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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 #include "mojo/edk/system/mapping_table.h" | 5 #include "mojo/edk/system/mapping_table.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "mojo/edk/embedder/platform_shared_buffer.h" | 8 #include "mojo/edk/embedder/platform_shared_buffer.h" |
9 #include "mojo/edk/system/constants.h" | 9 #include "mojo/edk/system/configuration.h" |
10 | 10 |
11 namespace mojo { | 11 namespace mojo { |
12 namespace system { | 12 namespace system { |
13 | 13 |
14 MappingTable::MappingTable() { | 14 MappingTable::MappingTable() { |
15 } | 15 } |
16 | 16 |
17 MappingTable::~MappingTable() { | 17 MappingTable::~MappingTable() { |
18 // This should usually not be reached (the only instance should be owned by | 18 // This should usually not be reached (the only instance should be owned by |
19 // the singleton |Core|, which lives forever), except in tests. | 19 // the singleton |Core|, which lives forever), except in tests. |
20 } | 20 } |
21 | 21 |
22 MojoResult MappingTable::AddMapping( | 22 MojoResult MappingTable::AddMapping( |
23 scoped_ptr<embedder::PlatformSharedBufferMapping> mapping) { | 23 scoped_ptr<embedder::PlatformSharedBufferMapping> mapping) { |
24 DCHECK(mapping); | 24 DCHECK(mapping); |
25 | 25 |
26 if (address_to_mapping_map_.size() >= kMaxMappingTableSize) | 26 if (address_to_mapping_map_.size() >= |
| 27 GetConfiguration().max_mapping_table_sze) |
27 return MOJO_RESULT_RESOURCE_EXHAUSTED; | 28 return MOJO_RESULT_RESOURCE_EXHAUSTED; |
28 | 29 |
29 uintptr_t address = reinterpret_cast<uintptr_t>(mapping->GetBase()); | 30 uintptr_t address = reinterpret_cast<uintptr_t>(mapping->GetBase()); |
30 DCHECK(address_to_mapping_map_.find(address) == | 31 DCHECK(address_to_mapping_map_.find(address) == |
31 address_to_mapping_map_.end()); | 32 address_to_mapping_map_.end()); |
32 address_to_mapping_map_[address] = mapping.release(); | 33 address_to_mapping_map_[address] = mapping.release(); |
33 return MOJO_RESULT_OK; | 34 return MOJO_RESULT_OK; |
34 } | 35 } |
35 | 36 |
36 MojoResult MappingTable::RemoveMapping(uintptr_t address) { | 37 MojoResult MappingTable::RemoveMapping(uintptr_t address) { |
37 AddressToMappingMap::iterator it = address_to_mapping_map_.find(address); | 38 AddressToMappingMap::iterator it = address_to_mapping_map_.find(address); |
38 if (it == address_to_mapping_map_.end()) | 39 if (it == address_to_mapping_map_.end()) |
39 return MOJO_RESULT_INVALID_ARGUMENT; | 40 return MOJO_RESULT_INVALID_ARGUMENT; |
40 embedder::PlatformSharedBufferMapping* mapping_to_delete = it->second; | 41 embedder::PlatformSharedBufferMapping* mapping_to_delete = it->second; |
41 address_to_mapping_map_.erase(it); | 42 address_to_mapping_map_.erase(it); |
42 delete mapping_to_delete; | 43 delete mapping_to_delete; |
43 return MOJO_RESULT_OK; | 44 return MOJO_RESULT_OK; |
44 } | 45 } |
45 | 46 |
46 } // namespace system | 47 } // namespace system |
47 } // namespace mojo | 48 } // namespace mojo |
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