Core: Move to aquamarine (#6608)

Moves Hyprland from wlroots to aquamarine for the backend.

---------

Signed-off-by: Vaxry <vaxry@vaxry.net>
Co-authored-by: Mihai Fufezan <mihai@fufexan.net>
Co-authored-by: Jan Beich <jbeich@FreeBSD.org>
Co-authored-by: vaxerski <vaxerski@users.noreply.github.com>
Co-authored-by: UjinT34 <41110182+UjinT34@users.noreply.github.com>
Co-authored-by: Tom Englund <tomenglund26@gmail.com>
Co-authored-by: Ikalco <73481042+ikalco@users.noreply.github.com>
Co-authored-by: diniamo <diniamo53@gmail.com>

1 files changed, 190 insertions, 0 deletions

diff --git a/src/helpers/sync/SyncTimeline.cpp b/src/helpers/sync/SyncTimeline.cpp
new file mode 100644
index 00000000..352120ea
--- /dev/null
+++ b/src/helpers/sync/SyncTimeline.cpp
@@ -0,0 +1,190 @@
+#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;
+}