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polardbxengine/storage/perfschema/pfs_instr.cc

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/* Copyright (c) 2008, 2019, 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, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
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, version 2.0, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file storage/perfschema/pfs_instr.cc
Performance schema instruments (implementation).
*/
#include "storage/perfschema/pfs_instr.h"
#include <string.h>
#include <atomic>
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_psi_config.h"
#include "my_sys.h"
#include "sql/mysqld.h" // get_thd_status_var
#include "storage/perfschema/pfs.h"
#include "storage/perfschema/pfs_account.h"
#include "storage/perfschema/pfs_buffer_container.h"
#include "storage/perfschema/pfs_builtin_memory.h"
#include "storage/perfschema/pfs_global.h"
#include "storage/perfschema/pfs_host.h"
#include "storage/perfschema/pfs_instr_class.h"
#include "storage/perfschema/pfs_stat.h"
#include "storage/perfschema/pfs_user.h"
ulong nested_statement_lost = 0;
/**
@addtogroup performance_schema_buffers
@{
*/
/**
Size of the file handle array. @sa file_handle_array.
Signed value, for easier comparisons with a file descriptor number.
*/
long file_handle_max = 0;
/** True when @c file_handle_array is full. */
bool file_handle_full;
/** Number of file handle lost. @sa file_handle_array */
ulong file_handle_lost = 0;
/** Number of EVENTS_WAITS_HISTORY records per thread. */
ulong events_waits_history_per_thread = 0;
/** Number of EVENTS_STAGES_HISTORY records per thread. */
ulong events_stages_history_per_thread = 0;
/** Number of EVENTS_STATEMENTS_HISTORY records per thread. */
ulong events_statements_history_per_thread = 0;
uint statement_stack_max = 0;
size_t pfs_max_digest_length = 0;
size_t pfs_max_sqltext = 0;
/** Number of locker lost. @sa LOCKER_STACK_SIZE. */
ulong locker_lost = 0;
/** Number of statements lost. @sa STATEMENT_STACK_SIZE. */
ulong statement_lost = 0;
/** Size of connection attribute storage per thread */
ulong session_connect_attrs_size_per_thread;
/** Longest connection attributes string seen so far, pre-truncation */
ulong session_connect_attrs_longest_seen = 0;
/** Number of connection attributes lost */
ulong session_connect_attrs_lost = 0;
/** Number of EVENTS_TRANSACTIONS_HISTORY records per thread. */
ulong events_transactions_history_per_thread = 0;
/**
File instrumentation handle array.
@sa file_handle_max
@sa file_handle_lost
*/
PFS_file **file_handle_array = NULL;
PFS_stage_stat *global_instr_class_stages_array = NULL;
PFS_statement_stat *global_instr_class_statements_array = NULL;
PFS_histogram global_statements_histogram;
std::atomic<PFS_memory_shared_stat *> global_instr_class_memory_array{nullptr};
static PFS_cacheline_atomic_uint64 thread_internal_id_counter;
/** Hash table for instrumented files. */
LF_HASH filename_hash;
/** True if filename_hash is initialized. */
static bool filename_hash_inited = false;
/**
Initialize all the instruments instance buffers.
@param param sizing parameters
@return 0 on success
*/
int init_instruments(const PFS_global_param *param) {
uint index;
/* Make sure init_event_name_sizing is called */
DBUG_ASSERT(wait_class_max != 0);
file_handle_max = param->m_file_handle_sizing;
file_handle_full = false;
file_handle_lost = 0;
pfs_max_digest_length = param->m_max_digest_length;
pfs_max_sqltext = param->m_max_sql_text_length;
events_waits_history_per_thread = param->m_events_waits_history_sizing;
events_stages_history_per_thread = param->m_events_stages_history_sizing;
events_statements_history_per_thread =
param->m_events_statements_history_sizing;
statement_stack_max = param->m_statement_stack_sizing;
events_transactions_history_per_thread =
param->m_events_transactions_history_sizing;
session_connect_attrs_size_per_thread = param->m_session_connect_attrs_sizing;
session_connect_attrs_lost = 0;
file_handle_array = NULL;
thread_internal_id_counter.m_u64.store(0);
if (global_mutex_container.init(param->m_mutex_sizing)) {
return 1;
}
if (global_rwlock_container.init(param->m_rwlock_sizing)) {
return 1;
}
if (global_cond_container.init(param->m_cond_sizing)) {
return 1;
}
if (global_file_container.init(param->m_file_sizing)) {
return 1;
}
if (file_handle_max > 0) {
file_handle_array =
PFS_MALLOC_ARRAY(&builtin_memory_file_handle, file_handle_max,
sizeof(PFS_file *), PFS_file *, MYF(MY_ZEROFILL));
if (unlikely(file_handle_array == NULL)) {
return 1;
}
}
if (global_table_container.init(param->m_table_sizing)) {
return 1;
}
if (global_socket_container.init(param->m_socket_sizing)) {
return 1;
}
if (global_mdl_container.init(param->m_metadata_lock_sizing)) {
return 1;
}
if (global_thread_container.init(param->m_thread_sizing)) {
return 1;
}
if (stage_class_max > 0) {
global_instr_class_stages_array = PFS_MALLOC_ARRAY(
&builtin_memory_global_stages, stage_class_max, sizeof(PFS_stage_stat),
PFS_stage_stat, MYF(MY_ZEROFILL));
if (unlikely(global_instr_class_stages_array == NULL)) {
return 1;
}
for (index = 0; index < stage_class_max; index++) {
global_instr_class_stages_array[index].reset();
}
}
if (statement_class_max > 0) {
global_instr_class_statements_array = PFS_MALLOC_ARRAY(
&builtin_memory_global_statements, statement_class_max,
sizeof(PFS_statement_stat), PFS_statement_stat, MYF(MY_ZEROFILL));
if (unlikely(global_instr_class_statements_array == NULL)) {
return 1;
}
for (index = 0; index < statement_class_max; index++) {
global_instr_class_statements_array[index].reset();
}
}
if (memory_class_max > 0) {
global_instr_class_memory_array =
PFS_MALLOC_ARRAY(&builtin_memory_global_memory, memory_class_max,
sizeof(PFS_memory_shared_stat), PFS_memory_shared_stat,
MYF(MY_ZEROFILL));
if (unlikely(global_instr_class_memory_array.load() == nullptr)) {
return 1;
}
for (index = 0; index < memory_class_max; index++) {
global_instr_class_memory_array[index].reset();
}
}
return 0;
}
/** Cleanup all the instruments buffers. */
void cleanup_instruments(void) {
global_mutex_container.cleanup();
global_rwlock_container.cleanup();
global_cond_container.cleanup();
global_file_container.cleanup();
PFS_FREE_ARRAY(&builtin_memory_file_handle, file_handle_max,
sizeof(PFS_file *), file_handle_array);
file_handle_array = NULL;
file_handle_max = 0;
global_table_container.cleanup();
global_socket_container.cleanup();
global_mdl_container.cleanup();
global_thread_container.cleanup();
PFS_FREE_ARRAY(&builtin_memory_global_stages, stage_class_max,
sizeof(PFS_stage_stat), global_instr_class_stages_array);
global_instr_class_stages_array = NULL;
PFS_FREE_ARRAY(&builtin_memory_global_statements, statement_class_max,
sizeof(PFS_statement_stat),
global_instr_class_statements_array);
global_instr_class_statements_array = NULL;
PFS_FREE_ARRAY(&builtin_memory_global_memory, memory_class_max,
sizeof(PFS_memory_shared_stat),
global_instr_class_memory_array);
global_instr_class_memory_array = nullptr;
}
/** Get hash table key for instrumented files. */
static const uchar *filename_hash_get_key(const uchar *entry, size_t *length) {
const PFS_file *const *typed_entry;
const PFS_file *file;
const void *result;
typed_entry = reinterpret_cast<const PFS_file *const *>(entry);
DBUG_ASSERT(typed_entry != NULL);
file = *typed_entry;
DBUG_ASSERT(file != NULL);
*length = file->m_filename_length;
result = file->m_filename;
return reinterpret_cast<const uchar *>(result);
}
/**
Initialize the file name hash.
@return 0 on success
*/
int init_file_hash(const PFS_global_param *param) {
if ((!filename_hash_inited) && (param->m_file_sizing != 0)) {
lf_hash_init(&filename_hash, sizeof(PFS_file *), LF_HASH_UNIQUE, 0, 0,
filename_hash_get_key, &my_charset_bin);
filename_hash_inited = true;
}
return 0;
}
/** Cleanup the file name hash. */
void cleanup_file_hash(void) {
if (filename_hash_inited) {
lf_hash_destroy(&filename_hash);
filename_hash_inited = false;
}
}
/**
Create instrumentation for a mutex instance.
@param klass the mutex class
@param identity the mutex address
@return a mutex instance, or NULL
*/
PFS_mutex *create_mutex(PFS_mutex_class *klass, const void *identity) {
PFS_mutex *pfs;
pfs_dirty_state dirty_state;
unsigned int partition;
/*
There are 9 volatility defined in psi.h,
but since most are still unused,
mapping this to only 2 PFS_MUTEX_PARTITIONS.
