io.questdb.cairo.frm.file.ContiguousFileVarFrameColumn Maven / Gradle / Ivy
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* Copyright (c) 2014-2019 Appsicle
* Copyright (c) 2019-2023 QuestDB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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package io.questdb.cairo.frm.file;
import io.questdb.cairo.CairoException;
import io.questdb.cairo.ColumnType;
import io.questdb.cairo.CommitMode;
import io.questdb.cairo.TableUtils;
import io.questdb.cairo.frm.FrameColumn;
import io.questdb.log.Log;
import io.questdb.log.LogFactory;
import io.questdb.std.*;
import io.questdb.std.str.Path;
import static io.questdb.cairo.TableUtils.dFile;
import static io.questdb.cairo.TableUtils.iFile;
public class ContiguousFileVarFrameColumn implements FrameColumn {
private static final Log LOG = LogFactory.getLog(ContiguousFileFixFrameColumn.class);
private static final int MEMORY_TAG = MemoryTag.MMAP_TABLE_WRITER;
private final FilesFacade ff;
private final long fileOpts;
private int columnIndex;
private long columnTop;
private int columnType;
private int fixedFd = -1;
private RecycleBin recycleBin;
private long varAppendOffset = -1;
private int varFd = -1;
private long varLength = -1;
public ContiguousFileVarFrameColumn(FilesFacade ff, long fileOpts) {
this.ff = ff;
this.fileOpts = fileOpts;
}
@Override
public void addTop(long value) {
this.columnTop += value;
}
@Override
public void append(long offset, FrameColumn sourceColumn, long sourceLo, long sourceHi, int commitMode) {
if (sourceColumn.getStorageType() != COLUMN_CONTIGUOUS_FILE) {
throw new UnsupportedOperationException();
}
sourceLo -= sourceColumn.getColumnTop();
sourceHi -= sourceColumn.getColumnTop();
offset -= columnTop;
assert sourceHi >= 0;
assert sourceLo >= 0;
assert offset >= 0;
if (sourceHi > 0) {
long varOffset = getVarOffset(offset);
// Map source offset file, it will be used to copy data from anyway.
long srcFixMapSize = (sourceHi - sourceLo + 1) * Long.BYTES;
final long srcFixAddr = TableUtils.mapAppendColumnBuffer(
ff,
sourceColumn.getSecondaryFd(),
sourceLo * Long.BYTES,
srcFixMapSize,
false,
MEMORY_TAG
);
try {
long varSrcOffset = Unsafe.getUnsafe().getLong(srcFixAddr);
assert (sourceLo == 0 && varSrcOffset == 0) || (sourceLo > 0 && varSrcOffset > 0 && varSrcOffset < 1L << 40);
long copySize = Unsafe.getUnsafe().getLong(srcFixAddr + sourceHi * Long.BYTES) - varSrcOffset;
assert copySize > 0 && copySize < 1L << 40;
TableUtils.allocateDiskSpaceToPage(ff, varFd, varOffset + copySize);
ff.fadvise(sourceColumn.getPrimaryFd(), varSrcOffset, copySize, Files.POSIX_FADV_SEQUENTIAL);
if (ff.copyData(sourceColumn.getPrimaryFd(), varFd, varSrcOffset, varOffset, copySize) != copySize) {
throw CairoException.critical(ff.errno()).put("Cannot copy data [fd=").put(varFd)
.put(", destOffset=").put(varOffset)
.put(", size=").put(copySize)
.put(", fileSize=").put(ff.length(varFd))
.put(", srcFd=").put(sourceColumn.getPrimaryFd())
.put(", srcOffset=").put(varSrcOffset)
.put(", srcFileSize=").put(ff.length(sourceColumn.getPrimaryFd()))
.put(']');
}
long fixedOffset = offset * Long.BYTES;
TableUtils.allocateDiskSpaceToPage(ff, fixedFd, fixedOffset + srcFixMapSize);
long fixAddr = TableUtils.mapAppendColumnBuffer(ff, fixedFd, fixedOffset, srcFixMapSize, true, MEMORY_TAG);
try {
Vect.shiftCopyFixedSizeColumnData(
varSrcOffset - varOffset,
srcFixAddr,
0,
sourceHi,
fixAddr
);
} finally {
TableUtils.mapAppendColumnBufferRelease(ff, fixAddr, fixedOffset, srcFixMapSize, MEMORY_TAG);
}
varAppendOffset = offset + (sourceHi - sourceLo);
varLength = varOffset + copySize;
} finally {
TableUtils.mapAppendColumnBufferRelease(ff, srcFixAddr, sourceLo * Long.BYTES, srcFixMapSize, MEMORY_TAG);
}
if (commitMode != CommitMode.NOSYNC) {
ff.fsync(fixedFd);
ff.fsync(varFd);
}
}
}
@Override
public void appendNulls(long offset, long count, int commitMode) {
offset -= columnTop;
assert offset >= 0;
if (count > 0) {
long varOffset = getVarOffset(offset);
