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Re: [patch] Add various constants to malloc_info output.
- From: DJ Delorie <dj at redhat dot com>
- To: Florian Weimer <fw at deneb dot enyo dot de>
- Cc: libc-alpha at sourceware dot org
- Date: Mon, 13 May 2019 20:23:11 -0400
- Subject: Re: [patch] Add various constants to malloc_info output.
Florian Weimer <fw@deneb.enyo.de> writes:
> I think this needs to be conditional on USE_TCACHE.
Conditionaled wrt the constant being printed. I think this is a more
sensible rule for this type of "all constants" logic - it makes the list
and its conditionals independent of when they get defined.
* malloc/malloc.c (__malloc_info): Add various constants to the
output.
diff --git a/malloc/malloc.c b/malloc/malloc.c
index b8baaa2706..3a83523fb6 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -5387,6 +5387,18 @@ __malloc_info (int options, FILE *fp)
fputs ("<malloc version=\"1\">\n", fp);
+ fprintf (fp, "<malloc_alignment bytes=\"%ld\" />\n", (long) MALLOC_ALIGNMENT);
+ fprintf (fp, "<min_chunk_size bytes=\"%ld\" />\n", (long) MIN_CHUNK_SIZE);
+ fprintf (fp, "<max_fast_alloc bytes=\"%ld\" />\n", (long) MAX_FAST_SIZE);
+#ifdef MAX_TCACHE_SIZE
+ fprintf (fp, "<max_tcache_alloc bytes=\"%ld\" />\n", (long) MAX_TCACHE_SIZE);
+#endif
+ fprintf (fp, "<min_large_alloc bytes=\"%ld\" />\n", (long) MIN_LARGE_SIZE);
+ fprintf (fp, "<default_mmap_threshold bytes=\"%ld\" />\n", (long) DEFAULT_MMAP_THRESHOLD);
+ fprintf (fp, "<max_mmap_threshold bytes=\"%ld\" />\n", (long) DEFAULT_MMAP_THRESHOLD_MAX);
+ fprintf (fp, "<heap_min_size bytes=\"%ld\" />\n", (long) HEAP_MIN_SIZE);
+ fprintf (fp, "<heap_max_size bytes=\"%ld\" />\n", (long) HEAP_MAX_SIZE);
+
/* Iterate over all arenas currently in use. */
mstate ar_ptr = &main_arena;
do