Date: Fri, 16 Jul 2010 22:55:33 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Oliver Fromme <olli@lurza.secnetix.de> Cc: deeptech71@gmail.com, freebsd-chat@freebsd.org Subject: Re: is strlen()'s read-4-bytes-ahead a standard? Message-ID: <1DE534FE-4BCB-4524-AB6C-7E758589A9CD@gsoft.com.au> In-Reply-To: <201007160927.o6G9RU34020754@lurza.secnetix.de> References: <201007160927.o6G9RU34020754@lurza.secnetix.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On 16/07/2010, at 18:57, Oliver Fromme wrote: >> Just wondering. >=20 > There's no reason not to read the string as aligned words. > Because they're aligned, there's no risk to accidentally > hit the next VM page after the end of the string. Unless you're calling strlen on something that isn't memory (eg memory = mapped device). Although that would be dumb precisely because you don't know how it's = implemented. Also the compiler would warn you because your mmap'd device pointer = should be declared volatile anyway.. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1DE534FE-4BCB-4524-AB6C-7E758589A9CD>