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#include <mbgl/style/class_dictionary.hpp>
#include <pthread.h>
namespace mbgl {
ClassDictionary::ClassDictionary() {}
ClassDictionary &ClassDictionary::Get() {
static pthread_once_t store_once = PTHREAD_ONCE_INIT;
static pthread_key_t store_key;
// Create the key.
pthread_once(&store_once, []() {
pthread_key_create(&store_key, [](void *ptr) {
delete reinterpret_cast<ClassDictionary *>(ptr);
});
});
ClassDictionary *ptr = reinterpret_cast<ClassDictionary *>(pthread_getspecific(store_key));
if (ptr == nullptr) {
ptr = new ClassDictionary();
pthread_setspecific(store_key, ptr);
}
return *ptr;
}
ClassID ClassDictionary::lookup(const std::string &class_name) {
auto it = store.find(class_name);
if (it == store.end()) {
// Insert the class name into the store.
ClassID id = ClassID(uint32_t(ClassID::Named) + offset++);
store.emplace(class_name, id);
return id;
} else {
return it->second;
}
}
ClassID ClassDictionary::normalize(ClassID id) {
if (id >= ClassID::Named) {
return ClassID::Named;
} else {
return id;
}
}
} // namespace mbgl
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