win32: Switch thread abstraction to us TLS variable internally

We already depend on working __thread support for coroutines, so this complication here is no longer needed.

Signed-off-by Jan Kiszka <[email protected]>

---

Post-1.3 material.

 qemu-thread-win32.c |   24 ++++++------------------
 1 files changed, 6 insertions(+), 18 deletions(-)

qemu-thread-win32.c +4 -3

index 4b3db60..6499ce9 100644
@@ -239,7 +239,7 @@ struct QemuThreadData {
     CRITICAL_SECTION  cs;
 };
 
-static int qemu_thread_tls_index = TLS_OUT_OF_INDEXES;
+static __thread QemuThreadData *qemu_thread_data;
 
 static unsigned __stdcall win32_start_routine(void *arg)
 {

@@ -251,14 +251,15 @@ static unsigned __stdcall
 win32_start_routine(void *arg)
         g_free(data);
         data = NULL;
     }
-    TlsSetValue(qemu_thread_tls_index, data);
+    qemu_thread_data = data;
     qemu_thread_exit(start_routine(thread_arg));
     abort();
 }
 
 void qemu_thread_exit(void *arg)
 {
-    QemuThreadData *data = TlsGetValue(qemu_thread_tls_index);
+    QemuThreadData *data = qemu_thread_data;
+
     if (data) {
         assert(data->mode != QEMU_THREAD_DETACHED);

         data->ret = arg;

qemu-thread-win32.c +2 -16

@@ -298,25 +299,13 @@ void *qemu_thread_join(QemuThread *thread)
     return ret;
 }
 
-static inline void qemu_thread_init(void)
-{
-    if (qemu_thread_tls_index == TLS_OUT_OF_INDEXES) {
-        qemu_thread_tls_index = TlsAlloc();
-        if (qemu_thread_tls_index == TLS_OUT_OF_INDEXES) {
-            error_exit(ERROR_NO_SYSTEM_RESOURCES, __func__);
-        }
-    }
-}
-
-
 void qemu_thread_create(QemuThread *thread,
                        void *(*start_routine)(void *),
                        void *arg, int mode)
 {
     HANDLE hThread;
-
     struct QemuThreadData *data;
-    qemu_thread_init();
+
     data = g_malloc(sizeof *data);
     data->start_routine = start_routine;
     data->arg = arg;

@@ -338,8 +327,7 @@ void qemu_thread_create(QemuThread *thread,
 
 void qemu_thread_get_self(QemuThread *thread)
 {
-    qemu_thread_init();
-    thread->data = TlsGetValue(qemu_thread_tls_index);
+    thread->data = qemu_thread_data;
     thread->tid = GetCurrentThreadId();
 }
 
--

1.7.3.4