1 /* 2 * 3 * Copyright 2015 gRPC authors. 4 * 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 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 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. 16 * 17 */ 18 19 #ifndef GRPC_SUPPORT_CPU_H 20 #define GRPC_SUPPORT_CPU_H 21 22 #include <grpc/support/port_platform.h> 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 /** Interface providing CPU information for currently running system */ 29 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); 33 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); 39 40 #ifdef __cplusplus 41 } // extern "C" 42 #endif 43 44 #endif /* GRPC_SUPPORT_CPU_H */ 45
