Adding crash utilities to chromecast/crash.

chromecast/crash/linux/crash_util.cc

Index: chromecast/crash/linux/crash_util.cc
diff --git a/chromecast/crash/linux/crash_util.cc b/chromecast/crash/linux/crash_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e80b179c16e35d8f2292fd0892a9303563ac97a9
--- /dev/null
+++ b/chromecast/crash/linux/crash_util.cc
@@ -0,0 +1,91 @@
+// 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/bind.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 {
+
+namespace {
+
+// This can be set to a callback for testing. This allows us to inject a fake
+// dumpstate routine to avoid calling an executable during an automated test.
+// This value should not be mutated through any other function except
+// CrashUtil::SetDumpStateCbForTest().
+static base::Callback<int(const std::string&)>* g_dumpstate_cb = nullptr;
+
+}  // namespace
+
+// static
+uint64_t CrashUtil::GetCurrentTimeMs() {
+  return (base::TimeTicks::Now() - base::TimeTicks()).InMilliseconds();
+}
+
+// static
+bool 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);
+
+  base::FilePath filename = base::FilePath(existing_minidump_path).BaseName();
+
+  scoped_ptr<MinidumpWriter> writer;
+  if (g_dumpstate_cb) {
+    writer.reset(new MinidumpWriter(
+        &minidump_generator, filename.value(), params, *g_dumpstate_cb));
+  } else {
+    writer.reset(
+        new MinidumpWriter(&minidump_generator, filename.value(), params));
+  }
+  bool success = false;
+  writer->set_non_blocking(false);
+  success = (0 == writer->Write());  // error already logged.
+
+  // In case the file is still in $TEMP, remove it.
+  if (remove(existing_minidump_path.c_str()) < 0 && errno != ENOENT) {
+    LOG(ERROR) << "Unable to delete temp minidump file "
+               << existing_minidump_path << ": " << strerror(errno);
+    success = false;
+  }
+
+  // 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;
+
+  return success;
+}
+
+void CrashUtil::SetDumpStateCbForTest(
+    const base::Callback<int(const std::string&)>& cb) {
+  DCHECK(!g_dumpstate_cb);
+  g_dumpstate_cb = new base::Callback<int(const std::string&)>(cb);
+}
+
+}  // namespace chromecast