| /* |
| * |
| * Copyright 2018 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. |
| * |
| */ |
| |
| /* The CFStream handle acts as an event synchronization entity for |
| * read/write/open/error/eos events happening on CFStream streams. */ |
| |
| #ifndef GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H |
| #define GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include "src/core/lib/iomgr/port.h" |
| |
| #ifdef GRPC_CFSTREAM |
| #import <CoreFoundation/CoreFoundation.h> |
| |
| #include "src/core/lib/iomgr/closure.h" |
| #include "src/core/lib/iomgr/lockfree_event.h" |
| |
| class CFStreamHandle final { |
| public: |
| static CFStreamHandle* CreateStreamHandle(CFReadStreamRef read_stream, |
| CFWriteStreamRef write_stream); |
| ~CFStreamHandle(); |
| CFStreamHandle(const CFReadStreamRef& ref) = delete; |
| CFStreamHandle(CFReadStreamRef&& ref) = delete; |
| CFStreamHandle& operator=(const CFStreamHandle& rhs) = delete; |
| |
| void NotifyOnOpen(grpc_closure* closure); |
| void NotifyOnRead(grpc_closure* closure); |
| void NotifyOnWrite(grpc_closure* closure); |
| void Shutdown(grpc_error* error); |
| |
| void Ref(const char* file = "", int line = 0, const char* reason = nullptr); |
| void Unref(const char* file = "", int line = 0, const char* reason = nullptr); |
| |
| private: |
| CFStreamHandle(CFReadStreamRef read_stream, CFWriteStreamRef write_stream); |
| static void ReadCallback(CFReadStreamRef stream, CFStreamEventType type, |
| void* client_callback_info); |
| static void WriteCallback(CFWriteStreamRef stream, CFStreamEventType type, |
| void* client_callback_info); |
| static void* Retain(void* info); |
| static void Release(void* info); |
| |
| grpc_core::LockfreeEvent open_event_; |
| grpc_core::LockfreeEvent read_event_; |
| grpc_core::LockfreeEvent write_event_; |
| |
| gpr_refcount refcount_; |
| }; |
| |
| #ifdef DEBUG |
| #define CFSTREAM_HANDLE_REF(handle, reason) \ |
| (handle)->Ref(__FILE__, __LINE__, (reason)) |
| #define CFSTREAM_HANDLE_UNREF(handle, reason) \ |
| (handle)->Unref(__FILE__, __LINE__, (reason)) |
| #else |
| #define CFSTREAM_HANDLE_REF(handle, reason) (handle)->Ref() |
| #define CFSTREAM_HANDLE_UNREF(handle, reason) (handle)->Unref() |
| #endif |
| |
| #endif |
| |
| #endif /* GRPC_CORE_LIB_IOMGR_CFSTREAM_HANDLE_H */ |