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https://github.com/hedge-dev/UnleashedRecomp.git
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Cross-platform event implementation. (#47)
This commit is contained in:
Skyth (Asilkan)
GitHub
parent
4770e85573
commit
2bcaa61d42
1 changed files with 171 additions and 114 deletions
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@ -16,6 +16,129 @@
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#include <ntstatus.h>
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struct Event final : KernelObject, HostObject<XKEVENT>
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{
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bool manualReset;
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std::atomic<bool> signaled;
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Event(XKEVENT* header)
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: manualReset(!header->Type), signaled(!!header->SignalState)
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{
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}
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Event(bool manualReset, bool initialState)
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: manualReset(manualReset), signaled(initialState)
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{
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}
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uint32_t Wait(uint32_t timeout) override
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{
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if (timeout == 0)
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{
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if (!signaled)
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return STATUS_TIMEOUT;
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if (!manualReset)
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signaled = false;
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}
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else if (timeout == INFINITE)
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{
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signaled.wait(false);
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if (!manualReset)
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signaled = false;
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}
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else
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{
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assert(false && "Unhandled timeout value.");
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}
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return STATUS_SUCCESS;
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}
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bool Set()
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{
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signaled = true;
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signaled.notify_all();
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return TRUE;
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}
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bool Reset()
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{
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signaled = false;
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return TRUE;
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}
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};
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static std::atomic<uint32_t> g_keSetEventGeneration;
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struct Semaphore final : KernelObject, HostObject<XKSEMAPHORE>
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{
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std::atomic<uint32_t> count;
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uint32_t maximumCount;
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Semaphore(XKSEMAPHORE* semaphore)
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: count(semaphore->Header.SignalState), maximumCount(semaphore->Limit)
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{
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}
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Semaphore(uint32_t count, uint32_t maximumCount)
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: count(count), maximumCount(maximumCount)
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{
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}
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uint32_t Wait(uint32_t timeout) override
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{
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if (timeout == 0)
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{
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uint32_t currentCount = count.load();
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if (currentCount != 0)
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{
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if (count.compare_exchange_weak(currentCount, currentCount - 1))
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return STATUS_SUCCESS;
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}
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return STATUS_TIMEOUT;
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}
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else if (timeout == INFINITE)
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{
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uint32_t currentCount;
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while (true)
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{
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currentCount = count.load();
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if (currentCount != 0)
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{
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if (count.compare_exchange_weak(currentCount, currentCount - 1))
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return STATUS_SUCCESS;
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}
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else
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{
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count.wait(0);
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}
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}
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return STATUS_SUCCESS;
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}
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else
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{
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assert(false && "Unhandled timeout value.");
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return STATUS_TIMEOUT;
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}
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}
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void Release(uint32_t releaseCount, uint32_t* previousCount)
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{
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if (previousCount != nullptr)
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*previousCount = count;
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assert(count + releaseCount <= maximumCount);
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count += releaseCount;
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count.notify_all();
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}
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};
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inline void CloseKernelObject(XDISPATCHER_HEADER& header)
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{
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if (header.WaitListHead.Flink != OBJECT_SIGNATURE)
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@ -265,19 +388,10 @@ DWORD NtWaitForSingleObjectEx(DWORD Handle, DWORD WaitMode, DWORD Alertable, XLP
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}
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else
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{
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const auto status = WaitForSingleObjectEx((HANDLE)Handle, timeout, Alertable);
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if (status == WAIT_IO_COMPLETION)
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{
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return STATUS_USER_APC;
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}
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else if (status == WAIT_TIMEOUT)
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{
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return STATUS_TIMEOUT;
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}
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return STATUS_SUCCESS;
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assert(false && "Unrecognized handle value.");
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}
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return STATUS_TIMEOUT;
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}
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void NtWriteFile()
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@ -367,9 +481,9 @@ void MmQueryStatistics()
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LOG_UTILITY("!!! STUB !!!");
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}
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uint32_t NtCreateEvent(uint32_t* handle, void* objAttributes, uint32_t eventType, uint32_t initialState)
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uint32_t NtCreateEvent(be<uint32_t>* handle, void* objAttributes, uint32_t eventType, uint32_t initialState)
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{
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*handle = ByteSwap((uint32_t)CreateEventA(nullptr, !eventType, !!initialState, nullptr));
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*handle = GetKernelHandle(CreateKernelObject<Event>(!eventType, !!initialState));
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return 0;
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}
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@ -529,92 +643,6 @@ uint32_t KeSetAffinityThread(DWORD Thread, DWORD Affinity, XLPDWORD lpPreviousAf
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return 0;
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}
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struct Event final : KernelObject, HostObject<XKEVENT>
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{
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HANDLE handle;
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Event(XKEVENT* header)
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{
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handle = CreateEventA(nullptr, !header->Type, !!header->SignalState, nullptr);
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}
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bool Set()
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{
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return SetEvent(handle);
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}
