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55db59f16d
PFS_atomic class contains wrappers around my_atomic_* operations, which
are macros to GNU atomic operations (__atomic_*). Due to different
implementations of compilers, clang may encounter errors when compiling
on x86_32 architecture.
The following functions are replaced with C++ std::atomic type in
performance schema code base:
- PFS_atomic::store_*()
-> my_atomic_store*
-> __atomic_store_n()
=> std::atomic<T>::store()
- PFS_atomic::load_*()
-> my_atomic_load*
-> __atomic_load_n()
=> std::atomic<T>::load()
- PFS_atomic::add_*()
-> my_atomic_add*
-> __atomic_fetch_add()
=> std::atomic<T>::fetch_add()
- PFS_atomic::cas_*()
-> my_atomic_cas*
-> __atomic_compare_exchange_n()
=> std::atomic<T>::compare_exchange_strong()
and PFS_atomic class could be dropped completely.
Note that in the wrapper memory order passed to original GNU atomic
extensions are hard-coded as `__ATOMIC_SEQ_CST`, which is equivalent to
`std::memory_order_seq_cst` in C++, and is the default parameter for
std::atomic_* functions.
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer Amazon Web
Services.
97 lines
3 KiB
C++
97 lines
3 KiB
C++
/* Copyright (c) 2013, 2023, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
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/**
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@file storage/perfschema/pfs_memory.cc
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Memory statistics aggregation (implementation).
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*/
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#include "my_global.h"
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#include "my_sys.h"
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#include "pfs_global.h"
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#include "pfs_instr_class.h"
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#include "pfs_instr.h"
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#include "pfs_account.h"
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#include "pfs_host.h"
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#include "pfs_user.h"
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#include "pfs_buffer_container.h"
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#include "m_string.h"
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static void fct_reset_memory_by_thread(PFS_thread *pfs)
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{
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PFS_account *account= sanitize_account(pfs->m_account);
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PFS_user *user= sanitize_user(pfs->m_user);
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PFS_host *host= sanitize_host(pfs->m_host);
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aggregate_thread_memory(true, pfs, account, user, host);
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}
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/** Reset table MEMORY_SUMMARY_BY_THREAD_BY_EVENT_NAME data. */
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void reset_memory_by_thread()
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{
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global_thread_container.apply(fct_reset_memory_by_thread);
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}
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static void fct_reset_memory_by_account(PFS_account *pfs)
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{
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PFS_user *user= sanitize_user(pfs->m_user);
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PFS_host *host= sanitize_host(pfs->m_host);
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pfs->aggregate_memory(true, user, host);
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}
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/** Reset table MEMORY_SUMMARY_BY_ACCOUNT_BY_EVENT_NAME data. */
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void reset_memory_by_account()
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{
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global_account_container.apply(fct_reset_memory_by_account);
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}
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static void fct_reset_memory_by_user(PFS_user *pfs)
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{
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pfs->aggregate_memory(true);
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}
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/** Reset table MEMORY_SUMMARY_BY_USER_BY_EVENT_NAME data. */
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void reset_memory_by_user()
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{
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global_user_container.apply(fct_reset_memory_by_user);
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}
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static void fct_reset_memory_by_host(PFS_host *pfs)
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{
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pfs->aggregate_memory(true);
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}
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/** Reset table MEMORY_SUMMARY_BY_HOST_BY_EVENT_NAME data. */
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void reset_memory_by_host()
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{
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global_host_container.apply(fct_reset_memory_by_host);
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}
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/** Reset table MEMORY_GLOBAL_BY_EVENT_NAME data. */
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void reset_memory_global()
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{
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PFS_memory_stat *stat= global_instr_class_memory_array;
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PFS_memory_stat *stat_last= global_instr_class_memory_array + memory_class_max;
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for ( ; stat < stat_last; stat++)
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stat->rebase();
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}
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