diff options
Diffstat (limited to 'innobase/srv/srv0srv.c')
| -rw-r--r-- | innobase/srv/srv0srv.c | 97 |
1 files changed, 85 insertions, 12 deletions
diff --git a/innobase/srv/srv0srv.c b/innobase/srv/srv0srv.c index cbc22b9b28a..c3d3ed53058 100644 --- a/innobase/srv/srv0srv.c +++ b/innobase/srv/srv0srv.c @@ -20,7 +20,7 @@ Windows 2000 will have something called thread pooling Another possibility could be to use some very fast user space thread library. This might confuse NT though. -(c) 1995 InnoDB Oy +(c) 1995 Innobase Oy Created 10/8/1995 Heikki Tuuri *******************************************************/ @@ -49,6 +49,7 @@ Created 10/8/1995 Heikki Tuuri #include "btr0sea.h" #include "dict0load.h" #include "srv0start.h" +#include "row0mysql.h" /* Buffer which can be used in printing fatal error messages */ char srv_fatal_errbuf[5000]; @@ -91,8 +92,43 @@ ibool srv_log_archive_on = TRUE; ulint srv_log_buffer_size = ULINT_MAX; /* size in database pages */ ibool srv_flush_log_at_trx_commit = TRUE; -byte srv_latin1_ordering[256]; /* The sort order table of the latin1 - character set */ +byte srv_latin1_ordering[256] /* The sort order table of the latin1 + character set. The following table is + the MySQL order as of Feb 10th, 2002 */ += { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 +, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F +, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 +, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F +, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27 +, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F +, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 +, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F +, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 +, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F +, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57 +, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F +, 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 +, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F +, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57 +, 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F +, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87 +, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F +, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97 +, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F +, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7 +, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF +, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7 +, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF +, 0x41, 0x41, 0x41, 0x41, 0x5C, 0x5B, 0x5C, 0x43 +, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49 +, 0x44, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0x5D, 0xD7 +, 0xD8, 0x55, 0x55, 0x55, 0x59, 0x59, 0xDE, 0xDF +, 0x41, 0x41, 0x41, 0x41, 0x5C, 0x5B, 0x5C, 0x43 +, 0x45, 0x45, 0x45, 0x45, 0x49, 0x49, 0x49, 0x49 +, 0x44, 0x4E, 0x4F, 0x4F, 0x4F, 0x4F, 0x5D, 0xF7 +, 0xD8, 0x55, 0x55, 0x55, 0x59, 0x59, 0xDE, 0xFF +}; ibool srv_use_native_aio = FALSE; @@ -1920,17 +1956,12 @@ srv_boot(void) srv_init(); - /* Reserve the first slot for the current thread, i.e., the master - thread */ - - srv_table_reserve_slot(SRV_MASTER); - return(DB_SUCCESS); } /************************************************************************* Reserves a slot in the thread table for the current MySQL OS thread. -NOTE! The server mutex has to be reserved by the caller! */ +NOTE! The kernel mutex has to be reserved by the caller! */ static srv_slot_t* srv_table_reserve_slot_for_mysql(void) @@ -1940,6 +1971,8 @@ srv_table_reserve_slot_for_mysql(void) srv_slot_t* slot; ulint i; + ut_ad(mutex_own(&kernel_mutex)); + i = 0; slot = srv_mysql_table + i; @@ -2361,6 +2394,22 @@ srv_active_wake_master_thread(void) } } +/*********************************************************************** +Wakes up the master thread if it is suspended or being suspended. */ + +void +srv_wake_master_thread(void) +/*========================*/ +{ + srv_activity_count++; + + mutex_enter(&kernel_mutex); + + srv_release_threads(SRV_MASTER, 1); + + mutex_exit(&kernel_mutex); +} + /************************************************************************* The master thread controlling the server. */ @@ -2383,6 +2432,7 @@ srv_master_thread( ulint n_bytes_merged; ulint n_pages_flushed; ulint n_bytes_archived; + ulint n_tables_to_drop; ulint n_ios; ulint n_ios_old; ulint n_ios_very_old; @@ -2424,7 +2474,11 @@ loop: can drop tables lazily after there no longer are SELECT queries to them. */ -/* row_drop_tables_for_mysql_in_background(); */ + srv_main_thread_op_info = "doing background drop tables"; + + row_drop_tables_for_mysql_in_background(); + + srv_main_thread_op_info = ""; if (srv_force_recovery >= SRV_FORCE_NO_BACKGROUND) { @@ -2475,6 +2529,11 @@ loop: printf("Master thread wakes up!\n"); } +#ifdef MEM_PERIODIC_CHECK + /* Check magic numbers of every allocated mem block once in 10 + seconds */ + mem_validate_all_blocks(); +#endif /* If there were less than 200 i/os during the 10 second period, we assume that there is free disk i/o capacity available, and it makes sense to do a buffer pool flush. */ @@ -2531,6 +2590,12 @@ background_loop: /* In this loop we run background operations when the server is quiet and we also come here about once in 10 seconds */ + srv_main_thread_op_info = "doing background drop tables"; + + n_tables_to_drop = row_drop_tables_for_mysql_in_background(); + + srv_main_thread_op_info = ""; + srv_main_thread_op_info = "flushing buffer pool pages"; /* Flush a few oldest pages to make the checkpoint younger */ @@ -2616,11 +2681,13 @@ background_loop: log_archive_do(FALSE, &n_bytes_archived); if (srv_fast_shutdown && srv_shutdown_state > 0) { - if (n_pages_flushed + n_bytes_archived != 0) { + if (n_tables_to_drop + n_pages_flushed + + n_bytes_archived != 0) { goto background_loop; } - } else if (n_pages_purged + n_bytes_merged + n_pages_flushed + } else if (n_tables_to_drop + + n_pages_purged + n_bytes_merged + n_pages_flushed + n_bytes_archived != 0) { goto background_loop; } @@ -2639,6 +2706,12 @@ suspend_thread: mutex_enter(&kernel_mutex); + if (row_get_background_drop_list_len_low() > 0) { + mutex_exit(&kernel_mutex); + + goto loop; + } + event = srv_suspend_thread(); mutex_exit(&kernel_mutex); |