diff options
Diffstat (limited to 'storage/xtradb/trx/trx0rseg.c')
| -rw-r--r-- | storage/xtradb/trx/trx0rseg.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/storage/xtradb/trx/trx0rseg.c b/storage/xtradb/trx/trx0rseg.c index 580762e8716..8d754788e2a 100644 --- a/storage/xtradb/trx/trx0rseg.c +++ b/storage/xtradb/trx/trx0rseg.c @@ -132,6 +132,49 @@ trx_rseg_header_create( } /***********************************************************************//** +Free's an instance of the rollback segment in memory. */ +UNIV_INTERN +void +trx_rseg_mem_free( +/*==============*/ + trx_rseg_t* rseg) /* in, own: instance to free */ +{ + trx_undo_t* undo; + + mutex_free(&rseg->mutex); + + /* There can't be any active transactions. */ + ut_a(UT_LIST_GET_LEN(rseg->update_undo_list) == 0); + ut_a(UT_LIST_GET_LEN(rseg->insert_undo_list) == 0); + + undo = UT_LIST_GET_FIRST(rseg->update_undo_cached); + + while (undo != NULL) { + trx_undo_t* prev_undo = undo; + + undo = UT_LIST_GET_NEXT(undo_list, undo); + UT_LIST_REMOVE(undo_list, rseg->update_undo_cached, prev_undo); + + trx_undo_mem_free(prev_undo); + } + + undo = UT_LIST_GET_FIRST(rseg->insert_undo_cached); + + while (undo != NULL) { + trx_undo_t* prev_undo = undo; + + undo = UT_LIST_GET_NEXT(undo_list, undo); + UT_LIST_REMOVE(undo_list, rseg->insert_undo_cached, prev_undo); + + trx_undo_mem_free(prev_undo); + } + + trx_sys_set_nth_rseg(trx_sys, rseg->id, NULL); + + mem_free(rseg); +} + +/*************************************************************************** Creates and initializes a rollback segment object. The values for the fields are read from the header. The object is inserted to the rseg list of the trx system object and a pointer is inserted in the rseg |