extended ZSTDMT code support for non-MT systems and WIN32 (preliminary)
diff --git a/lib/common/threading.c b/lib/common/threading.c
new file mode 100644
index 0000000..1725650
--- /dev/null
+++ b/lib/common/threading.c
@@ -0,0 +1,73 @@
+
+/**
+ * Copyright (c) 2016 Tino Reichardt
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * You can contact the author at:
+ * - zstdmt source repository: https://github.com/mcmilk/zstdmt
+ */
+
+/**
+ * This file will hold wrapper for systems, which do not support Pthreads
+ */
+
+#ifdef _WIN32
+
+/**
+ * Windows minimalist Pthread Wrapper, based on :
+ * http://www.cse.wustl.edu/~schmidt/win32-cv-1.html
+ */
+
+
+/* === Dependencies === */
+#include <process.h>
+#include <errno.h>
+#include "threading.h"
+
+
+/* === Implementation === */
+
+static unsigned __stdcall worker(void *arg)
+{
+ pthread_t* const thread = (pthread_t*) arg;
+ thread->arg = thread->start_routine(thread->arg);
+ return 0;
+}
+
+int pthread_create(pthread_t* thread, const void* unused,
+ void* (*start_routine) (void*), void* arg)
+{
+ (void)unused;
+ thread->arg = arg;
+ thread->start_routine = start_routine;
+ thread->handle = (HANDLE) _beginthreadex(NULL, 0, worker, thread, 0, NULL);
+
+ if (!thread->handle)
+ return errno;
+ else
+ return 0;
+}
+
+int _pthread_join(pthread_t * thread, void **value_ptr)
+{
+ DWORD result;
+
+ if (!thread->handle) return 0;
+
+ result = WaitForSingleObject(thread->handle, INFINITE);
+ switch (result) {
+ case WAIT_OBJECT_0:
+ if (value_ptr) *value_ptr = thread->arg;
+ return 0;
+ case WAIT_ABANDONED:
+ return EINVAL;
+ default:
+ return GetLastError();
+ }
+}
+
+#endif