Logs the number of storages kept alive by fastboot (#34667)
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@ -104,12 +104,21 @@ impl AccountsHashVerifier {
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));
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if let Some(snapshot_storages_for_fastboot) = snapshot_storages_for_fastboot {
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let num_storages = snapshot_storages_for_fastboot.len();
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// Get the number of storages that are being kept alive for fastboot.
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// Looking at the storage Arc's strong reference count, we know that one
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// ref is for fastboot, and one ref is for snapshot packaging. If there
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// are no others, then the storage will be kept alive because of fastboot.
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let num_storages_kept_alive = snapshot_storages_for_fastboot
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.iter()
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.filter(|storage| Arc::strong_count(storage) == 2)
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.count();
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let num_storages_total = snapshot_storages_for_fastboot.len();
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fastboot_storages = Some(snapshot_storages_for_fastboot);
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datapoint_info!(
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"fastboot",
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("slot", slot, i64),
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("num_storages", num_storages, i64),
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("num_storages_total", num_storages_total, i64),
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("num_storages_kept_alive", num_storages_kept_alive, i64),
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);
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}
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