63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
#include "run_loop_impl.hpp"
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#include <mbgl/util/async_task.hpp>
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#include <mbgl/util/run_loop.hpp>
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#include <atomic>
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#include <functional>
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namespace mbgl {
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namespace util {
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class AsyncTask::Impl : public RunLoop::Impl::Runnable {
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public:
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Impl(std::function<void()>&& fn)
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: queued(true),
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task(std::move(fn)) {}
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~Impl() {
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queued = true;
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loop->removeRunnable(this);
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}
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void maySend() {
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if (queued) {
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queued = false;
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loop->addRunnable(this);
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}
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}
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TimePoint dueTime() const override { return due; }
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void runTask() override {
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if (!queued) {
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queued = true;
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loop->removeRunnable(this);
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task();
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}
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}
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private:
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// Always expired, run immediately.
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const TimePoint due = Clock::now();
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RunLoop::Impl* loop = reinterpret_cast<RunLoop::Impl*>(RunLoop::getLoopHandle());
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// TODO: Use std::atomic_flag if we ever drop
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// support for ARMv5
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std::atomic<bool> queued;
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std::function<void()> task;
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};
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AsyncTask::AsyncTask(std::function<void()>&& fn)
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: impl(std::make_unique<Impl>(std::move(fn))) {}
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AsyncTask::~AsyncTask() = default;
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void AsyncTask::send() {
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impl->maySend();
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}
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} // namespace util
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} // namespace mbgl
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