update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / jaegertracing / thrift / lib / cpp / src / thrift / concurrency / Mutex.h

diff --git a/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/concurrency/Mutex.h b/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/concurrency/Mutex.h
new file mode 100644 (file)
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+++ b/ceph/src/jaegertracing/thrift/lib/cpp/src/thrift/concurrency/Mutex.h
@@ -0,0 +1,89 @@
+/*
+ * 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_CONCURRENCY_MUTEX_H_
+#define _THRIFT_CONCURRENCY_MUTEX_H_ 1
+
+#include <memory>
+#include <boost/noncopyable.hpp>
+
+namespace apache {
+namespace thrift {
+namespace concurrency {
+
+/**
+ * NOTE: All mutex implementations throw an exception on failure.  See each
+ *       specific implementation to understand the exception type(s) used.
+ */
+
+/**
+ * A simple mutex class
+ *
+ * @version $Id:$
+ */
+class Mutex {
+public:
+  Mutex();
+  virtual ~Mutex() = default;
+
+  virtual void lock() const;
+  virtual bool trylock() const;
+  virtual bool timedlock(int64_t milliseconds) const;
+  virtual void unlock() const;
+
+  void* getUnderlyingImpl() const;
+
+private:
+  class impl;
+  std::shared_ptr<impl> impl_;
+};
+
+
+class Guard : boost::noncopyable {
+public:
+  Guard(const Mutex& value, int64_t timeout = 0) : mutex_(&value) {
+    if (timeout == 0) {
+      value.lock();
+    } else if (timeout < 0) {
+      if (!value.trylock()) {
+        mutex_ = nullptr;
+      }
+    } else {
+      if (!value.timedlock(timeout)) {
+        mutex_ = nullptr;
+      }
+    }
+  }
+  ~Guard() {
+    if (mutex_) {
+      mutex_->unlock();
+    }
+  }
+
+  operator bool() const { return (mutex_ != nullptr); }
+
+private:
+  const Mutex* mutex_;
+};
+
+}
+}
+} // apache::thrift::concurrency
+
+#endif // #ifndef _THRIFT_CONCURRENCY_MUTEX_H_