Region downloading

pacman/data/pacman_data_view.py

@@ -13,8 +13,8 @@
 # limitations under the License.
 from __future__ import annotations
 import logging
-from typing import (Iterable, List, Optional, Sequence, Type, TypeVar,
-                    TYPE_CHECKING)
+from typing import (Iterable, List, Optional, Sequence, Tuple, Type, TypeVar,
+                    TYPE_CHECKING, Union)
 
 from spinn_utilities.log import FormatAdapter
 from spinn_utilities.typing.coords import XY
@@ -352,11 +352,13 @@ def iterate_placemements(cls) -> Iterable[Placement]:
 
     @classmethod
     def iterate_placements_by_vertex_type(
-            cls, vertex_type: Type[VTX]) -> Iterable[Placement]:
+            cls, vertex_type: Union[
+                type, Tuple[type, ...]]) -> Iterable[Placement]:
         """
         Iterate over placements on any chip with this vertex_type.
 
-        :param type vertex_type: Class of vertex to find
+        :param vertex_type: Class of vertex to find
+        :type vertex_type: type or tuple(type)
         :rtype: iterable(Placement)
         :raises ~spinn_utilities.exceptions.SpiNNUtilsException:
             If the placements are currently unavailable
@@ -382,11 +384,14 @@ def iterate_placements_on_core(cls, xy: XY) -> Iterable[Placement]:
 
     @classmethod
     def iterate_placements_by_xy_and_type(
-            cls, xy: XY, vertex_type: Type[VTX]) -> Iterable[Placement]:
+            cls, xy: XY, vertex_type: Union[
+                type, Tuple[type, ...]]) -> Iterable[Placement]:
         """
         Iterate over placements with this x, y and type.
 
         :param tuple(int, int) xy: x and y coordinates to find placements for.
+        :param vertex_type: Class of vertex to find
+        :type vertex_type: type or tuple(type)
         :param type vertex_type: Class of vertex to find
         :rtype: iterable(Placement)
         :raises ~spinn_utilities.exceptions.SpiNNUtilsException:

pacman/model/placements/placements.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from collections import defaultdict
-from typing import Collection, Dict, Iterable, Iterator
+from typing import Collection, Dict, Iterable, Iterator, Tuple, Union
 
 from spinn_utilities.typing.coords import XY
 
@@ -152,24 +152,28 @@ def iterate_placements_on_core(self, xy: XY) -> Iterable[Placement]:
         return self._placements[xy].values()
 
     def iterate_placements_by_xy_and_type(
-            self, xy: XY, vertex_type: type) -> Iterable[Placement]:
+            self, xy: XY, vertex_type: Union[
+                type, Tuple[type, ...]]) -> Iterable[Placement]:
         """
         Iterate over placements with this x, y and this vertex_type.
 
         :param tuple(int, int) xy: x and y coordinate to find placements for.
-        :param class vertex_type: Class of vertex to find
+        :param vertex_type: Class of vertex to find
+        :type vertex_type: class or tuple(class)
         :rtype: iterable(Placement)
         """
         for placement in self._placements[xy].values():
             if isinstance(placement.vertex, vertex_type):
                 yield placement
 
     def iterate_placements_by_vertex_type(
-            self, vertex_type: type) -> Iterable[Placement]:
+            self, vertex_type: Union[
+                type, Tuple[type, ...]]) -> Iterable[Placement]:
         """
         Iterate over placements on any chip with this vertex_type.
 
-        :param class vertex_type: Class of vertex to find
+        :param vertex_type: Class of vertex to find
+        :type vertex_type: type or tuple(type)
         :rtype: iterable(Placement)
         """
         for placement in self._machine_vertices.values():

unittests/model_tests/placement_tests/test_placement_object.py

@@ -17,11 +17,24 @@
 """
 import unittest
 from pacman.config_setup import unittest_setup
+from pacman.data.pacman_data_writer import PacmanDataWriter
 from pacman.exceptions import PacmanAlreadyPlacedError
 from pacman.model.graphs.machine import SimpleMachineVertex
 from pacman.model.placements import Placement, Placements
 
 
+class ExtendedVertex1(SimpleMachineVertex):
+    pass
+
+
+class ExtendedVertex2(SimpleMachineVertex):
+    pass
+
+
+class ExtendedVertex3(SimpleMachineVertex):
+    pass
+
+
 class TestPlacement(unittest.TestCase):
     """
     tester for placement object in pacman.model.placements.placement
@@ -58,6 +71,37 @@ def test_create_new_placements_duplicate_vertex(self):
         with self.assertRaises(PacmanAlreadyPlacedError):
             Placements(pl)
 
+    def test_iterate_by_type(self):
+        v1a = ExtendedVertex1(None)
+        p1a = Placement(v1a, 0, 1, 1)
+        v1b = ExtendedVertex1(None)
+        p1b = Placement(v1b, 0, 2, 1)
+        v2 = ExtendedVertex2(None)
+        p2 = Placement(v2, 0, 0, 2)
+        v3 = ExtendedVertex3(None)
+        p3 = Placement(v3, 0, 0, 3)
+        placements = Placements([p1a, p1b, p2, p3])
+        l1 = list(placements.iterate_placements_by_vertex_type(
+            ExtendedVertex1))
+        self.assertListEqual(l1, [p1a, p1b])
+        l2 = list(placements.iterate_placements_by_vertex_type(
+            (ExtendedVertex2, ExtendedVertex1)))
+        self.assertListEqual(l2, [p1a, p1b, p2])
+        l3 = list(placements.iterate_placements_by_xy_and_type(
+            (0, 0), (ExtendedVertex3, ExtendedVertex2)))
+        self.assertListEqual(l3, [p2, p3])
+        writer = PacmanDataWriter.setup()
+        writer.set_placements(placements)
+        l1 = list(writer.iterate_placements_by_vertex_type(
+            ExtendedVertex1))
+        self.assertListEqual(l1, [p1a, p1b])
+        l2 = list(writer.iterate_placements_by_vertex_type(
+            (ExtendedVertex2, ExtendedVertex1)))
+        self.assertListEqual(l2, [p1a, p1b, p2])
+        l3 = list(writer.iterate_placements_by_xy_and_type(
+            (0, 0), (ExtendedVertex3, ExtendedVertex2)))
+        self.assertListEqual(l3, [p2, p3])
+
 
 if __name__ == '__main__':
     unittest.main()