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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "attributefilebufferwriter.h"
#include <vespa/vespalib/data/databuffer.h>
namespace search {
AttributeFileBufferWriter::
AttributeFileBufferWriter(IAttributeFileWriter &fileWriter)
: BufferWriter(),
_buf(),
_bytesWritten(0),
_incompleteBuffers(0),
_fileWriter(fileWriter)
{
_buf = _fileWriter.allocBuf(BUFFER_SIZE);
assert(_buf->getFreeLen() >= BUFFER_SIZE);
setup(_buf->getFree(), BUFFER_SIZE);
}
AttributeFileBufferWriter::~AttributeFileBufferWriter()
{
assert(usedLen() == 0);
}
void
AttributeFileBufferWriter::flush()
{
assert(_incompleteBuffers == 0); // all previous buffers must have been full
size_t nowLen = usedLen();
if (nowLen != BUFFER_SIZE) {
// buffer is not full, only allowed for last buffer
++_incompleteBuffers;
}
if (nowLen == 0) {
return; // empty buffer
}
assert(_buf->getDataLen() == 0);
onFlush(nowLen);
assert(_buf->getFreeLen() >= BUFFER_SIZE);
setup(_buf->getFree(), BUFFER_SIZE);
_bytesWritten += nowLen;
}
} // namespace search
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