1 files changed, 23 insertions, 0 deletions
diff --git a/memory/jemalloc/src/test/include/test/mtx.h b/memory/jemalloc/src/test/include/test/mtx.h
new file mode 100644
index 000000000..58afbc3d1
--- /dev/null
+++ b/memory/jemalloc/src/test/include/test/mtx.h
@@ -0,0 +1,23 @@
+/*
+ * mtx is a slightly simplified version of malloc_mutex.  This code duplication
+ * is unfortunate, but there are allocator bootstrapping considerations that
+ * would leak into the test infrastructure if malloc_mutex were used directly
+ * in tests.
+ */
+
+typedef struct {
+#ifdef _WIN32
+	CRITICAL_SECTION	lock;
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+	os_unfair_lock		lock;
+#elif (defined(JEMALLOC_OSSPIN))
+	OSSpinLock		lock;
+#else
+	pthread_mutex_t		lock;
+#endif
+} mtx_t;
+
+bool	mtx_init(mtx_t *mtx);
+void	mtx_fini(mtx_t *mtx);
+void	mtx_lock(mtx_t *mtx);
+void	mtx_unlock(mtx_t *mtx);