2015-03-30 22:10:59 +00:00
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#include <DB/IO/createReadBufferFromFileBase.h>
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#include <DB/IO/ReadBufferFromFile.h>
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#include <DB/IO/ReadBufferAIO.h>
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2015-04-16 12:06:05 +00:00
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#include <DB/Common/ProfileEvents.h>
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2015-03-30 22:10:59 +00:00
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namespace DB
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{
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2015-04-13 15:02:39 +00:00
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ReadBufferFromFileBase * createReadBufferFromFileBase(const std::string & filename_, size_t estimated_size,
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size_t aio_threshold, size_t buffer_size_, int flags_, char * existing_memory_, size_t alignment)
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2015-03-30 22:10:59 +00:00
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{
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2015-04-13 15:02:39 +00:00
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if ((aio_threshold == 0) || (estimated_size < aio_threshold))
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2015-04-16 12:06:05 +00:00
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{
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ProfileEvents::increment(ProfileEvents::CreatedReadBufferOrdinary);
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2015-03-30 22:10:59 +00:00
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return new ReadBufferFromFile(filename_, buffer_size_, flags_, existing_memory_, alignment);
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2015-04-16 12:06:05 +00:00
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}
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2015-03-30 22:10:59 +00:00
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else
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2015-04-16 12:06:05 +00:00
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{
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ProfileEvents::increment(ProfileEvents::CreatedReadBufferAIO);
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2015-03-30 22:10:59 +00:00
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return new ReadBufferAIO(filename_, buffer_size_, flags_, existing_memory_);
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2015-04-16 12:06:05 +00:00
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}
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2015-03-30 22:10:59 +00:00
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}
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}
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