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Modify the getObj() function template

This commit is contained in:
antao 2019-01-16 19:26:45 +08:00
parent 0b53021358
commit f36ccf851d
1 changed files with 12 additions and 20 deletions
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32
lib/inc/drogon/HttpBinder.h
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@ -71,6 +71,16 @@ class HttpBinderBase
virtual size_t paramCount() = 0;
virtual ~HttpBinderBase() {}
};
template <typename T>
T &getControllerObj()
{
//Initialization of function-local statics is guaranteed to occur only once even when
//called from multiple threads, and may be more efficient than the equivalent code using std::call_once.
static T obj;
return obj;
}
typedef std::shared_ptr<HttpBinderBase> HttpBinderBasePtr;
template <typename FUNCTION>
class HttpBinder : public HttpBinderBase
@ -147,10 +157,8 @@ class HttpBinder : public HttpBinderBase
const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> callback,
Values &&... values)
{
static auto className = drogon::DrObjectBase::demangle(typeid(typename traits::class_type).name());
auto &obj=getObj();
assert(obj);
((*obj).*_func)(req, callback, std::move(values)...);
auto &obj = getControllerObj<typename traits::class_type>();
(obj.*_func)(req, callback, std::move(values)...);
};
template <typename... Values,
bool isClassFunction = traits::isClassFunction>
@ -160,22 +168,6 @@ class HttpBinder : public HttpBinderBase
{
_func(req, callback, std::move(values)...);
};
template <bool isClassFunction = traits::isClassFunction>
typename std::enable_if<isClassFunction, const std::shared_ptr<typename traits::class_type> &>::type getObj()
{
//Initialization of function-local statics is guaranteed to occur only once even when
//called from multiple threads, and may be more efficient than the equivalent code using std::call_once.
static auto obj = std::shared_ptr<typename traits::class_type>(new typename traits::class_type);
return obj;
}
template <bool isClassFunction = traits::isClassFunction>
typename std::enable_if<!isClassFunction, const std::shared_ptr<void> &>::type getObj()
{
//This function will never be called
static auto obj = std::shared_ptr<void>(nullptr);
assert(0);
return obj;
}
};
} // namespace internal