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/* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
#ifndef PFS_EVENTS_WAITS_H
#define PFS_EVENTS_WAITS_H
/**
@file storage/perfschema/pfs_events_waits.h
Events waits data structures (declarations).
*/
#include "pfs_column_types.h"
#include "pfs_lock.h"
struct PFS_mutex;
struct PFS_rwlock;
struct PFS_cond;
struct PFS_table;
struct PFS_file;
struct PFS_thread;
struct PFS_instr_class;
/** Class of a wait event. */
enum events_waits_class
{
NO_WAIT_CLASS= 0,
WAIT_CLASS_MUTEX,
WAIT_CLASS_RWLOCK,
WAIT_CLASS_COND,
WAIT_CLASS_TABLE,
WAIT_CLASS_FILE
};
/** State of a timer. */
enum timer_state
{
/**
Not timed.
In this state, TIMER_START, TIMER_END and TIMER_WAIT are NULL.
*/
TIMER_STATE_UNTIMED,
/**
About to start.
In this state, TIMER_START, TIMER_END and TIMER_WAIT are NULL.
*/
TIMER_STATE_STARTING,
/**
Started, but not yet ended.
In this state, TIMER_START has a value, TIMER_END and TIMER_WAIT are NULL.
*/
TIMER_STATE_STARTED,
/**
Ended.
In this state, TIMER_START, TIMER_END and TIMER_WAIT have a value.
*/
TIMER_STATE_TIMED
};
/** Target object a wait event is waiting on. */
union events_waits_target
{
/** Mutex waited on. */
PFS_mutex *m_mutex;
/** RWLock waited on. */
PFS_rwlock *m_rwlock;
/** Condition waited on. */
PFS_cond *m_cond;
/** Table waited on. */
PFS_table *m_table;
/** File waited on. */
PFS_file *m_file;
};
/** A wait event record. */
struct PFS_events_waits
{
/**
The type of wait.
Readers:
- the consumer threads.
Writers:
- the producer threads, in the instrumentation.
Out of bound Writers:
- TRUNCATE EVENTS_WAITS_CURRENT
- TRUNCATE EVENTS_WAITS_HISTORY
- TRUNCATE EVENTS_WAITS_HISTORY_LONG
*/
events_waits_class m_wait_class;
/** Executing thread. */
PFS_thread *m_thread;
/** Instrument metadata. */
PFS_instr_class *m_class;
/** Timer state. */
enum timer_state m_timer_state;
/** Event id. */
ulonglong m_event_id;
/**
Timer start.
This member is populated only if m_timed is true.
*/
ulonglong m_timer_start;
/**
Timer end.
This member is populated only if m_timed is true.
*/
ulonglong m_timer_end;
/** Schema name. */
const char *m_schema_name;
/** Length in bytes of @c m_schema_name. */
uint m_schema_name_length;
/** Object name. */
const char *m_object_name;
/** Length in bytes of @c m_object_name. */
uint m_object_name_length;
/** Address in memory of the object instance waited on. */
const void *m_object_instance_addr;
/** Location of the instrumentation in the source code (file name). */
const char *m_source_file;
/** Location of the instrumentation in the source code (line number). */
uint m_source_line;
/** Operation performed. */
enum_operation_type m_operation;
/**
Number of bytes read/written.
This member is populated for file READ/WRITE operations only.
*/
size_t m_number_of_bytes;
};
/**
A wait locker.
A locker is a transient helper structure used by the instrumentation
during the recording of a wait.
*/
struct PFS_wait_locker
{
/** The timer used to measure the wait. */
enum_timer_name m_timer_name;
/** The object waited on. */
events_waits_target m_target;
/** The wait data recorded. */
PFS_events_waits m_waits_current;
};
void insert_events_waits_history(PFS_thread *thread, PFS_events_waits *wait);
void insert_events_waits_history_long(PFS_events_waits *wait);
extern bool flag_events_waits_current;
extern bool flag_events_waits_history;
extern bool flag_events_waits_history_long;
extern bool flag_events_waits_summary_by_thread_by_event_name;
extern bool flag_events_waits_summary_by_event_name;
extern bool flag_events_waits_summary_by_instance;
extern bool flag_events_locks_summary_by_thread_by_name;
extern bool flag_events_locks_summary_by_event_name;
extern bool flag_events_locks_summary_by_instance;
extern bool flag_file_summary_by_event_name;
extern bool flag_file_summary_by_instance;
extern bool events_waits_history_long_full;
extern volatile uint32 events_waits_history_long_index;
extern PFS_events_waits *events_waits_history_long_array;
extern ulong events_waits_history_long_size;
int init_events_waits_history_long(uint events_waits_history_long_sizing);
void cleanup_events_waits_history_long();
void reset_events_waits_current();
void reset_events_waits_history();
void reset_events_waits_history_long();
#endif
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