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MySQL 5.1: mysql/src/5.1-dbg/include/thr_lock.h File Reference

mysql/src/5.1-dbg/include/thr_lock.h File Reference

#include <my_pthread.h>
#include <my_list.h>

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Classes

struct  st_thr_lock_info
struct  st_thr_lock_owner
struct  st_thr_lock_data
struct  st_lock_list
struct  st_thr_lock

Defines

#define thr_lock_owner_init(owner, info_arg)   (owner)->info= (info_arg)

Typedefs

typedef st_thr_lock_info THR_LOCK_INFO
typedef st_thr_lock_owner THR_LOCK_OWNER
typedef st_thr_lock_data THR_LOCK_DATA
typedef st_thr_lock THR_LOCK

Enumerations

enum  thr_lock_type {
  TL_IGNORE = -1, TL_UNLOCK, TL_READ, TL_READ_WITH_SHARED_LOCKS,
  TL_READ_HIGH_PRIORITY, TL_READ_NO_INSERT, TL_WRITE_ALLOW_WRITE, TL_WRITE_ALLOW_READ,
  TL_WRITE_CONCURRENT_INSERT, TL_WRITE_DELAYED, TL_WRITE_LOW_PRIORITY, TL_WRITE,
  TL_WRITE_ONLY
}
enum  enum_thr_lock_result { THR_LOCK_SUCCESS = 0, THR_LOCK_ABORTED = 1, THR_LOCK_WAIT_TIMEOUT = 2, THR_LOCK_DEADLOCK = 3 }

Functions

my_bool init_thr_lock (void)
void thr_lock_info_init (THR_LOCK_INFO *info)
void thr_lock_init (THR_LOCK *lock)
void thr_lock_delete (THR_LOCK *lock)
void thr_lock_data_init (THR_LOCK *lock, THR_LOCK_DATA *data, void *status_param)
enum enum_thr_lock_result thr_lock (THR_LOCK_DATA *data, THR_LOCK_OWNER *owner, enum thr_lock_type lock_type)
void thr_unlock (THR_LOCK_DATA *data)
enum enum_thr_lock_result thr_multi_lock (THR_LOCK_DATA **data, uint count, THR_LOCK_OWNER *owner)
void thr_multi_unlock (THR_LOCK_DATA **data, uint count)
void thr_abort_locks (THR_LOCK *lock, bool upgrade_lock)
my_bool thr_abort_locks_for_thread (THR_LOCK *lock, pthread_t thread)
void thr_print_locks (void)
my_bool thr_upgrade_write_delay_lock (THR_LOCK_DATA *data)
void thr_downgrade_write_lock (THR_LOCK_DATA *data, enum thr_lock_type new_lock_type)
my_bool thr_reschedule_write_lock (THR_LOCK_DATA *data)

Variables

ulong locks_immediate
ulong locks_waited
ulong max_write_lock_count
ulong table_lock_wait_timeout
my_bool thr_lock_inited
enum thr_lock_type thr_upgraded_concurrent_insert_lock
LIST * thr_lock_thread_list
pthread_mutex_t THR_LOCK_lock

Define Documentation

#define thr_lock_owner_init ( owner,
info_arg   )     (owner)->info= (info_arg)

Definition at line 133 of file thr_lock.h.

Referenced by Sensitive_cursor::Sensitive_cursor().

Typedef Documentation

typedef struct st_thr_lock THR_LOCK

typedef struct st_thr_lock_data THR_LOCK_DATA

typedef struct st_thr_lock_info THR_LOCK_INFO

typedef struct st_thr_lock_owner THR_LOCK_OWNER

Enumeration Type Documentation

enum enum_thr_lock_result

Enumerator:
THR_LOCK_SUCCESS 
THR_LOCK_ABORTED 
THR_LOCK_WAIT_TIMEOUT 
THR_LOCK_DEADLOCK 

Definition at line 65 of file thr_lock.h.

00065                           { THR_LOCK_SUCCESS= 0, THR_LOCK_ABORTED= 1,
00066                             THR_LOCK_WAIT_TIMEOUT= 2, THR_LOCK_DEADLOCK= 3 };

enum thr_lock_type

Enumerator:
TL_IGNORE 
TL_UNLOCK 
TL_READ 
TL_READ_WITH_SHARED_LOCKS 
TL_READ_HIGH_PRIORITY 
TL_READ_NO_INSERT 
TL_WRITE_ALLOW_WRITE 
TL_WRITE_ALLOW_READ 
TL_WRITE_CONCURRENT_INSERT 
TL_WRITE_DELAYED 
TL_WRITE_LOW_PRIORITY 
TL_WRITE 
TL_WRITE_ONLY 

Definition at line 31 of file thr_lock.h.

