JITSymbols: Grab PID from the frontend

This is necessary to get JIT Symbols working under arm64ec/wow64

FEXCore/Source/Common/JitSymbols.cpp

@@ -15,14 +15,9 @@ JITSymbols::~JITSymbols() {
   }
 }
 
-void JITSymbols::InitFile() {
+void JITSymbols::InitFile(uint32_t ProcessPID) {
   // We can't use FILE here since we must be robust against forking processes closing our FD from under us.
-#ifdef __ANDROID__
-  // Android simpleperf looks in /data/local/tmp instead of /tmp
-  const auto PerfMap = fextl::fmt::format("/data/local/tmp/perf-{}.map", getpid());
-#else
-  const auto PerfMap = fextl::fmt::format("/tmp/perf-{}.map", getpid());
-#endif
+  const auto PerfMap = fextl::fmt::format("/tmp/perf-{}.map", ProcessPID);
   fd = open(PerfMap.c_str(), O_CREAT | O_TRUNC | O_WRONLY | O_APPEND, 0644);
 }
 

FEXCore/Source/Common/JitSymbols.h

@@ -35,7 +35,7 @@ public:
   JITSymbols();
   ~JITSymbols();
 
-  void InitFile();
+  void InitFile(uint32_t ProcessPID);
   void RegisterNamedRegion(const void* HostAddr, uint32_t CodeSize, std::string_view Name);
   void RegisterJITSpace(const void* HostAddr, uint32_t CodeSize);
 

FEXCore/Source/Interface/Core/Core.cpp

@@ -90,7 +90,7 @@ ContextImpl::ContextImpl(const FEXCore::HostFeatures& Features)
 
   if (Config.BlockJITNaming() || Config.GlobalJITNaming() || Config.LibraryJITNaming()) {
     // Only initialize symbols file if enabled. Ensures we don't pollute /tmp with empty files.
-    Symbols.InitFile();
+    Symbols.InitFile(Features.ProcessPID);
   }
 
   uint64_t FrequencyCounter = FEXCore::GetCycleCounterFrequency();