src/cc/test/test_now_source.cc

   1 // Copyright 2014 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 #include <limits>
   6 #include <string>
   7
   8 #include "cc/test/test_now_source.h"
   9
  10 namespace cc {
  11
  12 // TestNowSource::Constructors
  13 scoped_refptr<TestNowSource> TestNowSource::Create() {
  14   return make_scoped_refptr(new TestNowSource());
  15 }
  16
  17 scoped_refptr<TestNowSource> TestNowSource::Create(base::TimeTicks initial) {
  18   return make_scoped_refptr(new TestNowSource(initial));
  19 }
  20
  21 scoped_refptr<TestNowSource> TestNowSource::Create(int64_t initial) {
  22   return make_scoped_refptr(new TestNowSource(initial));
  23 }
  24
  25 TestNowSource::TestNowSource()
  26     : initial_(base::TimeTicks::FromInternalValue(10000)), now_() {
  27   Reset();
  28 }
  29
  30 TestNowSource::TestNowSource(base::TimeTicks initial)
  31     : initial_(initial), now_() {
  32   Reset();
  33 }
  34
  35 TestNowSource::TestNowSource(int64_t initial)
  36     : initial_(base::TimeTicks::FromInternalValue(initial)), now_() {
  37   Reset();
  38 }
  39
  40 TestNowSource::~TestNowSource() {
  41 }
  42
  43 // TestNowSource actual functionality
  44 void TestNowSource::Reset() {
  45   TRACE_EVENT_INSTANT2("cc",
  46                        "TestNowSource::Reset",
  47                        TRACE_EVENT_SCOPE_THREAD,
  48                        "previous",
  49                        now_,
  50                        "initial",
  51                        initial_);
  52   now_ = initial_;
  53 }
  54
  55 base::TimeTicks TestNowSource::Now() const {
  56   return now_;
  57 }
  58
  59 void TestNowSource::SetNow(base::TimeTicks time) {
  60   TRACE_EVENT_INSTANT2("cc",
  61                        "TestNowSource::SetNow",
  62                        TRACE_EVENT_SCOPE_THREAD,
  63                        "previous",
  64                        now_,
  65                        "new",
  66                        time);
  67   DCHECK(time >= now_);  // Time should always go forward.
  68   now_ = time;
  69 }
  70
  71 void TestNowSource::AdvanceNow(base::TimeDelta period) {
  72   TRACE_EVENT_INSTANT2("cc",
  73                        "TestNowSource::AdvanceNow",
  74                        TRACE_EVENT_SCOPE_THREAD,
  75                        "previous",
  76                        now_,
  77                        "by",
  78                        period.ToInternalValue());
  79   DCHECK(now_ != kAbsoluteMaxNow);
  80   DCHECK(period >= base::TimeDelta());  // Time should always go forward.
  81   now_ += period;
  82 }
  83
  84 const base::TimeTicks TestNowSource::kAbsoluteMaxNow =
  85     base::TimeTicks::FromInternalValue(std::numeric_limits<int64_t>::max());
  86
  87 // TestNowSource::Convenience functions
  88 void TestNowSource::AdvanceNowMicroseconds(int64_t period_in_microseconds) {
  89   AdvanceNow(base::TimeDelta::FromMicroseconds(period_in_microseconds));
  90 }
  91 void TestNowSource::SetNowMicroseconds(int64_t time_in_microseconds) {
  92   SetNow(base::TimeTicks::FromInternalValue(time_in_microseconds));
  93 }
  94
  95 // TestNowSource::Tracing functions
  96 void TestNowSource::AsValueInto(base::debug::TracedValue* state) const {
  97   state->SetInteger("now_in_microseconds", now_.ToInternalValue());
  98 }
  99
 100 scoped_refptr<base::debug::ConvertableToTraceFormat> TestNowSource::AsValue()
 101     const {
 102   scoped_refptr<base::debug::TracedValue> state =
 103       new base::debug::TracedValue();
 104   AsValueInto(state.get());
 105   return state;
 106 }
 107
 108 // TestNowSource::Pretty printing functions
 109 std::string TestNowSource::ToString() const {
 110   std::string output("TestNowSource(");
 111   AsValue()->AppendAsTraceFormat(&output);
 112   output += ")";
 113   return output;
 114 }
 115
 116 ::std::ostream& operator<<(::std::ostream& os,
 117                            const scoped_refptr<TestNowSource>& src) {
 118   os << src->ToString();
 119   return os;
 120 }
 121 void PrintTo(const scoped_refptr<TestNowSource>& src, ::std::ostream* os) {
 122   *os << src;
 123 }
 124
 125 }  // namespace cc