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 #include <grpc/support/port_platform.h> 20 21 #include "src/core/lib/iomgr/port.h" 22 23 #ifdef GRPC_POSIX_WAKEUP_FD 24 25 #include <stddef.h> 26 #include "src/core/lib/iomgr/wakeup_fd_pipe.h" 27 #include "src/core/lib/iomgr/wakeup_fd_posix.h" 28 29 static const grpc_wakeup_fd_vtable* wakeup_fd_vtable = nullptr; 30 31 int grpc_allow_specialized_wakeup_fd = 1; 32 int grpc_allow_pipe_wakeup_fd = 1; 33 34 int has_real_wakeup_fd = 1; 35 int cv_wakeup_fds_enabled = 0; 36 grpc_wakeup_fd_global_init(void)37void grpc_wakeup_fd_global_init(void) { 38 if (grpc_allow_specialized_wakeup_fd && 39 grpc_specialized_wakeup_fd_vtable.check_availability()) { 40 wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable; 41 } else if (grpc_allow_pipe_wakeup_fd && 42 grpc_pipe_wakeup_fd_vtable.check_availability()) { 43 wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable; 44 } else { 45 has_real_wakeup_fd = 0; 46 } 47 } 48 grpc_wakeup_fd_global_destroy(void)49void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = nullptr; } 50 grpc_has_wakeup_fd(void)51int grpc_has_wakeup_fd(void) { return has_real_wakeup_fd; } 52 grpc_wakeup_fd_init(grpc_wakeup_fd * fd_info)53grpc_error* grpc_wakeup_fd_init(grpc_wakeup_fd* fd_info) { 54 return wakeup_fd_vtable->init(fd_info); 55 } 56 grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd * fd_info)57grpc_error* grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd* fd_info) { 58 return wakeup_fd_vtable->consume(fd_info); 59 } 60 grpc_wakeup_fd_wakeup(grpc_wakeup_fd * fd_info)61grpc_error* grpc_wakeup_fd_wakeup(grpc_wakeup_fd* fd_info) { 62 return wakeup_fd_vtable->wakeup(fd_info); 63 } 64 grpc_wakeup_fd_destroy(grpc_wakeup_fd * fd_info)65void grpc_wakeup_fd_destroy(grpc_wakeup_fd* fd_info) { 66 wakeup_fd_vtable->destroy(fd_info); 67 } 68 69 #endif /* GRPC_POSIX_WAKEUP_FD */ 70