summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAlexander Shalamov <alexander.shalamov@mapbox.com>2020-02-02 17:39:18 +0200
committerAlexander Shalamov <alexander.shalamov@mapbox.com>2020-02-03 11:47:37 +0200
commit69ac02f701f81e1bf75c505ba723591927bdd62d (patch)
tree662c842bc9160007f0de42475703895c1e49e214
parent1688130809a892ff199b8fd54d558a1299b7152a (diff)
downloadqtlocation-mapboxgl-69ac02f701f81e1bf75c505ba723591927bdd62d.tar.gz
[core] Use std::list instead of std::map for factory instance
Factory 'get' method can be invoked recursively and stable iterators are required to guarantee safety.
-rw-r--r--src/mbgl/storage/file_source_manager.cpp30
1 files changed, 21 insertions, 9 deletions
diff --git a/src/mbgl/storage/file_source_manager.cpp b/src/mbgl/storage/file_source_manager.cpp
index 6817717f1a..62fd5e8f98 100644
--- a/src/mbgl/storage/file_source_manager.cpp
+++ b/src/mbgl/storage/file_source_manager.cpp
@@ -2,16 +2,26 @@
#include <mbgl/storage/resource_options.hpp>
#include <mbgl/util/string.hpp>
+#include <algorithm>
+#include <list>
#include <map>
#include <mutex>
#include <tuple>
namespace mbgl {
+struct FileSourceInfo {
+ FileSourceInfo(FileSourceType type_, std::string id_, std::weak_ptr<FileSource> fileSource_)
+ : type(type_), id(std::move(id_)), fileSource(std::move(fileSource_)) {}
+
+ FileSourceType type;
+ std::string id;
+ std::weak_ptr<FileSource> fileSource;
+};
+
class FileSourceManager::Impl {
public:
- using Key = std::tuple<FileSourceType, std::string>;
- std::map<Key, std::weak_ptr<FileSource>> fileSources;
+ std::list<FileSourceInfo> fileSources;
std::map<FileSourceType, FileSourceFactory> fileSourceFactories;
std::recursive_mutex mutex;
};
@@ -26,25 +36,27 @@ std::shared_ptr<FileSource> FileSourceManager::getFileSource(FileSourceType type
// Remove released file sources.
for (auto it = impl->fileSources.begin(); it != impl->fileSources.end();) {
- it = it->second.expired() ? impl->fileSources.erase(it) : ++it;
+ it = it->fileSource.expired() ? impl->fileSources.erase(it) : ++it;
}
const auto context = reinterpret_cast<uint64_t>(options.platformContext());
- const std::string optionsKey =
+ std::string id =
options.baseURL() + '|' + options.accessToken() + '|' + options.cachePath() + '|' + util::toString(context);
- const auto key = std::tie(type, optionsKey);
std::shared_ptr<FileSource> fileSource;
- auto tuple = impl->fileSources.find(key);
- if (tuple != impl->fileSources.end()) {
- fileSource = tuple->second.lock();
+ auto fileSourceIt = std::find_if(impl->fileSources.begin(), impl->fileSources.end(), [type, &id](const auto& info) {
+ return info.type == type && info.id == id;
+ });
+ if (fileSourceIt != impl->fileSources.end()) {
+ fileSource = fileSourceIt->fileSource.lock();
}
if (!fileSource) {
auto it = impl->fileSourceFactories.find(type);
if (it != impl->fileSourceFactories.end()) {
assert(it->second);
- impl->fileSources[key] = fileSource = it->second(options);
+ fileSource = it->second(options);
+ impl->fileSources.emplace_back(type, std::move(id), fileSource);
}
}