403 строки
11 KiB
Plaintext
403 строки
11 KiB
Plaintext
dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2005 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2008 Sun Microsystems, Inc. All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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dnl
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dnl $HEADER$
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dnl
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AC_DEFUN([OMPI_SETUP_LIBEVENT],[
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dnl OMPI: don't use AC_LIBOBJ
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sources=
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dnl Check for optional stuff
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AC_ARG_WITH(event-rtsig,
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AC_HELP_STRING([--with-event-rtsig],
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[compile with support for real time signals (experimental)]),
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[usertsig=yes], [usertsig=no])
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dnl Checks for libraries.
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dnl AC_CHECK_LIB(socket, socket)
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dnl Checks for header files.
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AC_HEADER_STDC
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AC_CHECK_HEADERS(fcntl.h stdarg.h inttypes.h stdint.h poll.h signal.h unistd.h sys/epoll.h sys/time.h sys/queue.h sys/event.h sys/ioctl.h sys/devpoll.h)
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if test "x$ac_cv_header_sys_queue_h" = "xyes"; then
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AC_MSG_CHECKING(for TAILQ_FOREACH in sys/queue.h)
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AC_EGREP_CPP(yes,
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[
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#include <sys/queue.h>
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#ifdef TAILQ_FOREACH
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yes
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#endif
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], [AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_TAILQFOREACH, 1,
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[Define if TAILQ_FOREACH is defined in <sys/queue.h>])],
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AC_MSG_RESULT(no)
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)
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fi
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if test "x$ac_cv_header_sys_time_h" = "xyes"; then
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AC_MSG_CHECKING(for timeradd in sys/time.h)
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AC_EGREP_CPP(yes,
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[
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#include <sys/time.h>
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#ifdef timeradd
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yes
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#endif
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], [ AC_DEFINE(HAVE_TIMERADD, 1,
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[Define if timeradd is defined in <sys/time.h>])
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AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
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)
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fi
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dnl Checks for typedefs, structures, and compiler characteristics.
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AC_HEADER_TIME
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dnl Checks for library functions.
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AC_CHECK_FUNCS(gettimeofday vasprintf fcntl)
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AC_MSG_CHECKING(for F_SETFD in fcntl.h)
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AC_EGREP_CPP(yes,
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[
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#define _GNU_SOURCE
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#include <fcntl.h>
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#ifdef F_SETFD
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yes
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#endif
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], [ AC_DEFINE(HAVE_SETFD, 1,
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[Define if F_SETFD is defined in <fcntl.h>])
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AC_MSG_RESULT(yes) ], AC_MSG_RESULT(no))
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needsignal=no
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haveselect=no
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AC_CHECK_FUNCS(select, [haveselect=yes], )
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if test "x$haveselect" = "xyes" ; then
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# OMPI: Don't use AC_LIBOBJ
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sources="select.c $sources"
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needsignal=yes
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fi
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havepoll=no
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havertsig=no
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AC_CHECK_FUNCS(poll, [havepoll=yes], )
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case "$host" in
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*apple-darwin*)
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haveworkingpoll=0
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;;
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*)
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if test "$havepoll" = "yes" ; then
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haveworkingpoll=1
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else
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haveworkingpoll=0
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fi
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;;
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esac
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AC_DEFINE_UNQUOTED([HAVE_WORKING_POLL], [$haveworkingpoll],
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[Whether poll works for file descriptors and devices])
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if test "x$havepoll" = "xyes" -a "$haveworkingpoll" = "1" ; then
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# OMPI: Don't use AC_LIBOBJ
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sources="poll.c $sources"
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needsignal=yes
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if test "x$usertsig" = "xyes" ; then
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AC_CHECK_FUNCS(sigtimedwait, [havertsig=yes], )
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fi
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fi
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if test "x$havertsig" = "xyes" ; then
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AC_MSG_CHECKING(for F_SETSIG in fcntl.h)
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AC_EGREP_CPP(yes,
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[
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#define _GNU_SOURCE
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#include <fcntl.h>
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#ifdef F_SETSIG
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yes
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#endif
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], [ AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no); havertsig=no])
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fi
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if test "x$havertsig" = "xyes" ; then
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AC_DEFINE(HAVE_RTSIG, 1, [Define if your system supports POSIX realtime signals])
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# OMPI: Don't use AC_LIBOBJ
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sources="rtsig.c $sources"
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AC_MSG_CHECKING(for working rtsig on pipes)
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AC_TRY_RUN(
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[
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#define _GNU_SOURCE
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#include <fcntl.h>
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#include <signal.h>
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#include <unistd.h>
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#include <stdlib.h>
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int sigio()
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{
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exit(0);
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}
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int main()
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{
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int fd[2];
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pipe(fd);
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signal(SIGIO, sigio);
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fcntl(fd[0], F_SETOWN, getpid());
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fcntl(fd[0], F_SETSIG, SIGIO);
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fcntl(fd[0], F_SETFL, fcntl(fd[0], F_GETFL) | O_ASYNC);
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write(fd[1], "", 1);
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return 1;
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}
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], [ AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_WORKING_RTSIG, 1, [Define if realtime signals work on pipes])],
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AC_MSG_RESULT(no))
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fi
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haveepoll=no
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AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], )
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if test "x$haveepoll" = "xyes" -a "$cross_compiling" != "yes" ; then
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# OMPI: Unfortunately, this test is not sufficient on some
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# Linux distros (e.g., RH 9), where the function is defined
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# and you can link against it, but it's hardwired to return
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# ENOSYS -- and /usr/include/gnu/stubs.h fails to define
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# __stub_epoll_ctl (the usual mechanism in glibc to indicate
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# that a function is a stub and isn't really implemented).
