syscall: Portability code for epoll_event on GNU/Linux.
From-SVN: r180729
This commit is contained in:
Ian Lance Taylor
parent
15694fdd6d
commit
207c35fa9e
@ -1498,7 +1498,7 @@ endif # !LIBGO_IS_LINUX
|
||||
|
||||
# Define socket sizes and types.
|
||||
if LIBGO_IS_LINUX
|
||||
syscall_socket_file = go/syscall/socket_linux.go
|
||||
syscall_socket_file = go/syscall/socket_linux.go epoll.go
|
||||
else
|
||||
if LIBGO_IS_SOLARIS
|
||||
syscall_socket_file = go/syscall/socket_solaris.go
|
||||
@ -1582,6 +1582,34 @@ s-sysinfo: $(srcdir)/mksysinfo.sh config.h
|
||||
$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
|
||||
$(STAMP) $@
|
||||
|
||||
# The epoll struct has an embedded union and is packed on x86_64,
|
||||
# which is too complicated for mksysinfo.sh. We find the offset of
|
||||
# the only field we care about in configure.ac, and generate the
|
||||
# struct here.
|
||||
epoll.go: s-epoll; @true
|
||||
s-epoll: Makefile
|
||||
rm -f epoll.go.tmp
|
||||
echo 'package syscall' > epoll.go.tmp
|
||||
echo 'type EpollEvent struct {' >> epoll.go.tmp
|
||||
echo ' Events uint32' >> epoll.go.tmp
|
||||
case "$(SIZEOF_STRUCT_EPOLL_EVENT),$(STRUCT_EPOLL_EVENT_FD_OFFSET)" in \
|
||||
0,0) echo 1>&2 "*** struct epoll_event data.fd offset unknown"; \
|
||||
exit 1; ;; \
|
||||
8,4) echo ' Fd int32' >> epoll.go.tmp; ;; \
|
||||
12,4) echo ' Fd int32' >> epoll.go.tmp; \
|
||||
echo ' Pad [4]byte' >> epoll.go.tmp; ;; \
|
||||
12,8) echo ' Pad [4]byte' >> epoll.go.tmp; \
|
||||
echo ' Fd int32' >> epoll.go.tmp; ;; \
|
||||
16,8) echo ' Pad [4]byte' >> epoll.go.tmp; \
|
||||
echo ' Fd int32' >> epoll.go.tmp; \
|
||||
echo ' Pad2 [4]byte' >> epoll.go.tmp; ;; \
|
||||
*) echo 1>&2 "*** struct epoll_event unsupported"; \
|
||||
exit 1; ;; \
|
||||
esac
|
||||
echo '}' >> epoll.go.tmp
|
||||
$(SHELL) $(srcdir)/../move-if-change epoll.go.tmp epoll.go
|
||||
$(STAMP) $@
|
||||
|
||||
if LIBGO_IS_LINUX
|
||||
# os_lib_inotify_lo = os/inotify.lo
|
||||
os_lib_inotify_lo =
|
||||
|
||||
@ -424,9 +424,11 @@ RANLIB = @RANLIB@
|
||||
SED = @SED@
|
||||
SET_MAKE = @SET_MAKE@
|
||||
SHELL = @SHELL@
|
||||
SIZEOF_STRUCT_EPOLL_EVENT = @SIZEOF_STRUCT_EPOLL_EVENT@
|
||||
SPLIT_STACK = @SPLIT_STACK@
|
||||
STRINGOPS_FLAG = @STRINGOPS_FLAG@
|
||||
STRIP = @STRIP@
|
||||
STRUCT_EPOLL_EVENT_FD_OFFSET = @STRUCT_EPOLL_EVENT_FD_OFFSET@
|
||||
VERSION = @VERSION@
|
||||
WARN_FLAGS = @WARN_FLAGS@
|
||||
WERROR = @WERROR@
|
||||
@ -1868,7 +1870,7 @@ go_testing_script_files = \
|
||||
@LIBGO_IS_LINUX_FALSE@@LIBGO_IS_SOLARIS_TRUE@syscall_socket_file = go/syscall/socket_solaris.go
