drinkingtea/nostalgia
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[ox/fs] Fix unnecessary FileStore compacting

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This commit is contained in:
Gary Talent 2019-03-17 22:37:42 -05:00
parent c9d816503d
commit 7a2033da60
1 changed files with 13 additions and 2 deletions
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15
deps/ox/src/ox/fs/filestore/filestoretemplate.hpp vendored
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@ -242,12 +242,13 @@ template<typename size_t>
Error FileStoreTemplate<size_t>::write(InodeId_t id, void *data, FsSize_t dataSize, uint8_t fileType) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Attempting to write to inode" << id;
auto existing = find(id);
// TODO: change to !canWrite(...)
if (canWrite(existing, dataSize)) {
compact();
existing = find(id);
}
if (canWrite(existing, dataSize)) {
if (!canWrite(existing, dataSize)) {
// delete the old node if it exists
if (existing.valid()) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Freeing old version of inode found at offset:" << existing.offset();
@ -263,10 +264,12 @@ Error FileStoreTemplate<size_t>::write(InodeId_t id, void *data, FsSize_t dataSi
auto dest = m_buffer->malloc(dataSize);
// if first malloc failed, compact and try again
if (!dest.valid()) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Allocation failed, compacting";
compact();
dest = m_buffer->malloc(dataSize);
}
if (dest.valid()) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Memory allocated";
dest->id = id;
dest->fileType = fileType;
auto destData = m_buffer->template dataOf<uint8_t>(dest);
@ -274,17 +277,21 @@ Error FileStoreTemplate<size_t>::write(InodeId_t id, void *data, FsSize_t dataSi
// write data if any was provided
if (data != nullptr) {
ox_memcpy(destData, data, dest->size());
oxTrace("ox::fs::FileStoreTemplate::write") << "Data written";
}
auto fsData = fileStoreData();
if (fsData) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Searching for root node at" << fsData->rootNode;
auto root = m_buffer->ptr(fsData->rootNode);
if (root.valid()) {
oxTrace("ox::fs::FileStoreTemplate::write") << "Placing" << dest->id << "on" << root->id << "at" << destData.offset();
return placeItem(dest);
} else {
oxTrace("ox::fs::FileStoreTemplate::write") << "Initializing root inode ( offset:" << dest.offset()
oxTrace("ox::fs::FileStoreTemplate::write") << "Initializing root inode:" << dest->id << "( offset:" << dest.offset()
<< ", data size:" << destData.size() << ")";
fsData->rootNode = dest.offset();
m_buffer->malloc(dataSize);
oxTrace("ox::fs::FileStoreTemplate::write") << "Root inode:" << dest->id;
return OxError(0);
}
} else {
@ -462,6 +469,10 @@ template<typename size_t>
void FileStoreTemplate<size_t>::compact() {
m_buffer->compact([this](uint64_t oldAddr, ItemPtr item) {
if (item.valid()) {
oxTrace("ox::FileStoreTemplate::compact::moveItem")
<< "Moving Item:" << item->id
<< "from" << oldAddr
<< "to" << item.offset();
auto parent = findParent(rootInode(), item);
if (parent.valid()) {
if (parent->left == oldAddr) {