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1 // Copyright (c) 2012 The Chromium 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 #ifndef NET_TOOLS_QUIC_TEST_TOOLS_MOCK_EPOLL_SERVER_H_ | |
6 #define NET_TOOLS_QUIC_TEST_TOOLS_MOCK_EPOLL_SERVER_H_ | |
7 | |
8 #include "base/logging.h" | |
9 #include "net/tools/epoll_server/epoll_server.h" | |
10 #include "testing/gmock/include/gmock/gmock.h" | |
11 | |
12 namespace net { | |
13 namespace tools { | |
14 namespace test { | |
15 | |
16 // Unlike the full MockEpollServer, this only lies about the time but lets | |
17 // fd events operate normally. Usefully when interacting with real backends | |
18 // but wanting to skip forward in time to trigger timeouts. | |
19 class FakeTimeEpollServer : public EpollServer { | |
20 public: | |
21 FakeTimeEpollServer(); | |
22 ~FakeTimeEpollServer() override; | |
23 | |
24 // Replaces the EpollServer NowInUsec. | |
25 int64 NowInUsec() const override; | |
26 | |
27 void set_now_in_usec(int64 nius) { now_in_usec_ = nius; } | |
28 | |
29 // Advances the virtual 'now' by advancement_usec. | |
30 void AdvanceBy(int64 advancement_usec) { | |
31 set_now_in_usec(NowInUsec() + advancement_usec); | |
32 } | |
33 | |
34 // Advances the virtual 'now' by advancement_usec, and | |
35 // calls WaitForEventAndExecteCallbacks. | |
36 // Note that the WaitForEventsAndExecuteCallbacks invocation | |
37 // may cause NowInUs to advance beyond what was specified here. | |
38 // If that is not desired, use the AdvanceByExactly calls. | |
39 void AdvanceByAndCallCallbacks(int64 advancement_usec) { | |
40 AdvanceBy(advancement_usec); | |
41 WaitForEventsAndExecuteCallbacks(); | |
42 } | |
43 | |
44 private: | |
45 int64 now_in_usec_; | |
46 | |
47 DISALLOW_COPY_AND_ASSIGN(FakeTimeEpollServer); | |
48 }; | |
49 | |
50 class MockEpollServer : public FakeTimeEpollServer { | |
51 public: // type definitions | |
52 typedef base::hash_multimap<int64, struct epoll_event> EventQueue; | |
53 | |
54 MockEpollServer(); | |
55 ~MockEpollServer() override; | |
56 | |
57 // time_in_usec is the time at which the event specified | |
58 // by 'ee' will be delivered. Note that it -is- possible | |
59 // to add an event for a time which has already been passed.. | |
60 // .. upon the next time that the callbacks are invoked, | |
61 // all events which are in the 'past' will be delivered. | |
62 void AddEvent(int64 time_in_usec, const struct epoll_event& ee) { | |
63 event_queue_.insert(std::make_pair(time_in_usec, ee)); | |
64 } | |
65 | |
66 // Advances the virtual 'now' by advancement_usec, | |
67 // and ensure that the next invocation of | |
68 // WaitForEventsAndExecuteCallbacks goes no farther than | |
69 // advancement_usec from the current time. | |
70 void AdvanceByExactly(int64 advancement_usec) { | |
71 until_in_usec_ = NowInUsec() + advancement_usec; | |
72 set_now_in_usec(NowInUsec() + advancement_usec); | |
73 } | |
74 | |
75 // As above, except calls WaitForEventsAndExecuteCallbacks. | |
76 void AdvanceByExactlyAndCallCallbacks(int64 advancement_usec) { | |
77 AdvanceByExactly(advancement_usec); | |
78 WaitForEventsAndExecuteCallbacks(); | |
79 } | |
80 | |
81 base::hash_set<AlarmCB*>::size_type NumberOfAlarms() const { | |
82 return all_alarms_.size(); | |
83 } | |
84 | |
85 protected: // functions | |
86 // These functions do nothing here, as we're not actually | |
87 // using the epoll_* syscalls. | |
88 void DelFD(int fd) const override {} | |
89 void AddFD(int fd, int event_mask) const override {} | |
90 void ModFD(int fd, int event_mask) const override {} | |
91 | |
92 // Replaces the epoll_server's epoll_wait_impl. | |
93 int epoll_wait_impl(int epfd, | |
94 struct epoll_event* events, | |
95 int max_events, | |
96 int timeout_in_ms) override; | |
97 void SetNonblocking(int fd) override {} | |
98 | |
99 private: // members | |
100 EventQueue event_queue_; | |
101 int64 until_in_usec_; | |
102 | |
103 DISALLOW_COPY_AND_ASSIGN(MockEpollServer); | |
104 }; | |
105 | |
106 } // namespace test | |
107 } // namespace tools | |
108 } // namespace net | |
109 | |
110 #endif // NET_TOOLS_QUIC_TEST_TOOLS_MOCK_EPOLL_SERVER_H_ | |
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