Implement malloc_info(3).
Expose jemalloc stats through the malloc_info(3) interface.
Bug: 16874689
Change-Id: I4358ac283002e60ff161107028d1a3fb1e9afb0a
diff --git a/libc/include/malloc.h b/libc/include/malloc.h
index e6ea276..cb1dd3b 100644
--- a/libc/include/malloc.h
+++ b/libc/include/malloc.h
@@ -24,6 +24,7 @@
*/
#include <sys/cdefs.h>
#include <stddef.h>
+#include <stdio.h>
__BEGIN_DECLS
@@ -53,6 +54,27 @@
extern struct mallinfo mallinfo(void);
+/*
+ * XML structure for malloc_info(3) is in the following format:
+ *
+ * <malloc version="jemalloc-1">
+ * <heap nr="INT">
+ * <allocated-large>INT</allocated-large>
+ * <allocated-huge>INT</allocated-huge>
+ * <allocated-bins>INT</allocated-bins>
+ * <bins-total>INT</bins-total>
+ * <bin nr="INT">
+ * <allocated>INT</allocated>
+ * <nmalloc>INT</nmalloc>
+ * <ndalloc>INT</ndalloc>
+ * </bin>
+ * <!-- more bins -->
+ * </heap>
+ * <!-- more heaps -->
+ * </malloc>
+ */
+extern int malloc_info(int, FILE *);
+
__END_DECLS
#endif /* LIBC_INCLUDE_MALLOC_H_ */