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authorRickard Green <[email protected]>2014-08-11 10:16:31 +0200
committerRickard Green <[email protected]>2014-08-11 10:16:31 +0200
commit1fed4d803c1eb6363f26585a439cd97390b9af72 (patch)
tree74e0d44940316247df700e2fb5aa2066aaf1289f /erts/emulator/test
parentae4ba88c8b39fc340fff8f3f3fea2628bf8b292e (diff)
parentcde6c2e042834d66649308093d5522c1a2001949 (diff)
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Merge branch 'rickard/nosuspend-bug/OTP-12082' into maint
* rickard/nosuspend-bug/OTP-12082: Fix build of test port program Update Makefile.src Add async_ports test Fix abort of nosuspend-tasks in erts_port_task_schedule()
Diffstat (limited to 'erts/emulator/test')
-rw-r--r--erts/emulator/test/Makefile1
-rw-r--r--erts/emulator/test/async_ports_SUITE.erl118
-rw-r--r--erts/emulator/test/async_ports_SUITE_data/Makefile.src15
-rw-r--r--erts/emulator/test/async_ports_SUITE_data/cport.c81
4 files changed, 215 insertions, 0 deletions
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index 0b0568c31a..dfbe47786a 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -31,6 +31,7 @@ MODULES= \
a_SUITE \
after_SUITE \
alloc_SUITE \
+ async_ports_SUITE \
beam_SUITE \
beam_literals_SUITE \
bif_SUITE \
diff --git a/erts/emulator/test/async_ports_SUITE.erl b/erts/emulator/test/async_ports_SUITE.erl
new file mode 100644
index 0000000000..c89b3655ff
--- /dev/null
+++ b/erts/emulator/test/async_ports_SUITE.erl
@@ -0,0 +1,118 @@
+-module(async_ports_SUITE).
+
+-include_lib("common_test/include/ct.hrl").
+
+-compile(export_all).
+
+-define(PACKET_SIZE, (10 * 1024 * 8)).
+-define(CPORT_DELAY, 100).
+-define(TEST_LOOPS_COUNT, 100000).
+-define(SLEEP_BEFORE_CHECK, 1000).
+-define(TEST_PROCS_COUNT, 2).
+-define(TC_TIMETRAP_SECONDS, 10).
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ [
+ permanent_busy_test
+ ].
+
+permanent_busy_test(Config) ->
+ ct:timetrap({seconds, ?TC_TIMETRAP_SECONDS}),
+ ExePath = filename:join(?config(data_dir, Config), "cport"),
+
+ Self = self(),
+ spawn_link(
+ fun() ->
+ Block = <<0:?PACKET_SIZE>>,
+
+ Port = open_port(ExePath),
+
+ Testers =
+ lists:map(
+ fun(_) ->
+ erlang:spawn_link(?MODULE, run_loop,
+ [Self,
+ Port,
+ Block,
+ ?TEST_LOOPS_COUNT,
+ 0])
+ end,
+ lists:seq(1, ?TEST_PROCS_COUNT)),
+ Self ! {test_info, Port, Testers},
+ endless_flush(Port)
+ end),
+
+ receive
+ {test_info, Port, Testers} ->
+ MaxWaitTime = round(0.7 * ?TC_TIMETRAP_SECONDS * 1000),
+ ct:log("wait testers, maximum ~w mcsec~n", [MaxWaitTime]),
+ ok = wait_testers(MaxWaitTime, Testers),
+ timer:sleep(?SLEEP_BEFORE_CHECK),
+ case erlang:port_command(Port, <<"test">>, [nosuspend]) of
+ false ->
+ exit(port_dead);
+ true ->
+ ok
+ end
+ end.
+
+wait_testers(Timeout, Testers) ->
+ lists:foldl(
+ fun(Pid, AccIn) ->
+ StartWait = os:timestamp(),
+ receive
+ {Pid, port_dead} ->
+ recalc_timeout(AccIn, StartWait)
+ after AccIn ->
+ Pid ! stop,
+ recalc_timeout(AccIn, StartWait)
+ end
+ end, Timeout, Testers),
+ ok.
+
+recalc_timeout(TimeoutIn, WaitStart) ->
+ erlang:max(0, TimeoutIn - round(timer:now_diff(os:timestamp(), WaitStart)) div 1000).
+
+open_port(ExePath) ->
+ erlang:open_port({spawn, ExePath ++ " 100"}, [{packet, 4}, eof, exit_status, use_stdio, binary]).
