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generic cache system

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arthur.jamet
2021-06-01 17:24:32 +02:00
parent 382b830b27
commit ab449ee882
1 changed files with 57 additions and 57 deletions
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114
lib/Ray/sources/Utils/Cache.hpp
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@@ -11,71 +11,71 @@
#include <functional>
namespace RAY {
//! @brief A templated class used to cache ressources, indexed with a string
template<typename T>
class Cache {
public:
//! @brief
Cache(std::function<T(const char *)> dataLoader, std::function<void(T)> dataUnloader):
_dataLoader(dataLoader), _dataUnloader(dataUnloader)
{};
//! @brief A templated class used to cache ressources, indexed with a string
template<typename T>
class Cache {
public:
//! @brief
Cache(std::function<T(const char *)> dataLoader, std::function<void(T)> dataUnloader):
_dataLoader(dataLoader), _dataUnloader(dataUnloader)
{};
//! @brief Default destructor, will destroy ray's data
~Cache() = default;
//! @brief Default destructor, will destroy ray's data
~Cache() = default;
//! @brief default copy constructor
Cache(const Cache &) = default;
//! @brief default copy constructor
Cache(const Cache &) = default;
//! @brief a cache is assignable
Cache &operator=(const Cache &) = default;
//! @brief a cache is assignable
Cache &operator=(const Cache &) = default;
//! @param path path of the file
//! @param path path of the file
//! @return a newly loaded ressource if it hasn't be previously loaded, or one from cache
std::shared_ptr<T>fetch(const std::string &path)
{
if (this->_cache.find(path) == this->_cache.end())
this->_cache.emplace(path, std::shared_ptr<T>(
new T(this->_dataLoader(path.c_str())), [this](T *p) {
this->_dataUnloader(*p);
delete p;
}));
return _cache[path];
};
private:
//! @brief function to call to load data
std::function<T(const char *)> _dataLoader;
std::shared_ptr<T>fetch(const std::string &path)
{
if (this->_cache.find(path) == this->_cache.end())
this->_cache.emplace(path, std::shared_ptr<T>(
new T(this->_dataLoader(path.c_str())), [this](T *p) {
this->_dataUnloader(*p);
delete p;
}));
return _cache[path];
};
private:
//! @brief function to call to load data
std::function<T(const char *)> _dataLoader;
//! @brief function to call when the ray data will be unloaded
std::function<void(T)> _dataUnloader;
//! @brief function to call when the ray data will be unloaded
std::function<void(T)> _dataUnloader;
//! @brief map storing shared ptr of caches
std::unordered_map<std::string, std::shared_ptr<T>> _cache;
};
//! @brief map storing shared ptr of caches
std::unordered_map<std::string, std::shared_ptr<T>> _cache;
};
template<>
class Cache<::ModelAnimation> {
public:
Cache(std::function<::ModelAnimation *(const char *, int *)> dataLoader, std::function<void(::ModelAnimation *, unsigned int)>dataUnloader):
_dataLoader(dataLoader), _dataUnloader(dataUnloader)
{};
std::shared_ptr<::ModelAnimation> fetch(const std::string &path, int *counter)
{
if (this->_cache.find(path) == this->_cache.end())
this->_cache.emplace(path, std::shared_ptr<::ModelAnimation>(
this->_dataLoader(path.c_str(), counter), [this, counter](::ModelAnimation *p) {
this->_dataUnloader(p, *counter);
delete p;
}));
return _cache[path];
};
private:
//! @brief function to call to load data
std::function<::ModelAnimation *(const char *, int *)> _dataLoader;
template<>
class Cache<::ModelAnimation> {
public:
Cache(std::function<::ModelAnimation *(const char *, int *)> dataLoader, std::function<void(::ModelAnimation *, unsigned int)>dataUnloader):
_dataLoader(dataLoader), _dataUnloader(dataUnloader)
{};
std::shared_ptr<::ModelAnimation> fetch(const std::string &path, int *counter)
{
if (this->_cache.find(path) == this->_cache.end())
this->_cache.emplace(path, std::shared_ptr<::ModelAnimation>(
this->_dataLoader(path.c_str(), counter), [this, counter](::ModelAnimation *p) {
this->_dataUnloader(p, *counter);
delete p;
}));
return _cache[path];
};
private:
//! @brief function to call to load data
std::function<::ModelAnimation *(const char *, int *)> _dataLoader;
//! @brief function to call when the ray data will be unloaded
std::function<void(::ModelAnimation *, unsigned int)> _dataUnloader;
//! @brief function to call when the ray data will be unloaded
std::function<void(::ModelAnimation *, unsigned int)> _dataUnloader;
//! @brief map storing shared ptr of caches
std::unordered_map<std::string, std::shared_ptr<::ModelAnimation>> _cache;
};
//! @brief map storing shared ptr of caches
std::unordered_map<std::string, std::shared_ptr<::ModelAnimation>> _cache;
};
}