diff options
Diffstat (limited to 'src/video_core/host1x/syncpoint_manager.cpp')
-rw-r--r-- | src/video_core/host1x/syncpoint_manager.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/video_core/host1x/syncpoint_manager.cpp b/src/video_core/host1x/syncpoint_manager.cpp new file mode 100644 index 000000000..c606b8bd0 --- /dev/null +++ b/src/video_core/host1x/syncpoint_manager.cpp @@ -0,0 +1,93 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv3 or any later version +// Refer to the license.txt file included. + +#include "video_core/host1x/syncpoint_manager.h" + +namespace Tegra { + +namespace Host1x { + +SyncpointManager::ActionHandle SyncpointManager::RegisterAction( + std::atomic<u32>& syncpoint, std::list<RegisteredAction>& action_storage, u32 expected_value, + std::function<void(void)>& action) { + if (syncpoint.load(std::memory_order_acquire) >= expected_value) { + action(); + return {}; + } + + std::unique_lock<std::mutex> lk(guard); + if (syncpoint.load(std::memory_order_relaxed) >= expected_value) { + action(); + return {}; + } + auto it = action_storage.begin(); + while (it != action_storage.end()) { + if (it->expected_value >= expected_value) { + break; + } + ++it; + } + return action_storage.emplace(it, expected_value, action); +} + +void SyncpointManager::DeregisterAction(std::list<RegisteredAction>& action_storage, + ActionHandle& handle) { + std::unique_lock<std::mutex> lk(guard); + action_storage.erase(handle); +} + +void SyncpointManager::DeregisterGuestAction(u32 syncpoint_id, ActionHandle& handle) { + DeregisterAction(guest_action_storage[syncpoint_id], handle); +} + +void SyncpointManager::DeregisterHostAction(u32 syncpoint_id, ActionHandle& handle) { + DeregisterAction(host_action_storage[syncpoint_id], handle); +} + +void SyncpointManager::IncrementGuest(u32 syncpoint_id) { + Increment(syncpoints_guest[syncpoint_id], wait_guest_cv, guest_action_storage[syncpoint_id]); +} + +void SyncpointManager::IncrementHost(u32 syncpoint_id) { + Increment(syncpoints_host[syncpoint_id], wait_host_cv, host_action_storage[syncpoint_id]); +} + +void SyncpointManager::WaitGuest(u32 syncpoint_id, u32 expected_value) { + Wait(syncpoints_guest[syncpoint_id], wait_guest_cv, expected_value); +} + +void SyncpointManager::WaitHost(u32 syncpoint_id, u32 expected_value) { + Wait(syncpoints_host[syncpoint_id], wait_host_cv, expected_value); +} + +void SyncpointManager::Increment(std::atomic<u32>& syncpoint, std::condition_variable& wait_cv, + std::list<RegisteredAction>& action_storage) { + auto new_value{syncpoint.fetch_add(1, std::memory_order_acq_rel) + 1}; + + std::unique_lock<std::mutex> lk(guard); + auto it = action_storage.begin(); + while (it != action_storage.end()) { + if (it->expected_value > new_value) { + break; + } + it->action(); + it = action_storage.erase(it); + } + wait_cv.notify_all(); +} + +void SyncpointManager::Wait(std::atomic<u32>& syncpoint, std::condition_variable& wait_cv, + u32 expected_value) { + const auto pred = [&]() { return syncpoint.load(std::memory_order_acquire) >= expected_value; }; + if (pred()) { + return; + } + + std::unique_lock<std::mutex> lk(guard); + wait_cv.wait(lk, pred); +} + +} // namespace Host1x + +} // namespace Tegra |