1 files changed, 46 insertions, 0 deletions
diff --git a/gfx/angle/src/common/tls.h b/gfx/angle/src/common/tls.h
new file mode 100755
index 000000000..ca9e07ab7
--- /dev/null
+++ b/gfx/angle/src/common/tls.h
@@ -0,0 +1,46 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// tls.h: Simple cross-platform interface for thread local storage.
+
+#ifndef COMMON_TLS_H_
+#define COMMON_TLS_H_
+
+#include "common/platform.h"
+
+#ifdef ANGLE_PLATFORM_WINDOWS
+
+// TLS does not exist for Windows Store and needs to be emulated
+#   ifdef ANGLE_ENABLE_WINDOWS_STORE
+#       ifndef TLS_OUT_OF_INDEXES
+#           define TLS_OUT_OF_INDEXES static_cast<DWORD>(0xFFFFFFFF)
+#       endif
+#       ifndef CREATE_SUSPENDED
+#           define CREATE_SUSPENDED 0x00000004
+#       endif
+#   endif
+    typedef DWORD TLSIndex;
+#   define TLS_INVALID_INDEX (TLS_OUT_OF_INDEXES)
+#elif defined(ANGLE_PLATFORM_POSIX)
+#   include <pthread.h>
+#   include <semaphore.h>
+#   include <errno.h>
+    typedef pthread_key_t TLSIndex;
+#   define TLS_INVALID_INDEX (static_cast<TLSIndex>(-1))
+#else
+#   error Unsupported platform.
+#endif
+
+// TODO(kbr): for POSIX platforms this will have to be changed to take
+// in a destructor function pointer, to allow the thread-local storage
+// to be properly deallocated upon thread exit.
+TLSIndex CreateTLSIndex();
+bool DestroyTLSIndex(TLSIndex index);
+
+bool SetTLSValue(TLSIndex index, void *value);
+void *GetTLSValue(TLSIndex index);
+
+#endif // COMMON_TLS_H_