org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReaderIoStats.java

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package org.eclipse.jgit.internal.storage.dfs;

/** IO statistics for a {@link DfsReader}. */
public class DfsReaderIoStats {
	/** POJO to accumulate IO statistics. */
	public static class Accumulator {
		/** Number of times the reader explicitly called scanPacks. */
		long scanPacks;

		/** Total number of complete pack indexes read into memory. */
		long readIdx;

		/** Total number of complete bitmap indexes read into memory. */
		long readBitmap;

		/** Total number of bytes read from indexes. */
		long readIdxBytes;

		/** Total microseconds spent reading pack or bitmap indexes. */
		long readIdxMicros;

		/** Total number of block cache hits. */
		long blockCacheHit;

		/** Total number of discrete blocks read from pack file(s). */
		long readBlock;

		/** Total number of compressed bytes read as block sized units. */
		long readBlockBytes;

		/** Total microseconds spent reading {@link #readBlock} blocks. */
		long readBlockMicros;

		/** Total number of bytes decompressed. */
		long inflatedBytes;

		Accumulator() {
		}
	}

	private final Accumulator stats;

	DfsReaderIoStats(Accumulator stats) {
		this.stats = stats;
	}

	/** @return number of times the reader explicitly called scanPacks. */
	public long getScanPacks() {
		return stats.scanPacks;
	}

	/** @return total number of complete pack indexes read into memory. */
	public long getReadPackIndexCount() {
		return stats.readIdx;
	}

	/** @return total number of complete bitmap indexes read into memory. */
	public long getReadBitmapIndexCount() {
		return stats.readBitmap;
	}

	/** @return total number of bytes read from indexes. */
	public long getReadIndexBytes() {
		return stats.readIdxBytes;
	}

	/** @return total microseconds spent reading pack or bitmap indexes. */
	public long getReadIndexMicros() {
		return stats.readIdxMicros;
	}

	/** @return total number of block cache hits. */
	public long getBlockCacheHits() {
		return stats.blockCacheHit;
	}

	/** @return total number of discrete blocks read from pack file(s). */
	public long getReadBlocksCount() {
		return stats.readBlock;
	}

	/** @return total number of compressed bytes read as block sized units. */
	public long getReadBlocksBytes() {
		return stats.readBlockBytes;
	}

	/** @return total microseconds spent reading blocks. */
	public long getReadBlocksMicros() {
		return stats.readBlockMicros;
	}

	/** @return total number of bytes decompressed. */
	public long getInflatedBytes() {
		return stats.inflatedBytes;
	}
}