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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 #ifndef COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAGER_
     H_ | 5 #ifndef COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAGER_
     H_ | 
| 6 #define COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAGER_
     H_ | 6 #define COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAGER_
     H_ | 
| 7 | 7 | 
| 8 #include <stddef.h> | 8 #include <stddef.h> | 
| 9 #include <stdint.h> | 9 #include <stdint.h> | 
| 10 | 10 | 
| (...skipping 11 matching lines...) Expand all  Loading... | 
| 22 #include "base/memory/ref_counted.h" | 22 #include "base/memory/ref_counted.h" | 
| 23 #include "base/memory/shared_memory.h" | 23 #include "base/memory/shared_memory.h" | 
| 24 #include "base/memory/weak_ptr.h" | 24 #include "base/memory/weak_ptr.h" | 
| 25 #include "base/process/process_handle.h" | 25 #include "base/process/process_handle.h" | 
| 26 #include "base/synchronization/lock.h" | 26 #include "base/synchronization/lock.h" | 
| 27 #include "base/threading/thread_task_runner_handle.h" | 27 #include "base/threading/thread_task_runner_handle.h" | 
| 28 #include "base/trace_event/memory_dump_provider.h" | 28 #include "base/trace_event/memory_dump_provider.h" | 
| 29 #include "components/discardable_memory/common/discardable_memory_export.h" | 29 #include "components/discardable_memory/common/discardable_memory_export.h" | 
| 30 #include "components/discardable_memory/public/interfaces/discardable_shared_mem
     ory_manager.mojom.h" | 30 #include "components/discardable_memory/public/interfaces/discardable_shared_mem
     ory_manager.mojom.h" | 
| 31 | 31 | 
|  | 32 namespace service_manager { | 
|  | 33 struct BindSourceInfo; | 
|  | 34 } | 
|  | 35 | 
| 32 namespace discardable_memory { | 36 namespace discardable_memory { | 
| 33 | 37 | 
| 34 // Implementation of DiscardableMemoryAllocator that allocates and manages | 38 // Implementation of DiscardableMemoryAllocator that allocates and manages | 
| 35 // discardable memory segments for the process which hosts this class, and | 39 // discardable memory segments for the process which hosts this class, and | 
| 36 // for remote processes which request discardable memory from this class via | 40 // for remote processes which request discardable memory from this class via | 
| 37 // IPC. | 41 // IPC. | 
| 38 // This class is thread-safe and instances can safely be used on any thread. | 42 // This class is thread-safe and instances can safely be used on any thread. | 
| 39 class DISCARDABLE_MEMORY_EXPORT DiscardableSharedMemoryManager | 43 class DISCARDABLE_MEMORY_EXPORT DiscardableSharedMemoryManager | 
| 40     : public base::DiscardableMemoryAllocator, | 44     : public base::DiscardableMemoryAllocator, | 
| 41       public base::trace_event::MemoryDumpProvider, | 45       public base::trace_event::MemoryDumpProvider, | 
| 42       public base::MemoryCoordinatorClient { | 46       public base::MemoryCoordinatorClient { | 
| 43  public: | 47  public: | 
| 44   DiscardableSharedMemoryManager(); | 48   DiscardableSharedMemoryManager(); | 
| 45   ~DiscardableSharedMemoryManager() override; | 49   ~DiscardableSharedMemoryManager() override; | 
| 46 | 50 | 
| 47   // Bind the manager to a mojo interface request. | 51   // Bind the manager to a mojo interface request. | 
| 48   void Bind(mojom::DiscardableSharedMemoryManagerRequest request); | 52   void Bind(const service_manager::BindSourceInfo& source_info, | 
|  | 53             mojom::DiscardableSharedMemoryManagerRequest request); | 
| 49 | 54 | 
| 50   // Overridden from base::DiscardableMemoryAllocator: | 55   // Overridden from base::DiscardableMemoryAllocator: | 
| 51   std::unique_ptr<base::DiscardableMemory> AllocateLockedDiscardableMemory( | 56   std::unique_ptr<base::DiscardableMemory> AllocateLockedDiscardableMemory( | 
| 52       size_t size) override; | 57       size_t size) override; | 
| 53 | 58 | 
| 54   // Overridden from base::trace_event::MemoryDumpProvider: | 59   // Overridden from base::trace_event::MemoryDumpProvider: | 
| 55   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, | 60   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, | 
| 56                     base::trace_event::ProcessMemoryDump* pmd) override; | 61                     base::trace_event::ProcessMemoryDump* pmd) override; | 
| 57 | 62 | 
| 58   // This allocates a discardable memory segment for |process_handle|. | 63   // This allocates a discardable memory segment for |process_handle|. | 
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| 146   base::Closure enforce_memory_policy_callback_; | 151   base::Closure enforce_memory_policy_callback_; | 
| 147   bool enforce_memory_policy_pending_; | 152   bool enforce_memory_policy_pending_; | 
| 148   base::WeakPtrFactory<DiscardableSharedMemoryManager> weak_ptr_factory_; | 153   base::WeakPtrFactory<DiscardableSharedMemoryManager> weak_ptr_factory_; | 
| 149 | 154 | 
| 150   DISALLOW_COPY_AND_ASSIGN(DiscardableSharedMemoryManager); | 155   DISALLOW_COPY_AND_ASSIGN(DiscardableSharedMemoryManager); | 
| 151 }; | 156 }; | 
| 152 | 157 | 
| 153 }  // namespace discardable_memory | 158 }  // namespace discardable_memory | 
| 154 | 159 | 
| 155 #endif  // COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAG
     ER_H_ | 160 #endif  // COMPONENTS_DISCARDABLE_MEMORY_SERVICE_DISCARDABLE_SHARED_MEMORY_MANAG
     ER_H_ | 
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