diff -r 000000000000 -r 6474c204b198 memory/jemalloc/src/test/jemalloc_test.h.in
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memory/jemalloc/src/test/jemalloc_test.h.in	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,53 @@
+/*
+ * This header should be included by tests, rather than directly including
+ * jemalloc/jemalloc.h, because --with-install-suffix may cause the header to
+ * have a different name.
+ */
+#include "jemalloc/jemalloc@install_suffix@.h"
+#include "jemalloc/internal/jemalloc_internal.h"
+
+/* Abstraction layer for threading in tests */
+#ifdef _WIN32
+#include <windows.h>
+
+typedef HANDLE je_thread_t;
+
+void
+je_thread_create(je_thread_t *thread, void *(*proc)(void *), void *arg)
+{
+	LPTHREAD_START_ROUTINE routine = (LPTHREAD_START_ROUTINE)proc;
+	*thread = CreateThread(NULL, 0, routine, arg, 0, NULL);
+	if (*thread == NULL) {
+		malloc_printf("Error in CreateThread()\n");
+		exit(1);
+	}
+}
+
+void
+je_thread_join(je_thread_t thread, void **ret)
+{
+	WaitForSingleObject(thread, INFINITE);
+}
+
+#else
+#include <pthread.h>
+
+typedef pthread_t je_thread_t;
+
+void
+je_thread_create(je_thread_t *thread, void *(*proc)(void *), void *arg)
+{
+
+	if (pthread_create(thread, NULL, proc, arg) != 0) {
+		malloc_printf("Error in pthread_create()\n");
+		exit(1);
+	}
+}
+
+void
+je_thread_join(je_thread_t thread, void **ret)
+{
+
+	pthread_join(thread, ret);
+}
+#endif