*/
if (klass->m_volatility >= PSI_VOLATILITY_SESSION) {
partition = 1;
} else {
partition = 0;
}
pfs = global_mutex_container.allocate(&dirty_state, partition);
if (pfs != NULL) {
pfs->m_identity = identity;
pfs->m_class = klass;
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
pfs->m_mutex_stat.reset();
pfs->m_owner = NULL;
pfs->m_last_locked = 0;
pfs->m_lock.dirty_to_allocated(&dirty_state);
if (klass->is_singleton()) {
klass->m_singleton = pfs;
}
}
return pfs;
}
/**
Destroy instrumentation for a mutex instance.
@param pfs the mutex to destroy
*/
void destroy_mutex(PFS_mutex *pfs) {
DBUG_ASSERT(pfs != NULL);
PFS_mutex_class *klass = pfs->m_class;
/* Aggregate to EVENTS_WAITS_SUMMARY_GLOBAL_BY_EVENT_NAME */
klass->m_mutex_stat.aggregate(&pfs->m_mutex_stat);
pfs->m_mutex_stat.reset();
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
global_mutex_container.deallocate(pfs);
}
/**
Create instrumentation for a rwlock instance.
@param klass the rwlock class
@param identity the rwlock address
@return a rwlock instance, or NULL
*/
PFS_rwlock *create_rwlock(PFS_rwlock_class *klass, const void *identity) {
PFS_rwlock *pfs;
pfs_dirty_state dirty_state;
pfs = global_rwlock_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_identity = identity;
pfs->m_class = klass;
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
pfs->m_rwlock_stat.reset();
pfs->m_writer = NULL;
pfs->m_readers = 0;
pfs->m_last_written = 0;
pfs->m_last_read = 0;
pfs->m_lock.dirty_to_allocated(&dirty_state);
if (klass->is_singleton()) {
klass->m_singleton = pfs;
}
}
return pfs;
}
/**
Destroy instrumentation for a rwlock instance.
@param pfs the rwlock to destroy
*/
void destroy_rwlock(PFS_rwlock *pfs) {
DBUG_ASSERT(pfs != NULL);
PFS_rwlock_class *klass = pfs->m_class;
/* Aggregate to EVENTS_WAITS_SUMMARY_GLOBAL_BY_EVENT_NAME */
klass->m_rwlock_stat.aggregate(&pfs->m_rwlock_stat);
pfs->m_rwlock_stat.reset();
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
global_rwlock_container.deallocate(pfs);
}
/**
Create instrumentation for a condition instance.
@param klass the condition class
@param identity the condition address
@return a condition instance, or NULL
*/
PFS_cond *create_cond(PFS_cond_class *klass, const void *identity) {
PFS_cond *pfs;
pfs_dirty_state dirty_state;
pfs = global_cond_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_identity = identity;
pfs->m_class = klass;
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
pfs->m_cond_stat.reset();
pfs->m_lock.dirty_to_allocated(&dirty_state);
if (klass->is_singleton()) {
klass->m_singleton = pfs;
}
}
return pfs;
}
/**
Destroy instrumentation for a condition instance.
@param pfs the condition to destroy
*/
void destroy_cond(PFS_cond *pfs) {
DBUG_ASSERT(pfs != NULL);
PFS_cond_class *klass = pfs->m_class;
/* Aggregate to EVENTS_WAITS_SUMMARY_GLOBAL_BY_EVENT_NAME */
klass->m_cond_stat.aggregate(&pfs->m_cond_stat);
pfs->m_cond_stat.reset();
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
global_cond_container.deallocate(pfs);
}
PFS_thread *PFS_thread::get_current_thread() { return THR_PFS; }
void PFS_thread::reset_session_connect_attrs() {
m_session_connect_attrs_length = 0;
m_session_connect_attrs_cs_number = 0;
if ((m_session_connect_attrs != NULL) &&
(session_connect_attrs_size_per_thread > 0)) {
/* Do not keep user data */
memset(m_session_connect_attrs, 0, session_connect_attrs_size_per_thread);
}
}
void PFS_thread::set_history_derived_flags() {
if (m_history) {
m_flag_events_waits_history = flag_events_waits_history;
m_flag_events_waits_history_long = flag_events_waits_history_long;
m_flag_events_stages_history = flag_events_stages_history;
m_flag_events_stages_history_long = flag_events_stages_history_long;
m_flag_events_statements_history = flag_events_statements_history;
m_flag_events_statements_history_long = flag_events_statements_history_long;
m_flag_events_transactions_history = flag_events_transactions_history;
m_flag_events_transactions_history_long =
flag_events_transactions_history_long;
} else {
m_flag_events_waits_history = false;
m_flag_events_waits_history_long = false;
m_flag_events_stages_history = false;
m_flag_events_stages_history_long = false;
m_flag_events_statements_history = false;
m_flag_events_statements_history_long = false;
m_flag_events_transactions_history = false;
m_flag_events_transactions_history_long = false;
}
}
void PFS_thread::rebase_memory_stats() {
PFS_memory_safe_stat *stat = m_instr_class_memory_stats;
PFS_memory_safe_stat *stat_last = stat + memory_class_max;
for (; stat < stat_last; stat++) {
stat->reset();
}
}
void PFS_thread::carry_memory_stat_delta(PFS_memory_stat_delta *delta,
uint index) {
if (m_account != NULL) {
m_account->carry_memory_stat_delta(delta, index);
return;
}
if (m_user != NULL) {
m_user->carry_memory_stat_delta(delta, index);
/* do not return, need to process m_host below */
}
if (m_host != NULL) {
m_host->carry_memory_stat_delta(delta, index);
return;
}
carry_global_memory_stat_delta(delta, index);
}
void carry_global_memory_stat_delta(PFS_memory_stat_delta *delta, uint index) {
PFS_memory_shared_stat *stat;
PFS_memory_stat_delta delta_buffer;
stat = &global_instr_class_memory_array[index];
(void)stat->apply_delta(delta, &delta_buffer);
}
/**
Create instrumentation for a thread instance.
@param klass the thread class
@param identity the thread address,
or a value characteristic of this thread
@param processlist_id the PROCESSLIST id,
or 0 if unknown
@return a thread instance, or NULL
*/
PFS_thread *create_thread(PFS_thread_class *klass,
const void *identity MY_ATTRIBUTE((unused)),
ulonglong processlist_id) {
PFS_thread *pfs;
pfs_dirty_state dirty_state;
pfs = global_thread_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_thread_internal_id = thread_internal_id_counter.m_u64++;
pfs->m_parent_thread_internal_id = 0;
pfs->m_processlist_id = static_cast<ulong>(processlist_id);
pfs->m_thread_os_id = 0;
pfs->m_system_thread = !(klass->m_flags & PSI_FLAG_USER);
pfs->m_event_id = 1;
pfs->m_stmt_lock.set_allocated();
pfs->m_session_lock.set_allocated();
pfs->set_enabled(klass->m_enabled);
pfs->set_history(klass->m_history);
pfs->m_class = klass;
pfs->m_events_waits_current = &pfs->m_events_waits_stack[WAIT_STACK_BOTTOM];
pfs->m_waits_history_full = false;
pfs->m_waits_history_index = 0;
pfs->m_stages_history_full = false;
pfs->m_stages_history_index = 0;
pfs->m_statements_history_full = false;
pfs->m_statements_history_index = 0;
pfs->m_transactions_history_full = false;
pfs->m_transactions_history_index = 0;
pfs->reset_stats();
pfs->reset_session_connect_attrs();
pfs->m_filename_hash_pins = NULL;
pfs->m_table_share_hash_pins = NULL;
pfs->m_setup_actor_hash_pins = NULL;
pfs->m_setup_object_hash_pins = NULL;
pfs->m_user_hash_pins = NULL;
pfs->m_account_hash_pins = NULL;
pfs->m_host_hash_pins = NULL;
pfs->m_digest_hash_pins = NULL;
pfs->m_program_hash_pins = NULL;
pfs->m_username_length = 0;
pfs->m_hostname_length = 0;
pfs->m_dbname_length = 0;
pfs->m_groupname_length = 0;
pfs->m_user_data = NULL;
pfs->m_command = 0;
pfs->m_start_time = 0;
pfs->m_stage = 0;
pfs->m_stage_progress = NULL;
pfs->m_processlist_info[0] = '\0';
pfs->m_processlist_info_length = 0;
pfs->m_connection_type = NO_VIO_TYPE;
pfs->m_thd = NULL;
pfs->m_host = NULL;
pfs->m_user = NULL;
pfs->m_account = NULL;
set_thread_account(pfs);
/*
For child waits, by default,
- NESTING_EVENT_ID is NULL
- NESTING_EVENT_TYPE is NULL
*/
PFS_events_waits *child_wait = &pfs->m_events_waits_stack[0];
child_wait->m_event_id = 0;
/*
For child stages, by default,
- NESTING_EVENT_ID is NULL
- NESTING_EVENT_TYPE is NULL
*/
PFS_events_stages *child_stage = &pfs->m_stage_current;
child_stage->m_nesting_event_id = 0;
/* No current stage. */
child_stage->m_class = NULL;
pfs->m_events_statements_count = 0;
pfs->m_transaction_current.m_event_id = 0;
pfs->m_lock.dirty_to_allocated(&dirty_state);
}
return pfs;
}
/**
Find a PFS thread given an internal thread id.
