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Issue 814543006: Move //mojo/{public, edk} underneath //third_party (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 5 years, 11 months ago
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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
3 // found in the LICENSE file.
4
5 #include "mojo/edk/system/mapping_table.h"
6
7 #include "base/logging.h"
8 #include "mojo/edk/embedder/platform_shared_buffer.h"
9 #include "mojo/edk/system/configuration.h"
10
11 namespace mojo {
12 namespace system {
13
14 MappingTable::MappingTable() {
15 }
16
17 MappingTable::~MappingTable() {
18 // This should usually not be reached (the only instance should be owned by
19 // the singleton |Core|, which lives forever), except in tests.
20 }
21
22 MojoResult MappingTable::AddMapping(
23 scoped_ptr<embedder::PlatformSharedBufferMapping> mapping) {
24 DCHECK(mapping);
25
26 if (address_to_mapping_map_.size() >=
27 GetConfiguration().max_mapping_table_sze)
28 return MOJO_RESULT_RESOURCE_EXHAUSTED;
29
30 uintptr_t address = reinterpret_cast<uintptr_t>(mapping->GetBase());
31 DCHECK(address_to_mapping_map_.find(address) ==
32 address_to_mapping_map_.end());
33 address_to_mapping_map_[address] = mapping.release();
34 return MOJO_RESULT_OK;
35 }
36
37 MojoResult MappingTable::RemoveMapping(uintptr_t address) {
38 AddressToMappingMap::iterator it = address_to_mapping_map_.find(address);
39 if (it == address_to_mapping_map_.end())
40 return MOJO_RESULT_INVALID_ARGUMENT;
41 embedder::PlatformSharedBufferMapping* mapping_to_delete = it->second;
42 address_to_mapping_map_.erase(it);
43 delete mapping_to_delete;
44 return MOJO_RESULT_OK;
45 }
46
47 } // namespace system
48 } // namespace mojo
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