node/src/handle_wrap.cc at master · andercsilva/node · GitHub

History

159 lines (118 loc) · 3.81 KB

Raw

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

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

// 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 <handle_wrap.h>

namespace node {

using v8::Object;

using v8::Handle;

using v8::Local;

using v8::Persistent;

using v8::Value;

using v8::HandleScope;

using v8::FunctionTemplate;

using v8::String;

using v8::Function;

using v8::TryCatch;

using v8::Context;

using v8::Arguments;

using v8::Integer;

#define UNWRAP \

assert(!args.Holder().IsEmpty()); \

assert(args.Holder()->InternalFieldCount() > 0); \

HandleWrap* wrap = \

static_cast<HandleWrap*>(args.Holder()->GetPointerFromInternalField(0)); \

if (!wrap) { \

uv_err_t err; \

err.code = UV_EBADF; \

SetErrno(err); \

return scope.Close(Integer::New(-1)); \

}

void HandleWrap::Initialize(Handle<Object> target) {

/* Doesn't do anything at the moment. */

}

// This function is used only for process.stdout. It's put here instead of

// in TTYWrap because here we have access to the Close binding.

Handle<Value> HandleWrap::Unref(const Arguments& args) {

HandleScope scope;

UNWRAP

// Calling unnecessarily is a no-op

if (wrap->unref) {

return v8::Undefined();

}

wrap->unref = true;

uv_unref(uv_default_loop());

return v8::Undefined();

}

// Adds a reference to keep uv alive because of this thing.

Handle<Value> HandleWrap::Ref(const Arguments& args) {

HandleScope scope;

UNWRAP

// Calling multiple times is a no-op

if (!wrap->unref) {

return v8::Undefined();

}

wrap->unref = false;

uv_ref(uv_default_loop());

return v8::Undefined();

}

Handle<Value> HandleWrap::Close(const Arguments& args) {

HandleScope scope;

UNWRAP

// guard against uninitialized handle or double close

if (wrap->handle__ == NULL) return v8::Null();

assert(!wrap->object_.IsEmpty());

uv_close(wrap->handle__, OnClose);

wrap->handle__ = NULL;

HandleWrap::Ref(args);

wrap->StateChange();

return v8::Null();

}

HandleWrap::HandleWrap(Handle<Object> object, uv_handle_t* h) {

unref = false;

handle__ = h;

if (h) {

h->data = this;

}

HandleScope scope;

assert(object_.IsEmpty());

assert(object->InternalFieldCount() > 0);

object_ = v8::Persistent<v8::Object>::New(object);

object_->SetPointerInInternalField(0, this);

}

void HandleWrap::SetHandle(uv_handle_t* h) {

handle__ = h;

h->data = this;

}

HandleWrap::~HandleWrap() {

assert(object_.IsEmpty());

}

void HandleWrap::OnClose(uv_handle_t* handle) {

HandleWrap* wrap = static_cast<HandleWrap*>(handle->data);

// The wrap object should still be there.

assert(wrap->object_.IsEmpty() == false);

// But the handle pointer should be gone.

assert(wrap->handle__ == NULL);

wrap->object_->SetPointerInInternalField(0, NULL);

wrap->object_.Dispose();

wrap->object_.Clear();

delete wrap;

}

} // namespace node

node/src/handle_wrap.cc at master · andercsilva/node · GitHub

Expand file tree

Breadcrumbs

handle_wrap.cc

Latest commit

History

Breadcrumbs

handle_wrap.cc

File metadata and controls