@param thread_id internal thread id
@return pfs pointer if found, else NULL
*/
PFS_thread *find_thread_by_internal_id(ulonglong thread_id) {
PFS_thread *pfs = NULL;
uint index = 0;
PFS_thread_iterator it = global_thread_container.iterate(index);
do {
pfs = it.scan_next(&index);
if (pfs != NULL) {
if (pfs->m_thread_internal_id == thread_id) {
return pfs;
}
}
} while (pfs != NULL);
return NULL;
}
/**
Find a PFS thread given a processlist id.
@param processlist_id PROCESSLIST_ID
@return pfs pointer if found, else NULL
*/
PFS_thread *find_thread_by_processlist_id(ulonglong processlist_id) {
PFS_thread *pfs = NULL;
uint index = 0;
PFS_thread_iterator it = global_thread_container.iterate(index);
do {
pfs = it.scan_next(&index);
if (pfs != NULL) {
if (pfs->m_processlist_id == processlist_id) {
return pfs;
}
}
} while (pfs != NULL);
return NULL;
}
PFS_mutex *sanitize_mutex(PFS_mutex *unsafe) {
return global_mutex_container.sanitize(unsafe);
}
PFS_rwlock *sanitize_rwlock(PFS_rwlock *unsafe) {
return global_rwlock_container.sanitize(unsafe);
}
PFS_cond *sanitize_cond(PFS_cond *unsafe) {
return global_cond_container.sanitize(unsafe);
}
/**
Sanitize a PFS_thread pointer.
Validate that the PFS_thread is part of thread_array.
Sanitizing data is required when the data can be
damaged with expected race conditions, for example
involving EVENTS_WAITS_HISTORY_LONG.
@param unsafe the pointer to sanitize
@return a valid pointer, or NULL
*/
PFS_thread *sanitize_thread(PFS_thread *unsafe) {
return global_thread_container.sanitize(unsafe);
}
PFS_file *sanitize_file(PFS_file *unsafe) {
return global_file_container.sanitize(unsafe);
}
PFS_socket *sanitize_socket(PFS_socket *unsafe) {
return global_socket_container.sanitize(unsafe);
}
PFS_metadata_lock *sanitize_metadata_lock(PFS_metadata_lock *unsafe) {
return global_mdl_container.sanitize(unsafe);
}
/**
Destroy instrumentation for a thread instance.
@param pfs the thread to destroy
*/
void destroy_thread(PFS_thread *pfs) {
DBUG_ASSERT(pfs != NULL);
pfs->reset_session_connect_attrs();
if (pfs->m_account != NULL) {
pfs->m_account->release();
pfs->m_account = NULL;
DBUG_ASSERT(pfs->m_user == NULL);
DBUG_ASSERT(pfs->m_host == NULL);
} else {
if (pfs->m_user != NULL) {
pfs->m_user->release();
pfs->m_user = NULL;
}
if (pfs->m_host != NULL) {
pfs->m_host->release();
pfs->m_host = NULL;
}
}
if (pfs->m_filename_hash_pins) {
lf_hash_put_pins(pfs->m_filename_hash_pins);
pfs->m_filename_hash_pins = NULL;
}
if (pfs->m_table_share_hash_pins) {
lf_hash_put_pins(pfs->m_table_share_hash_pins);
pfs->m_table_share_hash_pins = NULL;
}
if (pfs->m_setup_actor_hash_pins) {
lf_hash_put_pins(pfs->m_setup_actor_hash_pins);
pfs->m_setup_actor_hash_pins = NULL;
}
if (pfs->m_setup_object_hash_pins) {
lf_hash_put_pins(pfs->m_setup_object_hash_pins);
pfs->m_setup_object_hash_pins = NULL;
}
if (pfs->m_user_hash_pins) {
lf_hash_put_pins(pfs->m_user_hash_pins);
pfs->m_user_hash_pins = NULL;
}
if (pfs->m_account_hash_pins) {
lf_hash_put_pins(pfs->m_account_hash_pins);
pfs->m_account_hash_pins = NULL;
}
if (pfs->m_host_hash_pins) {
lf_hash_put_pins(pfs->m_host_hash_pins);
pfs->m_host_hash_pins = NULL;
}
if (pfs->m_digest_hash_pins) {
lf_hash_put_pins(pfs->m_digest_hash_pins);
pfs->m_digest_hash_pins = NULL;
}
if (pfs->m_program_hash_pins) {
lf_hash_put_pins(pfs->m_program_hash_pins);
pfs->m_program_hash_pins = NULL;
}
global_thread_container.deallocate(pfs);
}
/**
Get the hash pins for @c filename_hash.
@param thread The running thread.
@returns The LF_HASH pins for the thread.
*/
static LF_PINS *get_filename_hash_pins(PFS_thread *thread) {
if (unlikely(thread->m_filename_hash_pins == NULL)) {
if (!filename_hash_inited) {
return NULL;
}
thread->m_filename_hash_pins = lf_hash_get_pins(&filename_hash);
}
return thread->m_filename_hash_pins;
}
/**
Find or create instrumentation for a file instance by file name.
@param thread the executing instrumented thread
@param klass the file class
@param filename the file name
@param len the length in bytes of filename
@param create create a file instance if none found
@return a file instance, or NULL
*/
PFS_file *find_or_create_file(PFS_thread *thread, PFS_file_class *klass,
const char *filename, uint len, bool create) {
PFS_file *pfs;
DBUG_ASSERT(klass != NULL || !create);
LF_PINS *pins = get_filename_hash_pins(thread);
if (unlikely(pins == NULL)) {
global_file_container.m_lost++;
return NULL;
}
char safe_buffer[FN_REFLEN];
const char *safe_filename;
if (len >= FN_REFLEN) {
/*
The instrumented code uses file names that exceeds FN_REFLEN.
This could be legal for instrumentation on non mysys APIs,
so we support it.
Truncate the file name so that:
- it fits into pfs->m_filename
- it is safe to use mysys apis to normalize the file name.
*/
memcpy(safe_buffer, filename, FN_REFLEN - 1);
safe_buffer[FN_REFLEN - 1] = 0;
safe_filename = safe_buffer;
} else {
safe_filename = filename;
}
/*
Normalize the file name to avoid duplicates when using aliases:
- absolute or relative paths
- symbolic links
Names are resolved as follows:
- /real/path/to/real_file ==> same
- /path/with/link/to/real_file ==> /real/path/to/real_file
- real_file ==> /real/path/to/real_file
- ./real_file ==> /real/path/to/real_file
- /real/path/to/sym_link ==> same
- /path/with/link/to/sym_link ==> /real/path/to/sym_link
- sym_link ==> /real/path/to/sym_link
- ./sym_link ==> /real/path/to/sym_link
When the last component of a file is a symbolic link,
the last component is *not* resolved, so that all file I/O
operations on a link (create, read, write, delete) are counted
against the link itself, not the target file.
Resolving the name would lead to create counted against the link,
and read/write/delete counted against the target, leading to
incoherent results and instrumentation leaks.
Also note that, when creating files, this name resolution
works properly for files that do not exist (yet) on the file system.
