early-access version 1255

src/core/hle/kernel/time_manager.cpp

@@ -0,0 +1,70 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/core_timing_util.h"
+#include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/thread.h"
+#include "core/hle/kernel/time_manager.h"
+
+namespace Kernel {
+
+TimeManager::TimeManager(Core::System& system_) : system{system_} {
+    time_manager_event_type = Core::Timing::CreateEvent(
+        "Kernel::TimeManagerCallback",
+        [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
+            const KScopedSchedulerLock lock(system.Kernel());
+            const auto proper_handle = static_cast<Handle>(thread_handle);
+
+            std::shared_ptr<Thread> thread;
+            {
+                std::lock_guard lock{mutex};
+                if (cancelled_events[proper_handle]) {
+                    return;
+                }
+                thread = system.Kernel().RetrieveThreadFromGlobalHandleTable(proper_handle);
+            }
+
+            if (thread) {
+                // Thread can be null if process has exited
+                thread->OnWakeUp();
+            }
+        });
+}
+
+void TimeManager::ScheduleTimeEvent(Handle& event_handle, Thread* timetask, s64 nanoseconds) {
+    std::lock_guard lock{mutex};
+    event_handle = timetask->GetGlobalHandle();
+    if (nanoseconds > 0) {
+        ASSERT(timetask);
+        ASSERT(timetask->GetStatus() != ThreadStatus::Ready);
+        ASSERT(timetask->GetStatus() != ThreadStatus::WaitMutex);
+        system.CoreTiming().ScheduleEvent(std::chrono::nanoseconds{nanoseconds},
+                                          time_manager_event_type, event_handle);
+    } else {
+        event_handle = InvalidHandle;
+    }
+    cancelled_events[event_handle] = false;
+}
+
+void TimeManager::UnscheduleTimeEvent(Handle event_handle) {
+    std::lock_guard lock{mutex};
+    if (event_handle == InvalidHandle) {
+        return;
+    }
+    system.CoreTiming().UnscheduleEvent(time_manager_event_type, event_handle);
+    cancelled_events[event_handle] = true;
+}
+
+void TimeManager::CancelTimeEvent(Thread* time_task) {
+    std::lock_guard lock{mutex};
+    const Handle event_handle = time_task->GetGlobalHandle();
+    UnscheduleTimeEvent(event_handle);
+}
+
+} // namespace Kernel