|
||||
|
||||
# Define socket sizes and types.
|
||||
@LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go
|
||||
@LIBGO_IS_LINUX_TRUE@syscall_socket_file = go/syscall/socket_linux.go epoll.go
|
||||
@LIBGO_IS_386_FALSE@@LIBGO_IS_SOLARIS_TRUE@syscall_uname_file = go/syscall/libcall_uname.go
|
||||
|
||||
# Support for uname.
|
||||
@ -4475,6 +4477,34 @@ s-sysinfo: $(srcdir)/mksysinfo.sh config.h
|
||||
$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
|
||||
$(STAMP) $@
|
||||
|
||||
# The epoll struct has an embedded union and is packed on x86_64,
|
||||
# which is too complicated for mksysinfo.sh. We find the offset of
|
||||
# the only field we care about in configure.ac, and generate the
|
||||
# struct here.
|
||||
epoll.go: s-epoll; @true
|
||||
s-epoll: Makefile
|
||||
rm -f epoll.go.tmp
|
||||
echo 'package syscall' > epoll.go.tmp
|
||||
echo 'type EpollEvent struct {' >> epoll.go.tmp
|
||||
echo ' Events uint32' >> epoll.go.tmp
|
||||
case "$(SIZEOF_STRUCT_EPOLL_EVENT),$(STRUCT_EPOLL_EVENT_FD_OFFSET)" in \
|
||||
0,0) echo 1>&2 "*** struct epoll_event data.fd offset unknown"; \
|
||||
exit 1; ;; \
|
||||
8,4) echo ' Fd int32' >> epoll.go.tmp; ;; \
|
||||
12,4) echo ' Fd int32' >> epoll.go.tmp; \
|
||||
echo ' Pad [4]byte' >> epoll.go.tmp; ;; \
|
||||
12,8) echo ' Pad [4]byte' >> epoll.go.tmp; \
|
||||
echo ' Fd int32' >> epoll.go.tmp; ;; \
|
||||
16,8) echo ' Pad [4]byte' >> epoll.go.tmp; \
|
||||
echo ' Fd int32' >> epoll.go.tmp; \
|
||||
echo ' Pad2 [4]byte' >> epoll.go.tmp; ;; \
|
||||
*) echo 1>&2 "*** struct epoll_event unsupported"; \
|
||||
exit 1; ;; \
|
||||
esac
|
||||
echo '}' >> epoll.go.tmp
|
||||
$(SHELL) $(srcdir)/../move-if-change epoll.go.tmp epoll.go
|
||||
$(STAMP) $@
|
||||
|
||||
asn1/asn1.lo: $(go_asn1_files) big.gox bytes.gox fmt.gox io.gox os.gox \
|
||||
reflect.gox strconv.gox strings.gox time.gox
|
||||
$(BUILDPACKAGE)
|
||||
|
||||
219
libgo/configure
vendored
219
libgo/configure
vendored
@ -602,6 +602,8 @@ ac_subst_vars='am__EXEEXT_FALSE
|
||||
am__EXEEXT_TRUE
|
||||
LTLIBOBJS
|
||||
LIBOBJS
|
||||
STRUCT_EPOLL_EVENT_FD_OFFSET
|
||||
SIZEOF_STRUCT_EPOLL_EVENT
|
||||
STRINGOPS_FLAG
|
||||
HAVE_WAIT4_FALSE
|
||||
HAVE_WAIT4_TRUE
|
||||
@ -1949,6 +1951,184 @@ $as_echo "$ac_res" >&6; }
|
||||
eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
|
||||
|
||||
} # ac_fn_c_check_type
|
||||
|
||||
# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
|
||||
# --------------------------------------------
|
||||
# Tries to find the compile-time value of EXPR in a program that includes
|
||||
# INCLUDES, setting VAR accordingly. Returns whether the value could be
|
||||
# computed
|
||||
ac_fn_c_compute_int ()