*/
char buffer[FN_REFLEN];
char dirbuffer[FN_REFLEN];
size_t dirlen;
const char *normalized_filename;
uint normalized_length;
dirlen = dirname_length(safe_filename);
if (dirlen == 0) {
dirbuffer[0] = FN_CURLIB;
dirbuffer[1] = FN_LIBCHAR;
dirbuffer[2] = '\0';
} else {
memcpy(dirbuffer, safe_filename, dirlen);
dirbuffer[dirlen] = '\0';
}
if (my_realpath(buffer, dirbuffer, MYF(0)) != 0) {
global_file_container.m_lost++;
return NULL;
}
/* Append the unresolved file name to the resolved path */
char *ptr = buffer + strlen(buffer);
char *buf_end = &buffer[sizeof(buffer) - 1];
if ((buf_end > ptr) && (*(ptr - 1) != FN_LIBCHAR)) {
*ptr++ = FN_LIBCHAR;
}
if (buf_end > ptr) {
strncpy(ptr, safe_filename + dirlen, buf_end - ptr);
}
*buf_end = '\0';
normalized_filename = buffer;
normalized_length = (uint)strlen(normalized_filename);
PFS_file **entry;
uint retry_count = 0;
const uint retry_max = 3;
pfs_dirty_state dirty_state;
search:
entry = reinterpret_cast<PFS_file **>(lf_hash_search(
&filename_hash, pins, normalized_filename, normalized_length));
if (entry && (entry != MY_LF_ERRPTR)) {
pfs = *entry;
pfs->m_file_stat.m_open_count++;
lf_hash_search_unpin(pins);
return pfs;
}
lf_hash_search_unpin(pins);
if (!create) {
/* No lost counter, just looking for the file existence. */
return NULL;
}
pfs = global_file_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_class = klass;
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
memcpy(pfs->m_filename, normalized_filename, normalized_length);
pfs->m_filename[normalized_length] = '\0';
pfs->m_filename_length = normalized_length;
pfs->m_file_stat.m_open_count = 1;
pfs->m_file_stat.m_io_stat.reset();
pfs->m_identity = (const void *)pfs;
pfs->m_temporary = false;
int res;
pfs->m_lock.dirty_to_allocated(&dirty_state);
res = lf_hash_insert(&filename_hash, pins, &pfs);
if (likely(res == 0)) {
if (klass->is_singleton()) {
klass->m_singleton = pfs;
}
return pfs;
}
global_file_container.deallocate(pfs);
if (res > 0) {
/* Duplicate insert by another thread */
if (++retry_count > retry_max) {
/* Avoid infinite loops */
global_file_container.m_lost++;
return NULL;
}
goto search;
}
/* OOM in lf_hash_insert */
global_file_container.m_lost++;
return NULL;
}
return NULL;
}
/**
Find a file instrumentation instance by name, and rename it
@param thread the executing instrumented thread
@param old_filename the file to be renamed
@param old_len the length in bytes of the old filename
@param new_filename the new file name
@param new_len the length in bytes of the new filename
*/
void find_and_rename_file(PFS_thread *thread, const char *old_filename,
uint old_len, const char *new_filename,
uint new_len) {
PFS_file *pfs;
DBUG_ASSERT(thread != NULL);
LF_PINS *pins = get_filename_hash_pins(thread);
if (unlikely(pins == NULL)) {
global_file_container.m_lost++;
return;
}
/*
Normalize the old file name.
*/
char safe_buffer[FN_REFLEN];
const char *safe_filename;
if (old_len >= FN_REFLEN) {
memcpy(safe_buffer, old_filename, FN_REFLEN - 1);
safe_buffer[FN_REFLEN - 1] = 0;
safe_filename = safe_buffer;
} else {
safe_filename = old_filename;
}
char buffer[FN_REFLEN];
char dirbuffer[FN_REFLEN];
size_t dirlen;
const char *normalized_filename;
uint normalized_length;
dirlen = dirname_length(safe_filename);
if (dirlen == 0) {
dirbuffer[0] = FN_CURLIB;
dirbuffer[1] = FN_LIBCHAR;
dirbuffer[2] = '\0';
} else {
memcpy(dirbuffer, safe_filename, dirlen);
dirbuffer[dirlen] = '\0';
}
if (my_realpath(buffer, dirbuffer, MYF(0)) != 0) {
global_file_container.m_lost++;
return;
}
/* Append the unresolved file name to the resolved path */
char *ptr = buffer + strlen(buffer);
char *buf_end = &buffer[sizeof(buffer) - 1];
if ((buf_end > ptr) && (*(ptr - 1) != FN_LIBCHAR)) {
*ptr++ = FN_LIBCHAR;
}
if (buf_end > ptr) {
strncpy(ptr, safe_filename + dirlen, buf_end - ptr);
}
*buf_end = '\0';
normalized_filename = buffer;
normalized_length = (uint)strlen(normalized_filename);
PFS_file **entry;
entry = reinterpret_cast<PFS_file **>(lf_hash_search(
&filename_hash, pins, normalized_filename, normalized_length));
if (entry && (entry != MY_LF_ERRPTR)) {
pfs = *entry;
} else {
lf_hash_search_unpin(pins);
return;
}
lf_hash_delete(&filename_hash, pins, pfs->m_filename, pfs->m_filename_length);
/*
Normalize the new file name.
*/
if (new_len >= FN_REFLEN) {
memcpy(safe_buffer, new_filename, FN_REFLEN - 1);
safe_buffer[FN_REFLEN - 1] = 0;
safe_filename = safe_buffer;
} else {
safe_filename = new_filename;
}
dirlen = dirname_length(safe_filename);
if (dirlen == 0) {
dirbuffer[0] = FN_CURLIB;
dirbuffer[1] = FN_LIBCHAR;
dirbuffer[2] = '\0';
} else {
memcpy(dirbuffer, safe_filename, dirlen);
dirbuffer[dirlen] = '\0';
}
if (my_realpath(buffer, dirbuffer, MYF(0)) != 0) {
global_file_container.m_lost++;
return;
}
/* Append the unresolved file name to the resolved path */
ptr = buffer + strlen(buffer);
buf_end = &buffer[sizeof(buffer) - 1];
if ((buf_end > ptr) && (*(ptr - 1) != FN_LIBCHAR)) {
*ptr++ = FN_LIBCHAR;
}
if (buf_end > ptr) {
strncpy(ptr, safe_filename + dirlen, buf_end - ptr);
}
*buf_end = '\0';
normalized_filename = buffer;
normalized_length = (uint)strlen(normalized_filename);
memcpy(pfs->m_filename, normalized_filename, normalized_length);
pfs->m_filename[normalized_length] = '\0';
pfs->m_filename_length = normalized_length;
int res;
res = lf_hash_insert(&filename_hash, pins, &pfs);
if (likely(res == 0)) {
return;
} else {
global_file_container.deallocate(pfs);
global_file_container.m_lost++;
return;
}
}
/**
Release instrumentation for a file instance.
@param pfs the file to release
*/
void release_file(PFS_file *pfs) {
DBUG_ASSERT(pfs != NULL);
pfs->m_file_stat.m_open_count--;
}
/**
Destroy instrumentation for a file instance.
@param thread the executing thread instrumentation
@param pfs the file to destroy
*/
void destroy_file(PFS_thread *thread, PFS_file *pfs) {
DBUG_ASSERT(thread != NULL);
DBUG_ASSERT(pfs != NULL);
PFS_file_class *klass = pfs->m_class;
/* Aggregate to FILE_SUMMARY_BY_EVENT_NAME */
klass->m_file_stat.aggregate(&pfs->m_file_stat);
pfs->m_file_stat.reset();
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
LF_PINS *pins = get_filename_hash_pins(thread);
DBUG_ASSERT(pins != NULL);
lf_hash_delete(&filename_hash, pins, pfs->m_filename, pfs->m_filename_length);
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
global_file_container.deallocate(pfs);
}
/**
Create instrumentation for a table instance.
@param share the table share
@param opening_thread the opening thread
@param identity the table address
@return a table instance, or NULL
*/
PFS_table *create_table(PFS_table_share *share, PFS_thread *opening_thread,
const void *identity) {
PFS_table *pfs;
pfs_dirty_state dirty_state;
pfs = global_table_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_identity = identity;
pfs->m_share = share;
pfs->m_io_enabled = share->m_enabled && flag_global_instrumentation &&
global_table_io_class.m_enabled;
pfs->m_io_timed = share->m_timed && global_table_io_class.m_timed;
pfs->m_lock_enabled = share->m_enabled && flag_global_instrumentation &&
global_table_lock_class.m_enabled;
pfs->m_lock_timed = share->m_timed && global_table_lock_class.m_timed;
pfs->m_has_io_stats = false;
pfs->m_has_lock_stats = false;
pfs->m_internal_lock = PFS_TL_NONE;
pfs->m_external_lock = PFS_TL_NONE;
share->inc_refcount();
pfs->m_table_stat.fast_reset();
pfs->m_thread_owner = opening_thread;
pfs->m_owner_event_id = opening_thread->m_event_id;
pfs->m_lock.dirty_to_allocated(&dirty_state);
}
return pfs;
}
void PFS_table::sanitized_aggregate(void) {
/*
This thread could be a TRUNCATE on an aggregated summary table,
and not own the table handle.
*/
PFS_table_share *safe_share = sanitize_table_share(m_share);
if (safe_share != NULL) {
if (m_has_io_stats) {
safe_aggregate_io(NULL, &m_table_stat, safe_share);
m_has_io_stats = false;
}
if (m_has_lock_stats) {
safe_aggregate_lock(&m_table_stat, safe_share);
m_has_lock_stats = false;
}
}
}
void PFS_table::sanitized_aggregate_io(void) {
PFS_table_share *safe_share = sanitize_table_share(m_share);
if (safe_share != NULL && m_has_io_stats) {
safe_aggregate_io(NULL, &m_table_stat, safe_share);
m_has_io_stats = false;
}
}
void PFS_table::sanitized_aggregate_lock(void) {
PFS_table_share *safe_share = sanitize_table_share(m_share);
if (safe_share != NULL && m_has_lock_stats) {
safe_aggregate_lock(&m_table_stat, safe_share);
m_has_lock_stats = false;
}
}
void PFS_table::safe_aggregate_io(const TABLE_SHARE *optional_server_share,
PFS_table_stat *table_stat,
PFS_table_share *table_share) {
DBUG_ASSERT(table_stat != NULL);
DBUG_ASSERT(table_share != NULL);
uint key_count = sanitize_index_count(table_share->m_key_count);
PFS_table_share_index *to_stat;
PFS_table_io_stat *from_stat;
uint index;
DBUG_ASSERT(key_count <= MAX_INDEXES);
/* Aggregate stats for each index, if any */
for (index = 0; index < key_count; index++) {
from_stat = &table_stat->m_index_stat[index];
if (from_stat->m_has_data) {
if (optional_server_share != NULL) {
/*
An instrumented thread is closing a table,
and capable of providing index names when
creating index statistics on the fly.