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bool Reset()
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{
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return ResetEvent(handle);
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}
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};
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struct Semaphore final : KernelObject, HostObject<XKSEMAPHORE>
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{
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std::atomic<uint32_t> count;
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uint32_t maximumCount;
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Semaphore(XKSEMAPHORE* semaphore)
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: count(semaphore->Header.SignalState), maximumCount(semaphore->Limit)
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{
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}
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Semaphore(uint32_t count, uint32_t maximumCount)
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: count(count), maximumCount(maximumCount)
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{
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}
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uint32_t Wait(uint32_t timeout) override
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{
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if (timeout == 0)
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{
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uint32_t currentCount = count.load();
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if (currentCount != 0)
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{
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if (count.compare_exchange_weak(currentCount, currentCount - 1))
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return STATUS_SUCCESS;
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}
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return STATUS_TIMEOUT;
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}
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else if (timeout == INFINITE)
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{
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uint32_t currentCount;
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while (true)
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{
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currentCount = count.load();
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if (currentCount != 0)
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{
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if (count.compare_exchange_weak(currentCount, currentCount - 1))
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return STATUS_SUCCESS;
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}
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else
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{
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count.wait(0);
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}
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}
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return STATUS_SUCCESS;
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}
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else
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{
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assert(false && "Unhandled timeout value.");
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return STATUS_TIMEOUT;
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}
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}
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void Release(uint32_t releaseCount, uint32_t* previousCount)
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{
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if (previousCount != nullptr)
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*previousCount = count;
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assert(count + releaseCount <= maximumCount);
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count += releaseCount;
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count.notify_all();
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}
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};
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void RtlLeaveCriticalSection(XRTL_CRITICAL_SECTION* cs)
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{
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cs->RecursionCount--;
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@ -936,7 +964,12 @@ void KeUnlockL2()
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bool KeSetEvent(XKEVENT* pEvent, DWORD Increment, bool Wait)
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{
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return QueryKernelObject<Event>(*pEvent)->Set();
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bool result = QueryKernelObject<Event>(*pEvent)->Set();
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++g_keSetEventGeneration;
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g_keSetEventGeneration.notify_all();
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return result;
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}
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bool KeResetEvent(XKEVENT* pEvent)
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@ -953,7 +986,7 @@ DWORD KeWaitForSingleObject(XDISPATCHER_HEADER* Object, DWORD WaitReason, DWORD
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{
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case 0:
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case 1:
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WaitForSingleObjectEx(QueryKernelObject<Event>(*Object)->handle, timeout, Alertable);
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QueryKernelObject<Event>(*Object)->Wait(timeout);
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break;
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case 5:
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@ -1245,9 +1278,10 @@ void MmQueryAllocationSize()
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LOG_UTILITY("!!! STUB !!!");
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}
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uint32_t NtClearEvent(uint32_t handle, uint32_t* previousState)
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uint32_t NtClearEvent(Event* handle, uint32_t* previousState)
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{
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return ResetEvent((HANDLE)handle) ? 0 : 0xFFFFFFFF;
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handle->Reset();
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return 0;
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}
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uint32_t NtResumeThread(GuestThreadHandle* hThread, uint32_t* suspendCount)
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@ -1260,9 +1294,10 @@ uint32_t NtResumeThread(GuestThreadHandle* hThread, uint32_t* suspendCount)
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return S_OK;
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}
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uint32_t NtSetEvent(uint32_t handle, uint32_t* previousState)
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uint32_t NtSetEvent(Event* handle, uint32_t* previousState)
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{
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return SetEvent((HANDLE)handle) ? 0 : 0xFFFFFFFF;
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handle->Set();
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return 0;
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}
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NTSTATUS NtCreateSemaphore(XLPDWORD Handle, XOBJECT_ATTRIBUTES* ObjectAttributes, DWORD InitialCount, DWORD MaximumCount)
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@ -1431,19 +1466,41 @@ void NetDll_XNetGetTitleXnAddr()
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DWORD KeWaitForMultipleObjects(DWORD Count, xpointer<XDISPATCHER_HEADER>* Objects, DWORD WaitType, DWORD WaitReason, DWORD WaitMode, DWORD Alertable, XLPQWORD Timeout)
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{
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// TODO: create actual objects by type.
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// FIXME: This function is only accounting for events.
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const uint64_t timeout = GuestTimeoutToMilliseconds(Timeout);
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assert(timeout == INFINITE);
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thread_local std::vector<HANDLE> events;
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events.resize(Count);
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for (size_t i = 0; i < Count; i++)
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if (WaitType == 0) // Wait all
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{
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assert(Objects[i]->Type <= 1);
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events[i] = QueryKernelObject<Event>(*Objects[i].get())->handle;
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for (size_t i = 0; i < Count; i++)
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QueryKernelObject<Event>(*Objects[i])->Wait(timeout);
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}
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else
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{
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thread_local std::vector<Event*> s_events;
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s_events.resize(Count);
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for (size_t i = 0; i < Count; i++)
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s_events[i] = QueryKernelObject<Event>(*Objects[i]);
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while (true)
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{
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uint32_t generation = g_keSetEventGeneration.load();
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for (size_t i = 0; i < Count; i++)
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{
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if (s_events[i]->Wait(0) == STATUS_SUCCESS)
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{
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return WAIT_OBJECT_0 + i;
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}
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}
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g_keSetEventGeneration.wait(generation);
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}
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}
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return WaitForMultipleObjectsEx(Count, events.data(), WaitType == 0, timeout, Alertable);
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return STATUS_SUCCESS;
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}
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uint32_t KeRaiseIrqlToDpcLevel()
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