| Commit message (Collapse) | Author | Age | Files | Lines |
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Add support for blocking sockets on secondary threads and on the main
thread with asyncify. This extends the support for websockify tunneled
TCP sockets, which was previously limited to async sockets on the main
thread.
Blocking sockets support is implemented by emulating select() on top
of emscripten's socket notification support. This is requires synchronization
between the blockee threads and the main thread, since we get socket
notification callbacks on the main thread. The synchronized state is held
in g_socketState where the main thread registers socket readiness state and
blocking threads register themselves.
Blocking using asyncify on the main thread is similar to blocking on
a secondary thread, with the exception that the main thread suspends
with qt_asyncify_suspend() instead of waiting on a wait condition.
Change-Id: Idb5a493644e1e6634057dc2f64f2e99e82e3c01e
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
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We support blocking the event dispatcher thread in two cases:
- secondary threads: wait on a wait condition
- main thread: asyncify suspend
Create abstraction which implements both cases under a common API:
bool QEventDispatcherWasm::wait(int timeout)
void QEventDispatcherWasm::wakeUpDispatcherThread()
Make QEventDispatcherWasm::wakeUp() use the new API.
Also refactor the runOnMainThread functionality to provide several variants
- runAsync(fn): makes an async call on the main thread, from the main thread.
- runOnMainThread(fn): runs fn on the main thread, synchronously if
called from the main thread.
- runOnMainThreadAsync(fn): runs a fn on the main thread, always asynchronously
Change-Id: Ia6ac21a162e6b8ea2d71bacf6085beb9567588b5
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
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Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
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The QtCore event dispatcher will be used from QtGui
as well. Add virtual function where window system events
processing can be added.
Pick-to: 6.3
Change-Id: Ia6eda9ae18b2e91189ef9f60b6621d19a83313de
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
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Implement socket notifier support using Emscripten’s
socket callbacks.
This is sufficient for supporting non-blocking (tunneled)
TCP and UDP sockets on the main thread.
Change-Id: Ib9ee2698d029fb94d954c6872f8e118b0aa15499
Reviewed-by: David Skoland <david.skoland@qt.io>
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
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Misc. fixes, including:
Fix a couple of typos in the JavaScript code. Also, macros-
within-macros don’t work, (without resorting to preprocessor
token pasting), so remove the debug output for now.
Limit the exec() “simulateInfiniteLoop” workaround to
top-level application exec() only. This way, asyncify
can be used for nested QEventLoop::exec() calls. (Emscripten
supports one level of suspend only, so we don’t want
to use that for the top-level exec(), but instead use it
for dialogs and such).
Use the new QEventLoop::ProcessEventsFlag::ApplicationExec
enum value to detect the exec() call type.
Change-Id: Ic702bfc31faf2e9f84ac5d3ccf43d067c5c61bf0
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
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Call emscripten_set_main_loop like the old GUI event
dispatcher did, with one difference that requestAnimationFrame
updates are now no longer handled by the event dispatcher.
Change-Id: If02d90ae9c45d7b38999567d733a237af842cded
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Show the warning (and call emscripten_sleep) for the standard
build, but not for the asyncify build.
Change-Id: I695a580ea60897872beee6fa2b6ae70acb9e7dcf
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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Add QEventDispatcherWasm to QtCore. The event dispatcher
supports managing event queue wakeups and timers, both
for the main thread or for secondary threads.
Blocking in processEvents() (using QEventLoop::WaitForMoreEvents)
is supported when running on a secondary thread, or
on the main thread when Qt is built with Emscripten’s
asyncify support.
Code is shared for all both modes as far as possible,
with breakout functions which handle main and secondary
thread as well as asyncify specifics,. Some functions
like wakeUp() can be called from any thread, and needs
to take the calling thread into consideration as well.
The current asyncify implementation in Emscripten is
restricted to one level of suspend, and this restriction
carries over to Qt as well. In practice this means we
support one level of exec()-like API.
Note that this commit does not _enable_ use of the
new event dispatcher. This will be done in separate
commits.
Task-number: QTBUG-76007
Task-number: QTBUG-64020
Change-Id: I77dc9ba34bcff59ef05dd23a46dbf1873cbe6780
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
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