*/
to_stat = table_share->find_or_create_index_stat(optional_server_share,
index);
} else {
/*
A monitoring thread, performing TRUNCATE TABLE,
is asking to flush existing stats from table handles,
but it does not know about index names used in handles.
If the index stat already exists, find it and aggregate to it.
It the index stat does not exist yet, drop the stat and do nothing.
*/
to_stat = table_share->find_index_stat(index);
}
if (to_stat != NULL) {
/* Aggregate to TABLE_IO_SUMMARY */
to_stat->m_stat.aggregate(from_stat);
}
}
}
/* Aggregate stats for the table */
from_stat = &table_stat->m_index_stat[MAX_INDEXES];
if (from_stat->m_has_data) {
to_stat = table_share->find_or_create_index_stat(NULL, MAX_INDEXES);
if (to_stat != NULL) {
/* Aggregate to TABLE_IO_SUMMARY */
to_stat->m_stat.aggregate(from_stat);
}
}
table_stat->fast_reset_io();
}
void PFS_table::safe_aggregate_lock(PFS_table_stat *table_stat,
PFS_table_share *table_share) {
DBUG_ASSERT(table_stat != NULL);
DBUG_ASSERT(table_share != NULL);
PFS_table_lock_stat *from_stat = &table_stat->m_lock_stat;
PFS_table_share_lock *to_stat;
to_stat = table_share->find_or_create_lock_stat();
if (to_stat != NULL) {
/* Aggregate to TABLE_LOCK_SUMMARY */
to_stat->m_stat.aggregate(from_stat);
}
table_stat->fast_reset_lock();
}
/**
Destroy instrumentation for a table instance.
@param pfs the table to destroy
*/
void destroy_table(PFS_table *pfs) {
DBUG_ASSERT(pfs != NULL);
pfs->m_share->dec_refcount();
global_table_container.deallocate(pfs);
}
/**
Create instrumentation for a socket instance.
@param klass the socket class
@param fd the socket file descriptor
@param addr the socket address
@param addr_len the socket address length
@return a socket instance, or NULL
*/
PFS_socket *create_socket(PFS_socket_class *klass, const my_socket *fd,
const struct sockaddr *addr, socklen_t addr_len) {
PFS_socket *pfs;
pfs_dirty_state dirty_state;
uint fd_used = 0;
uint addr_len_used = addr_len;
if (fd != NULL) {
fd_used = *fd;
}
if (addr_len_used > sizeof(sockaddr_storage)) {
addr_len_used = sizeof(sockaddr_storage);
}
pfs = global_socket_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_fd = fd_used;
/* There is no socket object, so we use the instrumentation. */
pfs->m_identity = pfs;
pfs->m_class = klass;
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
pfs->m_idle = false;
pfs->m_socket_stat.reset();
pfs->m_thread_owner = NULL;
pfs->m_addr_len = addr_len_used;
if ((addr != NULL) && (addr_len_used > 0)) {
pfs->m_addr_len = addr_len_used;
memcpy(&pfs->m_sock_addr, addr, addr_len_used);
} else {
pfs->m_addr_len = 0;
}
pfs->m_lock.dirty_to_allocated(&dirty_state);
if (klass->is_singleton()) {
klass->m_singleton = pfs;
}
}
return pfs;
}
/**
Destroy instrumentation for a socket instance.
@param pfs the socket to destroy
*/
void destroy_socket(PFS_socket *pfs) {
DBUG_ASSERT(pfs != NULL);
PFS_socket_class *klass = pfs->m_class;
/* Aggregate to SOCKET_SUMMARY_BY_EVENT_NAME */
klass->m_socket_stat.m_io_stat.aggregate(&pfs->m_socket_stat.m_io_stat);
if (klass->is_singleton()) {
klass->m_singleton = NULL;
}
/* Aggregate to EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME */
PFS_thread *thread = pfs->m_thread_owner;
if (thread != NULL) {
/* Combine stats for all operations */
PFS_single_stat stat;
pfs->m_socket_stat.m_io_stat.sum_waits(&stat);
if (stat.m_count != 0) {
PFS_single_stat *event_name_array;
event_name_array = thread->write_instr_class_waits_stats();
uint index = pfs->m_class->m_event_name_index;
event_name_array[index].aggregate(&stat);
}
}
pfs->m_socket_stat.reset();
pfs->m_thread_owner = NULL;
pfs->m_fd = 0;
pfs->m_addr_len = 0;
global_socket_container.deallocate(pfs);
}
PFS_metadata_lock *create_metadata_lock(void *identity, const MDL_key *mdl_key,
opaque_mdl_type mdl_type,
opaque_mdl_duration mdl_duration,
opaque_mdl_status mdl_status,
const char *src_file, uint src_line) {
PFS_metadata_lock *pfs;
pfs_dirty_state dirty_state;
pfs = global_mdl_container.allocate(&dirty_state);
if (pfs != NULL) {
pfs->m_identity = identity;
pfs->m_enabled =
global_metadata_class.m_enabled && flag_global_instrumentation;
pfs->m_timed = global_metadata_class.m_timed;
pfs->m_mdl_key.mdl_key_init(mdl_key);
pfs->m_mdl_type = mdl_type;
pfs->m_mdl_duration = mdl_duration;
pfs->m_mdl_status = mdl_status;
pfs->m_src_file = src_file;
pfs->m_src_line = src_line;
pfs->m_owner_thread_id = 0;
pfs->m_owner_event_id = 0;
pfs->m_lock.dirty_to_allocated(&dirty_state);
}
return pfs;
}
void destroy_metadata_lock(PFS_metadata_lock *pfs) {
DBUG_ASSERT(pfs != NULL);
global_mdl_container.deallocate(pfs);
}
static void fct_reset_mutex_waits(PFS_mutex *pfs) { pfs->m_mutex_stat.reset(); }
static void reset_mutex_waits_by_instance(void) {
global_mutex_container.apply_all(fct_reset_mutex_waits);
}
static void fct_reset_rwlock_waits(PFS_rwlock *pfs) {
pfs->m_rwlock_stat.reset();
}
static void reset_rwlock_waits_by_instance(void) {
global_rwlock_container.apply_all(fct_reset_rwlock_waits);
}
static void fct_reset_cond_waits(PFS_cond *pfs) { pfs->m_cond_stat.reset(); }
static void reset_cond_waits_by_instance(void) {
global_cond_container.apply_all(fct_reset_cond_waits);
}
static void fct_reset_file_waits(PFS_file *pfs) { pfs->m_file_stat.reset(); }
static void reset_file_waits_by_instance(void) {
global_file_container.apply_all(fct_reset_file_waits);
}
static void fct_reset_socket_waits(PFS_socket *pfs) {
pfs->m_socket_stat.reset();
}
static void reset_socket_waits_by_instance(void) {
global_socket_container.apply_all(fct_reset_socket_waits);
}
/** Reset the wait statistics per object instance. */
void reset_events_waits_by_instance(void) {
reset_mutex_waits_by_instance();
reset_rwlock_waits_by_instance();
reset_cond_waits_by_instance();
reset_file_waits_by_instance();
reset_socket_waits_by_instance();
}
static void fct_reset_file_io(PFS_file *pfs) {
pfs->m_file_stat.m_io_stat.reset();
}
/** Reset the I/O statistics per file instance. */
void reset_file_instance_io(void) {
global_file_container.apply_all(fct_reset_file_io);
}
static void fct_reset_socket_io(PFS_socket *pfs) {
pfs->m_socket_stat.m_io_stat.reset();
}
/** Reset the I/O statistics per socket instance. */
void reset_socket_instance_io(void) {
global_socket_container.apply_all(fct_reset_socket_io);
}
void reset_histogram_global() { global_statements_histogram.reset(); }
void aggregate_all_event_names(PFS_single_stat *from_array,
PFS_single_stat *to_array) {
PFS_single_stat *from;
PFS_single_stat *from_last;
PFS_single_stat *to;
from = from_array;
from_last = from_array + wait_class_max;
to = to_array;
for (; from < from_last; from++, to++) {
if (from->m_count > 0) {
to->aggregate(from);
from->reset();
}
}
}
void aggregate_all_event_names(PFS_single_stat *from_array,
PFS_single_stat *to_array_1,
PFS_single_stat *to_array_2) {
PFS_single_stat *from;
PFS_single_stat *from_last;
PFS_single_stat *to_1;
PFS_single_stat *to_2;
from = from_array;
from_last = from_array + wait_class_max;
to_1 = to_array_1;
to_2 = to_array_2;
for (; from < from_last; from++, to_1++, to_2++) {
if (from->m_count > 0) {
to_1->aggregate(from);
to_2->aggregate(from);
from->reset();
}
}
}
void aggregate_all_stages(PFS_stage_stat *from_array,
PFS_stage_stat *to_array) {
PFS_stage_stat *from;
PFS_stage_stat *from_last;
PFS_stage_stat *to;
from = from_array;
from_last = from_array + stage_class_max;
to = to_array;
