Update extensions with GIN/GIST support for parallel query.

Commit 749a787c5b bumped the extension
version on all of these extensions already, and we haven't had a
release since then, so we can make further changes without bumping the
extension version again.  Take this opportunity to mark all of the
functions exported by these modules PARALLEL SAFE -- except for
pg_trgm's set_limit().  Mark that one PARALLEL RESTRICTED, because it
makes a persistent change to a GUC value.

Note that some of the markings added by this commit don't have any
effect; for example, gseg_picksplit() isn't likely to be mentioned
explicitly in a query and therefore it's parallel-safety marking will
never be consulted.  But this commit just marks everything for
consistency: if it were somehow used in a query, that would be fine as
far as parallel query is concerned, since it does not consult any
backend-private state, attempt to write data, etc.

Andreas Karlsson, with a few revisions by me.

contrib/cube/cube--1.1--1.2.sql

@@ -17,3 +17,44 @@ FROM (VALUES
 ('g_cube_distance(internal,cube,smallint,oid)', '{internal,cube,smallint,oid,internal}')
 ) AS update_data (oldproc, newtypes)
 WHERE oid = pg_catalog.to_regprocedure(oldproc);
+
+ALTER FUNCTION cube_in(cstring) PARALLEL SAFE;
+ALTER FUNCTION cube(float8[], float8[]) PARALLEL SAFE;
+ALTER FUNCTION cube(float8[]) PARALLEL SAFE;
+ALTER FUNCTION cube_out(cube) PARALLEL SAFE;
+ALTER FUNCTION cube_eq(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_ne(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_lt(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_gt(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_le(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_ge(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_cmp(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_contains(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_contained(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_overlap(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_union(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_inter(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_size(cube) PARALLEL SAFE;
+ALTER FUNCTION cube_subset(cube, int4[]) PARALLEL SAFE;
+ALTER FUNCTION cube_distance(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION distance_chebyshev(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION distance_taxicab(cube, cube) PARALLEL SAFE;
+ALTER FUNCTION cube_dim(cube) PARALLEL SAFE;
+ALTER FUNCTION cube_ll_coord(cube, int4) PARALLEL SAFE;
+ALTER FUNCTION cube_ur_coord(cube, int4) PARALLEL SAFE;
+ALTER FUNCTION cube_coord(cube, int4) PARALLEL SAFE;
+ALTER FUNCTION cube_coord_llur(cube, int4) PARALLEL SAFE;
+ALTER FUNCTION cube(float8) PARALLEL SAFE;
+ALTER FUNCTION cube(float8, float8) PARALLEL SAFE;
+ALTER FUNCTION cube(cube, float8) PARALLEL SAFE;
+ALTER FUNCTION cube(cube, float8, float8) PARALLEL SAFE;
+ALTER FUNCTION cube_is_point(cube) PARALLEL SAFE;
+ALTER FUNCTION cube_enlarge(cube, float8, int4) PARALLEL SAFE;
+ALTER FUNCTION g_cube_consistent(internal, cube, smallint, oid, internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_compress(internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_decompress(internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_penalty(internal, internal, internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_picksplit(internal, internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_union(internal, internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_same(cube, cube, internal) PARALLEL SAFE;
+ALTER FUNCTION g_cube_distance(internal, cube, smallint, oid, internal) PARALLEL SAFE;

contrib/cube/cube--1.2.sql

@@ -8,20 +8,20 @@
 CREATE FUNCTION cube_in(cstring)
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(float8[], float8[]) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_a_f8_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(float8[]) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_a_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_out(cube)
 RETURNS cstring
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE TYPE cube (
 	INTERNALLENGTH = variable,
@@ -41,70 +41,70 @@ COMMENT ON TYPE cube IS 'multi-dimensional cube ''(FLOAT-1, FLOAT-2, ..., FLOAT-
 CREATE FUNCTION cube_eq(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_eq(cube, cube) IS 'same as';
 
 CREATE FUNCTION cube_ne(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_ne(cube, cube) IS 'different';
 
 CREATE FUNCTION cube_lt(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_lt(cube, cube) IS 'lower than';
 
 CREATE FUNCTION cube_gt(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_gt(cube, cube) IS 'greater than';
 
 CREATE FUNCTION cube_le(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_le(cube, cube) IS 'lower than or equal to';
 
 CREATE FUNCTION cube_ge(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_ge(cube, cube) IS 'greater than or equal to';
 
 CREATE FUNCTION cube_cmp(cube, cube)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_cmp(cube, cube) IS 'btree comparison function';
 
 CREATE FUNCTION cube_contains(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_contains(cube, cube) IS 'contains';
 
 CREATE FUNCTION cube_contained(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_contained(cube, cube) IS 'contained in';
 
 CREATE FUNCTION cube_overlap(cube, cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 COMMENT ON FUNCTION cube_overlap(cube, cube) IS 'overlaps';
 
@@ -113,17 +113,17 @@ COMMENT ON FUNCTION cube_overlap(cube, cube) IS 'overlaps';
 CREATE FUNCTION cube_union(cube, cube)
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_inter(cube, cube)
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_size(cube)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 
 -- Misc N-dimensional functions
@@ -131,81 +131,81 @@ LANGUAGE C IMMUTABLE STRICT;
 CREATE FUNCTION cube_subset(cube, int4[])
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 -- proximity routines
 
 CREATE FUNCTION cube_distance(cube, cube)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION distance_chebyshev(cube, cube)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION distance_taxicab(cube, cube)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 -- Extracting elements functions
 
 CREATE FUNCTION cube_dim(cube)
 RETURNS int4
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_ll_coord(cube, int4)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_ur_coord(cube, int4)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_coord(cube, int4)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube_coord_llur(cube, int4)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(float8) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(float8, float8) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_f8_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(cube, float8) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_c_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION cube(cube, float8, float8) RETURNS cube
 AS 'MODULE_PATHNAME', 'cube_c_f8_f8'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 -- Test if cube is also a point
 
 CREATE FUNCTION cube_is_point(cube)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 -- Increasing the size of a cube by a radius in at least n dimensions
 
 CREATE FUNCTION cube_enlarge(cube, float8, int4)
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 --
 -- OPERATORS
@@ -307,42 +307,42 @@ CREATE OPERATOR ~ (
 CREATE FUNCTION g_cube_consistent(internal,cube,smallint,oid,internal)
 RETURNS bool
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_compress(internal)
 RETURNS internal
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_decompress(internal)
 RETURNS internal
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_penalty(internal,internal,internal)
 RETURNS internal
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_picksplit(internal, internal)
 RETURNS internal
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_union(internal, internal)
 RETURNS cube
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_same(cube, cube, internal)
 RETURNS internal
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE FUNCTION g_cube_distance (internal, cube, smallint, oid, internal)
 RETURNS float8
 AS 'MODULE_PATHNAME'
-LANGUAGE C IMMUTABLE STRICT;
+LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 -- Create the operator classes for indexing