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#include "SyncTimeline.hpp"
#include "../../defines.hpp"
#include "../../managers/eventLoop/EventLoopManager.hpp"
#include <xf86drm.h>
#include <sys/eventfd.h>
SP<CSyncTimeline> CSyncTimeline::create(int drmFD_) {
auto timeline = SP<CSyncTimeline>(new CSyncTimeline);
timeline->drmFD = drmFD_;
timeline->self = timeline;
if (drmSyncobjCreate(drmFD_, 0, &timeline->handle)) {
Debug::log(ERR, "CSyncTimeline: failed to create a drm syncobj??");
return nullptr;
}
return timeline;
}
SP<CSyncTimeline> CSyncTimeline::create(int drmFD_, int drmSyncobjFD) {
auto timeline = SP<CSyncTimeline>(new CSyncTimeline);
timeline->drmFD = drmFD_;
timeline->self = timeline;
if (drmSyncobjFDToHandle(drmFD_, drmSyncobjFD, &timeline->handle)) {
Debug::log(ERR, "CSyncTimeline: failed to create a drm syncobj from fd??");
return nullptr;
}
return timeline;
}
CSyncTimeline::~CSyncTimeline() {
if (handle == 0)
return;
drmSyncobjDestroy(drmFD, handle);
}
std::optional<bool> CSyncTimeline::check(uint64_t point, uint32_t flags) {
#ifdef __FreeBSD__
constexpr int ETIME_ERR = ETIMEDOUT;
#else
constexpr int ETIME_ERR = ETIME;
#endif
uint32_t signaled = 0;
int ret = drmSyncobjTimelineWait(drmFD, &handle, &point, 1, 0, flags, &signaled);
if (ret != 0 && ret != -ETIME_ERR) {
Debug::log(ERR, "CSyncTimeline::check: drmSyncobjTimelineWait failed");
return std::nullopt;
}
return ret == 0;
}
static int handleWaiterFD(int fd, uint32_t mask, void* data) {
auto waiter = (CSyncTimeline::SWaiter*)data;
if (mask & (WL_EVENT_HANGUP | WL_EVENT_ERROR)) {
Debug::log(ERR, "handleWaiterFD: eventfd error");
return 0;
}
if (mask & WL_EVENT_READABLE) {
uint64_t value = 0;
if (read(fd, &value, sizeof(value)) <= 0)
Debug::log(ERR, "handleWaiterFD: failed to read from eventfd");
}
wl_event_source_remove(waiter->source);
waiter->source = nullptr;
if (waiter->fn)
waiter->fn();
if (waiter->timeline)
waiter->timeline->removeWaiter(waiter);
return 0;
}
bool CSyncTimeline::addWaiter(const std::function<void()>& waiter, uint64_t point, uint32_t flags) {
auto w = makeShared<SWaiter>();
w->fn = waiter;
w->timeline = self;
int eventFD = eventfd(0, EFD_CLOEXEC);
if (eventFD < 0) {
Debug::log(ERR, "CSyncTimeline::addWaiter: failed to acquire an eventfd");
return false;
}
drm_syncobj_eventfd syncobjEventFD = {
.handle = handle,
.flags = flags,
.point = point,
.fd = eventFD,
};
if (drmIoctl(drmFD, DRM_IOCTL_SYNCOBJ_EVENTFD, &syncobjEventFD) != 0) {
Debug::log(ERR, "CSyncTimeline::addWaiter: drmIoctl failed");
close(eventFD);
return false;
}
w->source = wl_event_loop_add_fd(g_pEventLoopManager->m_sWayland.loop, eventFD, WL_EVENT_READABLE, ::handleWaiterFD, w.get());
if (!w->source) {
Debug::log(ERR, "CSyncTimeline::addWaiter: wl_event_loop_add_fd failed");
close(eventFD);
return false;
}
waiters.emplace_back(w);
return true;
}
void CSyncTimeline::removeWaiter(SWaiter* w) {
if (w->source) {
wl_event_source_remove(w->source);
w->source = nullptr;
}
std::erase_if(waiters, [w](const auto& e) { return e.get() == w; });
}
int CSyncTimeline::exportAsSyncFileFD(uint64_t src) {
int sync = -1;
uint32_t syncHandle = 0;
if (drmSyncobjCreate(drmFD, 0, &syncHandle)) {
Debug::log(ERR, "exportAsSyncFileFD: drmSyncobjCreate failed");
return -1;
}
if (drmSyncobjTransfer(drmFD, syncHandle, 0, handle, src, 0)) {
Debug::log(ERR, "exportAsSyncFileFD: drmSyncobjTransfer failed");
drmSyncobjDestroy(drmFD, syncHandle);
return -1;
}
if (drmSyncobjExportSyncFile(drmFD, syncHandle, &sync)) {
Debug::log(ERR, "exportAsSyncFileFD: drmSyncobjExportSyncFile failed");
drmSyncobjDestroy(drmFD, syncHandle);
return -1;
}
drmSyncobjDestroy(drmFD, syncHandle);
return sync;
}
bool CSyncTimeline::importFromSyncFileFD(uint64_t dst, int fd) {
uint32_t syncHandle = 0;
if (drmSyncobjCreate(drmFD, 0, &syncHandle)) {
Debug::log(ERR, "importFromSyncFileFD: drmSyncobjCreate failed");
return false;
}
if (drmSyncobjImportSyncFile(drmFD, syncHandle, fd)) {
Debug::log(ERR, "importFromSyncFileFD: drmSyncobjImportSyncFile failed");
drmSyncobjDestroy(drmFD, syncHandle);
return false;
}
if (drmSyncobjTransfer(drmFD, handle, dst, syncHandle, 0, 0)) {
Debug::log(ERR, "importFromSyncFileFD: drmSyncobjTransfer failed");
drmSyncobjDestroy(drmFD, syncHandle);
return false;
}
drmSyncobjDestroy(drmFD, syncHandle);
return true;
}
bool CSyncTimeline::transfer(SP<CSyncTimeline> from, uint64_t fromPoint, uint64_t toPoint) {
if (drmFD != from->drmFD) {
Debug::log(ERR, "CSyncTimeline::transfer: cannot transfer timelines between gpus, {} -> {}", from->drmFD, drmFD);
return false;
}
if (drmSyncobjTransfer(drmFD, handle, toPoint, from->handle, fromPoint, 0)) {
Debug::log(ERR, "CSyncTimeline::transfer: drmSyncobjTransfer failed");
return false;
}
return true;
}
void CSyncTimeline::signal(uint64_t point) {
if (drmSyncobjTimelineSignal(drmFD, &handle, &point, 1))
Debug::log(ERR, "CSyncTimeline::signal: drmSyncobjTimelineSignal failed");
}
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