1 // Copyright (c) 2012 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 #ifndef CONTENT_BROWSER_TCMALLOC_INTERNALS_REQUEST_JOB_H_ 6 #define CONTENT_BROWSER_TCMALLOC_INTERNALS_REQUEST_JOB_H_ 7 8 #include <map> 9 #include "base/basictypes.h" 10 #include "base/memory/singleton.h" 11 #include "base/process/process.h" 12 #include "build/build_config.h" // USE_TCMALLOC 13 #include "net/url_request/url_request_simple_job.h" 14 15 namespace content { 16 17 class AboutTcmallocOutputs { 18 public: 19 // Returns the singleton instance. 20 static AboutTcmallocOutputs* GetInstance(); 21 22 // Records the output for a specified header string. 23 void SetOutput(const std::string& header, const std::string& output); 24 25 void DumpToHTMLTable(std::string* data); 26 27 // Callback for output returned from a child process. Adds 28 // the output for a canonical process-specific header string that 29 // incorporates the pid. 30 void OnStatsForChildProcess(base::ProcessId pid, 31 int process_type, 32 const std::string& output); 33 34 private: 35 AboutTcmallocOutputs(); 36 ~AboutTcmallocOutputs(); 37 38 // A map of header strings (e.g. "Browser", "Renderer PID 123") 39 // to the tcmalloc output collected for each process. 40 typedef std::map<std::string, std::string> AboutTcmallocOutputsType; 41 AboutTcmallocOutputsType outputs_; 42 43 friend struct DefaultSingletonTraits<AboutTcmallocOutputs>; 44 45 DISALLOW_COPY_AND_ASSIGN(AboutTcmallocOutputs); 46 }; 47 48 class TcmallocInternalsRequestJob : public net::URLRequestSimpleJob { 49 public: 50 TcmallocInternalsRequestJob(net::URLRequest* request, 51 net::NetworkDelegate* network_delegate); 52 53 virtual int GetData(std::string* mime_type, 54 std::string* charset, 55 std::string* data, 56 const net::CompletionCallback& callback) const OVERRIDE; 57 58 protected: 59 virtual ~TcmallocInternalsRequestJob() {} 60 61 private: 62 DISALLOW_IMPLICIT_CONSTRUCTORS(TcmallocInternalsRequestJob); 63 }; 64 65 } // namespace content 66 67 #endif // CONTENT_BROWSER_TCMALLOC_INTERNALS_REQUEST_JOB_H_ 68