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fix better

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This commit is contained in:
KinderRiven 2022-06-06 01:29:49 +08:00
parent ae86f7ceaa
commit d9684daa6f
4 changed files with 68 additions and 8 deletions
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39
src/Common/FileCache.cpp
View File

@ -117,6 +117,9 @@ void LRUFileCache::useCell(
{
/// Move to the end of the queue. The iterator remains valid.
queue.moveToEnd(*cell.queue_iterator, cache_lock);
if (auto query_context = getQueryContext(cell.file_segment->getQueryId(), cache_lock))
query_context->use(cell.file_segment->key(), cell.file_segment->offset(), cache_lock);
}
}
@ -485,7 +488,7 @@ FileSegmentsHolder LRUFileCache::setDownloading(const Key & key, size_t offset,
return FileSegmentsHolder(std::move(file_segments));
}
LRUFileCache::QueryContextPtr LRUFileCache::getCurrentQueryContext() const
LRUFileCache::QueryContextPtr LRUFileCache::getCurrentQueryContext(std::lock_guard<std::mutex> &) const
{
if (!isQueryInitialized())
return nullptr;
@ -494,9 +497,15 @@ LRUFileCache::QueryContextPtr LRUFileCache::getCurrentQueryContext() const
return (query_iter == query_map.end()) ? nullptr : query_iter->second;
}
LRUFileCache::QueryContextPtr LRUFileCache::getQueryContext(const String & query_id, std::lock_guard<std::mutex> &) const
{
auto query_iter = query_map.find(query_id);
return (query_iter == query_map.end()) ? nullptr : query_iter->second;
}
bool LRUFileCache::tryReserve(const Key & key, size_t offset, size_t size, std::lock_guard<std::mutex> & cache_lock)
{
auto query_context = getCurrentQueryContext();
auto query_context = getCurrentQueryContext(cache_lock);
if (query_context != nullptr)
{
@ -607,9 +616,10 @@ LRUFileCache::ReserveResult LRUFileCache::tryReserveForQuery(const Key & key, si
auto file_segment = cell->file_segment;
if (file_segment)
{
query_context->remove(file_segment->key(), file_segment->offset(), cache_lock);
std::lock_guard segment_lock(file_segment->mutex);
remove(file_segment->key(), file_segment->offset(), cache_lock, segment_lock);
query_context->remove(file_segment->key(), file_segment->offset(), cache_lock);
}
}
@ -632,9 +642,10 @@ LRUFileCache::ReserveResult LRUFileCache::tryReserveForQuery(const Key & key, si
auto file_segment = cell->file_segment;
if (file_segment)
{
query_context->remove(file_segment->key(), file_segment->offset(), cache_lock);
std::lock_guard<std::mutex> segment_lock(file_segment->mutex);
remove(file_segment->key(), file_segment->offset(), cache_lock, segment_lock);
query_context->remove(file_segment->key(), file_segment->offset(), cache_lock);
}
}
@ -724,6 +735,15 @@ bool LRUFileCache::tryReserveForMainList(
auto file_segment = cell->file_segment;
if (file_segment)
{
/// Update query_context if needed.
{
auto query_id = file_segment->getQueryId();
if (!query_id.empty())
{
if (auto context = getQueryContext(query_id, cache_lock))
context->remove(file_segment->key(), file_segment->offset(), cache_lock);
}
}
std::lock_guard segment_lock(file_segment->mutex);
remove(file_segment->key(), file_segment->offset(), cache_lock, segment_lock);
}
@ -750,6 +770,16 @@ bool LRUFileCache::tryReserveForMainList(
auto file_segment = cell->file_segment;
if (file_segment)
{
/// Update query context if needed.
{
auto query_id = file_segment->getQueryId();
if (!query_id.empty())
{
if (auto context = getQueryContext(query_id, cache_lock))
context->remove(file_segment->key(), file_segment->offset(), cache_lock);
}
}
std::lock_guard<std::mutex> segment_lock(file_segment->mutex);
remove(file_segment->key(), file_segment->offset(), cache_lock, segment_lock);
}
@ -760,6 +790,7 @@ bool LRUFileCache::tryReserveForMainList(
if (query_context)
query_context->reserve(key, offset, size, cache_lock);
return true;
}

17
src/Common/FileCache.h
View File

@ -270,14 +270,19 @@ private:
void remove(const Key & key, size_t offset, std::lock_guard<std::mutex> & cache_lock)
{
auto record = records.find({key, offset});
if (record != records.end())
{
cache_size -= record->second->size;
lru_queue.remove(record->second, cache_lock);
records.erase({key, offset});
}
}
void reserve(const Key & key, size_t offset, size_t size, std::lock_guard<std::mutex> & cache_lock)
{
auto record = records.find({key, offset});
if (record == records.end())
{
auto queue_iter = lru_queue.add(key, offset, 0, cache_lock);
@ -287,6 +292,14 @@ private:
cache_size += size;
}
void use(const Key & key, size_t offset, std::lock_guard<std::mutex> & cache_lock)
{
auto record = records.find({key, offset});
if (record != records.end())
lru_queue.moveToEnd(record->second, cache_lock);
}
size_t getRefCount() const { return ref_count; }
void incrementRefCount() { ref_count++; }
@ -327,7 +340,9 @@ private:
void useCell(const FileSegmentCell & cell, FileSegments & result, std::lock_guard<std::mutex> & cache_lock);
QueryContextPtr getCurrentQueryContext() const;
QueryContextPtr getCurrentQueryContext(std::lock_guard<std::mutex> & cache_lock) const;
QueryContextPtr getQueryContext(const String & query_id, std::lock_guard<std::mutex> & cache_lock) const;
bool tryReserve(
const Key & key, size_t offset, size_t size,

12
src/Common/FileSegment.cpp
View File

@ -162,6 +162,18 @@ String FileSegment::getDownloader() const
return downloader_id;
}
String FileSegment::getQueryId() const
{
std::lock_guard segment_lock(mutex);
auto npos = downloader_id.find(":");
if (npos == std::string::npos)
return {};
else
return downloader_id.substr(0, npos);
}
bool FileSegment::isDownloader() const
{
std::lock_guard segment_lock(mutex);

2
src/Common/FileSegment.h
View File

@ -125,6 +125,8 @@ public:
String getDownloader() const;
String getQueryId() const;
void resetDownloader();
bool isDownloader() const;