for (; from < from_last; from++, to++) {
if (from->m_timer1_stat.m_count > 0) {
to->aggregate(from);
from->reset();
}
}
}
void aggregate_all_stages(PFS_stage_stat *from_array,
PFS_stage_stat *to_array_1,
PFS_stage_stat *to_array_2) {
PFS_stage_stat *from;
PFS_stage_stat *from_last;
PFS_stage_stat *to_1;
PFS_stage_stat *to_2;
from = from_array;
from_last = from_array + stage_class_max;
to_1 = to_array_1;
to_2 = to_array_2;
for (; from < from_last; from++, to_1++, to_2++) {
if (from->m_timer1_stat.m_count > 0) {
to_1->aggregate(from);
to_2->aggregate(from);
from->reset();
}
}
}
void aggregate_all_statements(PFS_statement_stat *from_array,
PFS_statement_stat *to_array) {
PFS_statement_stat *from;
PFS_statement_stat *from_last;
PFS_statement_stat *to;
from = from_array;
from_last = from_array + statement_class_max;
to = to_array;
for (; from < from_last; from++, to++) {
if (from->m_timer1_stat.m_count > 0) {
to->aggregate(from);
from->reset();
}
}
}
void aggregate_all_statements(PFS_statement_stat *from_array,
PFS_statement_stat *to_array_1,
PFS_statement_stat *to_array_2) {
PFS_statement_stat *from;
PFS_statement_stat *from_last;
PFS_statement_stat *to_1;
PFS_statement_stat *to_2;
from = from_array;
from_last = from_array + statement_class_max;
to_1 = to_array_1;
to_2 = to_array_2;
for (; from < from_last; from++, to_1++, to_2++) {
if (from->m_timer1_stat.m_count > 0) {
to_1->aggregate(from);
to_2->aggregate(from);
from->reset();
}
}
}
void aggregate_all_transactions(PFS_transaction_stat *from_array,
PFS_transaction_stat *to_array) {
DBUG_ASSERT(from_array != NULL);
DBUG_ASSERT(to_array != NULL);
if (from_array->count() > 0) {
to_array->aggregate(from_array);
from_array->reset();
}
}
void aggregate_all_transactions(PFS_transaction_stat *from_array,
PFS_transaction_stat *to_array_1,
PFS_transaction_stat *to_array_2) {
DBUG_ASSERT(from_array != NULL);
DBUG_ASSERT(to_array_1 != NULL);
DBUG_ASSERT(to_array_2 != NULL);
if (from_array->count() > 0) {
to_array_1->aggregate(from_array);
to_array_2->aggregate(from_array);
from_array->reset();
}
}
void aggregate_all_errors(PFS_error_stat *from_array,
PFS_error_stat *to_array) {
DBUG_ASSERT(from_array != NULL);
DBUG_ASSERT(to_array != NULL);
if (from_array->count() > 0) {
to_array->aggregate(from_array);
from_array->reset();
}
}
void aggregate_all_errors(PFS_error_stat *from_array,
PFS_error_stat *to_array_1,
PFS_error_stat *to_array_2) {
DBUG_ASSERT(from_array != NULL);
DBUG_ASSERT(to_array_1 != NULL);
DBUG_ASSERT(to_array_2 != NULL);
if (from_array->count() > 0) {
to_array_1->aggregate(from_array);
to_array_2->aggregate(from_array);
from_array->reset();
}
}
void aggregate_all_memory(bool alive, PFS_memory_safe_stat *from_array,
PFS_memory_shared_stat *to_array) {
PFS_memory_safe_stat *from;
PFS_memory_safe_stat *from_last;
PFS_memory_shared_stat *to;
from = from_array;
from_last = from_array + memory_class_max;
to = to_array;
if (alive) {
for (; from < from_last; from++, to++) {
memory_partial_aggregate(from, to);
}
} else {
for (; from < from_last; from++, to++) {
memory_full_aggregate(from, to);
from->reset();
}
}
}
void aggregate_all_memory(bool alive, PFS_memory_shared_stat *from_array,
PFS_memory_shared_stat *to_array) {
PFS_memory_shared_stat *from;
PFS_memory_shared_stat *from_last;
PFS_memory_shared_stat *to;
from = from_array;
from_last = from_array + memory_class_max;
to = to_array;
if (alive) {
for (; from < from_last; from++, to++) {
memory_partial_aggregate(from, to);
}
} else {
for (; from < from_last; from++, to++) {
memory_full_aggregate(from, to);
from->reset();
}
}
}
void aggregate_all_memory(bool alive, PFS_memory_safe_stat *from_array,
PFS_memory_shared_stat *to_array_1,
PFS_memory_shared_stat *to_array_2) {
PFS_memory_safe_stat *from;
PFS_memory_safe_stat *from_last;
PFS_memory_shared_stat *to_1;
PFS_memory_shared_stat *to_2;
from = from_array;
from_last = from_array + memory_class_max;
to_1 = to_array_1;
to_2 = to_array_2;
if (alive) {
for (; from < from_last; from++, to_1++, to_2++) {
memory_partial_aggregate(from, to_1, to_2);
}
} else {
for (; from < from_last; from++, to_1++, to_2++) {
memory_full_aggregate(from, to_1, to_2);
from->reset();
}
}
}
void aggregate_all_memory(bool alive, PFS_memory_shared_stat *from_array,
PFS_memory_shared_stat *to_array_1,
PFS_memory_shared_stat *to_array_2) {
PFS_memory_shared_stat *from;
PFS_memory_shared_stat *from_last;
PFS_memory_shared_stat *to_1;
PFS_memory_shared_stat *to_2;
from = from_array;
from_last = from_array + memory_class_max;
to_1 = to_array_1;
to_2 = to_array_2;
if (alive) {
for (; from < from_last; from++, to_1++, to_2++) {
memory_partial_aggregate(from, to_1, to_2);
}
} else {
for (; from < from_last; from++, to_1++, to_2++) {
memory_full_aggregate(from, to_1, to_2);
from->reset();
}
}
}
void aggregate_thread_status(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
THD *thd = thread->m_thd;
bool aggregated = false;
if (thd == NULL) {
return;
}
System_status_var *status_var = get_thd_status_var(thd, &aggregated);
if (unlikely(aggregated)) {
/* THD is being closed, status has already been aggregated. */
return;
}
if (likely(safe_account != NULL)) {
safe_account->aggregate_status_stats(status_var);
return;
}
if (safe_user != NULL) {
safe_user->aggregate_status_stats(status_var);
}
if (safe_host != NULL) {
safe_host->aggregate_status_stats(status_var);
}
return;
}
static void aggregate_thread_stats(PFS_thread *, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (likely(safe_account != NULL)) {
safe_account->m_disconnected_count++;
}
if (safe_user != NULL) {
safe_user->m_disconnected_count++;
}
if (safe_host != NULL) {
safe_host->m_disconnected_count++;
}
/* There is no global table for connections statistics. */
return;
}
void aggregate_thread(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
/* No HAVE_PSI_???_INTERFACE flag, waits cover multiple instrumentations */
aggregate_thread_waits(thread, safe_account, safe_user, safe_host);
#ifdef HAVE_PSI_STAGE_INTERFACE
aggregate_thread_stages(thread, safe_account, safe_user, safe_host);
#endif
#ifdef HAVE_PSI_STATEMENT_INTERFACE
aggregate_thread_statements(thread, safe_account, safe_user, safe_host);
#endif
#ifdef HAVE_PSI_TRANSACTION_INTERFACE
aggregate_thread_transactions(thread, safe_account, safe_user, safe_host);
#endif
#ifdef HAVE_PSI_ERROR_INTERFACE
aggregate_thread_errors(thread, safe_account, safe_user, safe_host);
#endif
#ifdef HAVE_PSI_MEMORY_INTERFACE
aggregate_thread_memory(false, thread, safe_account, safe_user, safe_host);
#endif
aggregate_thread_status(thread, safe_account, safe_user, safe_host);
aggregate_thread_stats(thread, safe_account, safe_user, safe_host);
}
void aggregate_thread_waits(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (thread->read_instr_class_waits_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_WAITS_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME.
*/
aggregate_all_event_names(thread->write_instr_class_waits_stats(),
safe_account->write_instr_class_waits_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_WAITS_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME
in parallel.
*/
aggregate_all_event_names(thread->write_instr_class_waits_stats(),
safe_user->write_instr_class_waits_stats(),
safe_host->write_instr_class_waits_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_WAITS_SUMMARY_BY_USER_BY_EVENT_NAME, directly.
