138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
|
|
* Copyright (C) 2019 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
#include "linkerconfig/section.h"
|
|
|
|
#include <algorithm>
|
|
#include <functional>
|
|
#include <unordered_map>
|
|
#include <utility>
|
|
|
|
#include <android-base/result.h>
|
|
#include <android-base/strings.h>
|
|
|
|
#include "linkerconfig/log.h"
|
|
|
|
using android::base::Join;
|
|
using android::base::Result;
|
|
|
|
namespace android {
|
|
namespace linkerconfig {
|
|
namespace modules {
|
|
void Section::WriteConfig(ConfigWriter& writer) {
|
|
writer.WriteLine("[" + name_ + "]");
|
|
|
|
std::sort(namespaces_.begin(),
|
|
namespaces_.end(),
|
|
[](const auto& lhs, const auto& rhs) -> bool {
|
|
// make "default" a smallest one
|
|
if (lhs.GetName() == "default") return true;
|
|
if (rhs.GetName() == "default") return false;
|
|
return lhs.GetName() < rhs.GetName();
|
|
});
|
|
|
|
if (namespaces_.size() > 1) {
|
|
std::vector<std::string> additional_namespaces;
|
|
for (const auto& ns : namespaces_) {
|
|
if (ns.GetName() != "default") {
|
|
additional_namespaces.push_back(ns.GetName());
|
|
}
|
|
}
|
|
writer.WriteLine("additional.namespaces = " +
|
|
Join(additional_namespaces, ','));
|
|
}
|
|
|
|
for (auto& ns : namespaces_) {
|
|
ns.WriteConfig(writer);
|
|
}
|
|
}
|
|
|
|
Result<void> Section::Resolve(const BaseContext& ctx) {
|
|
std::unordered_map<std::string, std::string> providers;
|
|
for (auto& ns : namespaces_) {
|
|
for (const auto& lib : ns.GetProvides()) {
|
|
if (auto iter = providers.find(lib); iter != providers.end()) {
|
|
return Errorf("duplicate: {} is provided by {} and {} in [{}]",
|
|
lib,
|
|
iter->second,
|
|
ns.GetName(),
|
|
name_);
|
|
}
|
|
providers[lib] = ns.GetName();
|
|
}
|
|
}
|
|
|
|
std::unordered_map<std::string, ApexInfo> candidates_providers;
|
|
for (const auto& apex : ctx.GetApexModules()) {
|
|
for (const auto& lib : apex.provide_libs) {
|
|
candidates_providers[lib] = apex;
|
|
}
|
|
}
|
|
|
|
// Reserve enough space for namespace vector which can be increased maximum as
|
|
// much as available APEX modules. Appending new namespaces without reserving
|
|
// enough space from iteration can crash the process.
|
|
namespaces_.reserve(namespaces_.size() + ctx.GetApexModules().size());
|
|
|
|
auto iter = namespaces_.begin();
|
|
do {
|
|
auto& ns = *iter;
|
|
for (const auto& lib : ns.GetRequires()) {
|
|
if (auto it = providers.find(lib); it != providers.end()) {
|
|
// If required library can be provided by existing namespaces, link to
|
|
// the namespace.
|
|
ns.GetLink(it->second).AddSharedLib(lib);
|
|
} else if (auto it = candidates_providers.find(lib);
|
|
it != candidates_providers.end()) {
|
|
// If required library can be provided by a APEX module, create a new
|
|
// namespace with the APEX and add it to this section.
|
|
auto new_ns = ctx.BuildApexNamespace(it->second, false);
|
|
|
|
// Update providing library map from the new namespace
|
|
for (const auto& new_lib : new_ns.GetProvides()) {
|
|
if (providers.find(new_lib) == providers.end()) {
|
|
providers[new_lib] = new_ns.GetName();
|
|
}
|
|
}
|
|
ns.GetLink(new_ns.GetName()).AddSharedLib(lib);
|
|
namespaces_.push_back(std::move(new_ns));
|
|
} else if (ctx.IsStrictMode()) {
|
|
return Errorf(
|
|
"not found: {} is required by {} in [{}]", lib, ns.GetName(), name_);
|
|
}
|
|
}
|
|
iter++;
|
|
} while (iter != namespaces_.end());
|
|
|
|
return {};
|
|
}
|
|
|
|
Namespace* Section::GetNamespace(const std::string& namespace_name) {
|
|
for (auto& ns : namespaces_) {
|
|
if (ns.GetName() == namespace_name) {
|
|
return &ns;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
std::string Section::GetName() {
|
|
return name_;
|
|
}
|
|
} // namespace modules
|
|
} // namespace linkerconfig
|
|
} // namespace android
|