+
+run_loop(RootProc, Port, Block, CheckLimit, BusyCnt) ->
+ receive
+ stop ->
+ ok
+ after 0 ->
+ case erlang:port_command(Port, Block, [nosuspend]) of
+ true ->
+ run_loop(RootProc, Port, Block, CheckLimit, 0);
+ false ->
+ if
+ BusyCnt + 1 > CheckLimit ->
+ check_dead(RootProc, Port, Block, CheckLimit);
+ true ->
+ run_loop(RootProc, Port, Block, CheckLimit, BusyCnt + 1)
+ end
+ end
+ end.
+
+check_dead(RootProc, Port, Block, CheckLimit) ->
+ ct:log("~p: check port dead~n", [self()]),
+ timer:sleep(?SLEEP_BEFORE_CHECK),
+ case erlang:port_command(Port, Block, [nosuspend]) of
+ true ->
+ ct:log("not dead~n"),
+ run_loop(RootProc, Port, Block, CheckLimit, 0);
+ false ->
+ ct:log("port dead: ~p~n", [Port]),
+ RootProc ! {self(), port_dead},
+ ok
+ end.
+
+endless_flush(Port) ->
+ receive
+ {Port, {data, _}} ->
+ endless_flush(Port);
+ {Port, SomethingWrong} ->
+ erlang:error({someting_wrong, SomethingWrong})
+ end.
diff --git a/erts/emulator/test/async_ports_SUITE_data/Makefile.src b/erts/emulator/test/async_ports_SUITE_data/Makefile.src
new file mode 100644
index 0000000000..56da3fbe12
--- /dev/null
+++ b/erts/emulator/test/async_ports_SUITE_data/Makefile.src
@@ -0,0 +1,15 @@
+CC = @CC@
+LD = @LD@
+CFLAGS = @CFLAGS@ @DEFS@
+CROSSLDFLAGS = @CROSSLDFLAGS@
+
+PROGS = cport@exe@
+
+
+all: $(PROGS)
+
+cport@exe@: cport@obj@
+ $(LD) $(CROSSLDFLAGS) -o cport cport@obj@ @LIBS@
+
+cport@obj@: cport.c
+ $(CC) -c -o cport@obj@ $(CFLAGS) cport.c
diff --git a/erts/emulator/test/async_ports_SUITE_data/cport.c b/erts/emulator/test/async_ports_SUITE_data/cport.c
new file mode 100644
index 0000000000..033aff382a
--- /dev/null
+++ b/erts/emulator/test/async_ports_SUITE_data/cport.c
@@ -0,0 +1,81 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#ifdef __WIN32__
+# include "windows.h"
+# include "winbase.h"
+#else
+# include <unistd.h>
+#endif
+
+typedef unsigned char byte;
+
+int read_cmd(byte *buf)
+{
+ int len;
+ if (read_exact(buf, 4) != 4)
+ return(-1);
+
+ len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+ return read_exact(buf, len);
+}
+
+int write_cmd(byte *buf, int len)
+{
+ byte li[4];
+ li[0] = (len >> 24) & 0xff;
+ li[1] = (len >> 16) & 0xff;
+ li[2] = (len >> 8) & 0xff;
+ li[3] = len & 0xff;
+ write_exact(&li, 4);
+
+ return write_exact(buf, len);
+}
+
+int read_exact(byte *buf, int len)
+{
+ int i, got=0;
+ do {
+ if ((i = read(0, buf+got, len-got)) <= 0)
+ {
+ return(i);
+ }
+ got += i;
+ } while (got<len);
+ return len;
+}
+
+int write_exact(byte *buf, int len)
+{
+ int i, wrote = 0;
+ do {
+ if ((i = write(1, buf+wrote, len-wrote)) < 0)
+ return (i);
+ wrote += i;
+ } while (wrote<len);
+ return len;
+}
+
+byte static_buf[31457280]; // 30 mb
+
+int main(int argc, char **argv) {
+ int sleep_time = atoi(argv[1]);
+ int fn, arg, res;
+ byte *buf = &static_buf[0];
+ int len = 0;
+ if (sleep_time <= 0)
+ sleep_time = 0;
+#ifdef __WIN32__
+ else
+ sleep_time = ((sleep_time - 1) / 1000) + 1; /* Milli seconds */
+#endif
+ while ((len = read_cmd(buf)) > 0) {
+#ifdef __WIN32__
+ Sleep((DWORD) sleep_time);
+#else
+ usleep(sleep_time);
+#endif
+ write_cmd(buf, len);
+ }
+}