Revert of Turn components/crash into a layered component.

components/crash/browser/crash_dump_manager_android.cc

+// Copyright 2013 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 "components/crash/browser/crash_dump_manager_android.h"
+
+#include "base/bind.h"
+#include "base/files/file_util.h"
+#include "base/format_macros.h"
+#include "base/logging.h"
+#include "base/posix/global_descriptors.h"
+#include "base/process/process.h"
+#include "base/rand_util.h"
+#include "base/stl_util.h"
+#include "base/strings/stringprintf.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/child_process_data.h"
+#include "content/public/browser/file_descriptor_info.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/render_process_host.h"
+
+using content::BrowserThread;
+
+namespace breakpad {
+
+// static
+CrashDumpManager* CrashDumpManager::instance_ = NULL;
+
+// static
+CrashDumpManager* CrashDumpManager::GetInstance() {
+  CHECK(instance_);
+  return instance_;
+}
+
+CrashDumpManager::CrashDumpManager(const base::FilePath& crash_dump_dir)
+    : crash_dump_dir_(crash_dump_dir) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  DCHECK(!instance_);
+
+  instance_ = this;
+
+  notification_registrar_.Add(this,
+                              content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
+                              content::NotificationService::AllSources());
+  notification_registrar_.Add(this,
+                              content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
+                              content::NotificationService::AllSources());
+
+  BrowserChildProcessObserver::Add(this);
+}
+
+CrashDumpManager::~CrashDumpManager() {
+  instance_ = NULL;
+
+  BrowserChildProcessObserver::Remove(this);
+}
+
+base::File CrashDumpManager::CreateMinidumpFile(int child_process_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER);
+  base::FilePath minidump_path;
+  if (!base::CreateTemporaryFile(&minidump_path))
+    return base::File();
+
+  // We need read permission as the minidump is generated in several phases
+  // and needs to be read at some point.
+  int flags = base::File::FLAG_OPEN | base::File::FLAG_READ |
+              base::File::FLAG_WRITE;
+  base::File minidump_file(minidump_path, flags);
+  if (!minidump_file.IsValid()) {
+    LOG(ERROR) << "Failed to create temporary file, crash won't be reported.";
+    return base::File();
+  }
+
+  {
+    base::AutoLock auto_lock(child_process_id_to_minidump_path_lock_);
+    DCHECK(!ContainsKey(child_process_id_to_minidump_path_, child_process_id));
+    child_process_id_to_minidump_path_[child_process_id] = minidump_path;
+  }
+  return minidump_file.Pass();
+}
+
+// static
+void CrashDumpManager::ProcessMinidump(const base::FilePath& minidump_path,
+                                       base::ProcessHandle pid) {
+  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+  CHECK(instance_);
+  int64 file_size = 0;
+  int r = base::GetFileSize(minidump_path, &file_size);
+  DCHECK(r) << "Failed to retrieve size for minidump "
+            << minidump_path.value();
+
+  if (file_size == 0) {
+    // Empty minidump, this process did not crash. Just remove the file.
+    r = base::DeleteFile(minidump_path, false);
+    DCHECK(r) << "Failed to delete temporary minidump file "
+              << minidump_path.value();
+    return;
+  }
+
+  // We are dealing with a valid minidump. Copy it to the crash report
+  // directory from where Java code will upload it later on.
+  if (instance_->crash_dump_dir_.empty()) {
+    NOTREACHED() << "Failed to retrieve the crash dump directory.";
+    return;
+  }
+  const uint64 rand = base::RandUint64();
+  const std::string filename =
+      base::StringPrintf("chromium-renderer-minidump-%016" PRIx64 ".dmp%d",
+                         rand, pid);
+  base::FilePath dest_path = instance_->crash_dump_dir_.Append(filename);
+  r = base::Move(minidump_path, dest_path);
+  if (!r) {
+    LOG(ERROR) << "Failed to move crash dump from " << minidump_path.value()
+               << " to " << dest_path.value();
+    base::DeleteFile(minidump_path, false);
+    return;
+  }
+  VLOG(1) << "Crash minidump successfully generated: " <<
+      instance_->crash_dump_dir_.Append(filename).value();
+}
+
+void CrashDumpManager::BrowserChildProcessHostDisconnected(
+    const content::ChildProcessData& data) {
+  OnChildExit(data.id, data.handle);
+}
+
+void CrashDumpManager::BrowserChildProcessCrashed(
+    const content::ChildProcessData& data,
+    int exit_code) {
+  OnChildExit(data.id, data.handle);
+}
+
+void CrashDumpManager::Observe(int type,
+                               const content::NotificationSource& source,
+                               const content::NotificationDetails& details) {
+  switch (type) {
+    case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED:
+      // NOTIFICATION_RENDERER_PROCESS_TERMINATED is sent when the renderer
+      // process is cleanly shutdown. However, we need to fallthrough so that
+      // we close the minidump_fd we kept open.
+    case content::NOTIFICATION_RENDERER_PROCESS_CLOSED: {
+      content::RenderProcessHost* rph =
+          content::Source<content::RenderProcessHost>(source).ptr();
+      OnChildExit(rph->GetID(), rph->GetHandle());
+      break;
+    }
+    default:
+      NOTREACHED();
+      return;
+  }
+}
+
+void CrashDumpManager::OnChildExit(int child_process_id,
+                                   base::ProcessHandle pid) {
+  base::FilePath minidump_path;
+  {
+    base::AutoLock auto_lock(child_process_id_to_minidump_path_lock_);
+    ChildProcessIDToMinidumpPath::iterator iter =
+        child_process_id_to_minidump_path_.find(child_process_id);
+    if (iter == child_process_id_to_minidump_path_.end()) {
+      // We might get a NOTIFICATION_RENDERER_PROCESS_TERMINATED and a
+      // NOTIFICATION_RENDERER_PROCESS_CLOSED.
+      return;
+    }
+    minidump_path = iter->second;
+    child_process_id_to_minidump_path_.erase(iter);
+  }
+  BrowserThread::PostTask(
+      BrowserThread::FILE, FROM_HERE,
+      base::Bind(&CrashDumpManager::ProcessMinidump, minidump_path, pid));
+}
+
+}  // namespace breakpad