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bc319d9e88
Okay, I've spent a whole day on this now, and it finally kinda works!
With this patch, CObject and all of its derived classes are reference
counted instead of tree-owned.
The previous, Qt-like model was nice and familiar, but ultimately also
outdated and difficult to reason about.
CObject-derived types should now be stored in RefPtr/NonnullRefPtr and
each class can be constructed using the forwarding construct() helper:
auto widget = GWidget::construct(parent_widget);
Note that construct() simply forwards all arguments to an existing
constructor. It is inserted into each class by the C_OBJECT macro,
see CObject.h to understand how that works.
CObject::delete_later() disappears in this patch, as there is no longer
a single logical owner of a CObject.
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#include <LibThread/BackgroundAction.h>
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#include <LibThread/Thread.h>
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#include <LibThread/Lock.h>
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#include <AK/Queue.h>
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static LibThread::Lockable<Queue<Function<void()>>>* s_all_actions;
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static LibThread::Thread* s_background_thread;
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static int background_thread_func()
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{
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while (true) {
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Function<void()> work_item;
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{
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LOCKER(s_all_actions->lock());
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if (!s_all_actions->resource().is_empty())
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work_item = s_all_actions->resource().dequeue();
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}
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if (work_item)
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work_item();
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else
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sleep(1);
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}
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ASSERT_NOT_REACHED();
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}
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static void init()
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{
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s_all_actions = new LibThread::Lockable<Queue<Function<void()>>>();
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s_background_thread = &LibThread::Thread::construct(background_thread_func).leak_ref();
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s_background_thread->set_name("Background thread");
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s_background_thread->start();
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}
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LibThread::Lockable<Queue<Function<void()>>>& LibThread::BackgroundActionBase::all_actions()
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{
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if (s_all_actions == nullptr)
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init();
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return *s_all_actions;
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}
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LibThread::Thread& LibThread::BackgroundActionBase::background_thread()
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{
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if (s_background_thread == nullptr)
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init();
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return *s_background_thread;
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}
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