Jacek Caban : urlmon: Use TLS_OUT_OF_INDEXES as invalid TLS value.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 08d8a5ea259cd93f3f0fae3d467cd4524b550abd
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=08d8a5ea259cd93f3f0fae3d467cd4524b550abd

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Sun May 24 23:16:21 2009 +0200

urlmon: Use TLS_OUT_OF_INDEXES as invalid TLS value.

---

 dlls/urlmon/urlmon_main.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/dlls/urlmon/urlmon_main.c b/dlls/urlmon/urlmon_main.c
index 3203753..6e51db5 100644
--- a/dlls/urlmon/urlmon_main.c
+++ b/dlls/urlmon/urlmon_main.c
@@ -36,7 +36,7 @@ LONG URLMON_refCount = 0;
 
 HINSTANCE URLMON_hInstance = 0;
 static HMODULE hCabinet = NULL;
-static DWORD urlmon_tls;
+static DWORD urlmon_tls = TLS_OUT_OF_INDEXES;
 
 static void init_session(BOOL);
 
@@ -56,9 +56,12 @@ tls_data_t *get_tls_data(void)
 {
     tls_data_t *data;
 
-    if(!urlmon_tls) {
+    if(urlmon_tls == TLS_OUT_OF_INDEXES) {
         DWORD tls = TlsAlloc();
-        tls = InterlockedCompareExchange((LONG*)&urlmon_tls, tls, 0);
+        if(tls == TLS_OUT_OF_INDEXES)
+            return NULL;
+
+        tls = InterlockedCompareExchange((LONG*)&urlmon_tls, tls, TLS_OUT_OF_INDEXES);
         if(tls != urlmon_tls)
             TlsFree(tls);
     }
@@ -83,7 +86,7 @@ static void free_tls_list(void)
 {
     tls_data_t *data;
 
-    if(!urlmon_tls)
+    if(urlmon_tls == TLS_OUT_OF_INDEXES)
         return;
 
     while(!list_empty(&tls_list)) {
@@ -99,7 +102,7 @@ static void detach_thread(void)
 {
     tls_data_t *data;
 
-    if(!urlmon_tls)
+    if(urlmon_tls == TLS_OUT_OF_INDEXES)
         return;
 
     data = TlsGetValue(urlmon_tls);