// 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. #ifndef CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_ #define CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_ #include #include #include "base/files/file_path.h" #include "base/macros.h" #include "base/memory/ref_counted.h" #include "base/memory/ref_counted_memory.h" #include "content/common/content_export.h" namespace base { class FilePath; class WaitableEvent; } namespace content { // This class is intended to dump the tracing results of the shutdown process // to a file before the browser process exits. // It will save the file either into the command line passed // "--trace-shutdown-file=" parameter - or - to "chrometrace.log" in the // current directory. // Use the class with a scoped_ptr to get files written in the destructor. // Note that we cannot use the asynchronous file writer since the // |SequencedWorkerPool| will get killed in the shutdown process. class BrowserShutdownProfileDumper { public: explicit BrowserShutdownProfileDumper(const base::FilePath& dump_file_name); ~BrowserShutdownProfileDumper(); // Returns the file name where we should save the shutdown trace dump to. static base::FilePath GetShutdownProfileFileName(); private: // Writes all traces which happened to disk. void WriteTracesToDisc(); void EndTraceAndFlush(base::WaitableEvent* flush_complete_event); // The callback for the |TraceLog::Flush| function. It saves all traces to // disc. void WriteTraceDataCollected( base::WaitableEvent* flush_complete_event, const scoped_refptr& events_str, bool has_more_events); // Returns true if the dump file is valid. bool IsFileValid(); // Writes a string to the dump file. void WriteString(const std::string& string); // Write a buffer to the dump file. void WriteChars(const char* chars, size_t size); // Closes the dump file. void CloseFile(); // The name of the dump file. const base::FilePath dump_file_name_; // The number of blocks we have already written. int blocks_; // For dumping the content to disc. FILE* dump_file_; DISALLOW_COPY_AND_ASSIGN(BrowserShutdownProfileDumper); }; } // namespace content #endif // CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_