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move the previous comment.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-12-02 10:00:10 +00:00
parent db197f296f
commit e44a6c4708
2 changed files with 28 additions and 26 deletions

View file

@ -201,32 +201,6 @@ int rb_sourceline(void);
const char *rb_sourcefile(void);
#if defined(NFDBITS) && defined(HAVE_RB_FD_INIT)
/*
* several Unix platform supports file descriptors bigger than FD_SETSIZE
* in select(2) system call.
*
* - Linux 2.2.12 (?)
* - NetBSD 1.2 (src/sys/kern/sys_generic.c:1.25)
* select(2) documents how to allocate fd_set dynamically.
* http://netbsd.gw.com/cgi-bin/man-cgi?select++NetBSD-4.0
* - FreeBSD 2.2 (src/sys/kern/sys_generic.c:1.19)
* - OpenBSD 2.0 (src/sys/kern/sys_generic.c:1.4)
* select(2) documents how to allocate fd_set dynamically.
* http://www.openbsd.org/cgi-bin/man.cgi?query=select&manpath=OpenBSD+4.4
* - HP-UX documents how to allocate fd_set dynamically.
* http://docs.hp.com/en/B2355-60105/select.2.html
* - Solaris 8 has select_large_fdset
*
* When fd_set is not big enough to hold big file descriptors,
* it should be allocated dynamically.
* Note that this assumes fd_set is structured as bitmap.
*
* rb_fd_init allocates the memory.
* rb_fd_term free the memory.
* rb_fd_set may re-allocates bitmap.
*/
typedef struct {
int maxfd;
fd_set *fdset;

View file

@ -2003,6 +2003,34 @@ rb_thread_priority_set(VALUE thread, VALUE prio)
/* for IO */
#if defined(NFDBITS) && defined(HAVE_RB_FD_INIT)
/*
* several Unix platform supports file descriptors bigger than FD_SETSIZE
* in select(2) system call.
*
* - Linux 2.2.12 (?)
* - NetBSD 1.2 (src/sys/kern/sys_generic.c:1.25)
* select(2) documents how to allocate fd_set dynamically.
* http://netbsd.gw.com/cgi-bin/man-cgi?select++NetBSD-4.0
* - FreeBSD 2.2 (src/sys/kern/sys_generic.c:1.19)
* - OpenBSD 2.0 (src/sys/kern/sys_generic.c:1.4)
* select(2) documents how to allocate fd_set dynamically.
* http://www.openbsd.org/cgi-bin/man.cgi?query=select&manpath=OpenBSD+4.4
* - HP-UX documents how to allocate fd_set dynamically.
* http://docs.hp.com/en/B2355-60105/select.2.html
* - Solaris 8 has select_large_fdset
*
* When fd_set is not big enough to hold big file descriptors,
* it should be allocated dynamically.
* Note that this assumes fd_set is structured as bitmap.
*
* rb_fd_init allocates the memory.
* rb_fd_term free the memory.
* rb_fd_set may re-allocates bitmap.
*
* So rb_fd_set doesn't reject file descriptors bigger than FD_SETSIZE.
*/
void
rb_fd_init(volatile rb_fdset_t *fds)
{