|
||||
{
|
||||
as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
|
||||
if test "$cross_compiling" = yes; then
|
||||
# Depending upon the size, compute the lo and hi bounds.
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(($2) >= 0)];
|
||||
test_array [0] = 0
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_lo=0 ac_mid=0
|
||||
while :; do
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
|
||||
test_array [0] = 0
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_hi=$ac_mid; break
|
||||
else
|
||||
as_fn_arith $ac_mid + 1 && ac_lo=$as_val
|
||||
if test $ac_lo -le $ac_mid; then
|
||||
ac_lo= ac_hi=
|
||||
break
|
||||
fi
|
||||
as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
done
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(($2) < 0)];
|
||||
test_array [0] = 0
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_hi=-1 ac_mid=-1
|
||||
while :; do
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(($2) >= $ac_mid)];
|
||||
test_array [0] = 0
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_lo=$ac_mid; break
|
||||
else
|
||||
as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
|
||||
if test $ac_mid -le $ac_hi; then
|
||||
ac_lo= ac_hi=
|
||||
break
|
||||
fi
|
||||
as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
done
|
||||
else
|
||||
ac_lo= ac_hi=
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
# Binary search between lo and hi bounds.
|
||||
while test "x$ac_lo" != "x$ac_hi"; do
|
||||
as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
|
||||
test_array [0] = 0
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
ac_hi=$ac_mid
|
||||
else
|
||||
as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
done
|
||||
case $ac_lo in #((
|
||||
?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
|
||||
'') ac_retval=1 ;;
|
||||
esac
|
||||
else
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
||||
/* end confdefs.h. */
|
||||
$4
|
||||
static long int longval () { return $2; }
|
||||
static unsigned long int ulongval () { return $2; }
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
int
|
||||
main ()
|
||||
{
|
||||
|
||||
FILE *f = fopen ("conftest.val", "w");
|
||||
if (! f)
|
||||
return 1;
|
||||
if (($2) < 0)
|
||||
{
|
||||
long int i = longval ();
|
||||
if (i != ($2))
|
||||
return 1;
|
||||
fprintf (f, "%ld", i);
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned long int i = ulongval ();
|
||||
if (i != ($2))
|
||||
return 1;
|
||||
fprintf (f, "%lu", i);
|
||||
}
|
||||
/* Do not output a trailing newline, as this causes \r\n confusion
|
||||
on some platforms. */
|
||||
return ferror (f) || fclose (f) != 0;
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_run "$LINENO"; then :
|
||||
echo >>conftest.val; read $3 <conftest.val; ac_retval=0
|
||||
else
|
||||
ac_retval=1
|
||||
fi
|
||||
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
|
||||
conftest.$ac_objext conftest.beam conftest.$ac_ext
|
||||
rm -f conftest.val
|
||||
|
||||
fi
|
||||
eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
|
||||
return $ac_retval
|
||||
|
||||
} # ac_fn_c_compute_int
|
||||
cat >config.log <<_ACEOF
|
||||
This file contains any messages produced by compilers while
|
||||
running configure, to aid debugging if configure makes a mistake.
