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 BASE_THREADING_THREAD_ID_NAME_MANAGER_H_ 6 #define BASE_THREADING_THREAD_ID_NAME_MANAGER_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/base_export.h" 12 #include "base/basictypes.h" 13 #include "base/synchronization/lock.h" 14 #include "base/threading/platform_thread.h" 15 16 template <typename T> struct DefaultSingletonTraits; 17 18 namespace base { 19 20 class BASE_EXPORT ThreadIdNameManager { 21 public: 22 static ThreadIdNameManager* GetInstance(); 23 24 static const char* GetDefaultInternedString(); 25 26 // Register the mapping between a thread |id| and |handle|. 27 void RegisterThread(PlatformThreadHandle::Handle handle, PlatformThreadId id); 28 29 // Set the name for the given id. 30 void SetName(PlatformThreadId id, const char* name); 31 32 // Get the name for the given id. 33 const char* GetName(PlatformThreadId id); 34 35 // Remove the name for the given id. 36 void RemoveName(PlatformThreadHandle::Handle handle, PlatformThreadId id); 37 38 private: 39 friend struct DefaultSingletonTraits<ThreadIdNameManager>; 40 41 typedef std::map<PlatformThreadId, PlatformThreadHandle::Handle> 42 ThreadIdToHandleMap; 43 typedef std::map<PlatformThreadHandle::Handle, std::string*> 44 ThreadHandleToInternedNameMap; 45 typedef std::map<std::string, std::string*> NameToInternedNameMap; 46 47 ThreadIdNameManager(); 48 ~ThreadIdNameManager(); 49 50 // lock_ protects the name_to_interned_name_, thread_id_to_handle_ and 51 // thread_handle_to_interned_name_ maps. 52 Lock lock_; 53 54 NameToInternedNameMap name_to_interned_name_; 55 ThreadIdToHandleMap thread_id_to_handle_; 56 ThreadHandleToInternedNameMap thread_handle_to_interned_name_; 57 58 // Treat the main process specially as there is no PlatformThreadHandle. 59 std::string* main_process_name_; 60 PlatformThreadId main_process_id_; 61 62 DISALLOW_COPY_AND_ASSIGN(ThreadIdNameManager); 63 }; 64 65 } // namespace base 66 67 #endif // BASE_THREADING_THREAD_ID_NAME_MANAGER_H_ 68