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# Hence, the test succeeds because it thinks it can use
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# epoll_ctl (and friends). So we have to do a better test
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# after we determine that epoll_ctl is linkable. Grumble.
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# If we are cross compiling, just trust AC_CHECK_FUNCS
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# OMPI: Unfortunately, this test is not sufficient for another
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# reason. The event_poll struct is defined in the sys/epoll.h
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# file. The structure is the interface between the application
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# and the kernel and is therefore compiled into both. The
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# event_poll struct is defined with a compiler directive
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# __attribute__ ((__packed__). It turns out that there is
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# at least one compiler (Sun Studio) that does not currently
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# recognize this directive. This means that the event_poll
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# struct may be packed in the kernel, but not in the OMPI
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# library. Badness ensues. Therefore, check to see that
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# this struct gets correctly passed between OMPI and the
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# kernel.
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# In this test we use epoll in Level Triggered mode. We create a pipe
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# and the write only file descriptor of the pipe is added to
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# the epoll set. The test is successful if epoll_wait() returns 1
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# indicating that the fd is ready to be written to.
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haveepoll=no
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AC_MSG_CHECKING([for working epoll library interface])
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AC_RUN_IFELSE(AC_LANG_PROGRAM([[
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AC_INCLUDES_DEFAULT
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#include <sys/epoll.h>]],
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[[
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struct epoll_event epevin;
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struct epoll_event epevout;
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int res;
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int epfd;
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int fildes[[2]];
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if ((epfd = epoll_create(1)) == -1)
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exit(1);
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if (pipe(&fildes[[0]]) < 0)
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exit(1);
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memset(&epevin, 0, sizeof(epevin));
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memset(&epevout, 0, sizeof(epevout));
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memset(&epevin.data.ptr, 5, sizeof(epevin.data.ptr));
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epevin.events = EPOLLIN | EPOLLOUT;
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if (epoll_ctl(epfd, EPOLL_CTL_ADD, fildes[[1]], &epevin) == -1)
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exit(1);
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res = epoll_wait(epfd, &epevout, 1, 0);
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if (res != 1) {
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exit(1);
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} else {
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if (epevout.data.ptr != epevin.data.ptr) {
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exit(1);
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}
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}
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/* SUCCESS */
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]]),
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[haveepoll=yes
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AC_DEFINE(HAVE_EPOLL, 1,
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[Define if your system supports the epoll interface])
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# OMPI: Don't use AC_LIBOBJ
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sources="epoll.c $sources"
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needsignal=yes])
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AC_MSG_RESULT([$haveepoll])
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fi
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haveepollsyscall=no
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if test "x$ac_cv_header_sys_epoll_h" = "xyes" -a "x$haveepoll" = "xno" -a "$cross_compiling" != "yes"; then
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# OMPI: See comment above. This test uses the epoll system call
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# interface instead of the library interface.
