diff options
Diffstat (limited to 'lib/kernel')
| -rw-r--r-- | lib/kernel/doc/src/heart.xml | 10 | ||||
| -rw-r--r-- | lib/kernel/test/heart_SUITE.erl | 40 |
2 files changed, 48 insertions, 2 deletions
diff --git a/lib/kernel/doc/src/heart.xml b/lib/kernel/doc/src/heart.xml index 9da4773f2d..bfb4ce45e6 100644 --- a/lib/kernel/doc/src/heart.xml +++ b/lib/kernel/doc/src/heart.xml @@ -89,6 +89,16 @@ <pre> % <input>erl -heart -env HEART_KILL_SIGNAL SIGABRT ...</input></pre> + <p> If heart should <b>not</b> kill the Erlang runtime system, this can be indicated + using the environment variable <c><![CDATA[HEART_NO_KILL]]></c>. + This can be useful if the command executed by heart takes care of this, + for example as part of a specific cleanup sequence. + If unset, the default behaviour will be to kill as described above. + </p> + + <pre> +% <input>erl -heart -env HEART_NO_KILL 1 ...</input></pre> + <p> Furthermore, <c><![CDATA[ERL_CRASH_DUMP_SECONDS]]></c> has the following behaviour on <c>heart</c>: diff --git a/lib/kernel/test/heart_SUITE.erl b/lib/kernel/test/heart_SUITE.erl index 39cd29cea0..a848bc78f7 100644 --- a/lib/kernel/test/heart_SUITE.erl +++ b/lib/kernel/test/heart_SUITE.erl @@ -29,11 +29,11 @@ set_cmd/1, clear_cmd/1, get_cmd/1, callback_api/1, options_api/1, - dont_drop/1, kill_pid/1]). + dont_drop/1, kill_pid/1, heart_no_kill/1]). -export([init_per_testcase/2, end_per_testcase/2]). --export([start_heart_stress/1, mangle/1, suicide_by_heart/0]). +-export([start_heart_stress/1, mangle/1, suicide_by_heart/0, non_suicide_by_heart/0]). -define(DEFAULT_TIMEOUT_SECS, 120). @@ -507,6 +507,30 @@ do_kill_pid(_Config) -> false end. + +heart_no_kill(suite) -> + []; +heart_no_kill(doc) -> + ["Tests that heart doesn't kill the old erlang node when ", + "HEART_NO_KILL is set."]; +heart_no_kill(Config) when is_list(Config) -> + ok = do_no_kill(Config). + +do_no_kill(_Config) -> + Name = heart_test, + {ok,Node} = start_node_run(Name,[],non_suicide_by_heart,[]), + io:format("Node is ~p~n", [Node]), + ok = wait_for_node(Node,15), + io:format("wait_for_node is ~p~n", [ok]), + erlang:monitor_node(Node, true), + receive {nodedown,Node} -> false + after 30000 -> + io:format("Node didn't die..\n"), + rpc:call(Node,init,stop,[]), + io:format("done init:stop..\n"), + ok + end. + wait_for_node(_,0) -> false; wait_for_node(Node,N) -> @@ -625,6 +649,18 @@ suicide_by_heart() -> sallad end. +non_suicide_by_heart() -> + P = open_port({spawn,"heart -ht 11 -pid "++os:getpid()},[exit_status, {env, {"HEART_NO_KILL", "1"}}, {packet,2}]), + receive X -> X end, + %% Just hang and wait for heart to timeout + receive + {P,{exit_status,_}} -> + ok + after + 20000 -> + exit(timeout) + end. + %% generate a module from binary generate(Module, Attributes, FunStrings) -> |