*/
aggregate_all_event_names(thread->write_instr_class_waits_stats(),
safe_user->write_instr_class_waits_stats());
return;
}
if (safe_host != NULL) {
/*
Aggregate EVENTS_WAITS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_WAITS_SUMMARY_BY_HOST_BY_EVENT_NAME, directly.
*/
aggregate_all_event_names(thread->write_instr_class_waits_stats(),
safe_host->write_instr_class_waits_stats());
return;
}
/* Orphan thread, clean the waits stats. */
thread->reset_waits_stats();
}
void aggregate_thread_stages(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (thread->read_instr_class_stages_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate EVENTS_STAGES_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STAGES_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME.
*/
aggregate_all_stages(thread->write_instr_class_stages_stats(),
safe_account->write_instr_class_stages_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate EVENTS_STAGES_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_STAGES_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_STAGES_SUMMARY_BY_HOST_BY_EVENT_NAME
in parallel.
*/
aggregate_all_stages(thread->write_instr_class_stages_stats(),
safe_user->write_instr_class_stages_stats(),
safe_host->write_instr_class_stages_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate EVENTS_STAGES_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_STAGES_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_STAGES_SUMMARY_GLOBAL_BY_EVENT_NAME
in parallel.
*/
aggregate_all_stages(thread->write_instr_class_stages_stats(),
safe_user->write_instr_class_stages_stats(),
global_instr_class_stages_array);
return;
}
if (safe_host != NULL) {
/*
Aggregate EVENTS_STAGES_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STAGES_SUMMARY_BY_HOST_BY_EVENT_NAME, directly.
*/
aggregate_all_stages(thread->write_instr_class_stages_stats(),
safe_host->write_instr_class_stages_stats());
return;
}
/*
Aggregate EVENTS_STAGES_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STAGES_SUMMARY_GLOBAL_BY_EVENT_NAME.
*/
aggregate_all_stages(thread->write_instr_class_stages_stats(),
global_instr_class_stages_array);
}
void aggregate_thread_statements(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (thread->read_instr_class_statements_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate EVENTS_STATEMENTS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STATEMENTS_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME.
*/
aggregate_all_statements(
thread->write_instr_class_statements_stats(),
safe_account->write_instr_class_statements_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate EVENTS_STATEMENT_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_STATEMENT_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_STATEMENT_SUMMARY_BY_HOST_BY_EVENT_NAME
in parallel.
*/
aggregate_all_statements(thread->write_instr_class_statements_stats(),
safe_user->write_instr_class_statements_stats(),
safe_host->write_instr_class_statements_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate EVENTS_STATEMENTS_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_STATEMENTS_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_STATEMENTS_SUMMARY_GLOBAL_BY_EVENT_NAME
in parallel.
*/
aggregate_all_statements(thread->write_instr_class_statements_stats(),
safe_user->write_instr_class_statements_stats(),
global_instr_class_statements_array);
return;
}
if (safe_host != NULL) {
/*
Aggregate EVENTS_STATEMENTS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STATEMENTS_SUMMARY_BY_HOST_BY_EVENT_NAME, directly.
*/
aggregate_all_statements(thread->write_instr_class_statements_stats(),
safe_host->write_instr_class_statements_stats());
return;
}
/*
Aggregate EVENTS_STATEMENTS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_STATEMENTS_SUMMARY_GLOBAL_BY_EVENT_NAME.
*/
aggregate_all_statements(thread->write_instr_class_statements_stats(),
global_instr_class_statements_array);
}
void aggregate_thread_transactions(PFS_thread *thread,
PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (thread->read_instr_class_transactions_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate EVENTS_TRANSACTIONS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_TRANSACTIONS_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME.
*/
aggregate_all_transactions(
thread->write_instr_class_transactions_stats(),
safe_account->write_instr_class_transactions_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate EVENTS_TRANSACTIONS_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_TRANSACTIONS_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_TRANSACTIONS_SUMMARY_BY_HOST_BY_EVENT_NAME
in parallel.
*/
aggregate_all_transactions(
thread->write_instr_class_transactions_stats(),
safe_user->write_instr_class_transactions_stats(),
safe_host->write_instr_class_transactions_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate EVENTS_TRANSACTIONS_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- EVENTS_TRANSACTIONS_SUMMARY_BY_USER_BY_EVENT_NAME
- EVENTS_TRANSACTIONS_SUMMARY_GLOBAL_BY_EVENT_NAME
in parallel.
*/
aggregate_all_transactions(
thread->write_instr_class_transactions_stats(),
safe_user->write_instr_class_transactions_stats(),
&global_transaction_stat);
return;
}
if (safe_host != NULL) {
/*
Aggregate EVENTS_TRANSACTIONS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_TRANSACTIONS_SUMMARY_BY_HOST_BY_EVENT_NAME, directly.
*/
aggregate_all_transactions(
thread->write_instr_class_transactions_stats(),
safe_host->write_instr_class_transactions_stats());
return;
}
/*
Aggregate EVENTS_TRANSACTIONS_SUMMARY_BY_THREAD_BY_EVENT_NAME
to EVENTS_TRANSACTIONS_SUMMARY_GLOBAL_BY_EVENT_NAME.
*/
aggregate_all_transactions(thread->write_instr_class_transactions_stats(),
&global_transaction_stat);
}
void aggregate_thread_errors(PFS_thread *thread, PFS_account *safe_account,
PFS_user *safe_user, PFS_host *safe_host) {
if (thread->read_instr_class_errors_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate EVENTS_ERRORS_SUMMARY_BY_THREAD_BY_ERROR
to EVENTS_ERRORS_SUMMARY_BY_ACCOUNT_BY_ERROR.
*/
aggregate_all_errors(thread->write_instr_class_errors_stats(),
safe_account->write_instr_class_errors_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate EVENTS_ERRORS_SUMMARY_BY_THREAD_BY_ERROR to:
- EVENTS_ERRORS_SUMMARY_BY_USER_BY_ERROR
- EVENTS_ERRORS_SUMMARY_BY_HOST_BY_ERROR
in parallel.
*/
aggregate_all_errors(thread->write_instr_class_errors_stats(),
safe_user->write_instr_class_errors_stats(),
safe_host->write_instr_class_errors_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate EVENTS_ERRORS_SUMMARY_BY_THREAD_BY_ERROR to:
- EVENTS_ERRORS_SUMMARY_BY_USER_BY_ERROR
- EVENTS_ERRORS_SUMMARY_GLOBAL_BY_ERROR
in parallel.
*/
aggregate_all_errors(thread->write_instr_class_errors_stats(),
safe_user->write_instr_class_errors_stats(),
&global_error_stat);
return;
}
if (safe_host != NULL) {
/*
Aggregate EVENTS_ERRORS_SUMMARY_BY_THREAD_BY_ERROR
to EVENTS_ERRORS_SUMMARY_BY_HOST_BY_ERROR, directly.
*/
aggregate_all_errors(thread->write_instr_class_errors_stats(),
safe_host->write_instr_class_errors_stats());
return;
}
/*
Aggregate EVENTS_ERRORS_SUMMARY_BY_THREAD_BY_ERROR
to EVENTS_ERRORS_SUMMARY_GLOBAL_BY_ERROR.
*/
aggregate_all_errors(thread->write_instr_class_errors_stats(),
&global_error_stat);
}
void aggregate_thread_memory(bool alive, PFS_thread *thread,
PFS_account *safe_account, PFS_user *safe_user,
PFS_host *safe_host) {
if (thread->read_instr_class_memory_stats() == NULL) {
return;
}
if (likely(safe_account != NULL)) {
/*
Aggregate MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME
to MEMORY_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME.
*/
aggregate_all_memory(alive, thread->write_instr_class_memory_stats(),
safe_account->write_instr_class_memory_stats());
return;
}
if ((safe_user != NULL) && (safe_host != NULL)) {
/*
Aggregate MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME
- MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME
in parallel.
*/
aggregate_all_memory(alive, thread->write_instr_class_memory_stats(),
safe_user->write_instr_class_memory_stats(),
safe_host->write_instr_class_memory_stats());
return;
}
if (safe_user != NULL) {
/*
Aggregate MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME to:
- MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME
- MEMORY_SUMMARY_GLOBAL_BY_EVENT_NAME
in parallel.
*/
aggregate_all_memory(alive, thread->write_instr_class_memory_stats(),
safe_user->write_instr_class_memory_stats(),
global_instr_class_memory_array);
return;
}
if (safe_host != NULL) {
/*
Aggregate MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME
to MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME, directly.
*/
aggregate_all_memory(alive, thread->write_instr_class_memory_stats(),
safe_host->write_instr_class_memory_stats());
return;
}
/*
Aggregate MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME
to MEMORY_SUMMARY_GLOBAL_BY_EVENT_NAME.