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AC_MSG_CHECKING(for working epoll system call)
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AC_RUN_IFELSE(AC_LANG_PROGRAM([[
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AC_INCLUDES_DEFAULT
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#include <sys/syscall.h>
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#include <sys/epoll.h>]],
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[[
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struct epoll_event epevin;
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struct epoll_event epevout;
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int res;
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int epfd;
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int fildes[[2]];
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if ((epfd = syscall(__NR_epoll_create, 1)) == -1)
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exit(1);
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if (pipe(&fildes[[0]]) < 0)
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exit(1);
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memset(&epevin, 0, sizeof(epevin));
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memset(&epevout, 0, sizeof(epevout));
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memset(&epevin.data.ptr, 5, sizeof(epevin.data.ptr));
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epevin.events = EPOLLIN | EPOLLOUT;
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if (syscall(__NR_epoll_ctl, epfd,
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EPOLL_CTL_ADD, fildes[[1]], &epevin) == -1)
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exit(1);
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res = syscall(__NR_epoll_wait, epfd, &epevout, 1, 0);
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if (res != 1) {
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exit(1);
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} else {
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if (epevout.data.ptr != epevin.data.ptr) {
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exit(1);
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}
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}
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/* SUCCESS */
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]]),
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[haveepollsyscall=yes
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AC_DEFINE(HAVE_EPOLL, 1,
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[Define if your system supports the epoll interface])
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# OMPI: don't use AC_LIBOBJ
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sources="epoll_sub.c epoll.c $sources"
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needsignal=yes])
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AC_MSG_RESULT([$haveepollsyscall])
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fi
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havedevpoll=no
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if test "x$ac_cv_header_sys_devpoll_h" = "xyes"; then
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AC_DEFINE(HAVE_DEVPOLL, 1,
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[Define if /dev/poll is available])
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# OMPI: Don't use AC_LIBOBJ(devpoll)
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sources="devpoll.c $sources"
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needsignal=yes
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fi
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havekqueue=no
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if test "x$ac_cv_header_sys_event_h" = "xyes"; then
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# All versions of MAC OS X before at least 10.5.2 are
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# completely broken when kqueue is used with pty. So, until
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# they get fixed, completely disable kqueue on MAC OS X.
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case "$host" in
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*apple-darwin*)
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AC_MSG_CHECKING(for working kqueue)
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havekqueue="no"
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AC_MSG_RESULT([no (MAC OS X)])
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;;
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*)
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AC_CHECK_FUNCS(kqueue, [havekqueue=yes], )
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;;
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esac
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if test "x$havekqueue" = "xyes" ; then
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AC_MSG_CHECKING(for working kqueue)
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AC_TRY_RUN(
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/event.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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int
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main()
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{
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int kq;
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int n;
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int fd[[2]];
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struct kevent ev;
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struct timespec ts;
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char buf[[8000]];
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if (pipe(fd) == -1)
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exit(1);
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if (fcntl(fd[[1]], F_SETFL, O_NONBLOCK) == -1)
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exit(1);
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while ((n = write(fd[[1]], buf, sizeof(buf))) == sizeof(buf))
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;
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if ((kq = kqueue()) == -1)
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exit(1);
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ev.ident = fd[[1]];
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ev.filter = EVFILT_WRITE;
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ev.flags = EV_ADD | EV_ENABLE;
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n = kevent(kq, &ev, 1, NULL, 0, NULL);
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if (n == -1)
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exit(1);
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read(fd[[0]], buf, sizeof(buf));
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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n = kevent(kq, NULL, 0, &ev, 1, &ts);
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if (n == -1 || n == 0)
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exit(1);
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exit(0);
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}, [AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_WORKING_KQUEUE, 1,
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[Define if kqueue works correctly with pipes])
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sources="kqueue.c $sources"], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
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# OMPI: don't use AC_LIBOBJ
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fi
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fi
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haveeventports=no
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AC_CHECK_FUNCS(port_create, [haveeventports=yes], )
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# JMS Per #1273, Solaris event ports are temporarily disabled.
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haveeventports=no
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if test "x$haveeventports" = "xyes" ; then
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AC_DEFINE(HAVE_EVENT_PORTS, 1,
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[Define if your system supports event ports])
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sources="evport.c $sources"
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needsignal=yes
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fi
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if test "x$needsignal" = "xyes" ; then
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# OMPI: don't use AC_LIBOBJ
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sources="signal.c $sources"
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fi
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# OMPI: AC_REPLACE_FUNCS doesn't have much meaning here because it
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# uses AC_LIBOBJ; use our own test
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#AC_REPLACE_FUNCS(err)
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AC_TYPE_PID_T
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AC_TYPE_SIZE_T
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AC_CHECK_TYPE(u_int64_t, unsigned long long)
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AC_CHECK_TYPE(u_int32_t, unsigned int)
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AC_CHECK_TYPE(u_int16_t, unsigned short)
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AC_CHECK_TYPE(u_int8_t, unsigned char)
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# OMPI: Save the libobj sources
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OMPI_LIBEVENT_SOURCES="$sources"
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AC_SUBST(OMPI_LIBEVENT_SOURCES)
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# OMPI: All done
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unset sources])dnl
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