procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR go/66574 (Time is provided in millisecond precision instead of nanoseconds as described in go documentation)

Browse source 
PR go/66574
    runtime: Use clock_gettime to get current time.
    
    Fetch the current time in nanoseconds, not microseconds, by using
    clock_gettime rather than gettimeofday.
    
    Update golang/go#11222.
    
    Fixes https://gcc.gnu.org/PR66574.
    
    Reviewed-on: https://go-review.googlesource.com/17156

From-SVN: r230694
This commit is contained in:
Ian Lance Taylor 2015-11-21 01:27:44 +00:00
parent 23df90322f
commit bbbe8b338b
4 changed files with 63 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
gcc/go/gofrontend/MERGE
View file

@ -1,4 +1,4 @@
f79db38cf3484b63f7807abef05eecb23e9d0806
b839c8c35af49bd6d86306ad34449654a4657cb1
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

56
libgo/configure vendored
View file

@ -14477,6 +14477,62 @@ ac_res=$ac_cv_search_nanosleep
if test "$ac_res" != no; then :
test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing clock_gettime" >&5
$as_echo_n "checking for library containing clock_gettime... " >&6; }
if test "${ac_cv_search_clock_gettime+set}" = set; then :
$as_echo_n "(cached) " >&6
else
ac_func_search_save_LIBS=$LIBS
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char clock_gettime ();
int
main ()
{
return clock_gettime ();
;
return 0;
}
_ACEOF
for ac_lib in '' rt; do
if test -z "$ac_lib"; then
ac_res="none required"
else
ac_res=-l$ac_lib
LIBS="-l$ac_lib $ac_func_search_save_LIBS"
fi
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_search_clock_gettime=$ac_res
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext
if test "${ac_cv_search_clock_gettime+set}" = set; then :
break
fi
done
if test "${ac_cv_search_clock_gettime+set}" = set; then :
else
ac_cv_search_clock_gettime=no
fi
rm conftest.$ac_ext
LIBS=$ac_func_search_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_clock_gettime" >&5
$as_echo "$ac_cv_search_clock_gettime" >&6; }
ac_res=$ac_cv_search_clock_gettime
if test "$ac_res" != no; then :
test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
fi

3
libgo/configure.ac
View file

@ -501,9 +501,10 @@ PTHREAD_LIBS=
AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
AC_SUBST(PTHREAD_LIBS)
dnl Test if -lrt is required for sched_yield and/or nanosleep.
dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime.
AC_SEARCH_LIBS([sched_yield], [rt])
AC_SEARCH_LIBS([nanosleep], [rt])
AC_SEARCH_LIBS([clock_gettime], [rt])
AC_C_BIGENDIAN

8
libgo/runtime/go-now.c
View file

@ -13,11 +13,11 @@
struct time_now_ret
now()
{
struct timeval tv;
struct timespec ts;
struct time_now_ret ret;
gettimeofday (&tv, NULL);
ret.sec = tv.tv_sec;
ret.nsec = tv.tv_usec * 1000;
clock_gettime (CLOCK_REALTIME, &ts);
ret.sec = ts.tv_sec;
ret.nsec = ts.tv_nsec;
return ret;
}