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From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Subject: Re: New daily reports - debugging alloc.c et al
Date: Sat, 6 Aug 2011 17:38:26 +0200	[thread overview]
Message-ID: <20110806153826.GW29562@port70.net> (raw)
In-Reply-To: <20110806143433.GV29562@port70.net>

* Szabolcs Nagy <nsz@port70.net> [2011-08-06 16:34:33 +0200]:
> 	for (i=j=SIZE_MAX/2; i>0; i/=2) {
> 		if ((*p=mmap(NULL, j, PROT_NONE, MAP_PRIVATE, fd, 0)) == MAP_FAILED)
> 			j -= i/2;
> 		else {

i've just realized that

  for (i=j=SIZE_MAX/2+1; i>=PAGE_SIZE; i/=2) {

is better

(if j is not initialized to a power of 2 then i/=2
does not do proper binary search)


  reply	other threads:[~2011-08-06 15:38 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-03 22:14 New daily reports Luka Marčetić
2011-08-03 22:46 ` Solar Designer
2011-08-04 10:51   ` Luka Marčetić
2011-08-04 11:54     ` Solar Designer
2011-08-04 12:01       ` Luka Marčetić
2011-08-04 12:12         ` Solar Designer
2011-08-05  0:02     ` New daily reports - started pthread_eintr.c Luka Marčetić
2011-08-05  0:10       ` Solar Designer
2011-08-06  4:40       ` New daily reports - debugging alloc.c et al Luka Marčetić
2011-08-06 11:15         ` Szabolcs Nagy
2011-08-06 11:50           ` Szabolcs Nagy
2011-08-06 14:34             ` Szabolcs Nagy
2011-08-06 15:38               ` Szabolcs Nagy [this message]
2011-08-07  2:41         ` New daily reports - debugging alloc.c still Luka Marčetić
2011-08-07  2:50           ` Solar Designer
2011-08-07  7:32           ` Rich Felker
2011-08-07 22:25             ` Luka Marčetić
2011-08-09  3:02               ` New daily reports - buf.c Luka Marčetić
2011-08-10  1:34                 ` New daily reports - nothing Luka Marčetić
2011-08-10  1:38                   ` Rich Felker
2011-08-10 11:47                     ` Luka Marčetić
2011-08-10  2:02                   ` Solar Designer
2011-08-10 11:23                     ` Luka Marčetić
2011-08-10 11:56                       ` Solar Designer
2011-08-10 12:13                         ` Luka Marčetić
2011-08-10  2:07                   ` Solar Designer
2011-08-10  2:12                     ` Rich Felker
2011-08-10  4:59                   ` Rich Felker
2011-08-10 12:09                     ` Luka Marčetić
2011-08-10 12:44                     ` Luka Marčetić
2011-08-10 14:25                       ` Rich Felker
2011-08-10 17:21                         ` Luka Marčetić
2011-08-10 17:33                           ` Rich Felker
2011-08-10 18:23                             ` Luka Marčetić
2011-08-10 18:21                               ` Rich Felker
2011-08-10 18:34                                 ` Luka Marčetić
2011-08-10 18:33                                   ` Rich Felker
2011-08-14 20:00                     ` Rich Felker
2011-08-15 14:14                       ` Luka Marčetić

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