Initial import

third_party/dlmalloc/malloc_footprint_limit.c

@@ -0,0 +1,15 @@
+#include "libc/limits.h"
+#include "libc/mem/mem.h"
+#include "third_party/dlmalloc/dlmalloc.h"
+
+/**
+ * Returns the number of bytes that the heap is allowed to obtain from
+ * the system, returning the last value returned by
+ * malloc_set_footprint_limit, or the maximum size_t value if never set.
+ * The returned value reflects a permission. There is no guarantee that
+ * this number of bytes can actually be obtained from the system.
+ */
+size_t malloc_footprint_limit(void) {
+  size_t maf = gm->footprint_limit;
+  return maf == 0 ? SIZE_MAX : maf;
+}