Date: Tue, 11 Jan 2000 10:56:12 -0800 From: Jason Evans <jasone@canonware.com> To: "Richard Seaman, Jr." <dick@tar.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Adding alternate entry points to libc (was Re: Possible libc changes to support LinuxThreads) Message-ID: <20000111105612.B302@sturm.canonware.com> In-Reply-To: <20000111124932.E360@tar.com>; from dick@tar.com on Tue, Jan 11, 2000 at 12:49:32PM -0600 References: <19991209003517.E73529@sturm.canonware.com> <19991209064256.B34152@tar.com> <20000111103527.A302@sturm.canonware.com> <20000111124932.E360@tar.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Jan 11, 2000 at 12:49:32PM -0600, Richard Seaman, Jr. wrote: > On Tue, Jan 11, 2000 at 10:35:27AM -0800, Jason Evans wrote: > > The naming > > approach I'm taking is: > > > > fwrite() <-- Alternate entry point that is used externally unless > > another library overrides it. > > _libc_fwrite() <-- `_libc_' prefix. Alternate entry point for internal > > library use. > > __fwrite() <-- `__' prefix. Actual name. > > > > The reason for a prefix of `__' instead of `_' in the actual name case is > > that using only one underscore would be ambiguous at least in the cases of > > setjmp()/_setjmp() and longjmp()/_longjmp(). > > FYI, the actual name with a single '_' is already defined for syscalls via > SYS.h. Aliasing '__sycall' to '_syscall' is ok, I assume. Or, are you planning > on replacing the '_syscall's? Setjmp/_setjmp are libc calls but not syscalls. > I'm under the impression that linux glibc uses both single and double underscore > symbols, but I don't recall exactly what distinction they make between the two. It would be more consistent to change to `__' for syscalls, but I was planning on leaving the syscalls with `_', and adding `__' aliases, for fear that changing it would violate some "law of libc". Jason To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20000111105612.B302>