From e3dcfcaa3eeb261a317fdc5c476b8793129edbd1 Mon Sep 17 00:00:00 2001
From: Ulrich Weigand <weigand@informatik.uni-erlangen.de>
Date: Thu, 1 Apr 1999 10:05:40 +0000
Subject: [PATCH] Made Universal Thunk list per-process, not system global.

---
 include/process.h |  3 ++-
 relay32/utthunk.c | 23 +++++++++++------------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/include/process.h b/include/process.h
index 18098e1f43d..e8d55c4c138 100644
--- a/include/process.h
+++ b/include/process.h
@@ -12,6 +12,7 @@
 
 struct _NE_MODULE;
 struct _THREAD_ENTRY;
+struct _UTINFO;
 
 /* Current Process pseudo-handle - Returned by GetCurrentProcess*/
 #define CURRENT_PROCESS_PSEUDOHANDLE ((HANDLE)0x7fffffff)
@@ -85,7 +86,7 @@ typedef struct _PDB
     WORD             env_selector;     /* b4 Selector to process environment */
     WORD             error_mode;       /* b6 Error mode */
     HANDLE           load_done_evt;    /* b8 Event for process loading done */
-    DWORD            unknown7;         /* bc Unknown */
+    struct _UTINFO  *UTState;          /* bc Head of Univeral Thunk list */
     DWORD            unknown8;         /* c0 Unknown (NT) */
     LCID             locale;           /* c4 Locale to be queried by GetThreadLocale (NT) */
     /* The following are Wine-specific fields */
diff --git a/relay32/utthunk.c b/relay32/utthunk.c
index 18b0ed01ed7..9be4261dcd3 100644
--- a/relay32/utthunk.c
+++ b/relay32/utthunk.c
@@ -9,6 +9,7 @@
 #include "module.h"
 #include "selectors.h"
 #include "callback.h"
+#include "process.h"
 #include "debug.h"
 #include "debugstr.h"
 
@@ -38,9 +39,9 @@ typedef struct
 
 #pragma pack(4)
 
-typedef struct tagUTINFO
+typedef struct _UTINFO
 {
-    struct tagUTINFO  *next;
+    struct _UTINFO    *next;
     HMODULE            hModule;
     HMODULE16          hModule16;
     
@@ -49,8 +50,6 @@ typedef struct tagUTINFO
 
 } UTINFO;
 
-static UTINFO *utAnchor;
-
 BOOL WINAPI UTRegister( HMODULE hModule, LPSTR lpsz16BITDLL, 
                         LPSTR lpszInitName, LPSTR lpszProcName,
                         FARPROC *ppfn32Thunk, FARPROC pfnUT32CallBack, 
@@ -158,8 +157,8 @@ static UTINFO *UTAlloc( HMODULE hModule, HMODULE16 hModule16,
     ut->ut32.jmp       = 0xe9;
     ut->ut32.utglue32  = (DWORD)UTGlue32 - ((DWORD)&ut->ut32.utglue32 + sizeof(DWORD));
 
-    ut->next = utAnchor;
-    utAnchor = ut;
+    ut->next = PROCESS_Current()->UTState;
+    PROCESS_Current()->UTState = ut;
 
     return ut;
 }
@@ -171,7 +170,7 @@ static void UTFree( UTINFO *ut )
 {
     UTINFO **ptr;
 
-    for ( ptr = &utAnchor; *ptr; ptr = &(*ptr)->next )
+    for ( ptr = &PROCESS_Current()->UTState; *ptr; ptr = &(*ptr)->next )
         if ( *ptr == ut )
         {
             *ptr = ut->next;
@@ -188,7 +187,7 @@ static UTINFO *UTFind( HMODULE hModule )
 {
     UTINFO *ut;
 
-    for ( ut = utAnchor; ut; ut =ut->next )
+    for ( ut = PROCESS_Current()->UTState; ut; ut =ut->next )
         if ( ut->hModule == hModule )
             break;
 
@@ -216,12 +215,12 @@ BOOL WINAPI UTRegister( HMODULE hModule, LPSTR lpsz16BITDLL,
 
     /* Allocate UTINFO struct */
 
-    HeapLock( SegptrHeap );  /* FIXME: a bit overkill */
+    EnterCriticalSection( &PROCESS_Current()->crit_section );
     if ( (ut = UTFind( hModule )) != NULL )
         ut = NULL;
     else
         ut = UTAlloc( hModule, hModule16, target16, pfnUT32CallBack );
-    HeapUnlock( SegptrHeap );
+    LeaveCriticalSection( &PROCESS_Current()->crit_section );
 
     if ( !ut )
     {
@@ -261,14 +260,14 @@ VOID WINAPI UTUnRegister( HMODULE hModule )
     UTINFO *ut;
     HMODULE16 hModule16 = 0;
 
-    HeapLock( SegptrHeap );  /* FIXME: a bit overkill */
+    EnterCriticalSection( &PROCESS_Current()->crit_section );
     ut = UTFind( hModule );
     if ( !ut )
     {
         hModule16 = ut->hModule16;
         UTFree( ut );
     }
-    HeapUnlock( SegptrHeap );
+    LeaveCriticalSection( &PROCESS_Current()->crit_section );
 
     if ( hModule16 ) 
         FreeLibrary16( hModule16 );