blob: 1b148904f5c8a1b6c59bc653dbef49e08b90300a [file] [log] [blame]
// Copyright 2014 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 MOJO_SYSTEM_MAPPING_TABLE_H_
#define MOJO_SYSTEM_MAPPING_TABLE_H_
#include <stdint.h>
#include <vector>
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "mojo/public/c/system/core.h"
#include "mojo/system/system_impl_export.h"
namespace mojo {
namespace system {
class Core;
class RawSharedBufferMapping;
// Test-only function (defined/used in embedder/test_embedder.cc). Declared here
// so it can be friended.
namespace internal {
bool ShutdownCheckNoLeaks(Core*);
}
// This class provides the (global) table of memory mappings (owned by |Core|),
// which maps mapping base addresses to |RawSharedBuffer::Mapping|s.
//
// This class is NOT thread-safe; locking is left to |Core|.
class MOJO_SYSTEM_IMPL_EXPORT MappingTable {
public:
MappingTable();
~MappingTable();
// Tries to add a mapping. (Takes ownership of the mapping in all cases; on
// failure, it will be destroyed.)
MojoResult AddMapping(scoped_ptr<RawSharedBufferMapping> mapping);
MojoResult RemoveMapping(void* address);
private:
friend bool internal::ShutdownCheckNoLeaks(Core*);
typedef base::hash_map<uintptr_t, RawSharedBufferMapping*>
AddressToMappingMap;
AddressToMappingMap address_to_mapping_map_;
DISALLOW_COPY_AND_ASSIGN(MappingTable);
};
} // namespace system
} // namespace mojo
#endif // MOJO_SYSTEM_MAPPING_TABLE_H_