*/
aggregate_all_memory(alive, thread->write_instr_class_memory_stats(),
global_instr_class_memory_array);
}
void clear_thread_account(PFS_thread *thread) {
if (thread->m_account != NULL) {
thread->m_account->release();
thread->m_account = NULL;
}
if (thread->m_user != NULL) {
thread->m_user->release();
thread->m_user = NULL;
}
if (thread->m_host != NULL) {
thread->m_host->release();
thread->m_host = NULL;
}
}
void set_thread_account(PFS_thread *thread) {
DBUG_ASSERT(thread->m_account == NULL);
DBUG_ASSERT(thread->m_user == NULL);
DBUG_ASSERT(thread->m_host == NULL);
thread->m_account = find_or_create_account(
thread, thread->m_username, thread->m_username_length, thread->m_hostname,
thread->m_hostname_length);
if ((thread->m_account == NULL) && (thread->m_username_length > 0))
thread->m_user = find_or_create_user(thread, thread->m_username,
thread->m_username_length);
if ((thread->m_account == NULL) && (thread->m_hostname_length > 0))
thread->m_host = find_or_create_host(thread, thread->m_hostname,
thread->m_hostname_length);
}
static void fct_update_mutex_derived_flags(PFS_mutex *pfs) {
PFS_mutex_class *klass = sanitize_mutex_class(pfs->m_class);
if (likely(klass != NULL)) {
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
} else {
pfs->m_enabled = false;
pfs->m_timed = false;
}
}
void update_mutex_derived_flags() {
global_mutex_container.apply_all(fct_update_mutex_derived_flags);
}
static void fct_update_rwlock_derived_flags(PFS_rwlock *pfs) {
PFS_rwlock_class *klass = sanitize_rwlock_class(pfs->m_class);
if (likely(klass != NULL)) {
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
} else {
pfs->m_enabled = false;
pfs->m_timed = false;
}
}
void update_rwlock_derived_flags() {
global_rwlock_container.apply_all(fct_update_rwlock_derived_flags);
}
static void fct_update_cond_derived_flags(PFS_cond *pfs) {
PFS_cond_class *klass = sanitize_cond_class(pfs->m_class);
if (likely(klass != NULL)) {
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
} else {
pfs->m_enabled = false;
pfs->m_timed = false;
}
}
void update_cond_derived_flags() {
global_cond_container.apply_all(fct_update_cond_derived_flags);
}
static void fct_update_file_derived_flags(PFS_file *pfs) {
PFS_file_class *klass = sanitize_file_class(pfs->m_class);
if (likely(klass != NULL)) {
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
} else {
pfs->m_enabled = false;
pfs->m_timed = false;
}
}
void update_file_derived_flags() {
global_file_container.apply_all(fct_update_file_derived_flags);
}
static void fct_update_table_derived_flags(PFS_table *pfs) {
PFS_table_share *share = sanitize_table_share(pfs->m_share);
if (likely(share != NULL)) {
pfs->m_io_enabled = share->m_enabled && flag_global_instrumentation &&
global_table_io_class.m_enabled;
pfs->m_io_timed = share->m_timed && global_table_io_class.m_timed;
pfs->m_lock_enabled = share->m_enabled && flag_global_instrumentation &&
global_table_lock_class.m_enabled;
pfs->m_lock_timed = share->m_timed && global_table_lock_class.m_timed;
} else {
pfs->m_io_enabled = false;
pfs->m_io_timed = false;
pfs->m_lock_enabled = false;
pfs->m_lock_timed = false;
}
}
void update_table_derived_flags() {
global_table_container.apply_all(fct_update_table_derived_flags);
}
static void fct_update_socket_derived_flags(PFS_socket *pfs) {
PFS_socket_class *klass = sanitize_socket_class(pfs->m_class);
if (likely(klass != NULL)) {
pfs->m_enabled = klass->m_enabled && flag_global_instrumentation;
pfs->m_timed = klass->m_timed;
} else {
pfs->m_enabled = false;
pfs->m_timed = false;
}
}
void update_socket_derived_flags() {
global_socket_container.apply_all(fct_update_socket_derived_flags);
}
static void fct_reset_metadata_source_file_pointers(PFS_metadata_lock *pfs) {
pfs->m_src_file = nullptr;
}
static void fct_update_metadata_derived_flags(PFS_metadata_lock *pfs) {
pfs->m_enabled =
global_metadata_class.m_enabled && flag_global_instrumentation;
pfs->m_timed = global_metadata_class.m_timed;
}
void update_metadata_derived_flags() {
global_mdl_container.apply_all(fct_update_metadata_derived_flags);
}
static void fct_update_thread_derived_flags(PFS_thread *pfs) {
pfs->set_history_derived_flags();
}
void update_thread_derived_flags() {
global_thread_container.apply(fct_update_thread_derived_flags);
}
void update_instruments_derived_flags() {
update_mutex_derived_flags();
update_rwlock_derived_flags();
update_cond_derived_flags();
update_file_derived_flags();
update_table_derived_flags();
update_socket_derived_flags();
update_metadata_derived_flags();
/* nothing for stages, statements and transactions (no instances) */
}
/**
For each thread, clear the source file pointers from all waits, stages,
statements and transaction events.
*/
static void fct_reset_source_file_pointers(PFS_thread *pfs_thread) {
/* EVENTS_WAITS_CURRENT */
PFS_events_waits *wait = pfs_thread->m_events_waits_stack;
PFS_events_waits *wait_last = wait + WAIT_STACK_SIZE;
for (; wait < wait_last; wait++) {
wait->m_source_file = nullptr;
}
/* EVENTS_WAITS_HISTORY */
wait = pfs_thread->m_waits_history;
wait_last = wait + events_waits_history_per_thread;
for (; wait < wait_last; wait++) {
wait->m_source_file = nullptr;
}
/* EVENTS_STAGES_CURRENT */
pfs_thread->m_stage_current.m_source_file = nullptr;
/* EVENTS_STAGES_HISTORY */
PFS_events_stages *stage = pfs_thread->m_stages_history;
PFS_events_stages *stage_last = stage + events_stages_history_per_thread;
for (; stage < stage_last; stage++) {
stage->m_source_file = nullptr;
}
/* EVENTS_STATEMENTS_CURRENT */
PFS_events_statements *stmt = &pfs_thread->m_statement_stack[0];
PFS_events_statements *stmt_last = stmt + statement_stack_max;
for (; stmt < stmt_last; stmt++) {
stmt->m_source_file = nullptr;
}
/* EVENTS_STATEMENTS_HISTORY */
stmt = pfs_thread->m_statements_history;
stmt_last = stmt + events_statements_history_per_thread;
for (; stmt < stmt_last; stmt++) {
stmt->m_source_file = nullptr;
}
/* EVENTS_TRANSACTIONS_CURRENT */
pfs_thread->m_transaction_current.m_source_file = nullptr;
/* EVENTS_TRANSACTIONS_HISTORY */
PFS_events_transactions *trx = pfs_thread->m_transactions_history;
PFS_events_transactions *trx_last =
trx + events_transactions_history_per_thread;
for (; trx < trx_last; trx++) {
trx->m_source_file = nullptr;
}
}
/**
Clear the source file pointers from all waits, stages, statements and
transaction events. This function is called whenever a plugin or component
is unloaded.
The Performance Schema stores the source file and line number for wait,
stage, statement, transaction and metadata lock events. The source file
string pointer is taken from the __FILE__ macro. Source file pointers that
reference files within a shared library become invalid when the shared
library is unloaded, therefore all source file pointers are set to NULL
whenever a plugin or component is unloaded.
*/
void reset_source_file_pointers() {
/* Clear source file pointers from EVENTS_*_CURRENT and HISTORY tables. */
global_thread_container.apply(fct_reset_source_file_pointers);
/* Clear source file pointers from METADATA_LOCKS. */
global_mdl_container.apply_all(fct_reset_metadata_source_file_pointers);
/* EVENTS_WAITS_HISTORY_LONG */
PFS_events_waits *wait = events_waits_history_long_array;
PFS_events_waits *wait_last = wait + events_waits_history_long_size;
for (; wait < wait_last; wait++) {
wait->m_source_file = nullptr;
}
/* EVENTS_STAGES_HISTORY_LONG */
PFS_events_stages *stage = events_stages_history_long_array;
PFS_events_stages *stage_last = stage + events_stages_history_long_size;
for (; stage < stage_last; stage++) {
stage->m_source_file = nullptr;
}
/* EVENTS_STATEMENTS_HISTORY_LONG */
PFS_events_statements *stmt = events_statements_history_long_array;
PFS_events_statements *stmt_last = stmt + events_statements_history_long_size;
for (; stmt < stmt_last; stmt++) {
stmt->m_source_file = nullptr;
}
/* EVENTS_TRANSACTIONS_HISTORY_LONG */
PFS_events_transactions *trx = events_transactions_history_long_array;
PFS_events_transactions *trx_last =
trx + events_transactions_history_long_size;
for (; trx < trx_last; trx++) {
trx->m_source_file = nullptr;
}
}
/** @} */
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