1 files changed, 50 insertions, 0 deletions
diff --git a/src/core/lib/gpr/tls_msvc.h b/src/core/lib/gpr/tls_msvc.h
new file mode 100644
index 0000000000..a6cc4174be
--- /dev/null
+++ b/src/core/lib/gpr/tls_msvc.h
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_GPR_TLS_MSVC_H
+#define GRPC_CORE_LIB_GPR_TLS_MSVC_H
+
+/** Thread local storage based on ms visual c compiler primitives.
+   #include tls.h to use this - and see that file for documentation */
+
+struct gpr_msvc_thread_local {
+  intptr_t value;
+};
+
+/** Use GPR_TLS_DECL to declare tls static variables outside a class */
+#define GPR_TLS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+/** Use GPR_TLS_CLASS_DECL to declare tls static variable members of a class.
+ *  GPR_TLS_CLASS_DEF needs to be called to define this member. */
+#define GPR_TLS_CLASS_DECL(name) \
+  static __declspec(thread) struct gpr_msvc_thread_local name
+
+#define GPR_TLS_CLASS_DEF(name) \
+  __declspec(thread) struct gpr_msvc_thread_local name = {0}
+
+#define gpr_tls_init(tls) \
+  do {                    \
+  } while (0)
+#define gpr_tls_destroy(tls) \
+  do {                       \
+  } while (0)
+#define gpr_tls_set(tls, new_value) (((tls)->value) = (new_value))
+#define gpr_tls_get(tls) ((tls)->value)
+
+#endif /* GRPC_CORE_LIB_GPR_TLS_MSVC_H */