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Issue 623883002: Revert "Move mojo edk into mojo/edk" (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years, 2 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/constants.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() >= kMaxMappingTableSize)
27 return MOJO_RESULT_RESOURCE_EXHAUSTED;
28
29 uintptr_t address = reinterpret_cast<uintptr_t>(mapping->GetBase());
30 DCHECK(address_to_mapping_map_.find(address) ==
31 address_to_mapping_map_.end());
32 address_to_mapping_map_[address] = mapping.release();
33 return MOJO_RESULT_OK;
34 }
35
36 MojoResult MappingTable::RemoveMapping(uintptr_t address) {
37 AddressToMappingMap::iterator it = address_to_mapping_map_.find(address);
38 if (it == address_to_mapping_map_.end())
39 return MOJO_RESULT_INVALID_ARGUMENT;
40 embedder::PlatformSharedBufferMapping* mapping_to_delete = it->second;
41 address_to_mapping_map_.erase(it);
42 delete mapping_to_delete;
43 return MOJO_RESULT_OK;
44 }
45
46 } // namespace system
47 } // namespace mojo
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