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MySQL 8.0.40
Source Code Documentation
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MySQL 8.0.40
Source Code Documentation
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The index tree general types. More...
#include "univ.i"#include "page0size.h"#include "page0types.h"#include "rem0types.h"#include "sync0rw.h"#include "ut0rnd.h"Go to the source code of this file.
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| std::atomic_bool | btr_search_enabled |
| Is search system enabled. More... | |
| ulong | btr_ahi_parts |
| Number of adaptive hash index partition. More... | |
| ut::fast_modulo_t | btr_ahi_parts_fast_modulo |
| Structure to facilitate fast modulo for number of adaptive hash index partition. More... | |
| constexpr uint32_t | BTR_EXTERN_FIELD_REF_SIZE = FIELD_REF_SIZE |
| The size of a reference to data stored on a different page. More... | |
| constexpr uint32_t | BTR_EXTERN_LOCAL_STORED_MAX_SIZE |
| If the data don't exceed the size, the data are stored locally. More... | |
The index tree general types.
Created 2/17/1996 Heikki Tuuri
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Number of adaptive hash index partition.
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Structure to facilitate fast modulo for number of adaptive hash index partition.
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The size of a reference to data stored on a different page.
The reference is stored at the end of the prefix of the field in the index record.
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If the data don't exceed the size, the data are stored locally.
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Is search system enabled.
Search system is protected by array of latches.
Is search system enabled.
While it is false, the AHI data structures can't have new entries added, they can only be removed. It is changed to false while having all AHI latches X-latched, so any section that adds entries to AHI data structures must have at least one S-latch. All changes to this flag are protected by the btr_search_enable_mutex.
1.9.2