1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// 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 "handle_wrap.h"
#include "v8.h"
namespace node {
class Environment;
class ExternalReferenceRegistry;
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,
void* priv);
static void RegisterExternalReferences(ExternalReferenceRegistry* registry);
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;
static LibuvStreamWrap* From(Environment* env, v8::Local<v8::Object> object);
protected:
LibuvStreamWrap(Environment* env,
v8::Local<v8::Object> object,
uv_stream_t* stream,
AsyncWrap::ProviderType provider);
AsyncWrap* GetAsyncWrap() override;
static v8::Local<v8::FunctionTemplate> GetConstructorTemplate(
Environment* env);
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_
|