1 /* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
2
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15
16 #include "tensorflow/core/kernels/batching_util/batch_scheduler.h"
17
18 #include "tensorflow/core/platform/env.h"
19 #include "tensorflow/core/platform/macros.h"
20 #include "tensorflow/core/platform/test.h"
21
22 namespace tensorflow {
23 namespace serving {
24 namespace {
25
26 class FakeTask : public BatchTask {
27 public:
FakeTask(size_t size)28 explicit FakeTask(size_t size) : size_(size) {}
29
30 ~FakeTask() override = default;
31
size() const32 size_t size() const override { return size_; }
33
34 private:
35 const size_t size_;
36
37 TF_DISALLOW_COPY_AND_ASSIGN(FakeTask);
38 };
39
TEST(BatchTest,Basic)40 TEST(BatchTest, Basic) {
41 Batch<FakeTask> batch;
42
43 EXPECT_EQ(0, batch.num_tasks());
44 EXPECT_TRUE(batch.empty());
45 EXPECT_EQ(0, batch.size());
46 EXPECT_FALSE(batch.IsClosed());
47
48 auto task0 = new FakeTask(3);
49 batch.AddTask(std::unique_ptr<FakeTask>(task0));
50
51 EXPECT_EQ(1, batch.num_tasks());
52 EXPECT_FALSE(batch.empty());
53 EXPECT_EQ(task0->size(), batch.size());
54 EXPECT_EQ(task0->size(), batch.task(0).size());
55 EXPECT_FALSE(batch.IsClosed());
56
57 auto task1 = new FakeTask(7);
58 batch.AddTask(std::unique_ptr<FakeTask>(task1));
59
60 EXPECT_EQ(2, batch.num_tasks());
61 EXPECT_FALSE(batch.empty());
62 EXPECT_EQ(task0->size() + task1->size(), batch.size());
63 EXPECT_EQ(task1->size(), batch.task(1).size());
64 EXPECT_EQ(task1->size(), batch.mutable_task(1)->size());
65 EXPECT_FALSE(batch.IsClosed());
66
67 batch.Close();
68 EXPECT_TRUE(batch.IsClosed());
69
70 EXPECT_EQ(2, batch.num_tasks());
71 EXPECT_FALSE(batch.empty());
72 EXPECT_EQ(task0->size() + task1->size(), batch.size());
73 EXPECT_EQ(task0->size(), batch.task(0).size());
74 EXPECT_EQ(task1->size(), batch.task(1).size());
75
76 EXPECT_EQ(7, batch.RemoveTask()->size());
77 EXPECT_EQ(3, batch.size());
78 EXPECT_EQ(3, batch.RemoveTask()->size());
79 EXPECT_EQ(0, batch.size());
80 EXPECT_TRUE(batch.empty());
81 }
82
TEST(BatchTest,WaitUntilClosed)83 TEST(BatchTest, WaitUntilClosed) {
84 Batch<FakeTask> batch;
85 batch.AddTask(std::unique_ptr<FakeTask>(new FakeTask(3)));
86 EXPECT_FALSE(batch.IsClosed());
87
88 std::unique_ptr<Thread> close_thread(
89 Env::Default()->StartThread(ThreadOptions(), "test", [&batch]() {
90 Env::Default()->SleepForMicroseconds(100);
91 batch.Close();
92 }));
93 batch.WaitUntilClosed();
94 EXPECT_TRUE(batch.IsClosed());
95 }
96
TEST(BatchTest,DeletionBlocksUntilClosed)97 TEST(BatchTest, DeletionBlocksUntilClosed) {
98 Batch<FakeTask>* batch = new Batch<FakeTask>;
99 batch->AddTask(std::unique_ptr<FakeTask>(new FakeTask(3)));
100 EXPECT_FALSE(batch->IsClosed());
101
102 Notification do_delete, deleted;
103 std::unique_ptr<Thread> delete_thread(Env::Default()->StartThread(
104 ThreadOptions(), "test", [&batch, &do_delete, &deleted]() {
105 do_delete.WaitForNotification();
106 delete batch;
107 deleted.Notify();
108 }));
109 do_delete.Notify();
110 Env::Default()->SleepForMicroseconds(10 * 1000 /* 10 milliseconds */);
111 EXPECT_FALSE(deleted.HasBeenNotified());
112 batch->Close();
113 deleted.WaitForNotification();
114 }
115
TEST(BatchTest,RemoveAllTasks)116 TEST(BatchTest, RemoveAllTasks) {
117 Batch<FakeTask> batch;
118
119 auto task0 = new FakeTask(3);
120 batch.AddTask(std::unique_ptr<FakeTask>(task0));
121
122 auto task1 = new FakeTask(7);
123 batch.AddTask(std::unique_ptr<FakeTask>(task1));
124
125 batch.Close();
126 EXPECT_TRUE(batch.IsClosed());
127
128 std::vector<std::unique_ptr<FakeTask>> tasks_in_batch =
129 batch.RemoveAllTasks();
130 EXPECT_EQ(2, tasks_in_batch.size());
131 EXPECT_TRUE(batch.empty());
132
133 EXPECT_EQ(task0, tasks_in_batch[0].get());
134 EXPECT_EQ(task1, tasks_in_batch[1].get());
135
136 // RemoveAllTasks returns empty vector from the second call and on, since
137 // batch is closed.
138 EXPECT_THAT(batch.RemoveAllTasks(), ::testing::IsEmpty()); // second call
139 EXPECT_THAT(batch.RemoveAllTasks(), ::testing::IsEmpty()); // third call
140 }
141
142 } // namespace
143 } // namespace serving
144 } // namespace tensorflow
145