FetchContext Struct Reference

The FetchContext class ensures the requestData object remains valid while a fetch operation is pending. More...

#include <qnetworkreplywasmimpl_p.h>

Collaboration diagram for FetchContext:

Public Types
enum class	State {   SCHEDULED , SENT , FINISHED , CANCELED ,   TO_BE_DESTROYED }

Public Member Functions
	FetchContext (QNetworkReplyWasmImplPrivate *networkReply)

Public Attributes
QNetworkReplyWasmImplPrivate *	reply { nullptr }
std::mutex	mutex
QByteArray	requestData
State	state { State::SCHEDULED }

Detailed Description

The FetchContext class ensures the requestData object remains valid while a fetch operation is pending.

Since Emscripten fetch is asynchronous, requestData must persist until one of the final callbacks is invoked. Additionally, there's a potential race condition between the thread scheduling the fetch operation and the one executing it. Since fetch must occur on the main thread due to browser limitations, a mutex safeguards the FetchContext to ensure atomic state transitions.

Definition at line 78 of file qnetworkreplywasmimpl_p.h.

Member Enumeration Documentation

State

enum class FetchContext::State

strong

Enumerator
SCHEDULED
SENT
FINISHED
CANCELED
TO_BE_DESTROYED

Definition at line 80 of file qnetworkreplywasmimpl_p.h.

Constructor & Destructor Documentation

FetchContext()

FetchContext::FetchContext ( QNetworkReplyWasmImplPrivate * networkReply )

inline

Definition at line 82 of file qnetworkreplywasmimpl_p.h.

Member Data Documentation

mutex

std::mutex FetchContext::mutex

Definition at line 85 of file qnetworkreplywasmimpl_p.h.

Referenced by QNetworkReplyWasmImplPrivate::~QNetworkReplyWasmImplPrivate(), and QNetworkReplyWasmImplPrivate::setCanceled().

reply

QNetworkReplyWasmImplPrivate* FetchContext::reply { nullptr }

Definition at line 84 of file qnetworkreplywasmimpl_p.h.

Referenced by QNetworkReplyWasmImplPrivate::~QNetworkReplyWasmImplPrivate().

requestData

QByteArray FetchContext::requestData

Definition at line 86 of file qnetworkreplywasmimpl_p.h.

Referenced by QNetworkReplyWasmImplPrivate::doSendRequest().

state

State FetchContext::state { State::SCHEDULED }

Definition at line 87 of file qnetworkreplywasmimpl_p.h.

Referenced by QNetworkReplyWasmImplPrivate::~QNetworkReplyWasmImplPrivate(), and QNetworkReplyWasmImplPrivate::setCanceled().

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The documentation for this struct was generated from the following file:

• qtbase/src/network/access/qnetworkreplywasmimpl_p.h (9907ef0d64f743fbf269967a65005d490ba0a432)