integrating the existing state of TON Storage / TON Payments / CPS Fift development branches

tdutils/td/utils/Time.cpp

@@ -19,14 +19,36 @@
 #include "td/utils/Time.h"
 
 #include <cmath>
+#include <atomic>
 
 namespace td {
 
 bool operator==(Timestamp a, Timestamp b) {
   return std::abs(a.at() - b.at()) < 1e-6;
 }
+namespace {
+std::atomic<double> time_diff;
+}
 double Time::now() {
+  return now_unadjusted() + time_diff.load(std::memory_order_relaxed);
+}
+
+double Time::now_unadjusted() {
   return Clocks::monotonic();
 }
 
+void Time::jump_in_future(double at) {
+  auto old_time_diff = time_diff.load();
+
+  while (true) {
+    auto diff = at - now();
+    if (diff < 0) {
+      return;
+    }
+    if (time_diff.compare_exchange_strong(old_time_diff, old_time_diff + diff)) {
+      return;
+    }
+  }
+}
+
 }  // namespace td