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MySQL
8.0.20
Source Code Documentation
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MySQL
8.0.20
Source Code Documentation
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Global types for sync. More...
#include <iostream>#include <vector>#include "sync0sync.h"#include "univ.i"#include "ut0counter.h"#include "ut0new.h"Go to the source code of this file.
Classes | |
| struct | OSMutex |
| OS mutex, without any policy. More... | |
| class | LatchCounter |
| Default latch counter. More... | |
| struct | LatchCounter::Count |
| The counts we collect for a mutex. More... | |
| class | LatchMeta< Counter > |
| Latch meta data. More... | |
| struct | latch_t |
| All (ordered) latches, used in debugging, must derive from this class. More... | |
| struct | sync_check_functor_t |
| Subclass this to iterate over a thread's acquired latch levels. More... | |
| struct | btrsea_sync_check |
| Functor to check whether the calling thread owns the btr search mutex. More... | |
| struct | dict_sync_check |
| Functor to check for dictionary latching constraints. More... | |
| struct | sync_allowed_latches |
| Functor to check for given latching constraints. More... | |
Macros | |
| #define | LATCH_ADD_MUTEX(id, level, key) |
| Latch element Used for mutexes which have PFS keys defined under UNIV_PFS_MUTEX. More... | |
| #define | LATCH_ADD_RWLOCK(id, level, key) |
| Latch element. More... | |
Typedefs | |
| typedef pthread_mutex_t | sys_mutex_t |
| Native mutex. More... | |
| typedef LatchMeta< LatchCounter > | latch_meta_t |
| typedef std::vector< latch_meta_t *, ut_allocator< latch_meta_t * > > | LatchMetaData |
| typedef ulint | rw_lock_flags_t |
Functions | |
| latch_meta_t & | sync_latch_get_meta (latch_id_t id) |
| Get the latch meta-data from the latch ID. More... | |
| latch_meta_t::CounterType * | sync_latch_get_counter (latch_id_t id) |
| Fetch the counter for the latch. More... | |
| const char * | sync_latch_get_name (latch_id_t id) |
| Get the latch name from the latch ID. More... | |
| latch_level_t | sync_latch_get_level (latch_id_t id) |
| Get the latch ordering level. More... | |
| mysql_pfs_key_t | sync_latch_get_pfs_key (latch_id_t id) |
| Get the latch PFS key from the latch ID. More... | |
| std::string | sync_mutex_to_string (latch_id_t id, const std::string &created) |
| String representation of the filename and line number where the latch was created. More... | |
| const char * | sync_latch_get_name (latch_level_t level) |
| Get the latch name from a sync level. More... | |
| const char * | sync_basename (const char *filename) |
| Print the filename "basename". More... | |
| void | sync_file_created_register (const void *ptr, const char *filename, uint16_t line) |
| Register a latch, called when it is created. More... | |
| void | sync_file_created_deregister (const void *ptr) |
| Deregister a latch, called when it is destroyed. More... | |
| std::string | sync_file_created_get (const void *ptr) |
| Get the string where the file was created. More... | |
| latch_id_t | sync_latch_get_id (const char *name) |
| Get the latch id from a latch name. More... | |
Variables | |
| bool | innodb_calling_exit |
| Set when InnoDB has invoked exit(). More... | |
| LatchMetaData | latch_meta |
| Note: This is accessed without any mutex protection. More... | |
Global types for sync.
Created 9/5/1995 Heikki Tuuri
Latch element Used for mutexes which have PFS keys defined under UNIV_PFS_MUTEX.
| [in] | id | Latch id |
| [in] | level | Latch level |
| [in] | key | PFS key |
Latch element.
Used for rwlocks which have PFS keys defined under UNIV_PFS_RWLOCK.
| [in] | id | Latch id |
| [in] | level | Latch level |
| [in] | key | PFS key |
| typedef LatchMeta<LatchCounter> latch_meta_t |
| typedef std::vector<latch_meta_t *, ut_allocator<latch_meta_t *> > LatchMetaData |
| typedef ulint rw_lock_flags_t |
| typedef pthread_mutex_t sys_mutex_t |
Native mutex.
| enum latch_id_t |
Each latch has an ID.
This id is used for creating the latch and to look up its meta-data. See sync0debug.c. The order does not matter here, but alphabetical ordering seems useful
| enum latch_level_t |
Latching order levels.
If you modify these, you have to also update LatchDebug internals in sync0debug.cc
| enum mutex_state_t |
The new (C++11) syntax allows the following and we should use it when it is available on platforms that we support.
enum class mutex_state_t : lock_word_t { ... };Mutex states.
| Enumerator | |
|---|---|
| MUTEX_STATE_UNLOCKED | Mutex is free. |
| MUTEX_STATE_LOCKED | Mutex is acquired by some thread. |
| MUTEX_STATE_WAITERS | Mutex is contended and there are threads waiting on the lock. |
| enum rw_lock_flag_t |
| const char* sync_basename | ( | const char * | filename | ) |
Print the filename "basename".
Print the filename "basename".
| [in] | filename | Name from where to extract the basename |
| void sync_file_created_deregister | ( | const void * | ptr | ) |
Deregister a latch, called when it is destroyed.
| [in] | ptr | Latch to be destroyed |
| std::string sync_file_created_get | ( | const void * | ptr | ) |
Get the string where the file was created.
Its format is "name:line"
| [in] | ptr | Latch instance |
| void sync_file_created_register | ( | const void * | ptr, |
| const char * | filename, | ||
| uint16_t | line | ||
| ) |
Register a latch, called when it is created.
| [in] | ptr | Latch instance that was created |
| [in] | filename | Filename where it was created |
| [in] | line | Line number in filename |
|
inline |
Fetch the counter for the latch.
| [in] | id | Latch ID |
| latch_id_t sync_latch_get_id | ( | const char * | name | ) |
Get the latch id from a latch name.
| [in] | name | Latch name |
| [in] | name | Latch name |
|
inline |
Get the latch ordering level.
| [in] | id | Latch id to lookup |
|
inline |
Get the latch meta-data from the latch ID.
| [in] | id | Latch ID |
|
inline |
Get the latch name from the latch ID.
| [in] | id | Latch ID |
| const char* sync_latch_get_name | ( | latch_level_t | level | ) |
Get the latch name from a sync level.
| [in] | level | Latch level to lookup |
| [in] | level | Latch level to lookup |
|
inline |
Get the latch PFS key from the latch ID.
| [in] | id | Latch ID |
| std::string sync_mutex_to_string | ( | latch_id_t | id, |
| const std::string & | created | ||
| ) |
String representation of the filename and line number where the latch was created.
| [in] | id | Latch ID |
| [in] | created | Filename and line number where it was crated |
| bool innodb_calling_exit |
Set when InnoDB has invoked exit().
| LatchMetaData latch_meta |
Note: This is accessed without any mutex protection.
It is initialised at startup and elements should not be added to or removed from it after that. See sync_latch_meta_init()
1.8.13