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-rw-r--r--libc/stdlib/malloc/free.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/stdlib/malloc/free.c b/libc/stdlib/malloc/free.c
new file mode 100644
index 000000000..5d5b8f033
--- /dev/null
+++ b/libc/stdlib/malloc/free.c
@@ -0,0 +1,35 @@
+/*
+ * libc/stdlib/malloc-zarg/free.c -- free function
+ *
+ * Copyright (C) 2002 NEC Corporation
+ * Copyright (C) 2002 Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License. See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#include "malloc.h"
+#include "heap.h"
+
+
+void free (void *mem)
+{
+ size_t size;
+
+ mem = (size_t *)mem - 1;
+ size = *(size_t *)mem;
+
+ MALLOC_DEBUG ("free: 0x%lx (base = 0x%lx, total_size = %d)\n",
+ (long)mem + sizeof (size_t), (long)mem, size);
+
+ if (size >= MALLOC_MMAP_THRESHOLD)
+ munmap (mem, size);
+ else
+ __heap_free (&__malloc_heap, mem, size);
+}