1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/browser/chromeos/drive/logging.h" 6 7 #include <stdarg.h> // va_list 8 #include <string> 9 10 #include "base/lazy_instance.h" 11 #include "base/strings/stringprintf.h" 12 #include "chrome/browser/drive/event_logger.h" 13 14 namespace drive { 15 namespace util { 16 namespace { 17 18 static base::LazyInstance<EventLogger> g_logger = 19 LAZY_INSTANCE_INITIALIZER; 20 21 } // namespace 22 23 void Log(logging::LogSeverity severity, const char* format, ...) { 24 std::string what; 25 26 va_list args; 27 va_start(args, format); 28 base::StringAppendV(&what, format, args); 29 va_end(args); 30 31 DVLOG(1) << what; 32 33 // On thread-safety: LazyInstance guarantees thread-safety for the object 34 // creation. EventLogger::Log() internally maintains the lock. 35 EventLogger* ptr = g_logger.Pointer(); 36 ptr->Log(severity, what); 37 } 38 39 std::vector<EventLogger::Event> GetLogHistory() { 40 EventLogger* ptr = g_logger.Pointer(); 41 return ptr->GetHistory(); 42 } 43 44 } // namespace util 45 } // namespace drive 46
