1.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Test whether the collector is non-blocking, i.e. a build can run in
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# parallel with it.
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source common.sh
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TODO_NixOS
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needLocalStore "the GC test needs a synchronisation point"
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clearStore
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# This FIFO is read just after the global GC lock has been acquired,
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# but before the root server is started.
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fifo1=$TEST_ROOT/test2.fifo
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mkfifo "$fifo1"
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# This FIFO is read just after the roots have been read, but before
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# the actual GC starts.
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fifo2=$TEST_ROOT/test.fifo
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mkfifo "$fifo2"
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dummy=$(nix store add-path ./simple.nix)
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running=$TEST_ROOT/running
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touch $running
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# Start GC.
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(_NIX_TEST_GC_SYNC_1=$fifo1 _NIX_TEST_GC_SYNC_2=$fifo2 nix-store --gc -vvvvv; rm $running) &
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pid=$!
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sleep 2
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# Delay the start of the root server to check that the build below
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# correctly handles ENOENT when connecting to the root server.
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(sleep 1; echo > $fifo1) &
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pid2=$!
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# Start a build. This should not be blocked by the GC in progress.
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outPath=$(nix-build --max-silent-time 60 -o "$TEST_ROOT/result" -E "
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with import ${config_nix};
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mkDerivation {
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name = \"non-blocking\";
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buildCommand = \"set -x; test -e $running; mkdir \$out; echo > $fifo2\";
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}")
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wait $pid
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wait $pid2
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(! test -e $running)
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(! test -e $dummy)
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test -e $outPath
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