Emulator

First, I think that CreateView should return 0 if mmap fails, for uniformity with the windows variant. With this change, a message box appears: "Failed finding a memory base". Second, it would be nice to have it write to stderr and logfile that mmap failed on that file. Which gives something along the lines of this diff:

--- Source/Core/Common/Src/MemArena.cpp.0 2012-06-17 14:20:49.000000000 +0000
+++ Source/Core/Common/Src/MemArena.cpp 2012-06-30 16:48:03.000000000 +0000
@@ -63,7 +63,13 @@ void* MemArena::CreateView(s64 offset, s
#ifdef _WIN32
return MapViewOfFile(hMemoryMapping, FILE_MAP_ALL_ACCESS, 0, (DWORD)((u64)offset), size);
#else

•   return mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, offset);
  

•   void* retval = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, offset);
  

•   if (retval == MAP_FAILED) {
  

•           NOTICE_LOG(MEMMAP, "mmap on %s failed", ram_temp_file);
  

•           return 0;
  

•   } else {
  

•           return retval;
  

•   }
  

#endif
}

Same for CreateViewAt.