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query_classifier.cc: added detection for CREATE TEMPORARY TABLE and setting a new query type QUERY_TYPE_CREATE_TMP_TABLE for it.

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query_classifier.h: added QUERY_TYPE_CREATE_TMP_TABLE and QUERY_TYPE_READ_TMP_TABLE for use of temporary table support.
hashtable.c:Added variant of hashtable which is 'flat', that is, stored to existing memory instead of allocating memory as a part of the call. Existing function declarations don't change but added hashtable_alloc_flat for the purpose. Both hashtable_alloc and hashtable_alloc_flat now call the real allocation function, hashtable_alloc_real. hashtable_free only frees memory which is allocated in hashtable_alloc_real.
hashtable.h: added a flag to HASHTABLE struct to indicate whether hashtable owns its memory or not.
readwritesplit.h: Added RSES_PROP_TYPE_TMPTABLES property type to be used for keeping the hashtable for tablenames.
readwritesplit.c: Added comments about temporary table support implementation.
This commit is contained in:
VilhoRaatikka
2014-08-29 10:08:48 +03:00
parent 493feb49ba
commit 531d8d7b47
6 changed files with 175 additions and 8 deletions
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4
server/modules/include/readwritesplit.h
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@ -78,7 +78,8 @@ typedef enum rses_property_type_t {
RSES_PROP_TYPE_UNDEFINED=-1,
RSES_PROP_TYPE_SESCMD=0,
RSES_PROP_TYPE_FIRST = RSES_PROP_TYPE_SESCMD,
RSES_PROP_TYPE_LAST=RSES_PROP_TYPE_SESCMD,
RSES_PROP_TYPE_TMPTABLES,
RSES_PROP_TYPE_LAST=RSES_PROP_TYPE_TMPTABLES,
RSES_PROP_TYPE_COUNT=RSES_PROP_TYPE_LAST+1
} rses_property_type_t;
@ -143,6 +144,7 @@ struct rses_property_st {
rses_property_type_t rses_prop_type;
union rses_prop_data {
mysql_sescmd_t sescmd;
HASHTABLE tmp_table_hash;
void* placeholder; /*< to be removed due new type */
} rses_prop_data;
rses_property_t* rses_prop_next; /*< next property of same type */