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WOW64: Keep track of all created threads on the frontend

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This is necessary so that code can be invalidated across all threads
rather than just the initiator on any event that triggers invalidation.
This commit is contained in:
Billy Laws 2024-02-17 23:19:05 +00:00
parent 5cb11aed3d
commit d92580bccf
1 changed files with 12 additions and 10 deletions
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22
Source/Windows/WOW64/Module.cpp
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@ -36,7 +36,7 @@ $end_info$
#include <atomic>
#include <mutex>
#include <utility>
#include <unordered_set>
#include <unordered_map>
#include <ntstatus.h>
#include <windef.h>
#include <winternl.h>
@ -97,8 +97,9 @@ fextl::unique_ptr<WowSyscallHandler> SyscallHandler;
FEX::Windows::InvalidationTracker InvalidationTracker;
std::optional<FEX::Windows::CPUFeatures> CPUFeatures;
std::mutex ThreadSuspendLock;
std::unordered_set<DWORD> InitializedWOWThreads; // Set of TIDs, `ThreadSuspendLock` must be locked when accessing
std::mutex ThreadCreationMutex;
// Map of TIDs to their FEX thread state, `ThreadCreationMutex` must be locked when accessing
std::unordered_map<DWORD, FEXCore::Core::InternalThreadState*> Threads;
std::pair<NTSTATUS, TLS> GetThreadTLS(HANDLE Thread) {
THREAD_BASIC_INFORMATION Info;
@ -426,10 +427,11 @@ void BTCpuProcessInit() {
}
NTSTATUS BTCpuThreadInit() {
GetTLS().ThreadState() = CTX->CreateThread(0, 0);
auto* Thread = CTX->CreateThread(0, 0);
GetTLS().ThreadState() = Thread;
std::scoped_lock Lock(ThreadSuspendLock);
InitializedWOWThreads.emplace(GetCurrentThreadId());
std::scoped_lock Lock(ThreadCreationMutex);
Threads.emplace(GetCurrentThreadId(), Thread);
return STATUS_SUCCESS;
}
@ -446,8 +448,8 @@ NTSTATUS BTCpuThreadTerm(HANDLE Thread) {
}
const auto ThreadTID = reinterpret_cast<uint64_t>(Info.ClientId.UniqueThread);
std::scoped_lock Lock(ThreadSuspendLock);
InitializedWOWThreads.erase(ThreadTID);
std::scoped_lock Lock(ThreadCreationMutex);
Threads.erase(ThreadTID);
}
CTX->DestroyThread(TLS.ThreadState());
@ -550,10 +552,10 @@ NTSTATUS BTCpuSuspendLocalThread(HANDLE Thread, ULONG* Count) {
return Err;
}
std::scoped_lock Lock(ThreadSuspendLock);
std::scoped_lock Lock(ThreadCreationMutex);
// If the thread hasn't yet been initialized, suspend it without special handling as it wont yet have entered the JIT
if (!InitializedWOWThreads.contains(ThreadTID)) {
if (!Threads.contains(ThreadTID)) {
return NtSuspendThread(Thread, Count);
}