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//===-- MainLoopBase.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/MainLoopBase.h"
#include <chrono>
using namespace lldb;
using namespace lldb_private;
void MainLoopBase::AddCallback(const Callback &callback, TimePoint point) {
bool interrupt_needed;
{
std::lock_guard<std::mutex> lock{m_callback_mutex};
// We need to interrupt the main thread if this callback is scheduled to
// execute at an earlier time than the earliest callback registered so far.
interrupt_needed = m_callbacks.empty() || point < m_callbacks.top().first;
m_callbacks.emplace(point, callback);
}
if (interrupt_needed)
Interrupt();
}
void MainLoopBase::ProcessCallbacks() {
while (true) {
Callback callback;
{
std::lock_guard<std::mutex> lock{m_callback_mutex};
if (m_callbacks.empty() ||
std::chrono::steady_clock::now() < m_callbacks.top().first)
return;
callback = std::move(m_callbacks.top().second);
m_callbacks.pop();
}
callback(*this);
}
}
std::optional<MainLoopBase::TimePoint> MainLoopBase::GetNextWakeupTime() {
std::lock_guard<std::mutex> lock(m_callback_mutex);
if (m_callbacks.empty())
return std::nullopt;
return m_callbacks.top().first;
}
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