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MINOR: lua: core: can yield an execution stack

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This patch provides a yield function. This function permits to
give back the hand at the HAProxy scheduler. It is used when the
lua processing consumes a lot of time.
This commit is contained in:
Thierry FOURNIER 2015-02-17 15:01:59 +01:00 committed by Willy Tarreau
parent 37196f4ecb
commit 13416fe0db
1 changed files with 10 additions and 0 deletions
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10
src/hlua.c
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@ -2491,6 +2491,15 @@ static int hlua_msleep(lua_State *L)
return MAY_LJMP(_hlua_sleep(L, delay)); return MAY_LJMP(_hlua_sleep(L, delay));
} }
/* This functionis an LUA binding. it permits to give back
* the hand at the HAProxy scheduler. It is used when the
* LUA processing consumes a lot of time.
*/
__LJMP static int hlua_yield(lua_State *L)
{
return MAY_LJMP(_hlua_sleep(L, 0));
}
/* This function change the nice of the currently executed /* This function change the nice of the currently executed
* task. It is used set low or high priority at the current * task. It is used set low or high priority at the current
* task. * task.
@ -3325,6 +3334,7 @@ void hlua_init(void)
hlua_class_function(gL.T, "register_task", hlua_register_task); hlua_class_function(gL.T, "register_task", hlua_register_task);
hlua_class_function(gL.T, "register_fetches", hlua_register_fetches); hlua_class_function(gL.T, "register_fetches", hlua_register_fetches);
hlua_class_function(gL.T, "register_converters", hlua_register_converters); hlua_class_function(gL.T, "register_converters", hlua_register_converters);
hlua_class_function(gL.T, "yield", hlua_yield);
hlua_class_function(gL.T, "set_nice", hlua_setnice); hlua_class_function(gL.T, "set_nice", hlua_setnice);
hlua_class_function(gL.T, "sleep", hlua_sleep); hlua_class_function(gL.T, "sleep", hlua_sleep);
hlua_class_function(gL.T, "msleep", hlua_msleep); hlua_class_function(gL.T, "msleep", hlua_msleep);