private void applyChildrenChangeEvents(VirtualFile parent, List<VFileEvent> events) {
final NewVirtualFileSystem delegate = getDelegate(parent);
TIntArrayList childrenIdsUpdated = new TIntArrayList();
List<VirtualFile> childrenToBeUpdated = new SmartList<VirtualFile>();
assert parent != null && parent != mySuperRoot;
final int parentId = getFileId(parent);
assert parentId != 0;
TIntHashSet parentChildrenIds = new TIntHashSet(FSRecords.list(parentId));
boolean hasRemovedChildren = false;
for (VFileEvent event : events) {
if (event instanceof VFileCreateEvent) {
String name = ((VFileCreateEvent) event).getChildName();
final VirtualFile fake = new FakeVirtualFile(parent, name);
final FileAttributes attributes = delegate.getAttributes(fake);
if (attributes != null) {
final int childId = createAndFillRecord(delegate, fake, parentId, attributes);
assert parent instanceof VirtualDirectoryImpl : parent;
final VirtualDirectoryImpl dir = (VirtualDirectoryImpl) parent;
VirtualFileSystemEntry child = dir.createChild(name, childId, dir.getFileSystem());
childrenToBeUpdated.add(child);
childrenIdsUpdated.add(childId);
parentChildrenIds.add(childId);
}
} else if (event instanceof VFileDeleteEvent) {
VirtualFile file = ((VFileDeleteEvent) event).getFile();
if (!file.exists()) {
LOG.error("Deleting a file, which does not exist: " + file.getPath());
continue;
}
hasRemovedChildren = true;
int id = getFileId(file);
childrenToBeUpdated.add(file);
childrenIdsUpdated.add(-id);
parentChildrenIds.remove(id);
}
}
FSRecords.updateList(parentId, parentChildrenIds.toArray());
if (hasRemovedChildren) clearIdCache();
VirtualDirectoryImpl parentImpl = (VirtualDirectoryImpl) parent;
for (int i = 0, len = childrenIdsUpdated.size(); i < len; ++i) {
final int childId = childrenIdsUpdated.get(i);
final VirtualFile childFile = childrenToBeUpdated.get(i);
if (childId > 0) {
parentImpl.addChild((VirtualFileSystemEntry) childFile);
} else {
FSRecords.deleteRecordRecursively(-childId);
parentImpl.removeChild(childFile);
invalidateSubtree(childFile);
}
}
}
@Nullable
private VirtualFileSystemEntry findFileById(
int id, boolean cachedOnly, TIntArrayList visited, int mask) {
VirtualFileSystemEntry cached = myIdToDirCache.get(id);
if (cached != null) return cached;
if (visited != null
&& (visited.size() >= DEPTH_LIMIT || (mask & id) == id && visited.contains(id))) {
@NonNls
String sb =
"Dead loop detected in persistent FS (id=" + id + " cached-only=" + cachedOnly + "):";
for (int i = 0; i < visited.size(); i++) {
int _id = visited.get(i);
sb +=
"\n "
+ _id
+ " '"
+ getName(_id)
+ "' "
+ String.format("%02x", getFileAttributes(_id))
+ ' '
+ myIdToDirCache.containsKey(_id);
}
LOG.error(sb);
return null;
}
int parentId = getParent(id);
if (parentId >= id) {
if (visited == null) visited = new TIntArrayList(DEPTH_LIMIT);
}
if (visited != null) visited.add(id);
VirtualFileSystemEntry result;
if (parentId == 0) {
myRootsLock.readLock().lock();
try {
result = myRootsById.get(id);
} finally {
myRootsLock.readLock().unlock();
}
} else {
VirtualFileSystemEntry parentFile = findFileById(parentId, cachedOnly, visited, mask | id);
if (parentFile instanceof VirtualDirectoryImpl) {
result = ((VirtualDirectoryImpl) parentFile).findChildById(id, cachedOnly);
} else {
result = null;
}
}
if (result != null && result.isDirectory()) {
