MySQL 8.2.0
Source Code Documentation
secondary_engine_costing_flags.h
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22
23#ifndef SQL_JOIN_OPTIMIZER_SECONDARY_ENGINE_COSTING_FLAGS_H_
24#define SQL_JOIN_OPTIMIZER_SECONDARY_ENGINE_COSTING_FLAGS_H_
25
26#include <cstdint>
27
28/**
29 @file
30
31 For updating an AccessPath's costs by a secondary engine, i.e. costing
32 a partial plan, the secondary engine may need to know ahead of time
33 certain information about the current planning, for which we provide
34 some flags here.
35
36 */
37
39
45};
46
47/// Creates an empty bitmap of costing flags. This is the base
48/// case for the function template with the same name below.
50 return 0;
51}
52
53/// Creates a bitmap representing a set of costing flags.
54template <typename... Args>
56 const SecondaryEngineCostingFlag &flag1, const Args &... rest) {
57 return (uint64_t{1} << static_cast<SecondaryEngineCostingFlags>(flag1)) |
59}
60
64}
65
69}
70
74}
75
79}
80
84}
85
89}
90
93 return ~MakeSecondaryEngineCostingFlags(flag);
94}
95
96#endif /* SQL_JOIN_OPTIMIZER_SECONDARY_ENGINE_COSTING_FLAGS_H_ */
static int flag
Definition: hp_test1.cc:39
constexpr SecondaryEngineCostingFlags operator|(const SecondaryEngineCostingFlags &a, const SecondaryEngineCostingFlag &b)
Definition: secondary_engine_costing_flags.h:61
constexpr SecondaryEngineCostingFlags operator~(const SecondaryEngineCostingFlag &flag)
Definition: secondary_engine_costing_flags.h:91
uint64_t SecondaryEngineCostingFlags
Definition: secondary_engine_costing_flags.h:38
constexpr SecondaryEngineCostingFlags & operator&=(SecondaryEngineCostingFlags &a, const SecondaryEngineCostingFlag &b)
Definition: secondary_engine_costing_flags.h:86
SecondaryEngineCostingFlag
Definition: secondary_engine_costing_flags.h:40
constexpr SecondaryEngineCostingFlags MakeSecondaryEngineCostingFlags()
Creates an empty bitmap of costing flags.
Definition: secondary_engine_costing_flags.h:49
constexpr SecondaryEngineCostingFlags & operator|=(SecondaryEngineCostingFlags &a, const SecondaryEngineCostingFlag &b)
Definition: secondary_engine_costing_flags.h:71
constexpr SecondaryEngineCostingFlags operator&(const SecondaryEngineCostingFlags &a, const SecondaryEngineCostingFlag &b)
Definition: secondary_engine_costing_flags.h:76