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-rw-r--r--HOWTO/INSTALL.md4
-rw-r--r--erts/aclocal.m434
2 files changed, 29 insertions, 9 deletions
diff --git a/HOWTO/INSTALL.md b/HOWTO/INSTALL.md
index 4c89370691..837e6cbd76 100644
--- a/HOWTO/INSTALL.md
+++ b/HOWTO/INSTALL.md
@@ -402,6 +402,10 @@ Some of the available `configure` options are:
dependant application.
* `--enable-gettimeofday-as-os-system-time` - Force usage of `gettimeofday()` for
OS system time.
+* `--enable-prefer-elapsed-monotonic-time-during-suspend` - Prefer an OS monotonic
+ time source with elapsed time during suspend.
+* `--disable-prefer-elapsed-monotonic-time-during-suspend` - Do not prefer an OS
+ monotonic time source with elapsed time during suspend.
* `--enable-dirty-schedulers` - Enable the **experimental** dirty schedulers
functionality. Note that the dirty schedulers functionality is experimental,
and **not supported**. This functionality **will** be subject to backward
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4
index dd5d3979a7..0714ce6030 100644
--- a/erts/aclocal.m4
+++ b/erts/aclocal.m4
@@ -726,9 +726,15 @@ esac
AC_DEFUN(ERL_MONOTONIC_CLOCK,
[
- default_resolution_clock_gettime_monotonic="CLOCK_HIGHRES CLOCK_BOOTTIME CLOCK_MONOTONIC"
- low_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC_FAST"
- high_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_PRECISE"
+ if test "$3" = "yes"; then
+ default_resolution_clock_gettime_monotonic="CLOCK_HIGHRES CLOCK_BOOTTIME CLOCK_MONOTONIC"
+ low_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC_FAST"
+ high_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_PRECISE"
+ else
+ default_resolution_clock_gettime_monotonic="CLOCK_HIGHRES CLOCK_UPTIME CLOCK_MONOTONIC"
+ low_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_COARSE CLOCK_UPTIME_FAST"
+ high_resolution_clock_gettime_monotonic="CLOCK_UPTIME_PRECISE"
+ fi
case "$1" in
high_resolution)
@@ -1466,7 +1472,7 @@ AC_ARG_WITH(with_sparc_memory_order,
LM_CHECK_THR_LIB
ERL_INTERNAL_LIBS
-ERL_MONOTONIC_CLOCK(high_resolution)
+ERL_MONOTONIC_CLOCK(high_resolution, undefined, no)
case $erl_monotonic_clock_func in
clock_gettime)
@@ -2212,6 +2218,16 @@ AC_ARG_WITH(clock-gettime-monotonic-id,
AS_HELP_STRING([--with-clock-gettime-monotonic-id=CLOCKID],
[specify clock id to use with clock_gettime() for monotonic time)]))
+AC_ARG_ENABLE(prefer-elapsed-monotonic-time-during-suspend,
+ AS_HELP_STRING([--enable-prefer-elapsed-monotonic-time-during-suspend],
+ [Prefer an OS monotonic time source with elapsed time during suspend])
+ AS_HELP_STRING([--disable-prefer-elapsed-monotonic-time-during-suspend],
+ [Do not prefer an OS monotonic time source with elapsed time during suspend]),
+[ case "$enableval" in
+ yes) prefer_elapsed_monotonic_time_during_suspend=yes ;;
+ *) prefer_elapsed_monotonic_time_during_suspend=no ;;
+ esac ], prefer_elapsed_monotonic_time_during_suspend=no)
+
AC_ARG_ENABLE(gettimeofday-as-os-system-time,
AS_HELP_STRING([--enable-gettimeofday-as-os-system-time],
[Force usage of gettimeofday() for OS system time]),
@@ -2319,13 +2335,13 @@ esac
case "$with_clock_resolution-$with_clock_gettime_monotonic_id" in
high-no)
- ERL_MONOTONIC_CLOCK(high_resolution);;
+ ERL_MONOTONIC_CLOCK(high_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
low-no)
- ERL_MONOTONIC_CLOCK(low_resolution);;
+ ERL_MONOTONIC_CLOCK(low_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
default-no)
- ERL_MONOTONIC_CLOCK(default_resolution);;
+ ERL_MONOTONIC_CLOCK(default_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
*)
- ERL_MONOTONIC_CLOCK(custom_resolution, $with_clock_gettime_monotonic_id);;
+ ERL_MONOTONIC_CLOCK(custom_resolution, $with_clock_gettime_monotonic_id, $prefer_elapsed_monotonic_time_during_suspend);;
esac
case "$erl_monotonic_clock_func-$erl_monotonic_clock_id-$with_clock_gettime_monotonic_id" in
@@ -2373,7 +2389,7 @@ if test $erl_cv_clock_gettime_monotonic_raw = yes; then
AC_DEFINE(HAVE_CLOCK_GETTIME_MONOTONIC_RAW, [1], [Define if you have clock_gettime(CLOCK_MONOTONIC_RAW, _)])
fi
-ERL_MONOTONIC_CLOCK(high_resolution)
+ERL_MONOTONIC_CLOCK(high_resolution, undefined, no)
case $$erl_monotonic_clock_low_resolution-$erl_monotonic_clock_func in
no-mach_clock_get_time)