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63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MOJO_EDK_SYSTEM_MAPPING_TABLE_H_
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#define MOJO_EDK_SYSTEM_MAPPING_TABLE_H_
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#include <stdint.h>
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#include <memory>
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#include <unordered_map>
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#include <vector>
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#include "mojo/public/c/system/types.h"
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#include "mojo/public/cpp/system/macros.h"
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namespace mojo {
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namespace platform {
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class PlatformSharedBufferMapping;
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}
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namespace system {
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class Core;
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// Test-only function (defined/used in embedder/test_embedder.cc). Declared here
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// so it can be friended.
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namespace internal {
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bool ShutdownCheckNoLeaks(Core*);
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}
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// This class provides the (global) table of memory mappings (owned by |Core|),
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// which maps mapping base addresses to |PlatformSharedBufferMapping|s.
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//
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// This class is NOT thread-safe; locking is left to |Core|.
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class MappingTable {
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public:
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MappingTable();
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~MappingTable();
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// Tries to add a mapping. (Takes ownership of the mapping in all cases; on
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// failure, it will be destroyed.)
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MojoResult AddMapping(
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std::unique_ptr<platform::PlatformSharedBufferMapping> mapping);
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MojoResult RemoveMapping(uintptr_t address);
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private:
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friend bool internal::ShutdownCheckNoLeaks(Core*);
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// TODO(vtl): Should the value type be |std::unique_ptr|?
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using AddressToMappingMap =
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std::unordered_map<uintptr_t, platform::PlatformSharedBufferMapping*>;
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AddressToMappingMap address_to_mapping_map_;
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MOJO_DISALLOW_COPY_AND_ASSIGN(MappingTable);
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};
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} // namespace system
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} // namespace mojo
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#endif // MOJO_EDK_SYSTEM_MAPPING_TABLE_H_
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