update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / thrift / lib / cpp / src / thrift / async / TConcurrentClientSyncInfo.h

diff --git a/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/async/TConcurrentClientSyncInfo.h b/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/async/TConcurrentClientSyncInfo.h
new file mode 100644 (file)
index 0000000..0bc5eb5
--- /dev/null
+++ b/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/async/TConcurrentClientSyncInfo.h
@@ -0,0 +1,126 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ */
+#ifndef _THRIFT_TCONCURRENTCLIENTSYNCINFO_H_
+#define _THRIFT_TCONCURRENTCLIENTSYNCINFO_H_ 1
+
+#include <thrift/protocol/TProtocol.h>
+#include <thrift/concurrency/Mutex.h>
+#include <thrift/concurrency/Monitor.h>
+#include <memory>
+#include <vector>
+#include <string>
+#include <map>
+
+namespace apache {
+namespace thrift {
+namespace async {
+
+class TConcurrentClientSyncInfo;
+
+class TConcurrentSendSentry {
+public:
+  explicit TConcurrentSendSentry(TConcurrentClientSyncInfo* sync);
+  ~TConcurrentSendSentry();
+
+  void commit();
+
+private:
+  TConcurrentClientSyncInfo& sync_;
+  bool committed_;
+};
+
+class TConcurrentRecvSentry {
+public:
+  TConcurrentRecvSentry(TConcurrentClientSyncInfo* sync, int32_t seqid);
+  ~TConcurrentRecvSentry();
+
+  void commit();
+
+private:
+  TConcurrentClientSyncInfo& sync_;
+  int32_t seqid_;
+  bool committed_;
+};
+
+class TConcurrentClientSyncInfo {
+private: // typedefs
+  typedef std::shared_ptr< ::apache::thrift::concurrency::Monitor> MonitorPtr;
+  typedef std::map<int32_t, MonitorPtr> MonitorMap;
+
+public:
+  TConcurrentClientSyncInfo();
+
+  int32_t generateSeqId();
+
+  bool getPending(std::string& fname,
+                  ::apache::thrift::protocol::TMessageType& mtype,
+                  int32_t& rseqid); /* requires readMutex_ */
+
+  void updatePending(const std::string& fname,
+                     ::apache::thrift::protocol::TMessageType mtype,
+                     int32_t rseqid); /* requires readMutex_ */
+
+  void waitForWork(int32_t seqid); /* requires readMutex_ */
+
+  ::apache::thrift::concurrency::Mutex& getReadMutex() { return readMutex_; }
+  ::apache::thrift::concurrency::Mutex& getWriteMutex() { return writeMutex_; }
+
+private: // constants
+  enum { MONITOR_CACHE_SIZE = 10 };
+
+private: // functions
+  MonitorPtr newMonitor_(
+      const ::apache::thrift::concurrency::Guard& seqidGuard); /* requires seqidMutex_ */
+  void deleteMonitor_(const ::apache::thrift::concurrency::Guard& seqidGuard, MonitorPtr& m);
+      /*noexcept*/ /* requires seqidMutex_ */
+  void wakeupAnyone_(
+      const ::apache::thrift::concurrency::Guard& seqidGuard);           /* requires seqidMutex_ */
+  void markBad_(const ::apache::thrift::concurrency::Guard& seqidGuard); /* requires seqidMutex_ */
+  void throwBadSeqId_();
+  void throwDeadConnection_();
+
+private: // data members
+  volatile bool stop_;
+
+  ::apache::thrift::concurrency::Mutex seqidMutex_;
+  // begin seqidMutex_ protected members
+  int32_t nextseqid_;
+  MonitorMap seqidToMonitorMap_;
+  std::vector<MonitorPtr> freeMonitors_;
+  // end seqidMutex_ protected members
+
+  ::apache::thrift::concurrency::Mutex writeMutex_;
+
+  ::apache::thrift::concurrency::Mutex readMutex_;
+  // begin readMutex_ protected members
+  bool recvPending_;
+  bool wakeupSomeone_;
+  int32_t seqidPending_;
+  std::string fnamePending_;
+  ::apache::thrift::protocol::TMessageType mtypePending_;
+  // end readMutex_ protected members
+
+  friend class TConcurrentSendSentry;
+  friend class TConcurrentRecvSentry;
+};
+}
+}
+} // apache::thrift::async
+
+#endif // _THRIFT_TCONCURRENTCLIENTSYNCINFO_H_