22-2: Snapshot isolation with prioritized reads, KIKIMR-13910

Merge from trunk: r9171244, r9229795, r9244174, r9285534, r9300998, r9313872

REVIEW: 2435130
x-ydb-stable-ref: 9c878f6e7949737ee83323c98c1b7c64c372710e

5 files changed, 63 insertions, 0 deletions

diff --git a/library/cpp/actors/core/monotonic_provider.cpp b/library/cpp/actors/core/monotonic_provider.cpp
new file mode 100644
index 0000000000..fb3b656da6
--- /dev/null
+++ b/library/cpp/actors/core/monotonic_provider.cpp
@@ -0,0 +1,16 @@
+#include "monotonic_provider.h"
+
+namespace NActors {
+
+class TDefaultMonotonicTimeProvider : public IMonotonicTimeProvider {
+public:
+    TMonotonic Now() override {
+        return TMonotonic::Now();
+    }
+};
+
+TIntrusivePtr<IMonotonicTimeProvider> CreateDefaultMonotonicTimeProvider() {
+    return TIntrusivePtr<IMonotonicTimeProvider>(new TDefaultMonotonicTimeProvider);
+}
+
+} // namespace NActors
diff --git a/library/cpp/actors/core/monotonic_provider.h b/library/cpp/actors/core/monotonic_provider.h
new file mode 100644
index 0000000000..98e1203400
--- /dev/null
+++ b/library/cpp/actors/core/monotonic_provider.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "monotonic.h"
+
+namespace NActors {
+
+class IMonotonicTimeProvider : public TThrRefBase {
+public:
+    virtual TMonotonic Now() = 0;
+};
+
+TIntrusivePtr<IMonotonicTimeProvider> CreateDefaultMonotonicTimeProvider();
+
+} // namespace NActors
diff --git a/library/cpp/actors/core/ya.make b/library/cpp/actors/core/ya.make
index 880a9d00db..2979020d68 100644
--- a/library/cpp/actors/core/ya.make
+++ b/library/cpp/actors/core/ya.make
@@ -83,6 +83,8 @@ SRCS(
     mon_stats.h
     monotonic.cpp
     monotonic.h
+    monotonic_provider.cpp
+    monotonic_provider.h
     worker_context.cpp
     worker_context.h
     probes.cpp
diff --git a/library/cpp/actors/testlib/test_runtime.cpp b/library/cpp/actors/testlib/test_runtime.cpp
index 6fa25b9965..51d93ba6e9 100644
--- a/library/cpp/actors/testlib/test_runtime.cpp
+++ b/library/cpp/actors/testlib/test_runtime.cpp
@@ -233,6 +233,20 @@ namespace NActors {
         TTestActorRuntimeBase& Runtime;
     };
 
+    class TTestActorRuntimeBase::TMonotonicTimeProvider : public IMonotonicTimeProvider {
+    public:
+        TMonotonicTimeProvider(TTestActorRuntimeBase& runtime)
+            : Runtime(runtime)
+        { }
+
+        TMonotonic Now() override {
+            return Runtime.GetCurrentMonotonicTime();
+        }
+
+    private:
+        TTestActorRuntimeBase& Runtime;
+    };
+
     class TTestActorRuntimeBase::TSchedulerThreadStub : public ISchedulerThread {
     public:
         TSchedulerThreadStub(TTestActorRuntimeBase* runtime, TTestActorRuntimeBase::TNodeDataBase* node)
@@ -470,6 +484,7 @@ namespace NActors {
         , NeedMonitoring(false)
         , RandomProvider(CreateDeterministicRandomProvider(DefaultRandomSeed))
         , TimeProvider(new TTimeProvider(*this))
+        , MonotonicTimeProvider(new TMonotonicTimeProvider(*this))
         , ShouldContinue()
         , CurrentTimestamp(0)
         , DispatchTimeout(DEFAULT_DISPATCH_TIMEOUT)
@@ -797,6 +812,12 @@ namespace NActors {
         return TInstant::MicroSeconds(CurrentTimestamp);
     }
 
+    TMonotonic TTestActorRuntimeBase::GetCurrentMonotonicTime() const {
+        TGuard<TMutex> guard(Mutex);
+        Y_VERIFY(!UseRealThreads);
+        return TMonotonic::MicroSeconds(CurrentTimestamp);
+    }
+
     void TTestActorRuntimeBase::UpdateCurrentTime(TInstant newTime) {
         static int counter = 0;
         ++counter;
@@ -823,6 +844,11 @@ namespace NActors {
         return TimeProvider;
     }
 
+    TIntrusivePtr<IMonotonicTimeProvider> TTestActorRuntimeBase::GetMonotonicTimeProvider() {
+        Y_VERIFY(!UseRealThreads);
+        return MonotonicTimeProvider;
+    }
+
     ui32 TTestActorRuntimeBase::GetNodeId(ui32 index) const {
         Y_VERIFY(index < NodeCount);
         return FirstNodeId + index;
diff --git a/library/cpp/actors/testlib/test_runtime.h b/library/cpp/actors/testlib/test_runtime.h
index 26e3b45c98..c14cde1b66 100644
--- a/library/cpp/actors/testlib/test_runtime.h
+++ b/library/cpp/actors/testlib/test_runtime.h
@@ -6,6 +6,7 @@
 #include <library/cpp/actors/core/events.h>
 #include <library/cpp/actors/core/executor_thread.h>
 #include <library/cpp/actors/core/mailbox.h>
+#include <library/cpp/actors/core/monotonic_provider.h>
 #include <library/cpp/actors/util/should_continue.h>
 #include <library/cpp/actors/interconnect/poller_tcp.h>
 #include <library/cpp/actors/interconnect/mock/ic_mock.h>
@@ -188,6 +189,7 @@ namespace NActors {
         class TSchedulerThreadStub;
         class TExecutorPoolStub;
         class TTimeProvider;
+        class TMonotonicTimeProvider;
 
         enum class EEventAction {
             PROCESS,
@@ -229,7 +231,9 @@ namespace NActors {
         void SetLogBackend(const TAutoPtr<TLogBackend> logBackend);
         void SetLogPriority(NActors::NLog::EComponent component, NActors::NLog::EPriority priority);
         TIntrusivePtr<ITimeProvider> GetTimeProvider();
+        TIntrusivePtr<IMonotonicTimeProvider> GetMonotonicTimeProvider();
         TInstant GetCurrentTime() const;
+        TMonotonic GetCurrentMonotonicTime() const;
         void UpdateCurrentTime(TInstant newTime);
         void AdvanceCurrentTime(TDuration duration);
         void AddLocalService(const TActorId& actorId, const TActorSetupCmd& cmd, ui32 nodeIndex = 0);
@@ -534,6 +538,7 @@ namespace NActors {
 
         TIntrusivePtr<IRandomProvider> RandomProvider;
         TIntrusivePtr<ITimeProvider> TimeProvider;
+        TIntrusivePtr<IMonotonicTimeProvider> MonotonicTimeProvider;
 
     protected:
         struct TNodeDataBase: public TThrRefBase {