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
116 } // namespace
117 } // namespace serving
118 } // namespace tensorflow
119