Request
uv_req_t variants.#include <icy/request.h>
template<typename T, typename E = BasicEvent>
struct RequestDefined in src/base/include/icy/request.h:45
Wrapper class for managing uv_req_t variants.
This class provides safe access to the parent handle in case the handle gets destroyed before the request callback returns, and should be used whenever the handle pointer is accessed via the callback.
Public Attributes
| Return | Name | Description |
|---|---|---|
T | req | The underlying libuv request object. |
std::function< void(const E &)> | callback | Called when the request completes. |
req
T reqDefined in src/base/include/icy/request.h:50
The underlying libuv request object.
callback
std::function< void(const E &)> callbackDefined in src/base/include/icy/request.h:51
Called when the request completes.
Public Methods
| Return | Name | Description |
|---|---|---|
Request inline | Construct the request and set req.data to this so callbacks can recover the wrapper pointer. | |
auto | invoke inline -> std::enable_if_t<!std::is_void< std::invoke_result_t< F, Args... > >::value, int > | Call f with args. If f returns a non-zero libuv error code, the callback is invoked immediately with that status. |
auto | invoke inline -> std::enable_if_t< std::is_void< std::invoke_result_t< F, Args... > >::value > | Call f with args. Overload for void-returning functions; no error checking is performed. |
Request
inline
inline Request()Defined in src/base/include/icy/request.h:55
Construct the request and set req.data to this so callbacks can recover the wrapper pointer.
invoke
inline -> std::enable_if_t<!std::is_void< std::invoke_result_t< F, Args... > >::value, int >
template<typename F, typename... Args> inline auto invoke(F && f, Args &&... args) -> std::enable_if_t<!std::is_void< std::invoke_result_t< F, Args... > >::value, int >Defined in src/base/include/icy/request.h:82
Call f with args. If f returns a non-zero libuv error code, the callback is invoked immediately with that status.
Enabled only when f returns a non-void type (i.e. an error code).
Returns
true (non-zero = success) if f returned 0; false on error.
Parameters
| Parameter | Type | Description |
|---|---|---|
f | F && | libuv function to call. |
args | Args &&... | Arguments forwarded to f. |
invoke
inline -> std::enable_if_t< std::is_void< std::invoke_result_t< F, Args... > >::value >
template<typename F, typename... Args> inline auto invoke(F && f, Args &&... args) -> std::enable_if_t< std::is_void< std::invoke_result_t< F, Args... > >::value >Defined in src/base/include/icy/request.h:97
Call f with args. Overload for void-returning functions; no error checking is performed.
Parameters
| Parameter | Type | Description |
|---|---|---|
f | F && | Function to call. |
args | Args &&... | Arguments forwarded to f. |
Public Static Methods
| Return | Name | Description |
|---|---|---|
void | defaultCallback static inline | Standard libuv completion callback. Invokes callback with the status event and then deletes the Request wrapper. |
defaultCallback
static inline
static inline void defaultCallback(T * req, int status)Defined in src/base/include/icy/request.h:65
Standard libuv completion callback. Invokes callback with the status event and then deletes the Request wrapper.
Parameters
| Parameter | Type | Description |
|---|---|---|
req | T * | The completed libuv request. |
status | int | libuv status code (0 on success, negative on error). |
Public Types
Type
using Type = TDefined in src/base/include/icy/request.h:47
Event
using Event = E