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MySQL 8.0.39
Source Code Documentation
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MySQL 8.0.39
Source Code Documentation
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A RAII helper which latches the mutex protecting given shard during constructor, and unlatches it during destruction. More...
#include <lock0guards.h>
Public Member Functions | |
| Shard_naked_latch_guard (ut::Location location, const table_id_t &table_id) | |
| Shard_naked_latch_guard (ut::Location location, const page_id_t &page_id) | |
| ~Shard_naked_latch_guard () | |
Private Member Functions | |
| Shard_naked_latch_guard (ut::Location location, Lock_mutex &shard_mutex) | |
 Private Member Functions inherited from ut::Non_copyable | |
| Non_copyable (const Non_copyable &)=delete | |
| Non_copyable & | operator= (const Non_copyable &)=delete |
| Non_copyable ()=default | |
| ~Non_copyable ()=default | |
Private Attributes | |
| Lock_mutex & | m_shard_mutex |
| The mutex protecting the shard requested in constructor. More... | |
A RAII helper which latches the mutex protecting given shard during constructor, and unlatches it during destruction.
You quite probably don't want to use this class, which only takes a shard's latch, without acquiring global_latch - which gives no protection from threads which latch only the global_latch exclusively to prevent any activity. You should use it in combination with Global_shared_latch_guard, so that you first obtain an s-latch on the global_latch, or simply use the Shard_latch_guard class which already combines the two for you.
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explicitprivate |
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explicit |
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explicit |
| locksys::Shard_naked_latch_guard::~Shard_naked_latch_guard | ( | ) |
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private |
The mutex protecting the shard requested in constructor.
1.9.2