thin-provisioning-tools/base/io_generator.h

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2020-06-12 16:03:49 +05:30
#ifndef BASE_IO_GENERATOR_H
#define BASE_IO_GENERATOR_H
#include "base/io.h"
#include <memory>
//----------------------------------------------------------------
namespace base {
struct io_pattern {
enum pattern {
READ = 1 << 1,
WRITE = 1 << 2,
TRIM = 1 << 3,
RANDOM = 1 << 8,
READ_WRITE = READ | WRITE,
TRIM_WRITE = WRITE | TRIM,
RAND_READ = READ | RANDOM,
RAND_WRITE = WRITE | RANDOM,
RAND_TRIM = TRIM | RANDOM,
RAND_RW = READ_WRITE | RANDOM,
RAND_TW = TRIM_WRITE | RANDOM,
};
io_pattern();
io_pattern(char const *pattern);
void parse(char const *pattern);
bool is_random() const;
pattern val_;
};
struct io_generator_options {
io_pattern pattern_;
sector_t offset_;
sector_t block_size_;
sector_t size_;
sector_t io_size_;
};
class io_generator {
public:
typedef std::shared_ptr<io_generator> ptr;
virtual bool next(base::io &next_io) = 0;
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};
io_generator::ptr
create_io_generator(io_generator_options const &opts);
}
//----------------------------------------------------------------
#endif