3 * Copyright 2015 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #ifndef GRPC_SUPPORT_CPU_H
20 #define GRPC_SUPPORT_CPU_H
22 #include <grpc/support/port_platform.h>
28 /** Interface providing CPU information for currently running system */
30 /** Return the number of CPU cores on the current system. Will return 0 if
31 the information is not available. */
32 GPRAPI unsigned gpr_cpu_num_cores(void);
34 /** Return the CPU on which the current thread is executing; N.B. This should
35 be considered advisory only - it is possible that the thread is switched
36 to a different CPU at any time. Returns a value in range
37 [0, gpr_cpu_num_cores() - 1] */
38 GPRAPI unsigned gpr_cpu_current_cpu(void);
44 #endif /* GRPC_SUPPORT_CPU_H */