Current File : //proc/self/root/usr/src/node-v0.10.4/src/pipe_wrap.cc
// 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.
#include "node.h"
#include "node_buffer.h"
#include "req_wrap.h"
#include "handle_wrap.h"
#include "stream_wrap.h"
#include "pipe_wrap.h"
namespace node {
using v8::Arguments;
using v8::Boolean;
using v8::Context;
using v8::Function;
using v8::FunctionTemplate;
using v8::Handle;
using v8::HandleScope;
using v8::Integer;
using v8::Local;
using v8::Object;
using v8::Persistent;
using v8::PropertyAttribute;
using v8::String;
using v8::TryCatch;
using v8::Value;
Persistent<Function> pipeConstructor;
static Persistent<String> onconnection_sym;
static Persistent<String> oncomplete_sym;
// TODO share with TCPWrap?
typedef class ReqWrap<uv_connect_t> ConnectWrap;
uv_pipe_t* PipeWrap::UVHandle() {
return &handle_;
}
Local<Object> PipeWrap::Instantiate() {
HandleScope scope;
assert(!pipeConstructor.IsEmpty());
return scope.Close(pipeConstructor->NewInstance());
}
PipeWrap* PipeWrap::Unwrap(Local<Object> obj) {
assert(!obj.IsEmpty());
assert(obj->InternalFieldCount() > 0);
return static_cast<PipeWrap*>(obj->GetPointerFromInternalField(0));
}
void PipeWrap::Initialize(Handle<Object> target) {
StreamWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(String::NewSymbol("Pipe"));
t->InstanceTemplate()->SetInternalFieldCount(1);
enum PropertyAttribute attributes =
static_cast<PropertyAttribute>(v8::ReadOnly | v8::DontDelete);
t->InstanceTemplate()->SetAccessor(String::New("fd"),
StreamWrap::GetFD,
NULL,
Handle<Value>(),
v8::DEFAULT,
attributes);
NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
NODE_SET_PROTOTYPE_METHOD(t, "unref", HandleWrap::Unref);
NODE_SET_PROTOTYPE_METHOD(t, "ref", HandleWrap::Ref);
NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);
NODE_SET_PROTOTYPE_METHOD(t, "shutdown", StreamWrap::Shutdown);
NODE_SET_PROTOTYPE_METHOD(t, "writeBuffer", StreamWrap::WriteBuffer);
NODE_SET_PROTOTYPE_METHOD(t, "writeAsciiString", StreamWrap::WriteAsciiString);
NODE_SET_PROTOTYPE_METHOD(t, "writeUtf8String", StreamWrap::WriteUtf8String);
NODE_SET_PROTOTYPE_METHOD(t, "writeUcs2String", StreamWrap::WriteUcs2String);
NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
NODE_SET_PROTOTYPE_METHOD(t, "listen", Listen);
NODE_SET_PROTOTYPE_METHOD(t, "connect", Connect);
NODE_SET_PROTOTYPE_METHOD(t, "open", Open);
#ifdef _WIN32
NODE_SET_PROTOTYPE_METHOD(t, "setPendingInstances", SetPendingInstances);
#endif
pipeConstructor = Persistent<Function>::New(t->GetFunction());
target->Set(String::NewSymbol("Pipe"), pipeConstructor);
}
Handle<Value> PipeWrap::New(const Arguments& args) {
// This constructor should not be exposed to public javascript.
// Therefore we assert that we are not trying to call this as a
// normal function.
assert(args.IsConstructCall());
HandleScope scope;
PipeWrap* wrap = new PipeWrap(args.This(), args[0]->IsTrue());
assert(wrap);
return scope.Close(args.This());
}
PipeWrap::PipeWrap(Handle<Object> object, bool ipc)
: StreamWrap(object, (uv_stream_t*) &handle_) {
int r = uv_pipe_init(uv_default_loop(), &handle_, ipc);
assert(r == 0); // How do we proxy this error up to javascript?
// Suggestion: uv_pipe_init() returns void.
handle_.data = static_cast<void*>(this);
UpdateWriteQueueSize();
}
Handle<Value> PipeWrap::Bind(const Arguments& args) {
HandleScope scope;
UNWRAP(PipeWrap)
String::AsciiValue name(args[0]);
int r = uv_pipe_bind(&wrap->handle_, *name);
// Error starting the pipe.
