diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/commands/explain.c | 13 | ||||
| -rw-r--r-- | src/include/commands/explain.h | 17 |
2 files changed, 30 insertions, 0 deletions
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c index ab3898ff1eb..22616cf7add 100644 --- a/src/backend/commands/explain.c +++ b/src/backend/commands/explain.c @@ -52,6 +52,9 @@ ExplainOneQuery_hook_type ExplainOneQuery_hook = NULL; /* Hook for plugins to get control in explain_get_index_name() */ explain_get_index_name_hook_type explain_get_index_name_hook = NULL; +/* per-plan and per-node hooks for plugins to print additional info */ +explain_per_plan_hook_type explain_per_plan_hook = NULL; +explain_per_node_hook_type explain_per_node_hook = NULL; /* * Various places within need to convert bytes to kilobytes. Round these up @@ -654,6 +657,11 @@ ExplainOnePlan(PlannedStmt *plannedstmt, CachedPlan *cplan, if (es->serialize != EXPLAIN_SERIALIZE_NONE) ExplainPrintSerialize(es, &serializeMetrics); + /* Allow plugins to print additional information */ + if (explain_per_plan_hook) + (*explain_per_plan_hook) (plannedstmt, into, es, queryString, + params, queryEnv); + /* * Close down the query and free resources. Include time for this in the * total execution time (although it should be pretty minimal). @@ -2318,6 +2326,11 @@ ExplainNode(PlanState *planstate, List *ancestors, ExplainFlushWorkersState(es); es->workers_state = save_workers_state; + /* Allow plugins to print additional information */ + if (explain_per_node_hook) + (*explain_per_node_hook) (planstate, ancestors, relationship, + plan_name, es); + /* * If partition pruning was done during executor initialization, the * number of child plans we'll display below will be less than the number diff --git a/src/include/commands/explain.h b/src/include/commands/explain.h index 54dc5e5c254..387839eb5d2 100644 --- a/src/include/commands/explain.h +++ b/src/include/commands/explain.h @@ -28,6 +28,23 @@ typedef void (*ExplainOneQuery_hook_type) (Query *query, QueryEnvironment *queryEnv); extern PGDLLIMPORT ExplainOneQuery_hook_type ExplainOneQuery_hook; +/* Hook for EXPLAIN plugins to print extra information for each plan */ +typedef void (*explain_per_plan_hook_type) (PlannedStmt *plannedstmt, + IntoClause *into, + struct ExplainState *es, + const char *queryString, + ParamListInfo params, + QueryEnvironment *queryEnv); +extern PGDLLIMPORT explain_per_plan_hook_type explain_per_plan_hook; + +/* Hook for EXPLAIN plugins to print extra fields on individual plan nodes */ +typedef void (*explain_per_node_hook_type) (PlanState *planstate, + List *ancestors, + const char *relationship, + const char *plan_name, + struct ExplainState *es); +extern PGDLLIMPORT explain_per_node_hook_type explain_per_node_hook; + /* Hook for plugins to get control in explain_get_index_name() */ typedef const char *(*explain_get_index_name_hook_type) (Oid indexId); extern PGDLLIMPORT explain_get_index_name_hook_type explain_get_index_name_hook; |