Adding crash utilities to chromecast/crash.

chromecast/crash/linux/crash_util.cc

+// Copyright 2015 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 "chromecast/crash/linux/crash_util.h"
+
+#include <stdlib.h>
+
+#include "base/files/file_path.h"
+#include "base/time/time.h"
+#include "chromecast/base/path_utils.h"
+#include "chromecast/base/version.h"
+#include "chromecast/crash/app_state_tracker.h"
+#include "chromecast/crash/linux/dummy_minidump_generator.h"
+#include "chromecast/crash/linux/minidump_writer.h"
+
+namespace chromecast {
+
+// static
+uint64_t CrashUtil::GetCurrentTimeMs() {
+  return (base::TimeTicks::Now() - base::TimeTicks()).InMilliseconds();
+}
+
+// static
+void CrashUtil::RequestUploadCrashDump(
+    const std::string& existing_minidump_path,
+    const std::string& crashed_process_name,
+    uint64_t crashed_process_start_time_ms) {
+  LOG(INFO) << "Request to upload crash dump " << existing_minidump_path
+            << " for process " << crashed_process_name;
+  // Note: Do not use Chromium IO methods in this function. When cast_shell
+  // crashes, this function can be called by any thread, which may not allow IO.
+  // Use stdlib system calls for IO instead.
+  uint64_t uptime_ms = GetCurrentTimeMs() - crashed_process_start_time_ms;
+  MinidumpParams params(crashed_process_name,
+                        uptime_ms,
+                        "",  // suffix
+                        AppStateTracker::GetPreviousApp(),
+                        AppStateTracker::GetCurrentApp(),
+                        AppStateTracker::GetLastLaunchedApp(),
+                        CAST_BUILD_RELEASE,
+                        CAST_BUILD_INCREMENTAL);
+  DummyMinidumpGenerator minidump_generator(existing_minidump_path);
+
+  // TODO(slan): Use FilePath and file_utils instead of string manipulation.
+  // Moving minidump file from /tmp/xxxxxxxxxx to $HOME/minidumps/xxxxxxxx
+  // Get filename only.
+  const size_t separator_idx = existing_minidump_path.find_last_of('/');
+  const std::string filename =
+      (separator_idx != std::string::npos)
+          ? existing_minidump_path.substr(separator_idx + 1)
+          : existing_minidump_path;
+  const std::string dump_path = GetHomePathASCII("minidumps").value();
+  const std::string target_minidump_path =
+      dump_path + std::string("/") + filename;
+  MinidumpWriter writer(&minidump_generator, target_minidump_path, params);
+  writer.DoWorkLocked();  // error already logged.
+
+  // Still delete /tmp file to free memory, in case anything wrong in
+  // DummyMinidumpGenerator.
+  if (0 != remove(existing_minidump_path.c_str())) {
+    // According to base/files/file_util.h, it is considered successful
+    // to delete a file that does not exist.
+    LOG(ERROR) << "Unable to delete temp minidump file "
+               << existing_minidump_path;
+  }
+
+  // Use std::endl to flush the log stream in case this process exits.
+  LOG(INFO) << "Request to upload crash dump finished. "
+            << "Exit now if it is main process that crashed." << std::endl;
+}
+
+}  // namespace chromecast