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113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
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#ifndef PFS_HOST_H
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#define PFS_HOST_H
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/**
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@file storage/perfschema/pfs_host.h
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Performance schema host (declarations).
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*/
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#include "pfs_lock.h"
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#include "lf.h"
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#include "pfs_con_slice.h"
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struct PFS_global_param;
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struct PFS_thread;
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/**
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@addtogroup Performance_schema_buffers
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@{
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*/
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struct PFS_host_key
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{
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/**
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Hash search key.
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This has to be a string for LF_HASH,
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the format is "<hostname><0x00>"
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*/
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char m_hash_key[HOSTNAME_LENGTH + 1];
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uint m_key_length;
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};
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struct PFS_ALIGNED PFS_host : PFS_connection_slice
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{
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public:
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inline void init_refcount(void)
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{
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PFS_atomic::store_32(& m_refcount, 1);
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}
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inline int get_refcount(void)
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{
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return PFS_atomic::load_32(& m_refcount);
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}
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inline void inc_refcount(void)
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{
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PFS_atomic::add_32(& m_refcount, 1);
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}
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inline void dec_refcount(void)
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{
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PFS_atomic::add_32(& m_refcount, -1);
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}
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void aggregate(void);
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void aggregate_waits(void);
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void aggregate_stages(void);
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void aggregate_statements(void);
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void aggregate_stats(void);
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void release(void);
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/* Internal lock. */
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pfs_lock m_lock;
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PFS_host_key m_key;
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const char *m_hostname;
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uint m_hostname_length;
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ulonglong m_disconnected_count;
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private:
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int m_refcount;
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};
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int init_host(const PFS_global_param *param);
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void cleanup_host(void);
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int init_host_hash(void);
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void cleanup_host_hash(void);
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PFS_host *find_or_create_host(PFS_thread *thread,
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const char *hostname, uint hostname_length);
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PFS_host *sanitize_host(PFS_host *unsafe);
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void purge_all_host(void);
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/* For iterators and show status. */
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extern ulong host_max;
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extern ulong host_lost;
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/* Exposing the data directly, for iterators. */
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extern PFS_host *host_array;
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extern LF_HASH host_hash;
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/** @} */
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#endif
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