|
||||
@ -10916,7 +11096,7 @@ else
|
||||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 10919 "configure"
|
||||
#line 11099 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
@ -11022,7 +11202,7 @@ else
|
||||
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
|
||||
lt_status=$lt_dlunknown
|
||||
cat > conftest.$ac_ext <<_LT_EOF
|
||||
#line 11025 "configure"
|
||||
#line 11205 "configure"
|
||||
#include "confdefs.h"
|
||||
|
||||
#if HAVE_DLFCN_H
|
||||
@ -14478,6 +14658,41 @@ fi
|
||||
|
||||
CFLAGS=$CFLAGS_hold
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking epoll_event size" >&5
|
||||
$as_echo_n "checking epoll_event size... " >&6; }
|
||||
if test "${libgo_cv_c_epoll_event_size+set}" = set; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
if ac_fn_c_compute_int "$LINENO" "sizeof (struct epoll_event)" "libgo_cv_c_epoll_event_size" "#include <sys/epoll.h>"; then :
|
||||
|
||||
else
|
||||
libgo_cv_c_epoll_event_size=0
|
||||
fi
|
||||
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_c_epoll_event_size" >&5
|
||||
$as_echo "$libgo_cv_c_epoll_event_size" >&6; }
|
||||
SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size}
|
||||
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking epoll_event data.fd offset" >&5
|
||||
$as_echo_n "checking epoll_event data.fd offset... " >&6; }
|
||||
if test "${libgo_cv_c_epoll_event_fd_offset+set}" = set; then :
|
||||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
if ac_fn_c_compute_int "$LINENO" "offsetof (struct epoll_event, data.fd)" "libgo_cv_c_epoll_event_fd_offset" "#include <stddef.h>
|
||||
#include <sys/epoll.h>"; then :
|
||||
|
||||
else
|
||||
libgo_cv_c_epoll_event_fd_offset=0
|
||||
fi
|
||||
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_c_epoll_event_fd_offset" >&5
|
||||
$as_echo "$libgo_cv_c_epoll_event_fd_offset" >&6; }
|
||||
STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset}
|
||||
|
||||
|
||||
cat >confcache <<\_ACEOF
|
||||
# This file is a shell script that caches the results of configure
|
||||
# tests run on this system so they can be shared between configure
|
||||
|
||||
@ -505,6 +505,28 @@ CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
|
||||
AC_CHECK_TYPES(off64_t)
|
||||
CFLAGS=$CFLAGS_hold
|
||||
|
||||
dnl Work out the size of the epoll_events struct on GNU/Linux.
|
||||
AC_CACHE_CHECK([epoll_event size],
|
||||
[libgo_cv_c_epoll_event_size],
|
||||
[AC_COMPUTE_INT(libgo_cv_c_epoll_event_size,
|
||||
[sizeof (struct epoll_event)],
|
||||
[#include <sys/epoll.h>],
|
||||
[libgo_cv_c_epoll_event_size=0])])
|
||||
SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size}
|
||||
AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT)
|
||||
|
||||
dnl Work out the offset of the fd field in the epoll_events struct on
|
||||
dnl GNU/Linux.
|
||||
AC_CACHE_CHECK([epoll_event data.fd offset],
|
||||
[libgo_cv_c_epoll_event_fd_offset],
|
||||
[AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset,
|
||||
[offsetof (struct epoll_event, data.fd)],
|
||||
[#include <stddef.h>
|
||||
#include <sys/epoll.h>],
|
||||
[libgo_cv_c_epoll_event_fd_offset=0])])
|
||||
STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset}
|
||||
AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET)
|
||||
|
||||
AC_CACHE_SAVE
|
||||
|
||||
if test ${multilib} = yes; then
|
||||
|
||||
@ -164,15 +164,6 @@ func anyToSockaddrOS(rsa *RawSockaddrAny) (Sockaddr, int) {
|
||||
return nil, EAFNOSUPPORT
|
||||
}
|
||||
|
||||
// We don't take this type directly from the header file because it
|
||||
// uses a union. FIXME.
|
||||
|
||||
type EpollEvent struct {
|
||||
Events uint32
|
||||
Fd int32
|
||||
Pad int32
|
||||
}
|
||||
|
||||
//sysnb EpollCreate(size int) (fd int, errno int)
|
||||
//epoll_create(size int) int
|
||||
|
||||
|
||||
@ -133,9 +133,11 @@ RANLIB = @RANLIB@
|
||||
SED = @SED@
|
||||
SET_MAKE = @SET_MAKE@
|
||||
SHELL = @SHELL@
|
||||
SIZEOF_STRUCT_EPOLL_EVENT = @SIZEOF_STRUCT_EPOLL_EVENT@
|
||||
SPLIT_STACK = @SPLIT_STACK@
|
||||
STRINGOPS_FLAG = @STRINGOPS_FLAG@
|
||||
STRIP = @STRIP@
|
||||
STRUCT_EPOLL_EVENT_FD_OFFSET = @STRUCT_EPOLL_EVENT_FD_OFFSET@
|
||||
VERSION = @VERSION@
|
||||
WARN_FLAGS = @WARN_FLAGS@
|
||||
WERROR = @WERROR@
|
||||
|
||||
Loading…
Reference in New Issue
Block a user