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 virtual ~FakeTimeEpollServer(); 23 24 // Replaces the EpollServer NowInUsec. 25 virtual int64 NowInUsec() const OVERRIDE; 26 set_now_in_usec(int64 nius)27 void set_now_in_usec(int64 nius) { now_in_usec_ = nius; } 28 29 // Advances the virtual 'now' by advancement_usec. AdvanceBy(int64 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. AdvanceByAndCallCallbacks(int64 advancement_usec)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 virtual ~MockEpollServer(); 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. AddEvent(int64 time_in_usec,const struct epoll_event & ee)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. AdvanceByExactly(int64 advancement_usec)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. AdvanceByExactlyAndCallCallbacks(int64 advancement_usec)76 void AdvanceByExactlyAndCallCallbacks(int64 advancement_usec) { 77 AdvanceByExactly(advancement_usec); 78 WaitForEventsAndExecuteCallbacks(); 79 } 80 NumberOfAlarms()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. DelFD(int fd)88 virtual void DelFD(int fd) const OVERRIDE {} AddFD(int fd,int event_mask)89 virtual void AddFD(int fd, int event_mask) const OVERRIDE {} ModFD(int fd,int event_mask)90 virtual void ModFD(int fd, int event_mask) const OVERRIDE {} 91 92 // Replaces the epoll_server's epoll_wait_impl. 93 virtual int epoll_wait_impl(int epfd, 94 struct epoll_event* events, 95 int max_events, 96 int timeout_in_ms) OVERRIDE; SetNonblocking(int fd)97 virtual 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_ 111