long appendVarSize = count * (ColumnType.isString(columnType) ? Integer.BYTES : Long.BYTES);
TableUtils.allocateDiskSpaceToPage(ff, varFd, varOffset + appendVarSize);
// Set nulls in variable file
long varAddr = TableUtils.mapAppendColumnBuffer(ff, varFd, varOffset, appendVarSize, true, MEMORY_TAG);
try {
Vect.memset(varAddr, appendVarSize, -1);
} finally {
TableUtils.mapAppendColumnBufferRelease(ff, varAddr, varOffset, appendVarSize, MEMORY_TAG);
}
// Set pointers to nulls
long fixedSize = count * Long.BYTES;
long fixedOffset = (offset + 1) * Long.BYTES;
TableUtils.allocateDiskSpaceToPage(ff, fixedFd, fixedOffset + fixedSize);
long fixAddr = TableUtils.mapAppendColumnBuffer(ff, fixedFd, fixedOffset, fixedSize, true, MEMORY_TAG);
try {
if (ColumnType.isString(columnType)) {
Vect.setVarColumnRefs32Bit(fixAddr, varOffset + Integer.BYTES, count);
} else {
Vect.setVarColumnRefs64Bit(fixAddr, varOffset + Long.BYTES, count);
}
} finally {
TableUtils.mapAppendColumnBufferRelease(ff, fixAddr, fixedOffset, fixedSize, MEMORY_TAG);
}
if (commitMode != CommitMode.NOSYNC) {
ff.fsync(fixedFd);
ff.fsync(varFd);
}
}
}
@Override
public void close() {
if (fixedFd != -1) {
ff.close(fixedFd);
fixedFd = -1;
}
if (varFd != -1) {
ff.close(varFd);
varFd = -1;
}
if (recycleBin != null && !recycleBin.isClosed()) {
varAppendOffset = 0;
varLength = 0;
recycleBin.put(this);
}
}
@Override
public int getColumnIndex() {
return columnIndex;
}
@Override
public long getColumnTop() {
return columnTop;
}
@Override
public int getColumnType() {
return columnType;
}
@Override
public int getPrimaryFd() {
return varFd;
}
@Override
public int getSecondaryFd() {
return fixedFd;
}
@Override
public int getStorageType() {
return COLUMN_CONTIGUOUS_FILE;
}
public void ofRO(Path partitionPath, CharSequence columnName, long columnTxn, int columnType, long columnTop, int columnIndex) {
assert fixedFd == -1;
this.columnType = columnType;
this.columnTop = columnTop;
this.columnIndex = columnIndex;
int plen = partitionPath.length();
try {
if (columnTop >= 0) {
dFile(partitionPath, columnName, columnTxn);
this.varFd = TableUtils.openRO(ff, partitionPath.$(), LOG);
partitionPath.trimTo(plen);
iFile(partitionPath, columnName, columnTxn);
this.fixedFd = TableUtils.openRO(ff, partitionPath.$(), LOG);
} else {
// Column does not exist in the partition, don't try to open the file
this.columnTop = -columnTop;
}
} finally {
partitionPath.trimTo(plen);
}
}
public void ofRW(Path partitionPath, CharSequence columnName, long columnTxn, int columnType, long columnTop, int columnIndex) {
assert fixedFd == -1;
// Negative col top means column does not exist in the partition.
// Create it.
columnTop = Math.abs(columnTop);
this.columnType = columnType;
this.columnTop = columnTop;
this.columnIndex = columnIndex;
int plen = partitionPath.length();
try {
dFile(partitionPath, columnName, columnTxn);
this.varFd = TableUtils.openRW(ff, partitionPath.$(), LOG, fileOpts);
partitionPath.trimTo(plen);
iFile(partitionPath, columnName, columnTxn);
this.fixedFd = TableUtils.openRW(ff, partitionPath.$(), LOG, fileOpts);
} finally {
partitionPath.trimTo(plen);
}
}
public void setPool(RecycleBin recycleBin) {
assert this.recycleBin == null;
this.recycleBin = recycleBin;
}
private long getVarOffset(long offset) {
if (varAppendOffset != offset) {
varLength = readVarOffset(fixedFd, offset);
varAppendOffset = offset;
return varLength;
} else {
return varLength;
}
}
private long readVarOffset(int fixedFd, long offset) {
long fixedOffset = offset * Long.BYTES;
long varOffset = offset > 0 ? ff.readNonNegativeLong(fixedFd, fixedOffset) : 0;
if (varOffset < 0 || varOffset > 1L << 40 || (offset > 0 && varOffset == 0)) {
throw CairoException.critical(ff.errno())
.put("Invalid variable file length offset read from offset file [fixedFd=").put(fixedFd)
.put(", offset=").put(fixedOffset)
.put(", fileLen=").put(ff.length(fixedFd))
.put(", result=").put(varOffset)
.put(']');
}
return varOffset;
}
}
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