diff options
Diffstat (limited to 'mojo/edk/js/drain_data.cc')
-rw-r--r-- | mojo/edk/js/drain_data.cc | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/mojo/edk/js/drain_data.cc b/mojo/edk/js/drain_data.cc deleted file mode 100644 index 0667c64..0000000 --- a/mojo/edk/js/drain_data.cc +++ /dev/null @@ -1,131 +0,0 @@ -// Copyright 2014 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "mojo/edk/js/drain_data.h" - -#include "gin/array_buffer.h" -#include "gin/converter.h" -#include "gin/dictionary.h" -#include "gin/per_context_data.h" -#include "gin/per_isolate_data.h" -#include "mojo/public/cpp/environment/environment.h" -#include "mojo/public/cpp/system/core.h" - -namespace mojo { -namespace js { - -DrainData::DrainData(v8::Isolate* isolate, mojo::Handle handle) - : isolate_(isolate), - handle_(DataPipeConsumerHandle(handle.value())), - wait_id_(0) { - - v8::Handle<v8::Context> context(isolate_->GetCurrentContext()); - runner_ = gin::PerContextData::From(context)->runner()->GetWeakPtr(); - - WaitForData(); -} - -v8::Handle<v8::Value> DrainData::GetPromise() { - CHECK(resolver_.IsEmpty()); - v8::Handle<v8::Promise::Resolver> resolver( - v8::Promise::Resolver::New(isolate_)); - resolver_.Reset(isolate_, resolver); - return resolver->GetPromise(); -} - -DrainData::~DrainData() { - if (wait_id_) - Environment::GetDefaultAsyncWaiter()->CancelWait(wait_id_); - resolver_.Reset(); -} - -void DrainData::WaitForData() { - wait_id_ = Environment::GetDefaultAsyncWaiter()->AsyncWait( - handle_.get().value(), - MOJO_HANDLE_SIGNAL_READABLE, - MOJO_DEADLINE_INDEFINITE, - &DrainData::WaitCompleted, - this); -} - -void DrainData::DataReady(MojoResult result) { - wait_id_ = 0; - if (result != MOJO_RESULT_OK) { - DeliverData(result); - return; - } - while (result == MOJO_RESULT_OK) { - result = ReadData(); - if (result == MOJO_RESULT_SHOULD_WAIT) - WaitForData(); - else if (result != MOJO_RESULT_OK) - DeliverData(result); - } -} - -MojoResult DrainData::ReadData() { - const void* buffer; - uint32_t num_bytes = 0; - MojoResult result = BeginReadDataRaw( - handle_.get(), &buffer, &num_bytes, MOJO_READ_DATA_FLAG_NONE); - if (result != MOJO_RESULT_OK) - return result; - const char* p = static_cast<const char*>(buffer); - DataBuffer* data_buffer = new DataBuffer(p, p + num_bytes); - data_buffers_.push_back(data_buffer); - return EndReadDataRaw(handle_.get(), num_bytes); -} - -void DrainData::DeliverData(MojoResult result) { - if (!runner_) { - delete this; - return; - } - - size_t total_bytes = 0; - for (unsigned i = 0; i < data_buffers_.size(); i++) - total_bytes += data_buffers_[i]->size(); - - // Create a total_bytes length ArrayBuffer return value. - gin::Runner::Scope scope(runner_.get()); - v8::Handle<v8::ArrayBuffer> array_buffer = - v8::ArrayBuffer::New(isolate_, total_bytes); - gin::ArrayBuffer buffer; - ConvertFromV8(isolate_, array_buffer, &buffer); - CHECK_EQ(total_bytes, buffer.num_bytes()); - - // Copy the data_buffers into the ArrayBuffer. - char* array_buffer_ptr = static_cast<char*>(buffer.bytes()); - size_t offset = 0; - for (size_t i = 0; i < data_buffers_.size(); i++) { - size_t num_bytes = data_buffers_[i]->size(); - if (num_bytes == 0) - continue; - const char* data_buffer_ptr = &((*data_buffers_[i])[0]); - memcpy(array_buffer_ptr + offset, data_buffer_ptr, num_bytes); - offset += num_bytes; - } - - // The "settled" value of the promise always includes all of the data - // that was read before either an error occurred or the remote pipe handle - // was closed. The latter is indicated by MOJO_RESULT_FAILED_PRECONDITION. - - v8::Handle<v8::Promise::Resolver> resolver( - v8::Local<v8::Promise::Resolver>::New(isolate_, resolver_)); - - gin::Dictionary dictionary = gin::Dictionary::CreateEmpty(isolate_); - dictionary.Set("result", result); - dictionary.Set("buffer", array_buffer); - v8::Handle<v8::Value> settled_value(ConvertToV8(isolate_, dictionary)); - - if (result == MOJO_RESULT_FAILED_PRECONDITION) - resolver->Resolve(settled_value); - else - resolver->Reject(settled_value); - - delete this; -} - -} // namespace js -} // namespace mojo |