diff options
Diffstat (limited to 'src/backend/commands/extension.c')
| -rw-r--r-- | src/backend/commands/extension.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/backend/commands/extension.c b/src/backend/commands/extension.c index 59ca5cd5a9f..f7202cc9e7d 100644 --- a/src/backend/commands/extension.c +++ b/src/backend/commands/extension.c @@ -717,9 +717,21 @@ execute_sql_string(const char *sql) foreach(lc1, raw_parsetree_list) { RawStmt *parsetree = lfirst_node(RawStmt, lc1); + MemoryContext per_parsetree_context, + oldcontext; List *stmt_list; ListCell *lc2; + /* + * We do the work for each parsetree in a short-lived context, to + * limit the memory used when there are many commands in the string. + */ + per_parsetree_context = + AllocSetContextCreate(CurrentMemoryContext, + "execute_sql_string per-statement context", + ALLOCSET_DEFAULT_SIZES); + oldcontext = MemoryContextSwitchTo(per_parsetree_context); + /* Be sure parser can see any DDL done so far */ CommandCounterIncrement(); @@ -772,6 +784,10 @@ execute_sql_string(const char *sql) PopActiveSnapshot(); } + + /* Clean up per-parsetree context. */ + MemoryContextSwitchTo(oldcontext); + MemoryContextDelete(per_parsetree_context); } /* Be sure to advance the command counter after the last script command */ |