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Diffstat (limited to 'src/common/x64/native_clock.cpp')
-rw-r--r--src/common/x64/native_clock.cpp39
1 files changed, 20 insertions, 19 deletions
diff --git a/src/common/x64/native_clock.cpp b/src/common/x64/native_clock.cpp
index 488c8c905..c0d38cf6b 100644
--- a/src/common/x64/native_clock.cpp
+++ b/src/common/x64/native_clock.cpp
@@ -65,10 +65,8 @@ NativeClock::NativeClock(u64 emulated_cpu_frequency_, u64 emulated_clock_frequen
65 u64 rtsc_frequency_) 65 u64 rtsc_frequency_)
66 : WallClock(emulated_cpu_frequency_, emulated_clock_frequency_, true), rtsc_frequency{ 66 : WallClock(emulated_cpu_frequency_, emulated_clock_frequency_, true), rtsc_frequency{
67 rtsc_frequency_} { 67 rtsc_frequency_} {
68 TimePoint new_time_point{}; 68 time_point.inner.last_measure = FencedRDTSC();
69 new_time_point.last_measure = FencedRDTSC(); 69 time_point.inner.accumulated_ticks = 0U;
70 new_time_point.accumulated_ticks = 0U;
71 time_point.store(new_time_point);
72 ns_rtsc_factor = GetFixedPoint64Factor(NS_RATIO, rtsc_frequency); 70 ns_rtsc_factor = GetFixedPoint64Factor(NS_RATIO, rtsc_frequency);
73 us_rtsc_factor = GetFixedPoint64Factor(US_RATIO, rtsc_frequency); 71 us_rtsc_factor = GetFixedPoint64Factor(US_RATIO, rtsc_frequency);
74 ms_rtsc_factor = GetFixedPoint64Factor(MS_RATIO, rtsc_frequency); 72 ms_rtsc_factor = GetFixedPoint64Factor(MS_RATIO, rtsc_frequency);
@@ -77,32 +75,35 @@ NativeClock::NativeClock(u64 emulated_cpu_frequency_, u64 emulated_clock_frequen
77} 75}
78 76
79u64 NativeClock::GetRTSC() { 77u64 NativeClock::GetRTSC() {
78 TimePoint current_time_point{};
80 TimePoint new_time_point{}; 79 TimePoint new_time_point{};
81 TimePoint current_time_point = time_point.load(std::memory_order_acquire); 80
81 current_time_point.pack = Common::AtomicLoad128(time_point.pack.data());
82 do { 82 do {
83 const u64 current_measure = FencedRDTSC(); 83 const u64 current_measure = FencedRDTSC();
84 u64 diff = current_measure - current_time_point.last_measure; 84 u64 diff = current_measure - current_time_point.inner.last_measure;
85 diff = diff & ~static_cast<u64>(static_cast<s64>(diff) >> 63); // max(diff, 0) 85 diff = diff & ~static_cast<u64>(static_cast<s64>(diff) >> 63); // max(diff, 0)
86 new_time_point.last_measure = current_measure > current_time_point.last_measure 86 new_time_point.inner.last_measure = current_measure > current_time_point.inner.last_measure
87 ? current_measure 87 ? current_measure
88 : current_time_point.last_measure; 88 : current_time_point.inner.last_measure;
89 new_time_point.accumulated_ticks = current_time_point.accumulated_ticks + diff; 89 new_time_point.inner.accumulated_ticks = current_time_point.inner.accumulated_ticks + diff;
90 } while (!time_point.compare_exchange_weak( 90 } while (!Common::AtomicCompareAndSwap(time_point.pack.data(), new_time_point.pack,
91 current_time_point, new_time_point, std::memory_order_release, std::memory_order_acquire)); 91 current_time_point.pack, current_time_point.pack));
92 /// The clock cannot be more precise than the guest timer, remove the lower bits 92 /// The clock cannot be more precise than the guest timer, remove the lower bits
93 return new_time_point.accumulated_ticks; 93 return new_time_point.inner.accumulated_ticks;
94} 94}
95 95
96void NativeClock::Pause(bool is_paused) { 96void NativeClock::Pause(bool is_paused) {
97 if (!is_paused) { 97 if (!is_paused) {
98 TimePoint current_time_point{};
98 TimePoint new_time_point{}; 99 TimePoint new_time_point{};
99 TimePoint current_time_point = time_point.load(std::memory_order_acquire); 100
101 current_time_point.pack = Common::AtomicLoad128(time_point.pack.data());
100 do { 102 do {
101 new_time_point = current_time_point; 103 new_time_point.pack = current_time_point.pack;
102 new_time_point.last_measure = FencedRDTSC(); 104 new_time_point.inner.last_measure = FencedRDTSC();
103 } while (!time_point.compare_exchange_weak(current_time_point, new_time_point, 105 } while (!Common::AtomicCompareAndSwap(time_point.pack.data(), new_time_point.pack,
104 std::memory_order_release, 106 current_time_point.pack, current_time_point.pack));
105 std::memory_order_acquire));
106 } 107 }
107} 108}
108 109