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dnl * I/O loop function
AC_DEFUN([DOVECOT_IOLOOP], [
have_ioloop=no
if test "$ioloop" = "best" || test "$ioloop" = "epoll"; then
AC_CACHE_CHECK([whether we can use epoll],i_cv_epoll_works,[
AC_TRY_RUN([
#include <sys/epoll.h>
int main()
{
return epoll_create(5) < 1;
}
], [
i_cv_epoll_works=yes
], [
i_cv_epoll_works=no
])
])
if test $i_cv_epoll_works = yes; then
AC_DEFINE(IOLOOP_EPOLL,, [Implement I/O loop with Linux 2.6 epoll()])
have_ioloop=yes
ioloop=epoll
else
if test "$ioloop" = "epoll" ; then
AC_MSG_ERROR([epoll ioloop requested but epoll_create() is not available])
fi
fi
fi
if test "$ioloop" = "best" || test "$ioloop" = "kqueue"; then
if test "$ac_cv_func_kqueue" = yes && test "$ac_cv_func_kevent" = yes; then
AC_DEFINE(IOLOOP_KQUEUE,, [Implement I/O loop with BSD kqueue()])
ioloop=kqueue
have_ioloop=yes
elif test "$ioloop" = "kqueue"; then
AC_MSG_ERROR([kqueue ioloop requested but kqueue() is not available])
fi
fi
if test "$ioloop" = "best" || test "$ioloop" = "poll"; then
AC_CHECK_FUNC(poll, [
AC_DEFINE(IOLOOP_POLL,, [Implement I/O loop with poll()])
ioloop=poll
have_ioloop=yes
])
fi
if test "$have_ioloop" = "no"; then
AC_DEFINE(IOLOOP_SELECT,, [Implement I/O loop with select()])
ioloop="select"
fi
])
|
