MySQL  8.0.19
Source Code Documentation
mysql_rwlock_bits.h
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2 
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22 
23 #ifndef COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H
24 #define COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H
25 
26 /**
27  @file
28  Instrumentation helpers for rwlock.
29 */
30 
32 
33 /**
34  @defgroup psi_api_rwlock Rwlock Instrumentation (API)
35  @ingroup psi_api
36  @{
37 */
38 
39 /**
40  An instrumented rwlock structure.
41  @c mysql_rwlock_t is a drop-in replacement for @c pthread_rwlock_t.
42  @sa mysql_rwlock_init
43  @sa mysql_rwlock_rdlock
44  @sa mysql_rwlock_tryrdlock
45  @sa mysql_rwlock_wrlock
46  @sa mysql_rwlock_trywrlock
47  @sa mysql_rwlock_unlock
48  @sa mysql_rwlock_destroy
49 */
51  /** The real rwlock */
53  /**
54  The instrumentation hook.
55  Note that this hook is not conditionally defined,
56  for binary compatibility of the @c mysql_rwlock_t interface.
57  */
58  struct PSI_rwlock *m_psi;
59 };
60 
61 /**
62  An instrumented prlock structure.
63  A prlock is a read write lock that 'prefers readers' (pr).
64  @c mysql_prlock_t is a drop-in replacement for @c rw_pr_lock_t.
65  @sa mysql_prlock_init
66  @sa mysql_prlock_rdlock
67  @sa mysql_prlock_wrlock
68  @sa mysql_prlock_unlock
69  @sa mysql_prlock_destroy
70 */
72  /** The real prlock */
74  /**
75  The instrumentation hook.
76  Note that this hook is not conditionally defined,
77  for binary compatibility of the @c mysql_rwlock_t interface.
78  */
79  struct PSI_rwlock *m_psi;
80 };
81 
82 /** @} (end of group psi_api_rwlock) */
83 
84 #endif /* COMPONENTS_SERVICES_MYSQL_RWLOCK_BITS_H */
mysql_rwlock_t::m_rwlock
native_rw_lock_t m_rwlock
The real rwlock.
Definition: mysql_rwlock_bits.h:52
mysql_rwlock_t
An instrumented rwlock structure.
Definition: mysql_rwlock_bits.h:50
PSI_rwlock
struct PSI_rwlock PSI_rwlock
Definition: psi_rwlock_bits.h:69
thr_rwlock_bits.h
mysql_prlock_t::m_prlock
rw_pr_lock_t m_prlock
The real prlock.
Definition: mysql_rwlock_bits.h:73
rw_pr_lock_t
Portable implementation of special type of read-write locks.
Definition: thr_rwlock_bits.h:94
mysql_prlock_t::m_psi
struct PSI_rwlock * m_psi
The instrumentation hook.
Definition: mysql_rwlock_bits.h:79
native_rw_lock_t
pthread_rwlock_t native_rw_lock_t
Definition: thr_rwlock_bits.h:60
mysql_prlock_t
An instrumented prlock structure.
Definition: mysql_rwlock_bits.h:71
mysql_rwlock_t::m_psi
struct PSI_rwlock * m_psi
The instrumentation hook.
Definition: mysql_rwlock_bits.h:58