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_SRC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H 20 #define GRPC_SRC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H 21 22 #include <grpc/support/port_platform.h> 23 #include <grpc/support/sync.h> 24 25 #include "src/core/lib/iomgr/port.h" 26 27 #ifdef GRPC_WINSOCK_SOCKET 28 #include "src/core/lib/iomgr/socket_windows.h" 29 30 // There isn't really any such thing as a pollset under Windows, due to the 31 // nature of the IO completion ports. A Windows "pollset" is merely a mutex 32 // used to synchronize with the IOCP, and workers are condition variables 33 // used to block threads until work is ready. 34 35 typedef enum { 36 GRPC_POLLSET_WORKER_LINK_POLLSET = 0, 37 GRPC_POLLSET_WORKER_LINK_GLOBAL, 38 GRPC_POLLSET_WORKER_LINK_TYPES 39 } grpc_pollset_worker_link_type; 40 41 typedef struct grpc_pollset_worker_link { 42 struct grpc_pollset_worker* next; 43 struct grpc_pollset_worker* prev; 44 } grpc_pollset_worker_link; 45 46 struct grpc_pollset; 47 typedef struct grpc_pollset grpc_pollset; 48 49 typedef struct grpc_pollset_worker { 50 gpr_cv cv; 51 int kicked; 52 struct grpc_pollset* pollset; 53 grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES]; 54 } grpc_pollset_worker; 55 56 struct grpc_pollset { 57 int shutting_down; 58 int kicked_without_pollers; 59 int is_iocp_worker; 60 grpc_pollset_worker root_worker; 61 grpc_closure* on_shutdown; 62 }; 63 64 void grpc_pollset_global_init(void); 65 void grpc_pollset_global_shutdown(void); 66 67 #endif 68 69 #endif // GRPC_SRC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H 70