Add MinidumpCrashpadModule, its list form, their writers, and their tests

minidump/minidump_crashpad_module_writer.cc

Index: minidump/minidump_crashpad_module_writer.cc
diff --git a/minidump/minidump_crashpad_module_writer.cc b/minidump/minidump_crashpad_module_writer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5e89e8de574b819e5d6fb321d48c219a7c351f67
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+++ b/minidump/minidump_crashpad_module_writer.cc
@@ -0,0 +1,160 @@
+// 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_crashpad_module_writer.h"
+
+#include <sys/types.h>
+
+#include "base/logging.h"
+#include "minidump/minidump_simple_string_dictionary_writer.h"
+#include "util/file/file_writer.h"
+#include "util/numeric/safe_assignment.h"
+
+namespace crashpad {
+
+MinidumpModuleCrashpadInfoWriter::MinidumpModuleCrashpadInfoWriter()
+    : MinidumpWritable(), module_(), simple_annotations_() {
+  module_.version = MinidumpModuleCrashpadInfo::kVersion;
+}
+
+MinidumpModuleCrashpadInfoWriter::~MinidumpModuleCrashpadInfoWriter() {
+}
+
+void MinidumpModuleCrashpadInfoWriter::SetSimpleAnnotations(
+    MinidumpSimpleStringDictionaryWriter* simple_annotations) {
+  DCHECK_EQ(state(), kStateMutable);
+
+  simple_annotations_ = simple_annotations;
+}
+
+bool MinidumpModuleCrashpadInfoWriter::Freeze() {
+  DCHECK_EQ(state(), kStateMutable);
+
+  if (!MinidumpWritable::Freeze()) {
+    return false;
+  }
+
+  if (simple_annotations_) {
+    simple_annotations_->RegisterLocationDescriptor(
+        &module_.simple_annotations);
+  }
+
+  return true;
+}
+
+size_t MinidumpModuleCrashpadInfoWriter::SizeOfObject() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  return sizeof(module_);
+}
+
+std::vector<internal::MinidumpWritable*>
+MinidumpModuleCrashpadInfoWriter::Children() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  std::vector<MinidumpWritable*> children;
+  if (simple_annotations_) {
+    children.push_back(simple_annotations_);
+  }
+
+  return children;
+}
+
+bool MinidumpModuleCrashpadInfoWriter::WriteObject(
+    FileWriterInterface* file_writer) {
+  DCHECK_EQ(state(), kStateWritable);
+
+  return file_writer->Write(&module_, sizeof(module_));
+}
+
+MinidumpModuleCrashpadInfoListWriter::MinidumpModuleCrashpadInfoListWriter()
+    : MinidumpWritable(),
+      module_list_base_(),
+      modules_(),
+      module_location_descriptors_() {
+}
+
+MinidumpModuleCrashpadInfoListWriter::~MinidumpModuleCrashpadInfoListWriter() {
+}
+
+void MinidumpModuleCrashpadInfoListWriter::AddModule(
+    MinidumpModuleCrashpadInfoWriter* module) {
+  DCHECK_EQ(state(), kStateMutable);
+
+  modules_.push_back(module);
+}
+
+bool MinidumpModuleCrashpadInfoListWriter::Freeze() {
+  DCHECK_EQ(state(), kStateMutable);
+  DCHECK(module_location_descriptors_.empty());
+
+  if (!MinidumpWritable::Freeze()) {
+    return false;
+  }
+
+  size_t module_count = modules_.size();
+  if (!AssignIfInRange(&module_list_base_.count, module_count)) {
+    LOG(ERROR) << "module_count " << module_count << " out of range";
+    return false;
+  }
+
+  module_location_descriptors_.resize(module_count);
+  for (size_t index = 0; index < module_count; ++index) {
+    modules_[index]->RegisterLocationDescriptor(
+        &module_location_descriptors_[index]);
+  }
+
+  return true;
+}
+
+size_t MinidumpModuleCrashpadInfoListWriter::SizeOfObject() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  return sizeof(module_list_base_) +
+         modules_.size() * sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
+}
+
+std::vector<internal::MinidumpWritable*>
+MinidumpModuleCrashpadInfoListWriter::Children() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  std::vector<MinidumpWritable*> children;
+  for (MinidumpModuleCrashpadInfoWriter* module : modules_) {
+    children.push_back(module);
+  }
+
+  return children;
+}
+
+bool MinidumpModuleCrashpadInfoListWriter::WriteObject(
+    FileWriterInterface* file_writer) {
+  DCHECK_EQ(state(), kStateWritable);
+  DCHECK_EQ(modules_.size(), module_location_descriptors_.size());
+
+  WritableIoVec iov;
+  iov.iov_base = &module_list_base_;
+  iov.iov_len = sizeof(module_list_base_);
+  std::vector<WritableIoVec> iovecs(1, iov);
+
+  if (!module_location_descriptors_.empty()) {
+    iov.iov_base = &module_location_descriptors_[0];
+    iov.iov_len = module_location_descriptors_.size() *
+                  sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
+    iovecs.push_back(iov);
+  }
+
+  return file_writer->WriteIoVec(&iovecs);
+}
+
+}  // namespace crashpad