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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/executor/execdesc.h | |
parent | Initial commit. (diff) | |
download | postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.tar.xz postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.zip |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/executor/execdesc.h')
-rw-r--r-- | src/include/executor/execdesc.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/include/executor/execdesc.h b/src/include/executor/execdesc.h new file mode 100644 index 0000000..b5cead3 --- /dev/null +++ b/src/include/executor/execdesc.h @@ -0,0 +1,70 @@ +/*------------------------------------------------------------------------- + * + * execdesc.h + * plan and query descriptor accessor macros used by the executor + * and related modules. + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/executor/execdesc.h + * + *------------------------------------------------------------------------- + */ +#ifndef EXECDESC_H +#define EXECDESC_H + +#include "nodes/execnodes.h" +#include "tcop/dest.h" + + +/* ---------------- + * query descriptor: + * + * a QueryDesc encapsulates everything that the executor + * needs to execute the query. + * + * For the convenience of SQL-language functions, we also support QueryDescs + * containing utility statements; these must not be passed to the executor + * however. + * --------------------- + */ +typedef struct QueryDesc +{ + /* These fields are provided by CreateQueryDesc */ + CmdType operation; /* CMD_SELECT, CMD_UPDATE, etc. */ + PlannedStmt *plannedstmt; /* planner's output (could be utility, too) */ + const char *sourceText; /* source text of the query */ + Snapshot snapshot; /* snapshot to use for query */ + Snapshot crosscheck_snapshot; /* crosscheck for RI update/delete */ + DestReceiver *dest; /* the destination for tuple output */ + ParamListInfo params; /* param values being passed in */ + QueryEnvironment *queryEnv; /* query environment passed in */ + int instrument_options; /* OR of InstrumentOption flags */ + + /* These fields are set by ExecutorStart */ + TupleDesc tupDesc; /* descriptor for result tuples */ + EState *estate; /* executor's query-wide state */ + PlanState *planstate; /* tree of per-plan-node state */ + + /* This field is set by ExecutorRun */ + bool already_executed; /* true if previously executed */ + + /* This is always set NULL by the core system, but plugins can change it */ + struct Instrumentation *totaltime; /* total time spent in ExecutorRun */ +} QueryDesc; + +/* in pquery.c */ +extern QueryDesc *CreateQueryDesc(PlannedStmt *plannedstmt, + const char *sourceText, + Snapshot snapshot, + Snapshot crosscheck_snapshot, + DestReceiver *dest, + ParamListInfo params, + QueryEnvironment *queryEnv, + int instrument_options); + +extern void FreeQueryDesc(QueryDesc *qdesc); + +#endif /* EXECDESC_H */ |