[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/stdio/rmtmp.cpp

@@ -0,0 +1,75 @@
+//
+// rmtmp.cpp
+//
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+//
+// Defines _rmtmp(), which closes and removes all temporary files created by
+// tmpfile()
+//
+#include <corecrt_internal_stdio.h>
+
+
+
+_CRT_LINKER_FORCE_INCLUDE(__acrt_tmpfile_terminator);
+
+
+
+// These definitions will cause this object to be linked in whenever the
+// termination code requires it.
+#ifndef CRTDLL
+    extern "C" unsigned __acrt_tmpfile_used = 1;
+#endif
+
+extern "C" unsigned _tempoff = 1;
+extern "C" unsigned _old_pfxlen = 0;
+
+
+
+// Closes and removes all temporary files created by tmpfile().  Returns the
+// number of streams that were closed.
+extern "C" int __cdecl _rmtmp()
+{
+    int count = 0;
+
+    __acrt_lock(__acrt_stdio_index_lock);
+    __try
+    {
+        for (int i = 0; i != _nstream; ++i)
+        {
+            __crt_stdio_stream stream(__piob[i]);
+
+            if (!stream.valid())
+                continue;
+
+            _lock_file(stream.public_stream());
+            __try
+            {
+                if (!stream.is_in_use())
+                    __leave;
+
+                if (stream->_tmpfname == nullptr)
+                    __leave;
+
+                // The stream is still in use.  Close it:
+                _fclose_nolock(stream.public_stream());
+                ++count;
+            }
+            __finally
+            {
+                _unlock_file(stream.public_stream());
+            }
+        }
+    }
+    __finally
+    {
+        __acrt_unlock(__acrt_stdio_index_lock);
+    }
+
+    return count;
+}
+
+extern "C" void __cdecl __acrt_uninitialize_tmpfile()
+{
+    __acrt_stdio_free_tmpfile_name_buffers_nolock();
+    _rmtmp();
+}