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* configure.in: check pipe2.

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* io.c (rb_cloexec_pipe): use pipe2 if available.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33574 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2011-10-30 13:48:35 +00:00
parent a3efca16a1
commit e7f8c03818
3 changed files with 25 additions and 1 deletions
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18
io.c
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@ -266,7 +266,25 @@ int
rb_cloexec_pipe(int fildes[2])
{
int ret;
#if defined(HAVE_PIPE2)
static int try_pipe2 = 1;
if (try_pipe2) {
ret = pipe2(fildes, O_CLOEXEC);
if (ret != -1)
return ret;
/* pipe2 is available since Linux 2.6.27. */
if (errno == ENOSYS) {
try_pipe2 = 0;
ret = pipe(fildes);
}
}
else {
ret = pipe(fildes);
}
#else
ret = pipe(fildes);
#endif
if (ret == -1) return -1;
#ifdef __CYGWIN__
if (ret == 0 && fildes[1] == -1) {