Attachment 317350 Details for Bug 457508 – Instrumentation patch (prints sizes of malloc/free)

[patch] Instrumentation patch (prints sizes of malloc/free)

debug.patch (text/plain), 1.88 KB, created by Peter Markovski on 2008-09-22 11:33:31 UTC

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Creator: Peter Markovski

Created: 2008-09-22 11:33:31 UTC

Size: 1.88 KB

patch

obsolete

>--- glibc-2.8.o/malloc/malloc.c	2008-04-16 20:55:53.000000000 +0200
>+++ glibc-2.8.n/malloc/malloc.c	2008-09-22 13:00:29.000000000 +0200
>@@ -4112,6 +4112,7 @@ _int_malloc(mstate av, size_t bytes)
>   */
> 
>   checked_request2size(bytes, nb);
>+printf("_int_malloc: bytes:%d nb:%d SIZE_SZ:%d\n", (int)bytes, (int)nb, (int)SIZE_SZ);
> 
>   /*
>     If the size qualifies as a fastbin, first check corresponding bin.
>@@ -4207,6 +4208,7 @@ _int_malloc(mstate av, size_t bytes)
> 	malloc_printerr (check_action, "malloc(): memory corruption",
> 			 chunk2mem (victim));
>       size = chunksize(victim);
>+printf("_int_malloc: 1 size:%d\n", (int)size);
> 
>       /*
>          If a small request, try to use last remainder if it is the
>@@ -4339,6 +4341,7 @@ _int_malloc(mstate av, size_t bytes)
>         while (((unsigned long)(size = chunksize(victim)) <
>                 (unsigned long)(nb)))
>           victim = victim->bk_nextsize;
>+printf("_int_malloc: 2 size:%d\n", (int)size);
> 
> 	/* Avoid removing the first entry for a size so that the skip
> 	   list does not have to be rerouted.  */
>@@ -4432,6 +4435,7 @@ _int_malloc(mstate av, size_t bytes)
> 
>       else {
>         size = chunksize(victim);
>+printf("_int_malloc: 3 size:%d\n", (int)size);
> 
>         /*  We know the first chunk in this bin is big enough to use. */
>         assert((unsigned long)(size) >= (unsigned long)(nb));
>@@ -4500,6 +4504,7 @@ _int_malloc(mstate av, size_t bytes)
> 
>     victim = av->top;
>     size = chunksize(victim);
>+printf("_int_malloc: 4 size:%d\n", (int)size);
> 
>     if ((unsigned long)(size) >= (unsigned long)(nb + MINSIZE)) {
>       remainder_size = size - nb;
>@@ -4561,6 +4566,7 @@ _int_free(mstate av, Void_t* mem)
> 
>   p = mem2chunk(mem);
>   size = chunksize(p);
>+printf("_int_free: chunksize:%d\n", (int)size);
> 
>   /* Little security check which won't hurt performance: the
>      allocator never wrapps around at the end of the address space.

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Attachments on bug 457508: 314319 | 314330 | 317350 | 360703