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_IOCP_WINDOWS_H
20 #define GRPC_SRC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
21 
22 #include <grpc/support/port_platform.h>
23 
24 #include <grpc/support/sync.h>
25 
26 #include "src/core/lib/iomgr/port.h"
27 
28 #ifdef GRPC_WINSOCK_SOCKET
29 
30 #include "src/core/lib/iomgr/exec_ctx.h"
31 #include "src/core/lib/iomgr/socket_windows.h"
32 
33 typedef enum {
34   GRPC_IOCP_WORK_WORK,
35   GRPC_IOCP_WORK_TIMEOUT,
36   GRPC_IOCP_WORK_KICK
37 } grpc_iocp_work_status;
38 
39 grpc_iocp_work_status grpc_iocp_work(grpc_core::Timestamp deadline);
40 void grpc_iocp_init(void);
41 void grpc_iocp_kick(void);
42 void grpc_iocp_flush(void);
43 void grpc_iocp_shutdown(void);
44 void grpc_iocp_add_socket(grpc_winsocket*);
45 
46 // Register that this socket has started shutting down.
47 // This prevents gRPC from completing its own shutdown until this socket's
48 // shutdown is finished. IOCP must continue doing work until all such sockets
49 // have finished shutting down. The socket's state_mu must be locked.
50 void grpc_iocp_register_socket_shutdown_socket_locked(grpc_winsocket* socket);
51 
52 // Mark that this socket has finished shutting down.
53 // The socket's state lock does not need to be held since this function is only
54 // called once the socket is ready to be destroyed.
55 void grpc_iocp_finish_socket_shutdown(grpc_winsocket* socket);
56 
57 #endif
58 
59 #endif  // GRPC_SRC_CORE_LIB_IOMGR_IOCP_WINDOWS_H
60