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-rw-r--r--erts/doc/src/erlang.xml5
-rw-r--r--erts/emulator/beam/erl_bif_info.c8
-rw-r--r--erts/emulator/test/driver_SUITE.erl4
-rw-r--r--erts/preloaded/src/erlang.erl1
4 files changed, 16 insertions, 2 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 111756407f..483d81cfb6 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -6144,6 +6144,11 @@ ok
<seealso marker="#system_info_multi_scheduling">erlang:system_info(multi_scheduling)</seealso>, and
<seealso marker="#system_info_schedulers">erlang:system_info(schedulers)</seealso>.</p>
</item>
+ <tag><c>nif_version</c></tag>
+ <item>
+ <p>Returns a string containing the erlang NIF version
+ used by the runtime system. It will be on the form "&lt;major ver&gt;.&lt;minor ver&gt;".</p>
+ </item>
<tag><marker id="system_info_otp_release"><c>otp_release</c></marker></tag>
<item>
<p>Returns a string containing the OTP release number of the
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 0a8f0b5758..b90362d82c 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -27,6 +27,7 @@
#include "erl_process.h"
#include "error.h"
#include "erl_driver.h"
+#include "erl_nif.h"
#include "bif.h"
#include "big.h"
#include "erl_version.h"
@@ -2459,6 +2460,13 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
ERL_DRV_EXTENDED_MINOR_VERSION);
hp = HAlloc(BIF_P, 2*n);
BIF_RET(buf_to_intlist(&hp, buf, n, NIL));
+ } else if (ERTS_IS_ATOM_STR("nif_version", BIF_ARG_1)) {
+ char buf[42];
+ int n = erts_snprintf(buf, 42, "%d.%d",
+ ERL_NIF_MAJOR_VERSION,
+ ERL_NIF_MINOR_VERSION);
+ hp = HAlloc(BIF_P, 2*n);
+ BIF_RET(buf_to_intlist(&hp, buf, n, NIL));
} else if (ERTS_IS_ATOM_STR("smp_support", BIF_ARG_1)) {
#ifdef ERTS_SMP
BIF_RET(am_true);
diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl
index 8d2c620be0..623d62f876 100644
--- a/erts/emulator/test/driver_SUITE.erl
+++ b/erts/emulator/test/driver_SUITE.erl
@@ -1204,8 +1204,8 @@ check_si_res(["sched_thrs", Value]) ->
?line Value = integer_to_list(erlang:system_info(schedulers));
%% Data added in 3rd version of driver_system_info() (driver version 1.5)
-check_si_res(["emu_nif_vsn", _Value]) ->
- true;
+check_si_res(["emu_nif_vsn", Value]) ->
+ ?line Value = erlang:system_info(nif_version);
%% Data added in 4th version of driver_system_info() (driver version 3.1)
check_si_res(["dirty_sched", _Value]) ->
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index 4ba623d921..611a568014 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2252,6 +2252,7 @@ tuple_to_list(_Tuple) ->
(modified_timing_level) -> integer() | undefined;
(multi_scheduling) -> disabled | blocked | enabled;
(multi_scheduling_blockers) -> [PID :: pid()];
+ (nif_version) -> string();
(otp_release) -> string();
(port_count) -> non_neg_integer();
(port_limit) -> pos_integer();