From b47a36a47b89e1d768176c2c1cdca8df30c612b5 Mon Sep 17 00:00:00 2001
From: "Pierre-Loup A. Griffais" <git@plagman.net>
Date: Fri, 21 Aug 2026 15:47:49 -0700
Subject: [PATCH] DiskCache: add some SHM stats

---
 FEXCore/Source/Interface/Core/Core.cpp   | 3 +++
 FEXCore/include/FEXCore/Utils/SHMStats.h | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/FEXCore/Source/Interface/Core/Core.cpp b/FEXCore/Source/Interface/Core/Core.cpp
index f62aa5771..366986f53 100644
--- a/FEXCore/Source/Interface/Core/Core.cpp
+++ b/FEXCore/Source/Interface/Core/Core.cpp
@@ -865,6 +865,7 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
   bool DiskCacheHitRelocationsApplied = false;
   bool LoadDiskCacheCode = true;
   if (Region && Region->FileStartVA != 0) {
+    FEXCORE_PROFILE_ACCUMULATION(Thread, AccumulatedDiskCacheLookupTime);
     Hit = DiskCache.Lookup(Thread, *Region, GuestRIP);
     if (Hit) {
       DiskCacheHitRelocationsApplied = CodeCache.ApplyCodeRelocations(GuestRIP, std::as_writable_bytes(Hit->HostCode), Hit->Relocations, 0, false);
@@ -888,10 +889,12 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
           }
 
           uint64_t ModuleOffset = GuestRIP - Region->FileStartVA;
+          FEXCORE_PROFILE_INSTANT_INCREMENT(Thread, AccumulatedDiskCacheHitCount, 1);
           return reinterpret_cast<uintptr_t>(LoadedCode.EntryPoints[ModuleOffset]);
         }
       }
     }
+    FEXCORE_PROFILE_INSTANT_INCREMENT(Thread, AccumulatedDiskCacheMissCount, 1);
   }
 
   // Accumulate a JIT count now, as even if another thread raced us, it should count as a compile.
diff --git a/FEXCore/include/FEXCore/Utils/SHMStats.h b/FEXCore/include/FEXCore/Utils/SHMStats.h
index e5f07cc51..c5844fe10 100644
--- a/FEXCore/include/FEXCore/Utils/SHMStats.h
+++ b/FEXCore/include/FEXCore/Utils/SHMStats.h
@@ -70,6 +70,11 @@ struct ThreadStats {
   uint64_t AccumulatedCacheWriteLockTime;
 
   uint64_t AccumulatedJITCount;
+
+  uint64_t AccumulatedDiskCacheHitCount;
+  uint64_t AccumulatedDiskCacheMissCount;
+  uint64_t AccumulatedDiskCacheLookupTime;
+  uint64_t Padding;
 };
 
 // Ensure 16-byte alignment to take advantage of ARM single-copy atomicity.