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| version 1.14, 2001/10/26 15:26:37 | version 1.22, 2001/10/28 14:24:26 |
|---|---|
| Line 5 | Line 5 |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) |
| $Id$ | $Id$ |
| developed with LIBDB 2.7.4 | |
| */ | */ |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| #ifdef HAVE_LIBDB | #ifdef DB2 |
| #include "pa_db_connection.h" | #include "pa_db_connection.h" |
| #include "pa_db_table.h" | #include "pa_db_table.h" |
| Line 25 | Line 27 |
| // consts | // consts |
| /// @test increase | |
| const int DB_CHECKPOINT_MINUTES=1; | |
| const int EXPIRE_UNUSED_TABLE_SECONDS=60; | const int EXPIRE_UNUSED_TABLE_SECONDS=60; |
| const int CHECK_EXPIRED_TABLES_SECONDS=EXPIRE_UNUSED_TABLE_SECONDS*2; | const int CHECK_EXPIRED_TABLES_SECONDS=EXPIRE_UNUSED_TABLE_SECONDS*2; |
| Line 45 static void db_errcall(const char *, cha | Line 50 static void db_errcall(const char *, cha |
| } | } |
| static void expire_table(const Hash::Key& key, Hash::Val *& value, void *info) { | static void expire_table(const Hash::Key& key, Hash::Val *& value, void *info) { |
| DB_Connection& table=*static_cast<DB_Connection *>(value); | DB_Table& table=*static_cast<DB_Table *>(value); |
| time_t older_dies=reinterpret_cast<time_t>(info); | time_t older_dies=reinterpret_cast<time_t>(info); |
| if(table.expired(older_dies)) { | if(table.expired(older_dies)) { |
| table.~DB_Connection(); value=0; | table.~DB_Table(); value=0; |
| } | } |
| } | } |
| Line 83 DB_Connection::DB_Connection(Pool& apool | Line 88 DB_Connection::DB_Connection(Pool& apool |
| | DB_CREATE | | DB_CREATE |
| | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN; | | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN; |
| try { | // trying to open with SOFT RECOVER option set |
| // 1: trying to open with SOFT RECOVER option set | memset(&dbenv, 0, sizeof(dbenv)); |
| memset(&dbenv, 0, sizeof(dbenv)); | |
| check("db_appinit soft recover", &fdb_home, db_appinit( | |
| db_home_cstr, | |
| db_config, | |
| &dbenv, | |
| flags | DB_RECOVER | |
| )); | |
| } catch(const Exception& e) { | |
| if( | |
| strncmp( | |
| e.comment(), | |
| DB_EXCEPTION_NO_LOG_MESSAGE1, | |
| strlen(DB_EXCEPTION_NO_LOG_MESSAGE1))==0 || | |
| strncmp( | |
| e.comment(), | |
| DB_EXCEPTION_NO_LOG_MESSAGE2, | |
| strlen(DB_EXCEPTION_NO_LOG_MESSAGE2))==0) { | |
| // no log = no SOFT RECOVER | |
| // 2.1: trying to open with NO RECOVER option set | |
| memset(&dbenv, 0, sizeof(dbenv)); | |
| check("db_appinit no recover", &fdb_home, db_appinit( | |
| db_home_cstr, | |
| db_config, | |
| &dbenv, | |
| flags | |
| )); | |
| } else { | |
| // some serious error | |
| // 2.2: trying to open with FATAL RECOVER option set | |
| memset(&dbenv, 0, sizeof(dbenv)); | |
| check("db_appinit fatal recover", &fdb_home, db_appinit( | |
| db_home_cstr, | |
| db_config, | |
| &dbenv, | |
| flags | DB_RECOVER_FATAL | |
| )); | |
| } | |
| } | |
| // error handlers | // error handlers |
| #if DB_VERSION_MINOR >= 7 | |
| dbenv.db_paniccall=db_paniccall; | dbenv.db_paniccall=db_paniccall; |
| #endif | |
| dbenv.db_errcall=db_errcall; | dbenv.db_errcall=db_errcall; |
| // init | |
| check("db_appinit", &fdb_home, db_appinit( | |
| db_home_cstr, | |
| db_config, | |
| &dbenv, | |
| flags | |
| )); | |
| } | } |
| DB_Connection::~DB_Connection() { | DB_Connection::~DB_Connection() { |
| Line 146 void DB_Connection::check(const char *op | Line 123 void DB_Connection::check(const char *op |
| break; | break; |
| default: | default: |
| throw Exception(0, 0, | if(error<0) |
| source, | throw Exception(0, 0, |
| "db %s error: %s (%d)", | source, |
| operation, strerror(error), error); | "db %s error: %d", |
| operation, error); | |
| else | |
| throw Exception(0, 0, | |
| source, | |
| "db %s error: %s (%d)", | |
| operation, strerror(error), error); | |
| } | } |
| } | } |
| DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *origin) { | DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *source) { |
| if(!used) | // checkpoint |
| throw(0, 0, | { |
| origin, | int error=txn_checkpoint(dbenv.tx_info, 0/*kbyte*/, DB_CHECKPOINT_MINUTES/*min*/); |
| "note to parser3 programmer: your forgot about DB_Connection_usage"); | /* |
| DB_INCOMPLETE if there were pages that needed to be written | |
| but that memp_sync was unable to write immediately. | |
| In this case, the txn_checkpoint call should be retried. | |
| we'll just ignore that | |
| */ | |
| if(error!=DB_INCOMPLETE) | |
| check("checkpoint", source, error); | |
| } | |
| // first trying to get cached table | // first trying to get cached table |
| DB_Table *result=get_table_from_cache(request_file_name); | DB_Table *result=get_table_from_cache(request_file_name); |
| Line 180 DB_Table_ptr DB_Connection::get_table_pt | Line 172 DB_Table_ptr DB_Connection::get_table_pt |
| // return auto-it | // return auto-it |
| return DB_Table_ptr(result); | return DB_Table_ptr(result); |
| } | } |
| void DB_Connection::clear_dbfile(const String& file_name) { | |
| // open&clear | |
| DB *db; | |
| DB_INFO dbinfo; | |
| memset(&dbinfo, 0, sizeof(dbinfo)); | |
| check("open(clear)", &file_name, db_open( | |
| file_name.cstr(String::UL_FILE_SPEC), | |
| PA_DB_ACCESS_METHOD, | |
| DB_CREATE | DB_TRUNCATE/* used in single thread, no need for |DB_THREAD*/, | |
| 0666, | |
| &dbenv, &dbinfo, &db)); | |
| check("close", &file_name, db->close(db, 0/*flags*/)); db=0; | |
| } | |
| // table cache | // table cache |
| /// @todo get rid of memory spending Stack [zeros deep inside got accumulated] | /// @todo get rid of memory spending Stack [zeros deep inside got accumulated] |
| DB_Table *DB_Connection::get_table_from_cache(const String& file_name) { | DB_Table *DB_Connection::get_table_from_cache(const String& file_name) { |
| SYNCHRONIZED; | SYNCHRONIZED; |
| maybe_expire_table_cache(); | |
| return static_cast<DB_Table *>(table_cache.get(file_name)); | return static_cast<DB_Table *>(table_cache.get(file_name)); |
| } | } |