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Diffstat (limited to 'src/gallium/state_trackers/wgl/stw_tls.c')
-rw-r--r--src/gallium/state_trackers/wgl/stw_tls.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/wgl/stw_tls.c b/src/gallium/state_trackers/wgl/stw_tls.c
new file mode 100644
index 0000000000..4bd6a9289c
--- /dev/null
+++ b/src/gallium/state_trackers/wgl/stw_tls.c
@@ -0,0 +1,139 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include <windows.h>
+
+#include "pipe/p_compiler.h"
+#include "util/u_memory.h"
+#include "stw_tls.h"
+
+static DWORD tlsIndex = TLS_OUT_OF_INDEXES;
+
+boolean
+stw_tls_init(void)
+{
+ tlsIndex = TlsAlloc();
+ if (tlsIndex == TLS_OUT_OF_INDEXES) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static INLINE struct stw_tls_data *
+stw_tls_data_create()
+{
+ struct stw_tls_data *data;
+
+ data = CALLOC_STRUCT(stw_tls_data);
+ if (!data)
+ goto no_data;
+
+ data->hCallWndProcHook = SetWindowsHookEx(WH_CALLWNDPROC,
+ stw_call_window_proc,
+ NULL,
+ GetCurrentThreadId());
+ if(data->hCallWndProcHook == NULL)
+ goto no_hook;
+
+ TlsSetValue(tlsIndex, data);
+
+ return data;
+
+no_hook:
+ FREE(data);
+no_data:
+ return NULL;
+}
+
+boolean
+stw_tls_init_thread(void)
+{
+ struct stw_tls_data *data;
+
+ if (tlsIndex == TLS_OUT_OF_INDEXES) {
+ return FALSE;
+ }
+
+ data = stw_tls_data_create();
+ if(!data)
+ return FALSE;
+
+ return TRUE;
+}
+
+void
+stw_tls_cleanup_thread(void)
+{
+ struct stw_tls_data *data;
+
+ if (tlsIndex == TLS_OUT_OF_INDEXES) {
+ return;
+ }
+
+ data = (struct stw_tls_data *) TlsGetValue(tlsIndex);
+ if(data) {
+ TlsSetValue(tlsIndex, NULL);
+
+ if(data->hCallWndProcHook) {
+ UnhookWindowsHookEx(data->hCallWndProcHook);
+ data->hCallWndProcHook = NULL;
+ }
+
+ FREE(data);
+ }
+}
+
+void
+stw_tls_cleanup(void)
+{
+ if (tlsIndex != TLS_OUT_OF_INDEXES) {
+ TlsFree(tlsIndex);
+ tlsIndex = TLS_OUT_OF_INDEXES;
+ }
+}
+
+struct stw_tls_data *
+stw_tls_get_data(void)
+{
+ struct stw_tls_data *data;
+
+ if (tlsIndex == TLS_OUT_OF_INDEXES) {
+ return NULL;
+ }
+
+ data = (struct stw_tls_data *) TlsGetValue(tlsIndex);
+ if(!data) {
+ /* DllMain is called with DLL_THREAD_ATTACH only by threads created after
+ * the DLL is loaded by the process */
+ data = stw_tls_data_create();
+ if(!data)
+ return NULL;
+ }
+
+ return data;
+}