From 3f619478f796eddbba6e39502fe941b285dd97b1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 20:00:34 +0200 Subject: Adding upstream version 1:10.11.6. Signed-off-by: Daniel Baumann --- storage/perfschema/pfs_host.h | 120 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 storage/perfschema/pfs_host.h (limited to 'storage/perfschema/pfs_host.h') diff --git a/storage/perfschema/pfs_host.h b/storage/perfschema/pfs_host.h new file mode 100644 index 00000000..56bcccb9 --- /dev/null +++ b/storage/perfschema/pfs_host.h @@ -0,0 +1,120 @@ +/* Copyright (c) 2010, 2023, Oracle and/or its affiliates. + + 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 Street, Fifth Floor, Boston, MA 02110-1335 USA */ + +#ifndef PFS_HOST_H +#define PFS_HOST_H + +/** + @file storage/perfschema/pfs_host.h + Performance schema host (declarations). +*/ + +#include "pfs_lock.h" +#include "lf.h" +#include "pfs_con_slice.h" + +struct PFS_global_param; +struct PFS_thread; + +/** + @addtogroup Performance_schema_buffers + @{ +*/ + +/** Hash key for a host. */ +struct PFS_host_key +{ + /** + Hash search key. + This has to be a string for LF_HASH, + the format is "<0x00>" + */ + char m_hash_key[HOSTNAME_LENGTH + 1]; + uint m_key_length; +}; + +/** Per host statistics. */ +struct PFS_ALIGNED PFS_host : PFS_connection_slice +{ +public: + inline void init_refcount(void) + { + PFS_atomic::store_32(& m_refcount, 1); + } + + inline int get_refcount(void) + { + return PFS_atomic::load_32(& m_refcount); + } + + inline void inc_refcount(void) + { + PFS_atomic::add_32(& m_refcount, 1); + } + + inline void dec_refcount(void) + { + PFS_atomic::add_32(& m_refcount, -1); + } + + void aggregate(bool alive); + void aggregate_waits(void); + void aggregate_stages(void); + void aggregate_statements(void); + void aggregate_transactions(void); + void aggregate_memory(bool alive); + void aggregate_status(void); + void aggregate_stats(void); + void release(void); + + void carry_memory_stat_delta(PFS_memory_stat_delta *delta, uint index); + + /* Internal lock. */ + pfs_lock m_lock; + PFS_host_key m_key; + const char *m_hostname; + uint m_hostname_length; + + ulonglong m_disconnected_count; + +private: + int m_refcount; +}; + +int init_host(const PFS_global_param *param); +void cleanup_host(void); +int init_host_hash(const PFS_global_param *param); +void cleanup_host_hash(void); + +PFS_host *find_or_create_host(PFS_thread *thread, + const char *hostname, uint hostname_length); + +PFS_host *sanitize_host(PFS_host *unsafe); +void purge_all_host(void); + +/* For show status. */ + +extern LF_HASH host_hash; + +/** @} */ +#endif + -- cgit v1.2.3