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..3cd40afcb975b2b99bf6be32e0f10e7bef1a1f38
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+++ b/minidump/minidump_crashpad_module_writer.cc
@@ -0,0 +1,161 @@
+// 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 "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 {
+
+MinidumpCrashpadModuleWriter::MinidumpCrashpadModuleWriter()
+    : MinidumpWritable(), crashpad_module_(), simple_annotations_() {
+  crashpad_module_.version = MinidumpCrashpadModule::kVersion;
+}
+
+MinidumpCrashpadModuleWriter::~MinidumpCrashpadModuleWriter() {
+}
+
+void MinidumpCrashpadModuleWriter::SetSimpleAnnotations(
+    MinidumpSimpleStringDictionaryWriter* simple_annotations) {
+  DCHECK_EQ(state(), kStateMutable);
+
+  simple_annotations_ = simple_annotations;
+}
+
+bool MinidumpCrashpadModuleWriter::Freeze() {
+  DCHECK_EQ(state(), kStateMutable);
+
+  if (!MinidumpWritable::Freeze()) {
+    return false;
+  }
+
+  if (simple_annotations_) {
+    simple_annotations_->RegisterLocationDescriptor(
+        &crashpad_module_.simple_annotations);
+  }
+
+  return true;
+}
+
+size_t MinidumpCrashpadModuleWriter::SizeOfObject() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  return sizeof(crashpad_module_);
+}
+
+std::vector<internal::MinidumpWritable*>
+MinidumpCrashpadModuleWriter::Children() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  std::vector<MinidumpWritable*> children;
+  if (simple_annotations_) {
+    children.push_back(simple_annotations_);
+  }
+
+  return children;
+}
+
+bool MinidumpCrashpadModuleWriter::WriteObject(
+    FileWriterInterface* file_writer) {
+  DCHECK_EQ(state(), kStateWritable);
+
+  return file_writer->Write(&crashpad_module_, sizeof(crashpad_module_));
+}
+
+MinidumpCrashpadModuleListWriter::MinidumpCrashpadModuleListWriter()
+    : MinidumpWritable(),
+      crashpad_module_list_base_(),
+      crashpad_modules_(),
+      crashpad_module_location_descriptors_() {
+}
+
+MinidumpCrashpadModuleListWriter::~MinidumpCrashpadModuleListWriter() {
+}
+
+void MinidumpCrashpadModuleListWriter::AddCrashpadModule(
+    MinidumpCrashpadModuleWriter* crashpad_module) {
+  DCHECK_EQ(state(), kStateMutable);
+
+  crashpad_modules_.push_back(crashpad_module);
+}
+
+bool MinidumpCrashpadModuleListWriter::Freeze() {
+  DCHECK_EQ(state(), kStateMutable);
+  DCHECK(crashpad_module_location_descriptors_.empty());
+
+  if (!MinidumpWritable::Freeze()) {
+    return false;
+  }
+
+  size_t crashpad_module_count = crashpad_modules_.size();
+  if (!AssignIfInRange(&crashpad_module_list_base_.count,
+                       crashpad_module_count)) {
+    LOG(ERROR) << "crashpad_module_count " << crashpad_module_count
+               << " out of range";
+    return false;
+  }
+
+  crashpad_module_location_descriptors_.resize(crashpad_module_count);
+  for (size_t index = 0; index < crashpad_module_count; ++index) {
+    crashpad_modules_[index]->RegisterLocationDescriptor(
+        &crashpad_module_location_descriptors_[index]);
+  }
+
+  return true;
+}
+
+size_t MinidumpCrashpadModuleListWriter::SizeOfObject() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  return sizeof(crashpad_module_list_base_) +
+         crashpad_modules_.size() * sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
+}
+
+std::vector<internal::MinidumpWritable*>
+MinidumpCrashpadModuleListWriter::Children() {
+  DCHECK_GE(state(), kStateFrozen);
+
+  std::vector<MinidumpWritable*> children;
+  for (MinidumpCrashpadModuleWriter* crashpad_module : crashpad_modules_) {
+    children.push_back(crashpad_module);
+  }
+
+  return children;
+}
+
+bool MinidumpCrashpadModuleListWriter::WriteObject(
+    FileWriterInterface* file_writer) {
+  DCHECK_EQ(state(), kStateWritable);
+  DCHECK_EQ(crashpad_modules_.size(),
+            crashpad_module_location_descriptors_.size());
+
+  WritableIoVec iov;
+  iov.iov_base = &crashpad_module_list_base_;
+  iov.iov_len = sizeof(crashpad_module_list_base_);
+  std::vector<WritableIoVec> iovecs(1, iov);
+
+  if (!crashpad_module_location_descriptors_.empty()) {
+    iov.iov_base = &crashpad_module_location_descriptors_[0];
+    iov.iov_len = crashpad_module_location_descriptors_.size() *
+                  sizeof(MINIDUMP_LOCATION_DESCRIPTOR);
+    iovecs.push_back(iov);
+  }
+
+  return file_writer->WriteIoVec(&iovecs);
+}
+
+}  // namespace crashpad