| /* |
| * |
| * 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. |
| * |
| */ |
| |
| #include "src/core/lib/iomgr/port.h" |
| |
| #ifdef GRPC_POSIX_WAKEUP_FD |
| |
| #include <stddef.h> |
| #include "src/core/lib/iomgr/wakeup_fd_cv.h" |
| #include "src/core/lib/iomgr/wakeup_fd_pipe.h" |
| #include "src/core/lib/iomgr/wakeup_fd_posix.h" |
| |
| extern grpc_wakeup_fd_vtable grpc_cv_wakeup_fd_vtable; |
| static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL; |
| |
| int grpc_allow_specialized_wakeup_fd = 1; |
| int grpc_allow_pipe_wakeup_fd = 1; |
| |
| int has_real_wakeup_fd = 1; |
| int cv_wakeup_fds_enabled = 0; |
| |
| void grpc_wakeup_fd_global_init(void) { |
| if (grpc_allow_specialized_wakeup_fd && |
| grpc_specialized_wakeup_fd_vtable.check_availability()) { |
| wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable; |
| } else if (grpc_allow_pipe_wakeup_fd && |
| grpc_pipe_wakeup_fd_vtable.check_availability()) { |
| wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable; |
| } else { |
| has_real_wakeup_fd = 0; |
| } |
| } |
| |
| void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = NULL; } |
| |
| int grpc_has_wakeup_fd(void) { return has_real_wakeup_fd; } |
| |
| int grpc_cv_wakeup_fds_enabled(void) { return cv_wakeup_fds_enabled; } |
| |
| void grpc_enable_cv_wakeup_fds(int enable) { cv_wakeup_fds_enabled = enable; } |
| |
| grpc_error *grpc_wakeup_fd_init(grpc_wakeup_fd *fd_info) { |
| if (cv_wakeup_fds_enabled) { |
| return grpc_cv_wakeup_fd_vtable.init(fd_info); |
| } |
| return wakeup_fd_vtable->init(fd_info); |
| } |
| |
| grpc_error *grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd *fd_info) { |
| if (cv_wakeup_fds_enabled) { |
| return grpc_cv_wakeup_fd_vtable.consume(fd_info); |
| } |
| return wakeup_fd_vtable->consume(fd_info); |
| } |
| |
| grpc_error *grpc_wakeup_fd_wakeup(grpc_wakeup_fd *fd_info) { |
| if (cv_wakeup_fds_enabled) { |
| return grpc_cv_wakeup_fd_vtable.wakeup(fd_info); |
| } |
| return wakeup_fd_vtable->wakeup(fd_info); |
| } |
| |
| void grpc_wakeup_fd_destroy(grpc_wakeup_fd *fd_info) { |
| if (cv_wakeup_fds_enabled) { |
| grpc_cv_wakeup_fd_vtable.destroy(fd_info); |
| } else { |
| wakeup_fd_vtable->destroy(fd_info); |
| } |
| } |
| |
| #endif /* GRPC_POSIX_WAKEUP_FD */ |