| Flutter Impeller |

resource_manager_vk_unittests.cc
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <sys/types.h>
6 #include <functional>
7 #include <memory>
8 #include <utility>
9 #include "fml/closure.h"
10 #include "fml/synchronization/waitable_event.h"
11 #include "gtest/gtest.h"
12 #include "impeller/renderer/backend/vulkan/resource_manager_vk.h"
13
14 namespace impeller {
15 namespace testing {
16
17 // While expected to be a singleton per context, the class does not enforce it.
18 TEST(ResourceManagerVKTest, CreatesANewInstance) {
19 auto const a = ResourceManagerVK::Create();
20 auto const b = ResourceManagerVK::Create();
21 EXPECT_NE(a, b);
22 }
23
24 TEST(ResourceManagerVKTest, ReclaimMovesAResourceAndDestroysIt) {
25 auto const manager = ResourceManagerVK::Create();
26
27 auto waiter = fml::AutoResetWaitableEvent();
28 auto dead = false;
29 auto rattle = fml::ScopedCleanupClosure([&waiter]() { waiter.Signal(); });
30
31 // Not killed immediately.
32 EXPECT_FALSE(waiter.IsSignaledForTest());
33
34 {
35 auto resource = UniqueResourceVKT<fml::ScopedCleanupClosure>(
36 manager, std::move(rattle));
37 }
38
39 waiter.Wait();
40 }
41
42 // Regression test for https://github.com/flutter/flutter/issues/134482.
43 TEST(ResourceManagerVKTest, TerminatesWhenOutOfScope) {
44 // Originally, this shared_ptr was never destroyed, and the thread never
45 // terminated. This test ensures that the thread terminates when the
46 // ResourceManagerVK is out of scope.
47 std::weak_ptr<ResourceManagerVK> manager;
48
49 {
50 auto shared = ResourceManagerVK::Create();
51 manager = shared;
52 }
53
54 // The thread should have terminated.
55 EXPECT_EQ(manager.lock(), nullptr);
56 }
57
58 TEST(ResourceManagerVKTest, IsThreadSafe) {
59 // In a typical app, there is a single ResourceManagerVK per app, shared b/w
60 // threads.
61 //
62 // This test ensures that the ResourceManagerVK is thread-safe.
63 std::weak_ptr<ResourceManagerVK> manager;
64
65 {
66 auto const manager = ResourceManagerVK::Create();
67
68 // Spawn two threads, and have them both put resources into the manager.
69 struct MockResource {};
70
71 std::thread thread1([&manager]() {
72 UniqueResourceVKT<MockResource>(manager, MockResource{});
73 });
74
75 std::thread thread2([&manager]() {
76 UniqueResourceVKT<MockResource>(manager, MockResource{});
77 });
78
79 thread1.join();
80 thread2.join();
81 }
82
83 // The thread should have terminated.
84 EXPECT_EQ(manager.lock(), nullptr);
85 }
86
87 } // namespace testing
88 } // namespace impeller
impeller::ResourceManagerVK::Create
static std::shared_ptr< ResourceManagerVK > Create()
Creates a shared resource manager (a dedicated thread).
Definition: resource_manager_vk.cc:14
impeller::UniqueResourceVKT
A unique handle to a resource which will be reclaimed by the specified resource manager.
Definition: resource_manager_vk.h:143
impeller::testing::TEST
TEST(AiksCanvasTest, EmptyCullRect)
Definition: canvas_unittests.cc:18
resource_manager_vk.h
impeller::saturated::b
SI b
Definition: saturated_math.h:87
impeller
Definition: aiks_blend_unittests.cc:18