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#include "EventLoopManager.hpp"
#include "../../debug/Log.hpp"
#include <algorithm>
#include <sys/poll.h>
void CEventLoopManager::enterLoop(wl_display* display, wl_event_loop* wlEventLoop) {
m_sWayland.loop = wlEventLoop;
m_sWayland.display = display;
pollfd pollfds[] = {
{
.fd = wl_event_loop_get_fd(wlEventLoop),
.events = POLLIN,
},
};
std::thread pollThr([this, &pollfds]() {
while (!m_bTerminate) {
int ret = poll(pollfds, 1, 5000 /* 5 seconds, reasonable. Just in case we need to terminate and the signal fails */);
if (ret < 0) {
if (errno == EINTR)
continue;
Debug::log(CRIT, "Polling fds failed with {}", errno);
m_bTerminate = true;
return;
}
for (size_t i = 0; i < 1; ++i) {
if (pollfds[i].revents & POLLHUP) {
Debug::log(CRIT, "Disconnected from pollfd id {}", i);
m_bTerminate = true;
return;
}
}
if (ret != 0) {
{
std::lock_guard<std::mutex> lg2(m_sLoopState.eventRequestMutex);
std::lock_guard<std::mutex> lg(m_sLoopState.loopMutex);
m_sLoopState.event = true;
}
m_sLoopState.cv.notify_all();
}
}
});
std::thread timersThr([this]() {
while (!m_bTerminate) {
// calc nearest thing
m_sTimers.timersMutex.lock();
float least = 1000 * 1000 * 10; // 10s in µs
for (auto& t : m_sTimers.timers) {
const auto TIME = std::clamp(t->leftUs(), 0.f, INFINITY);
if (TIME < least)
least = TIME;
}
m_sTimers.timersMutex.unlock();
if (least > 0) {
std::unique_lock lk(m_sTimers.timersRqMutex);
m_sTimers.cv.wait_for(lk, std::chrono::microseconds((int)least + 1), [this] { return m_sTimers.event; });
m_sTimers.event = false;
}
// notify main
{
std::lock_guard<std::mutex> lg2(m_sLoopState.eventRequestMutex);
std::lock_guard<std::mutex> lg(m_sLoopState.loopMutex);
m_sLoopState.event = true;
}
m_sLoopState.cv.notify_all();
}
});
m_sLoopState.event = true; // let it process once
while (1) {
std::unique_lock lk(m_sLoopState.eventRequestMutex);
m_sLoopState.cv.wait_for(lk, std::chrono::milliseconds(5000), [this] { return m_sLoopState.event; });
if (m_bTerminate)
break;
std::lock_guard<std::mutex> lg(m_sLoopState.loopMutex);
m_sLoopState.event = false;
if (pollfds[0].revents & POLLIN /* wl event loop */) {
wl_display_flush_clients(m_sWayland.display);
if (wl_event_loop_dispatch(m_sWayland.loop, -1) < 0) {
m_bTerminate = true;
break;
}
}
// TODO: don't check timers without the timer thread requesting it
// I tried but it didnt work :/
m_sTimers.timersMutex.lock();
auto timerscpy = m_sTimers.timers;
m_sTimers.timersMutex.unlock();
for (auto& t : timerscpy) {
if (t->passed() && !t->cancelled())
t->call(t);
}
if (m_bTerminate)
break;
}
Debug::log(LOG, "Kicked off the event loop! :(");
m_sTimers.event = true;
m_sTimers.cv.notify_all();
}
void CEventLoopManager::addTimer(std::shared_ptr<CEventLoopTimer> timer) {
m_sTimers.timersMutex.lock();
m_sTimers.timers.push_back(timer);
m_sTimers.timersMutex.unlock();
nudgeTimers();
}
void CEventLoopManager::removeTimer(std::shared_ptr<CEventLoopTimer> timer) {
m_sTimers.timersMutex.lock();
std::erase_if(m_sTimers.timers, [timer](const auto& t) { return timer == t; });
m_sTimers.timersMutex.unlock();
}
void CEventLoopManager::nudgeTimers() {
m_sTimers.event = true;
m_sTimers.cv.notify_all();
}
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