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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SRC_STREAM_WRAP_H_
#define SRC_STREAM_WRAP_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "stream_base.h"
#include "env.h"
#include "handle_wrap.h"
#include "string_bytes.h"
#include "v8.h"
namespace node {
class LibuvStreamWrap : public HandleWrap, public StreamBase {
public:
static void Initialize(v8::Local<v8::Object> target,
v8::Local<v8::Value> unused,
v8::Local<v8::Context> context);
int GetFD() override;
bool IsAlive() override;
bool IsClosing() override;
bool IsIPCPipe() override;
// JavaScript functions
int ReadStart() override;
int ReadStop() override;
// Resource implementation
int DoShutdown(ShutdownWrap* req_wrap) override;
int DoTryWrite(uv_buf_t** bufs, size_t* count) override;
int DoWrite(WriteWrap* w,
uv_buf_t* bufs,
size_t count,
uv_stream_t* send_handle) override;
inline uv_stream_t* stream() const {
return stream_;
}
inline bool is_named_pipe() const {
return stream()->type == UV_NAMED_PIPE;
}
inline bool is_named_pipe_ipc() const {
return is_named_pipe() &&
reinterpret_cast<const uv_pipe_t*>(stream())->ipc != 0;
}
inline bool is_tcp() const {
return stream()->type == UV_TCP;
}
ShutdownWrap* CreateShutdownWrap(v8::Local<v8::Object> object) override;
WriteWrap* CreateWriteWrap(v8::Local<v8::Object> object) override;
protected:
LibuvStreamWrap(Environment* env,
v8::Local<v8::Object> object,
uv_stream_t* stream,
AsyncWrap::ProviderType provider);
AsyncWrap* GetAsyncWrap() override;
static void AddMethods(Environment* env,
v8::Local<v8::FunctionTemplate> target,
int flags = StreamBase::kFlagNone);
protected:
inline void set_fd(int fd) {
#ifdef _WIN32
fd_ = fd;
#endif
}
private:
static void GetWriteQueueSize(
const v8::FunctionCallbackInfo<v8::Value>& info);
static void SetBlocking(const v8::FunctionCallbackInfo<v8::Value>& args);
// Callbacks for libuv
void OnUvAlloc(size_t suggested_size, uv_buf_t* buf);
void OnUvRead(ssize_t nread, const uv_buf_t* buf);
static void AfterUvWrite(uv_write_t* req, int status);
static void AfterUvShutdown(uv_shutdown_t* req, int status);
uv_stream_t* const stream_;
#ifdef _WIN32
// We don't always have an FD that we could look up on the stream_
// object itself on Windows. However, for some cases, we open handles
// using FDs; In that case, we can store and provide the value.
// This became necessary because it allows to detect situations
// where multiple handles refer to the same stdio FDs (in particular,
// a possible IPC channel and a regular process.std??? stream).
int fd_ = -1;
#endif
};
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_STREAM_WRAP_H_
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