1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/test/test_simple_task_runner.h"
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/memory/ptr_util.h"
#include "base/task/single_thread_task_runner.h"
namespace base {
TestSimpleTaskRunner::TestSimpleTaskRunner() = default;
TestSimpleTaskRunner::~TestSimpleTaskRunner() = default;
bool TestSimpleTaskRunner::PostDelayedTask(const Location& from_here,
OnceClosure task,
TimeDelta delay) {
AutoLock auto_lock(lock_);
pending_tasks_.push_back(TestPendingTask(from_here, std::move(task),
TimeTicks(), delay,
TestPendingTask::NESTABLE));
return true;
}
bool TestSimpleTaskRunner::PostNonNestableDelayedTask(const Location& from_here,
OnceClosure task,
TimeDelta delay) {
AutoLock auto_lock(lock_);
pending_tasks_.push_back(TestPendingTask(from_here, std::move(task),
TimeTicks(), delay,
TestPendingTask::NON_NESTABLE));
return true;
}
// TODO(gab): Use SequenceToken here to differentiate between tasks running in
// the scope of this TestSimpleTaskRunner and other task runners sharing this
// thread. http://crbug.com/631186
bool TestSimpleTaskRunner::RunsTasksInCurrentSequence() const {
return thread_ref_ == PlatformThread::CurrentRef();
}
base::circular_deque<TestPendingTask> TestSimpleTaskRunner::TakePendingTasks() {
AutoLock auto_lock(lock_);
return std::move(pending_tasks_);
}
size_t TestSimpleTaskRunner::NumPendingTasks() const {
AutoLock auto_lock(lock_);
return pending_tasks_.size();
}
bool TestSimpleTaskRunner::HasPendingTask() const {
AutoLock auto_lock(lock_);
return !pending_tasks_.empty();
}
base::TimeDelta TestSimpleTaskRunner::NextPendingTaskDelay() const {
AutoLock auto_lock(lock_);
return pending_tasks_.front().GetTimeToRun() - base::TimeTicks();
}
base::TimeDelta TestSimpleTaskRunner::FinalPendingTaskDelay() const {
AutoLock auto_lock(lock_);
return pending_tasks_.back().GetTimeToRun() - base::TimeTicks();
}
void TestSimpleTaskRunner::ClearPendingTasks() {
AutoLock auto_lock(lock_);
pending_tasks_.clear();
}
void TestSimpleTaskRunner::RunPendingTasks() {
DCHECK(RunsTasksInCurrentSequence());
// Swap with a local variable to avoid re-entrancy problems.
base::circular_deque<TestPendingTask> tasks_to_run;
{
AutoLock auto_lock(lock_);
tasks_to_run.swap(pending_tasks_);
}
// Multiple test task runners can share the same thread for determinism in
// unit tests. Make sure this TestSimpleTaskRunner's tasks run in its scope.
std::optional<SingleThreadTaskRunner::CurrentHandleOverrideForTesting>
ttrh_override;
if (!SingleThreadTaskRunner::HasCurrentDefault() ||
SingleThreadTaskRunner::GetCurrentDefault() != this) {
ttrh_override.emplace(this);
}
for (auto& task : tasks_to_run) {
std::move(task.task).Run();
}
}
void TestSimpleTaskRunner::RunUntilIdle() {
while (HasPendingTask()) {
RunPendingTasks();
}
}
} // namespace base
|
