1 files changed, 78 insertions, 0 deletions
diff --git a/vbench/src/vbench/core/simple_buffer.cpp b/vbench/src/vbench/core/simple_buffer.cpp
new file mode 100644
index 00000000000..1e1d0a8e4ae
--- /dev/null
+++ b/vbench/src/vbench/core/simple_buffer.cpp
@@ -0,0 +1,78 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#include <vespa/fastos/fastos.h>
+#include "simple_buffer.h"
+
+namespace vbench {
+
+SimpleBuffer::SimpleBuffer()
+    : _data(),
+      _used(0)
+{
+}
+
+Memory
+SimpleBuffer::obtain(size_t bytes, size_t)
+{
+    return Memory(&_data[0], std::min(bytes, _used));
+}
+
+Input &
+SimpleBuffer::evict(size_t bytes)
+{
+    assert(bytes <= _used);
+    _data.erase(_data.begin(), _data.begin() + bytes);
+    _used -= bytes;
+    return *this;
+}
+
+WritableMemory
+SimpleBuffer::reserve(size_t bytes)
+{
+    _data.resize(_used + bytes, char(0x55));
+    return WritableMemory(&_data[_used], bytes);
+}
+
+Output &
+SimpleBuffer::commit(size_t bytes, size_t)
+{
+    assert(bytes <= (_data.size() - _used));
+    _used += bytes;
+    return *this;
+}
+
+bool
+SimpleBuffer::operator==(const SimpleBuffer &rhs) const
+{
+    Memory a = get();
+    Memory b = rhs.get();
+    if (a.size != b.size) {
+        return false;
+    }
+    for (size_t i = 0; i < a.size; ++i) {
+        if (a.data[i] != b.data[i]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+std::ostream &operator<<(std::ostream &os, const SimpleBuffer &buf) {
+    Memory memory = buf.get();
+    uint32_t written = 0;
+    uint32_t hexCount = 25;
+    os << "size: " << memory.size << "(bytes)" << std::endl;
+    for (size_t i = 0; i < memory.size; ++i, ++written) {
+        if (written > hexCount) {
+            os << std::endl;
+            written = 0;
+        }
+        os << strfmt("0x%02x ", memory.data[i] & 0xff);
+    }
+    if (written > 0) {
+        os << std::endl;
+    }
+    return os;
+}
+
+} // namespace vbench