00031                    { TL_IGNORE=-1,
00032                      TL_UNLOCK,                 /* UNLOCK ANY LOCK */
00033                      TL_READ,                   /* Read lock */
00034                      TL_READ_WITH_SHARED_LOCKS,
00035                      /* High prior. than TL_WRITE. Allow concurrent insert */
00036                      TL_READ_HIGH_PRIORITY,
00037                      /* READ, Don't allow concurrent insert */
00038                      TL_READ_NO_INSERT,
00039                      /* 
00040                         Write lock, but allow other threads to read / write.
00041                         Used by BDB tables in MySQL to mark that someone is
00042                         reading/writing to the table.
00043                       */
00044                      TL_WRITE_ALLOW_WRITE,
00045                      /*
00046                         Write lock, but allow other threads to read.
00047                         Used by ALTER TABLE in MySQL to allow readers
00048                         to use the table until ALTER TABLE is finished.
00049                      */
00050                      TL_WRITE_ALLOW_READ,
00051                      /*
00052                        WRITE lock used by concurrent insert. Will allow
00053                        READ, if one could use concurrent insert on table.
00054                      */
00055                      TL_WRITE_CONCURRENT_INSERT,
00056                      /* Write used by INSERT DELAYED.  Allows READ locks */
00057                      TL_WRITE_DELAYED,
00058                      /* WRITE lock that has lower priority than TL_READ */
00059                      TL_WRITE_LOW_PRIORITY,
00060                      /* Normal WRITE lock */
00061                      TL_WRITE,
00062                      /* Abort new lock request with an error */
00063                      TL_WRITE_ONLY};

Function Documentation

my_bool init_thr_lock ( void   ) 

Referenced by handle_delayed_insert(), init_event_thread(), and init_server_components().

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void thr_abort_locks ( THR_LOCK *  lock,
bool  upgrade_lock 
)

Referenced by mysql_lock_abort().

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my_bool thr_abort_locks_for_thread ( THR_LOCK *  lock,
pthread_t  thread 
)

Referenced by mysql_lock_abort_for_thread().

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void thr_downgrade_write_lock ( THR_LOCK_DATA *  data,
enum thr_lock_type  new_lock_type 
)

Referenced by mysql_lock_downgrade_write().

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enum enum_thr_lock_result thr_lock ( THR_LOCK_DATA *  data,
THR_LOCK_OWNER *  owner,
enum thr_lock_type  lock_type 
)

void thr_lock_data_init ( THR_LOCK *  lock,
THR_LOCK_DATA *  data,
void *  status_param 
)

Referenced by heap_open(), ha_example::open(), ha_tina::open(), ha_blackhole::open(), and ha_archive::open().

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void thr_lock_delete ( THR_LOCK *  lock  ) 

Referenced by ha_blackhole::close(), free_share(), ha_archive::free_share(), get_share(), hp_free(), and mi_close().

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void thr_lock_info_init ( THR_LOCK_INFO *  info  ) 

void thr_lock_init ( THR_LOCK *  lock  ) 

Referenced by get_share(), ha_archive::get_share(), and ha_blackhole::open().

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enum enum_thr_lock_result thr_multi_lock ( THR_LOCK_DATA **  data,
uint  count,
THR_LOCK_OWNER *  owner 
)

Referenced by mysql_lock_tables().

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void thr_multi_unlock ( THR_LOCK_DATA **  data,
uint  count 
)

Referenced by mysql_unlock_tables().

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void thr_print_locks ( void   ) 

Referenced by mysql_print_status().

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my_bool thr_reschedule_write_lock ( THR_LOCK_DATA *  data  ) 

Referenced by delayed_insert::handle_inserts().

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void thr_unlock ( THR_LOCK_DATA *  data  ) 

my_bool thr_upgrade_write_delay_lock ( THR_LOCK_DATA *  data  ) 

Referenced by delayed_insert::handle_inserts().

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Variable Documentation

ulong locks_immediate

ulong locks_waited

ulong max_write_lock_count

ulong table_lock_wait_timeout

my_bool thr_lock_inited

pthread_mutex_t THR_LOCK_lock

Referenced by display_table_locks().

LIST* thr_lock_thread_list

Referenced by display_table_locks().

enum thr_lock_type thr_upgraded_concurrent_insert_lock

Referenced by get_one_option().

Generated on Sat Sep 9 01:49:31 2006 for MySQL 5.1 by  doxygen 1.4.7