diff options
Diffstat (limited to 'innobase/trx/trx0roll.c')
| -rw-r--r-- | innobase/trx/trx0roll.c | 79 |
1 files changed, 53 insertions, 26 deletions
diff --git a/innobase/trx/trx0roll.c b/innobase/trx/trx0roll.c index 8b8a079bb7f..e65755a0f73 100644 --- a/innobase/trx/trx0roll.c +++ b/innobase/trx/trx0roll.c @@ -20,6 +20,7 @@ Created 3/26/1996 Heikki Tuuri #include "trx0rec.h" #include "que0que.h" #include "usr0sess.h" +#include "srv0que.h" #include "srv0start.h" #include "row0undo.h" #include "row0mysql.h" @@ -931,15 +932,21 @@ trx_undo_rec_release( /************************************************************************* Starts a rollback operation. */ -que_thr_t* +void trx_rollback( /*=========*/ - /* out: next query thread to run */ trx_t* trx, /* in: transaction */ - trx_sig_t* sig) /* in: signal starting the rollback */ + trx_sig_t* sig, /* in: signal starting the rollback */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if the passed value is + NULL, the parameter is ignored */ { que_t* roll_graph; que_thr_t* thr; +/* que_thr_t* thr2; */ #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&kernel_mutex)); @@ -981,7 +988,18 @@ trx_rollback( thr = que_fork_start_command(roll_graph); ut_ad(thr); - return(thr); + +/* thr2 = que_fork_start_command(roll_graph); + + ut_ad(thr2); */ + + if (next_thr && (*next_thr == NULL)) { + *next_thr = thr; +/* srv_que_task_enqueue_low(thr2); */ + } else { + srv_que_task_enqueue_low(thr); +/* srv_que_task_enqueue_low(thr2); */ + } } /******************************************************************** @@ -1053,14 +1071,17 @@ trx_finish_error_processing( /************************************************************************* Finishes a partial rollback operation. */ static -que_thr_t* +void trx_finish_partial_rollback_off_kernel( /*===================================*/ - /* out: next query thread to run */ - trx_t* trx) /* in: transaction */ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is a pointer + to a NULL pointer, then the calling function + can start running a new query thread; if this + parameter is NULL, it is ignored */ { trx_sig_t* sig; - que_thr_t* next_thr; #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&kernel_mutex)); @@ -1071,26 +1092,29 @@ trx_finish_partial_rollback_off_kernel( /* Remove the signal from the signal queue and send reply message to it */ - next_thr = trx_sig_reply(sig); + trx_sig_reply(sig, next_thr); trx_sig_remove(trx, sig); trx->que_state = TRX_QUE_RUNNING; - return(next_thr); } /******************************************************************** Finishes a transaction rollback. */ -que_thr_t* +void trx_finish_rollback_off_kernel( /*===========================*/ - /* out: next query thread to run */ que_t* graph, /* in: undo graph which can now be freed */ - trx_t* trx) /* in: transaction */ + trx_t* trx, /* in: transaction */ + que_thr_t** next_thr)/* in/out: next query thread to run; + if the value which is passed in is + a pointer to a NULL pointer, then the + calling function can start running + a new query thread; if this parameter is + NULL, it is ignored */ { trx_sig_t* sig; trx_sig_t* next_sig; - que_thr_t* next_thr; #ifdef UNIV_SYNC_DEBUG ut_ad(mutex_own(&kernel_mutex)); @@ -1105,21 +1129,21 @@ trx_finish_rollback_off_kernel( if (sig->type == TRX_SIG_ROLLBACK_TO_SAVEPT) { - return(trx_finish_partial_rollback_off_kernel(trx)); + trx_finish_partial_rollback_off_kernel(trx, next_thr); + + return; } else if (sig->type == TRX_SIG_ERROR_OCCURRED) { trx_finish_error_processing(trx); - return(NULL); + return; } -#ifdef UNIV_DEBUG if (lock_print_waits) { fprintf(stderr, "Trx %lu rollback finished\n", (ulong) ut_dulint_get_low(trx->id)); } -#endif /* UNIV_DEBUG */ trx_commit_off_kernel(trx); @@ -1127,23 +1151,19 @@ trx_finish_rollback_off_kernel( send reply messages to them */ trx->que_state = TRX_QUE_RUNNING; - - next_thr = NULL; + while (sig != NULL) { next_sig = UT_LIST_GET_NEXT(signals, sig); if (sig->type == TRX_SIG_TOTAL_ROLLBACK) { - ut_a(next_thr == NULL); - next_thr = trx_sig_reply(sig); + trx_sig_reply(sig, next_thr); trx_sig_remove(trx, sig); } sig = next_sig; } - - return(next_thr); } /************************************************************************* @@ -1176,6 +1196,7 @@ trx_rollback_step( que_thr_t* thr) /* in: query thread */ { roll_node_t* node; + ibool success; ulint sig_no; trx_savept_t* savept; @@ -1202,13 +1223,19 @@ trx_rollback_step( /* Send a rollback signal to the transaction */ - trx_sig_send(thr_get_trx(thr), sig_no, TRX_SIG_SELF, - thr, savept); + success = trx_sig_send(thr_get_trx(thr), + sig_no, TRX_SIG_SELF, + thr, savept, NULL); thr->state = QUE_THR_SIG_REPLY_WAIT; mutex_exit(&kernel_mutex); + if (!success) { + /* Error in delivering the rollback signal */ + que_thr_handle_error(thr, DB_ERROR, NULL, 0); + } + return(NULL); } |