Initial commit

1 files changed, 30 insertions, 0 deletions

diff --git a/src/buffer.hh b/src/buffer.hh
new file mode 100644
index 0000000..92a7566
--- /dev/null
+++ b/src/buffer.hh
@@ -0,0 +1,30 @@
+// -*- mode: c++; c-basic-offset: 2; -*-
+
+#ifndef BUFFER_HH
+#define BUFFER_HH
+
+#include <cstddef>
+
+class Buffer {
+public:
+  virtual ~Buffer() {}
+
+  static Buffer* create(size_t capacity, size_t min_avail);
+
+  bool empty() const;
+
+  virtual void const* read_ptr(size_t* avail) const = 0;
+  virtual void consume(size_t bytes) = 0;
+
+  virtual void* write_ptr(size_t* avail) = 0;
+  virtual void commit(size_t bytes) = 0;
+
+  size_t read(void* data, size_t max);
+  void write(void const* data, size_t size);
+
+protected:
+  Buffer() {}
+  Buffer(Buffer const&) = delete;
+};
+
+#endif  // BUFFER_HH