1 /* Copyright (c) 2010, 2021, Oracle and/or its affiliates. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License, version 2.0, 5 as published by the Free Software Foundation. 6 7 This program is also distributed with certain software (including 8 but not limited to OpenSSL) that is licensed under separate terms, 9 as designated in a particular file or component or in included license 10 documentation. The authors of MySQL hereby grant you an additional 11 permission to link the program and your derivative works with the 12 separately licensed software that they have included with MySQL. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License, version 2.0, for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ 22 23 #ifndef PFS_ACCOUNT_H 24 #define PFS_ACCOUNT_H 25 26 /** 27 @file storage/perfschema/pfs_account.h 28 Performance schema account (declarations). 29 */ 30 31 #include "pfs_lock.h" 32 #include "lf.h" 33 #include "pfs_con_slice.h" 34 #include "mysql_com.h" /* USERNAME_LENGTH */ 35 36 struct PFS_global_param; 37 struct PFS_user; 38 struct PFS_host; 39 struct PFS_thread; 40 struct PFS_memory_stat_delta; 41 42 /** 43 @addtogroup Performance_schema_buffers 44 @{ 45 */ 46 47 /** Hash key for an account. */ 48 struct PFS_account_key 49 { 50 /** 51 Hash search key. 52 This has to be a string for LF_HASH, 53 the format is "<username><0x00><hostname><0x00>" 54 */ 55 char m_hash_key[USERNAME_LENGTH + 1 + HOSTNAME_LENGTH + 1]; 56 uint m_key_length; 57 }; 58 59 /** Per account statistics. */ 60 struct PFS_ALIGNED PFS_account : PFS_connection_slice 61 { 62 public: init_refcountPFS_account63 inline void init_refcount(void) 64 { 65 PFS_atomic::store_32(& m_refcount, 1); 66 } 67 get_refcountPFS_account68 inline int get_refcount(void) 69 { 70 return PFS_atomic::load_32(& m_refcount); 71 } 72 inc_refcountPFS_account73 inline void inc_refcount(void) 74 { 75 PFS_atomic::add_32(& m_refcount, 1); 76 } 77 dec_refcountPFS_account78 inline void dec_refcount(void) 79 { 80 PFS_atomic::add_32(& m_refcount, -1); 81 } 82 83 void aggregate(bool alive, PFS_user *safe_user, PFS_host *safe_host); 84 void aggregate_waits(PFS_user *safe_user, PFS_host *safe_host); 85 void aggregate_stages(PFS_user *safe_user, PFS_host *safe_host); 86 void aggregate_statements(PFS_user *safe_user, PFS_host *safe_host); 87 void aggregate_transactions(PFS_user *safe_user, PFS_host *safe_host); 88 void aggregate_memory(bool alive, PFS_user *safe_user, PFS_host *safe_host); 89 void aggregate_status(PFS_user *safe_user, PFS_host *safe_host); 90 void aggregate_stats(PFS_user *safe_user, PFS_host *safe_host); 91 void release(void); 92 93 void carry_memory_stat_delta(PFS_memory_stat_delta *delta, uint index); 94 95 /** Internal lock. */ 96 pfs_lock m_lock; 97 PFS_account_key m_key; 98 /** True if this account is enabled, per rules in table SETUP_ACTORS. */ 99 bool m_enabled; 100 /** True if this account has history enabled, per rules in table SETUP_ACTORS. */ 101 bool m_history; 102 const char *m_username; 103 uint m_username_length; 104 const char *m_hostname; 105 uint m_hostname_length; 106 PFS_user *m_user; 107 PFS_host *m_host; 108 109 ulonglong m_disconnected_count; 110 111 private: 112 int m_refcount; 113 }; 114 115 int init_account(const PFS_global_param *param); 116 void cleanup_account(void); 117 int init_account_hash(const PFS_global_param *param); 118 void cleanup_account_hash(void); 119 120 PFS_account * 121 find_or_create_account(PFS_thread *thread, 122 const char *username, uint username_length, 123 const char *hostname, uint hostname_length); 124 125 PFS_account *sanitize_account(PFS_account *unsafe); 126 void purge_all_account(void); 127 128 void update_accounts_derived_flags(PFS_thread *thread); 129 130 /* For show status. */ 131 132 extern LF_HASH account_hash; 133 134 /** @} */ 135 #endif 136 137