--- /dev/null
+/*
+ *
+ * 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_SUPPORT_CPU_H
+#define GRPC_SUPPORT_CPU_H
+
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Interface providing CPU information for currently running system */
+
+/** Return the number of CPU cores on the current system. Will return 0 if
+ the information is not available. */
+GPRAPI unsigned gpr_cpu_num_cores(void);
+
+/** Return the CPU on which the current thread is executing; N.B. This should
+ be considered advisory only - it is possible that the thread is switched
+ to a different CPU at any time. Returns a value in range
+ [0, gpr_cpu_num_cores() - 1] */
+GPRAPI unsigned gpr_cpu_current_cpu(void);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* GRPC_SUPPORT_CPU_H */