VirtualFileSystemEntry old = myIdToDirCache.put(id, result);
if (old != null) result = old;
}
return result;
}
@NotNull
private FSRecords.NameId[] persistAllChildren(
@NotNull final VirtualFile file, final int id, @NotNull FSRecords.NameId[] current) {
assert file != mySuperRoot;
final NewVirtualFileSystem fs = replaceWithNativeFS(getDelegate(file));
String[] delegateNames = VfsUtil.filterNames(fs.list(file));
if (delegateNames.length == 0 && current.length > 0) {
return current;
}
Set<String> toAdd = ContainerUtil.newHashSet(delegateNames);
for (FSRecords.NameId nameId : current) {
toAdd.remove(nameId.name);
}
final TIntArrayList childrenIds = new TIntArrayList(current.length + toAdd.size());
final List<FSRecords.NameId> nameIds =
ContainerUtil.newArrayListWithExpectedSize(current.length + toAdd.size());
for (FSRecords.NameId nameId : current) {
childrenIds.add(nameId.id);
nameIds.add(nameId);
}
for (String newName : toAdd) {
FakeVirtualFile child = new FakeVirtualFile(file, newName);
FileAttributes attributes = fs.getAttributes(child);
if (attributes != null) {
int childId = createAndFillRecord(fs, child, id, attributes);
childrenIds.add(childId);
nameIds.add(new FSRecords.NameId(childId, FileNameCache.storeName(newName), newName));
}
}
FSRecords.updateList(id, childrenIds.toNativeArray());
setChildrenCached(id);
return nameIds.toArray(new FSRecords.NameId[nameIds.size()]);
}
private void queueUnresolvedFilesSinceLastRestart() {
PersistentFS fs = PersistentFS.getInstance();
int maxId = FSRecords.getMaxId();
TIntArrayList list = new TIntArrayList();
for (int id = fileIsResolved.nextClearBit(1);
id >= 0 && id < maxId;
id = fileIsResolved.nextClearBit(id + 1)) {
int nextSetBit = fileIsResolved.nextSetBit(id);
int endOfRun = Math.min(maxId, nextSetBit == -1 ? maxId : nextSetBit);
do {
VirtualFile virtualFile = fs.findFileById(id);
if (queueIfNeeded(virtualFile, myProject)) {
list.add(id);
} else {
fileIsResolved.set(id);
}
} while (++id < endOfRun);
}
log("Initially added to resolve " + toVfString(list.toNativeArray()));
}
private void storeIds(@NotNull ConcurrentIntObjectMap<int[]> fileToForwardIds) {
int forwardSize = 0;
int backwardSize = 0;
final TIntObjectHashMap<TIntArrayList> fileToBackwardIds =
new TIntObjectHashMap<TIntArrayList>(fileToForwardIds.size());
for (ConcurrentIntObjectMap.IntEntry<int[]> entry : fileToForwardIds.entries()) {
int fileId = entry.getKey();
int[] forwardIds = entry.getValue();
forwardSize += forwardIds.length;
for (int forwardId : forwardIds) {
TIntArrayList backIds = fileToBackwardIds.get(forwardId);
if (backIds == null) {
backIds = new TIntArrayList();
fileToBackwardIds.put(forwardId, backIds);
}
backIds.add(fileId);
backwardSize++;
}
}
log("backwardSize = " + backwardSize);
log("forwardSize = " + forwardSize);
log("fileToForwardIds.size() = " + fileToForwardIds.size());
log("fileToBackwardIds.size() = " + fileToBackwardIds.size());
assert forwardSize == backwardSize;
// wrap in read action so that sudden quit (in write action) would not interrupt us
myApplication.runReadAction(
() -> {
if (!myApplication.isDisposed()) {
fileToBackwardIds.forEachEntry(
new TIntObjectProcedure<TIntArrayList>() {
@Override
public boolean execute(int fileId, TIntArrayList backIds) {
storage.addAll(fileId, backIds.toNativeArray());
return true;
}
});
}
});
}