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
#ifdef _WIN32
Handle<Value> PipeWrap::SetPendingInstances(const Arguments& args) {
HandleScope scope;
UNWRAP(PipeWrap)
int instances = args[0]->Int32Value();
uv_pipe_pending_instances(&wrap->handle_, instances);
return v8::Null();
}
#endif
Handle<Value> PipeWrap::Listen(const Arguments& args) {
HandleScope scope;
UNWRAP(PipeWrap)
int backlog = args[0]->Int32Value();
int r = uv_listen((uv_stream_t*)&wrap->handle_, backlog, OnConnection);
// Error starting the pipe.
if (r) SetErrno(uv_last_error(uv_default_loop()));
return scope.Close(Integer::New(r));
}
// TODO maybe share with TCPWrap?
void PipeWrap::OnConnection(uv_stream_t* handle, int status) {
HandleScope scope;
PipeWrap* wrap = static_cast<PipeWrap*>(handle->data);
assert(&wrap->handle_ == (uv_pipe_t*)handle);
// We should not be getting this callback if someone as already called
// uv_close() on the handle.
assert(wrap->object_.IsEmpty() == false);
if (status != 0) {
SetErrno(uv_last_error(uv_default_loop()));
MakeCallback(wrap->object_, "onconnection", 0, NULL);
return;
}
// Instanciate the client javascript object and handle.
Local<Object> client_obj = pipeConstructor->NewInstance();
// Unwrap the client javascript object.
assert(client_obj->InternalFieldCount() > 0);
PipeWrap* client_wrap =
static_cast<PipeWrap*>(client_obj->GetPointerFromInternalField(0));
if (uv_accept(handle, (uv_stream_t*)&client_wrap->handle_)) return;
// Successful accept. Call the onconnection callback in JavaScript land.
Local<Value> argv[1] = { client_obj };
if (onconnection_sym.IsEmpty()) {
onconnection_sym = NODE_PSYMBOL("onconnection");
}
MakeCallback(wrap->object_, onconnection_sym, ARRAY_SIZE(argv), argv);
}
// TODO Maybe share this with TCPWrap?
void PipeWrap::AfterConnect(uv_connect_t* req, int status) {
ConnectWrap* req_wrap = (ConnectWrap*) req->data;
PipeWrap* wrap = (PipeWrap*) req->handle->data;
HandleScope scope;
// The wrap and request objects should still be there.
assert(req_wrap->object_.IsEmpty() == false);
assert(wrap->object_.IsEmpty() == false);
bool readable, writable;
if (status) {
SetErrno(uv_last_error(uv_default_loop()));
readable = writable = 0;
} else {
readable = uv_is_readable(req->handle) != 0;
writable = uv_is_writable(req->handle) != 0;
}
Local<Value> argv[5] = {
Integer::New(status),
Local<Value>::New(wrap->object_),
Local<Value>::New(req_wrap->object_),
Local<Value>::New(Boolean::New(readable)),
Local<Value>::New(Boolean::New(writable))
};
if (oncomplete_sym.IsEmpty()) {
oncomplete_sym = NODE_PSYMBOL("oncomplete");
}
MakeCallback(req_wrap->object_, oncomplete_sym, ARRAY_SIZE(argv), argv);
delete req_wrap;
}
Handle<Value> PipeWrap::Open(const Arguments& args) {
HandleScope scope;
UNWRAP(PipeWrap)
int fd = args[0]->IntegerValue();
uv_pipe_open(&wrap->handle_, fd);
return scope.Close(v8::Null());
}
Handle<Value> PipeWrap::Connect(const Arguments& args) {
HandleScope scope;
UNWRAP(PipeWrap)
String::AsciiValue name(args[0]);
ConnectWrap* req_wrap = new ConnectWrap();
uv_pipe_connect(&req_wrap->req_,
&wrap->handle_,
*name,
AfterConnect);
req_wrap->Dispatched();
return scope.Close(req_wrap->object_);
}
} // namespace node
NODE_MODULE(node_pipe_wrap, node::PipeWrap::Initialize)
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