From fdcd769a821adb03b3cf79bb873fe46dfeb02e55 Mon Sep 17 00:00:00 2001
From: Per Larsson <p3rl@protonmail.com>
Date: Tue, 7 Dec 2021 11:06:22 +0100
Subject: Added support for time based eviction policy in structured cache.

---
 zenstore/gc.cpp | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

(limited to 'zenstore/gc.cpp')

diff --git a/zenstore/gc.cpp b/zenstore/gc.cpp
index b18a577bf..5aff20e7a 100644
--- a/zenstore/gc.cpp
+++ b/zenstore/gc.cpp
@@ -47,14 +47,17 @@ SaveCompactBinaryObject(const std::filesystem::path& Path, const CbObject& Objec
 
 struct GcContext::GcState
 {
-	CasChunkSet m_CasChunks;
-	CasChunkSet m_CidChunks;
-	bool		m_DeletionMode		 = true;
-	bool		m_ContainerGcEnabled = false;
+	CasChunkSet		   m_CasChunks;
+	CasChunkSet		   m_CidChunks;
+	GcClock::TimePoint m_GcTime;
+	GcClock::Duration  m_MaxCacheDuration	= std::chrono::hours(24);
+	bool			   m_DeletionMode		= true;
+	bool			   m_ContainerGcEnabled = false;
 };
 
-GcContext::GcContext() : m_State(std::make_unique<GcState>())
+GcContext::GcContext(GcClock::TimePoint Time) : m_State(std::make_unique<GcState>())
 {
+	m_State->m_GcTime = Time;
 }
 
 GcContext::~GcContext()
@@ -115,6 +118,24 @@ GcContext::SetContainerGcEnabled(bool NewState)
 	m_State->m_ContainerGcEnabled = NewState;
 }
 
+GcClock::TimePoint
+GcContext::Time() const
+{
+	return m_State->m_GcTime;
+}
+
+GcClock::Duration
+GcContext::MaxCacheDuration() const
+{
+	return m_State->m_MaxCacheDuration;
+}
+
+void
+GcContext::MaxCacheDuration(GcClock::Duration Duration)
+{
+	m_State->m_MaxCacheDuration = Duration;
+}
+
 //////////////////////////////////////////////////////////////////////////
 
 GcContributor::GcContributor(CasGc& Gc) : m_Gc(Gc)
-- 
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