Initial import

third_party/dlmalloc/malloc_max_footprint.c

@@ -0,0 +1,14 @@
+#include "third_party/dlmalloc/dlmalloc.h"
+#include "libc/mem/mem.h"
+
+/**
+ * Returns the maximum number of bytes obtained from the system. This
+ * value will be greater than current footprint if deallocated space has
+ * been reclaimed by the system. The peak number of bytes allocated by
+ * malloc, realloc etc., is less than this value. Unlike mallinfo, this
+ * function returns only a precomputed result, so can be called
+ * frequently to monitor memory consumption. Even if locks are otherwise
+ * defined, this function does not use them, so results might not be up
+ * to date.
+ */
+size_t malloc_max_footprint(void) { return gm->max_footprint; }