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KeeperDispatcher: remove reductant lock as the ConcurrentBoundedQueue is thread-safe

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This commit is contained in:
Jiang Yuqing 2023-07-03 15:23:13 +08:00 committed by frinkr
parent bcb106e138
commit f443a00d14
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GPG Key ID: 2BA3AA625DEC5019
2 changed files with 9 additions and 24 deletions
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31
src/Coordination/KeeperDispatcher.cpp
View File

@ -304,8 +304,6 @@ bool KeeperDispatcher::putRequest(const Coordination::ZooKeeperRequestPtr & requ
request_info.time = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
request_info.session_id = session_id;
std::lock_guard lock(push_request_mutex);
if (shutdown_called)
return false;
@ -393,13 +391,11 @@ void KeeperDispatcher::shutdown()
try
{
{
std::lock_guard lock(push_request_mutex);
if (shutdown_called)
bool expected = false;
if (!shutdown_called.compare_exchange_strong(expected, true))
return;
LOG_DEBUG(log, "Shutting down storage dispatcher");
shutdown_called = true;
if (session_cleaner_thread.joinable())
session_cleaner_thread.join();
@ -545,12 +541,9 @@ void KeeperDispatcher::sessionCleanerTask()
.time = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count(),
.request = std::move(request),
};
{
std::lock_guard lock(push_request_mutex);
if (!requests_queue->push(std::move(request_info)))
LOG_INFO(log, "Cannot push close request to queue while cleaning outdated sessions");
CurrentMetrics::add(CurrentMetrics::KeeperOutstandingRequets);
}
if (!requests_queue->push(std::move(request_info)))
LOG_INFO(log, "Cannot push close request to queue while cleaning outdated sessions");
CurrentMetrics::add(CurrentMetrics::KeeperOutstandingRequets);
/// Remove session from registered sessions
finishSession(dead_session);
@ -661,12 +654,9 @@ int64_t KeeperDispatcher::getSessionID(int64_t session_timeout_ms)
}
/// Push new session request to queue
{
std::lock_guard lock(push_request_mutex);
if (!requests_queue->tryPush(std::move(request_info), session_timeout_ms))
throw Exception(ErrorCodes::TIMEOUT_EXCEEDED, "Cannot push session id request to queue within session timeout");
CurrentMetrics::add(CurrentMetrics::KeeperOutstandingRequets);
}
if (!requests_queue->tryPush(std::move(request_info), session_timeout_ms))
throw Exception(ErrorCodes::TIMEOUT_EXCEEDED, "Cannot push session id request to queue within session timeout");
CurrentMetrics::add(CurrentMetrics::KeeperOutstandingRequets);
if (future.wait_for(std::chrono::milliseconds(session_timeout_ms)) != std::future_status::ready)
throw Exception(ErrorCodes::TIMEOUT_EXCEEDED, "Cannot receive session id within session timeout");
@ -800,10 +790,7 @@ uint64_t KeeperDispatcher::getSnapDirSize() const
Keeper4LWInfo KeeperDispatcher::getKeeper4LWInfo() const
{
Keeper4LWInfo result = server->getPartiallyFilled4LWInfo();
{
std::lock_guard lock(push_request_mutex);
result.outstanding_requests_count = requests_queue->size();
}
result.outstanding_requests_count = requests_queue->size();
{
std::lock_guard lock(session_to_response_callback_mutex);
result.alive_connections_count = session_to_response_callback.size();

2
src/Coordination/KeeperDispatcher.h
View File

@ -27,8 +27,6 @@ using ZooKeeperResponseCallback = std::function<void(const Coordination::ZooKeep
class KeeperDispatcher
{
private:
mutable std::mutex push_request_mutex;
using RequestsQueue = ConcurrentBoundedQueue<KeeperStorage::RequestForSession>;
using SessionToResponseCallback = std::unordered_map<int64_t, ZooKeeperResponseCallback>;
using UpdateConfigurationQueue = ConcurrentBoundedQueue<ConfigUpdateAction>;