minidump: Reorganize MinidumpModuleCrashpadInfo to improve linking between structures

minidump/minidump_location_descriptor_list_writer.cc

-// Copyright 2014 The Crashpad Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "minidump/minidump_location_descriptor_list_writer.h"
-
-#include "base/logging.h"
-#include "util/file/file_writer.h"
-#include "util/numeric/safe_assignment.h"
-
-namespace crashpad {
-namespace internal {
-
-MinidumpLocationDescriptorListWriter::MinidumpLocationDescriptorListWriter()
-    : MinidumpWritable(),
-      location_descriptor_list_base_(new MinidumpLocationDescriptorList()),
-      children_(),
-      child_location_descriptors_() {
-}
-
-MinidumpLocationDescriptorListWriter::~MinidumpLocationDescriptorListWriter() {
-}
-
-void MinidumpLocationDescriptorListWriter::AddChild(
-    scoped_ptr<MinidumpWritable> child) {
-  DCHECK_EQ(state(), kStateMutable);
-
-  children_.push_back(child.release());
-}
-
-bool MinidumpLocationDescriptorListWriter::Freeze() {
-  DCHECK_EQ(state(), kStateMutable);
-  DCHECK(child_location_descriptors_.empty());
-
-  if (!MinidumpWritable::Freeze()) {
-    return false;
-  }
-
-  size_t child_count = children_.size();
-  if (!AssignIfInRange(&location_descriptor_list_base_->count,
-                       child_count)) {
-    LOG(ERROR) << "child_count " << child_count << " out of range";
-    return false;
-  }
-
-  child_location_descriptors_.resize(child_count);
-  for (size_t index = 0; index < child_count; ++index) {
-    children_[index]->RegisterLocationDescriptor(
-        &child_location_descriptors_[index]);
-  }
-
-  return true;
-}
-
-size_t MinidumpLocationDescriptorListWriter::SizeOfObject() {
-  DCHECK_GE(state(), kStateFrozen);
-
-  return sizeof(*location_descriptor_list_base_) +
-         children_.size() * sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
-}
-
-std::vector<MinidumpWritable*>
-MinidumpLocationDescriptorListWriter::Children() {
-  DCHECK_GE(state(), kStateFrozen);
-
-  std::vector<MinidumpWritable*> children;
-  for (MinidumpWritable* child : children_) {
-    children.push_back(child);
-  }
-
-  return children;
-}
-
-bool MinidumpLocationDescriptorListWriter::WriteObject(
-    FileWriterInterface* file_writer) {
-  DCHECK_EQ(state(), kStateWritable);
-  DCHECK_EQ(children_.size(), child_location_descriptors_.size());
-
-  WritableIoVec iov;
-  iov.iov_base = location_descriptor_list_base_.get();
-  iov.iov_len = sizeof(*location_descriptor_list_base_);
-  std::vector<WritableIoVec> iovecs(1, iov);
-
-  if (!child_location_descriptors_.empty()) {
-    iov.iov_base = &child_location_descriptors_[0];
-    iov.iov_len = child_location_descriptors_.size() *
-                  sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
-    iovecs.push_back(iov);
-  }
-
-  return file_writer->WriteIoVec(&iovecs);
-}
-
-}  // namespace internal
-}  // namespace crashpad