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| version 1.27, 2001/10/31 15:00:05 | version 1.31, 2001/11/05 16:07:16 |
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| Line 2 | Line 2 |
| Parser: sql driver connection implementation. | Parser: sql driver connection implementation. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru) |
| $Id$ | $Id$ |
| Line 18 | Line 18 |
| #include "pa_threads.h" | #include "pa_threads.h" |
| #include "pa_stack.h" | #include "pa_stack.h" |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_vtable.h" | |
| // defines | // defines |
| Line 26 | Line 27 |
| /// @test increase | /// @test increase |
| const int DB_CHECKPOINT_MINUTES=1; | const int DB_CHECKPOINT_MINUTES=1; |
| const int EXPIRE_UNUSED_TABLE_SECONDS=60; | const int EXPIRE_UNUSED_TABLE_SECONDS=3; //60; |
| const int CHECK_EXPIRED_TABLES_SECONDS=EXPIRE_UNUSED_TABLE_SECONDS*2; | const int CHECK_EXPIRED_TABLES_SECONDS=EXPIRE_UNUSED_TABLE_SECONDS*2; |
| // callbacks | // callbacks |
| Line 46 static void db_errcall(const char *, cha | Line 47 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_Table& table=*static_cast<DB_Table *>(value); | if(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_Table(); value=0; | table->~DB_Table(); value=0; |
| } | |
| } | } |
| } | } |
| Line 58 static void expire_table(const Hash::Key | Line 60 static void expire_table(const Hash::Key |
| DB_Connection::DB_Connection(Pool& apool, const String& adb_home) : Pooled(apool), | DB_Connection::DB_Connection(Pool& apool, const String& adb_home) : Pooled(apool), |
| time_used(0), | time_used(0), |
| fdb_home(adb_home), | fdb_home(adb_home), used(0), |
| table_cache(apool), | table_cache(apool), |
| prev_expiration_pass_time(0) { | prev_expiration_pass_time(0) { |
| //_asm int 3; | //_asm int 3; |
| Line 80 DB_Connection::DB_Connection(Pool& apool | Line 82 DB_Connection::DB_Connection(Pool& apool |
| }; | }; |
| u_int32_t flags= | u_int32_t flags= |
| parser_multithreaded?DB_THREAD:0 | (parser_multithreaded?DB_THREAD:0) |
| | 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; |
| Line 103 DB_Connection::DB_Connection(Pool& apool | Line 105 DB_Connection::DB_Connection(Pool& apool |
| &dbenv, | &dbenv, |
| flags | flags |
| )); | )); |
| // after some hang noticed this to be null | |
| if(!dbenv.tx_info) | |
| throw Exception(0, 0, | |
| &fdb_home, | |
| "transaction system failed to initialize"); | |
| } | } |
| DB_Connection::~DB_Connection() { | DB_Connection::~DB_Connection() { |
| // close tables | // close tables |
| table_cache.for_each(expire_table, | table_cache.for_each(expire_table, |
| reinterpret_cast<void *>(0/* =in the past = expire[close] all*/)); | reinterpret_cast<void *>(time(0)/* =now= expire[close] all*/)); |
| // destroy connection data | // destroy connection data |
| check("db_appexit", &fdb_home, db_appexit(&dbenv)); | check("db_appexit", &fdb_home, db_appexit(&dbenv)); |
| Line 137 void DB_Connection::check(const char *op | Line 145 void DB_Connection::check(const char *op |
| DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *source) { | DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *source) { |
| // checkpoint | // checkpoint |
| { | { |
| int error=txn_checkpoint(dbenv.tx_info, 0/*kbyte*/, DB_CHECKPOINT_MINUTES/*min*/); | int error=txn_checkpoint(dbenv.tx_info, 0/*kbyte*/, DB_CHECKPOINT_MINUTES/*min*/); |
| /* | /* |
| DB_INCOMPLETE if there were pages that needed to be written | DB_INCOMPLETE if there were pages that needed to be written |
| Line 199 void DB_Connection::maybe_expire_table_c | Line 207 void DB_Connection::maybe_expire_table_c |
| } | } |
| } | } |
| static void add_table_to_status_table(const Hash::Key& key, Hash::Val *& value, void *info) { | |
| if(DB_Table *db_table=static_cast<DB_Table *>(value)) { | |
| Table& status_table=*static_cast<Table *>(info); | |
| Pool& pool=status_table.pool(); | |
| Array& row=*new(pool) Array(pool); | |
| // name | |
| row+=&db_table->file_name(); | |
| // time | |
| time_t time_stamp=db_table->get_time_used(); | |
| const char *unsafe_time_cstr=ctime(&time_stamp); | |
| int time_buf_size=strlen(unsafe_time_cstr); | |
| char *safe_time_buf=(char *)pool.malloc(time_buf_size); | |
| memcpy(safe_time_buf, unsafe_time_cstr, time_buf_size); | |
| row+=new(pool) String(pool, safe_time_buf, time_buf_size); | |
| // users | |
| char *users_buf=(char *)pool.malloc(MAX_NUMBER); | |
| row+=new(pool) String(pool, | |
| users_buf, snprintf(users_buf, MAX_NUMBER, "%d", db_table->get_users_count())); | |
| status_table+=&row; | |
| } | |
| } | |
| Value& DB_Connection::get_status(Pool& pool, const String *source) { | |
| Array& columns=*new(pool) Array(pool); | |
| columns+=new(pool) String(pool, "name"); | |
| columns+=new(pool) String(pool, "time"); | |
| columns+=new(pool) String(pool, "users"); | |
| Table& table=*new(pool) Table(pool, 0, &columns, table_cache.size()); | |
| table_cache.for_each(add_table_to_status_table, &table); | |
| return *new(pool) VTable(pool, &table); | |
| } | |
| #endif | #endif |