From ff0a1314620543ee591deba8bc3bef91ea0964a0 Mon Sep 17 00:00:00 2001
From: Jan Kotas <jkotas@microsoft.com>
Date: Fri, 22 Mar 2024 22:17:13 -0700
Subject: [PATCH] Delete unused Thread::m_maxThreadCount (#100171)

---
 src/coreclr/vm/threads.cpp |  3 ---
 src/coreclr/vm/threads.h   | 11 -----------
 2 files changed, 14 deletions(-)

diff --git a/src/coreclr/vm/threads.cpp b/src/coreclr/vm/threads.cpp
index bc7a06af0d1b0..d2e7a389adf12 100644
--- a/src/coreclr/vm/threads.cpp
+++ b/src/coreclr/vm/threads.cpp
@@ -5153,7 +5153,6 @@ Thread::ApartmentState Thread::SetApartment(ApartmentState state)
 ThreadStore::ThreadStore()
            : m_Crst(CrstThreadStore, (CrstFlags) (CRST_UNSAFE_ANYMODE | CRST_DEBUGGER_THREAD)),
              m_ThreadCount(0),
-             m_MaxThreadCount(0),
              m_UnstartedThreadCount(0),
              m_BackgroundThreadCount(0),
              m_PendingThreadCount(0),
@@ -5272,8 +5271,6 @@ void ThreadStore::AddThread(Thread *newThread)
     s_pThreadStore->m_ThreadList.InsertTail(newThread);
 
     s_pThreadStore->m_ThreadCount++;
-    if (s_pThreadStore->m_MaxThreadCount < s_pThreadStore->m_ThreadCount)
-        s_pThreadStore->m_MaxThreadCount = s_pThreadStore->m_ThreadCount;
 
     if (newThread->IsUnstarted())
         s_pThreadStore->m_UnstartedThreadCount++;
diff --git a/src/coreclr/vm/threads.h b/src/coreclr/vm/threads.h
index c4bc4208121df..166f871c44860 100644
--- a/src/coreclr/vm/threads.h
+++ b/src/coreclr/vm/threads.h
@@ -4210,26 +4210,15 @@ class ThreadStore
     // m_DeadThreadCount is the subset of m_ThreadCount which have died.  The Win32
     // thread has disappeared, but something (like the exposed object) has kept the
     // refcount non-zero so we can't destruct yet.
-    //
-    // m_MaxThreadCount is the maximum value of m_ThreadCount. ie. the largest number
-    // of simultaneously active threads
 
 protected:
     LONG        m_ThreadCount;
-    LONG        m_MaxThreadCount;
 public:
     LONG        ThreadCountInEE ()
     {
         LIMITED_METHOD_CONTRACT;
         return m_ThreadCount;
     }
-#if defined(_DEBUG) || defined(DACCESS_COMPILE)
-    LONG        MaxThreadCountInEE ()
-    {
-        LIMITED_METHOD_CONTRACT;
-        return m_MaxThreadCount;
-    }
-#endif
 private:
     LONG        m_UnstartedThreadCount;
     LONG        m_BackgroundThreadCount;