diff --git a/vnr/texthook/host/avl_p.h b/vnr/texthook/host/avl_p.h
index b37800e..5f06449 100644
--- a/vnr/texthook/host/avl_p.h
+++ b/vnr/texthook/host/avl_p.h
@@ -144,7 +144,7 @@ protected:
   fCopy fCpy;
   fLength fLen;
 
-//public:
+public:
   // - Construction -
   AVLTree() {}
 
diff --git a/vnr/texthook/host/hookman.cc b/vnr/texthook/host/hookman.cc
index 93512b0..97abda6 100644
--- a/vnr/texthook/host/hookman.cc
+++ b/vnr/texthook/host/hookman.cc
@@ -208,6 +208,15 @@ HookManager::~HookManager()
   //DeleteCriticalSection(&hmcs);
 }
 
+TextThread *HookManager::FindSingle(DWORD pid, DWORD hook, DWORD retn, DWORD split)
+{
+  if (pid == 0)
+    return thread_table->FindThread(0);
+  ThreadParameter tp = {pid, hook, retn, split};
+  TreeNode<ThreadParameter *,DWORD> *node = Search(&tp);
+  return node ? thread_table->FindThread(node->data) : nullptr;
+}
+
 TextThread *HookManager::FindSingle(DWORD number)
 { return (number & 0x80008000) ? nullptr : thread_table->FindThread(number); }
 
@@ -698,6 +707,8 @@ ProcessRecord *HookManager::GetProcessRecord(DWORD pid)
   //return pr;
 }
 
+DWORD HookManager::GetCurrentPID() { return current_pid; }
+
 HANDLE HookManager::GetCmdHandleByPID(DWORD pid)
 {
   HM_LOCK;
@@ -723,6 +734,8 @@ MK_BASIC_TYPE(LPVOID)
 //  return hash;
 //}
 
+DWORD  GetCurrentPID() { return ::man->GetCurrentPID(); }
+
 HANDLE  GetCmdHandleByPID(DWORD pid) { return ::man->GetCmdHandleByPID(pid); }
 
 //void AddLink(WORD from, WORD to) { ::man->AddLink(from, to); }
diff --git a/vnr/texthook/host/hookman.h b/vnr/texthook/host/hookman.h
index 4d1b71c..b54abcf 100644
--- a/vnr/texthook/host/hookman.h
+++ b/vnr/texthook/host/hookman.h
@@ -46,8 +46,10 @@ public:
   HookManager();
   ~HookManager();
   // jichi 12/26/2013: remove virtual modifiers
+  TextThread *FindSingle(DWORD pid, DWORD hook, DWORD retn, DWORD split);
   TextThread *FindSingle(DWORD number);
   ProcessRecord *GetProcessRecord(DWORD pid);
+  DWORD GetProcessIDByPath(LPCWSTR str); // private
   void RemoveSingleThread(DWORD number);
   //void LockHookman();
   //void UnlockHookman();
@@ -73,6 +75,7 @@ public:
   void UnRegisterProcess(DWORD pid);
   //void SetName(DWORD);
 
+  DWORD GetCurrentPID(); // private
   HANDLE GetCmdHandleByPID(DWORD pid);
 
   ConsoleCallback RegisterConsoleCallback(ConsoleCallback cf)