Prepare cscore for merge into allwpilib.

cscore/src/main/native/cpp/SinkImpl.h

@@ -0,0 +1,63 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2016-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CSCORE_SINKIMPL_H_
+#define CSCORE_SINKIMPL_H_
+
+#include <memory>
+#include <string>
+
+#include <llvm/StringRef.h>
+#include <support/mutex.h>
+
+#include "SourceImpl.h"
+
+namespace cs {
+
+class Frame;
+
+class SinkImpl {
+ public:
+  explicit SinkImpl(llvm::StringRef name);
+  virtual ~SinkImpl();
+  SinkImpl(const SinkImpl& queue) = delete;
+  SinkImpl& operator=(const SinkImpl& queue) = delete;
+
+  llvm::StringRef GetName() const { return m_name; }
+
+  void SetDescription(llvm::StringRef description);
+  llvm::StringRef GetDescription(llvm::SmallVectorImpl<char>& buf) const;
+
+  void Enable();
+  void Disable();
+  void SetEnabled(bool enabled);
+
+  void SetSource(std::shared_ptr<SourceImpl> source);
+
+  std::shared_ptr<SourceImpl> GetSource() const {
+    std::lock_guard<wpi::mutex> lock(m_mutex);
+    return m_source;
+  }
+
+  std::string GetError() const;
+  llvm::StringRef GetError(llvm::SmallVectorImpl<char>& buf) const;
+
+ protected:
+  virtual void SetSourceImpl(std::shared_ptr<SourceImpl> source);
+
+  mutable wpi::mutex m_mutex;
+
+ private:
+  std::string m_name;
+  std::string m_description;
+  std::shared_ptr<SourceImpl> m_source;
+  int m_enabledCount{0};
+};
+
+}  // namespace cs
+
+#endif  // CSCORE_SINKIMPL_H_