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for performance reasons only set the debug hook if the time limit is enabled.

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This commit is contained in:
antirez 2011-05-06 17:37:03 +02:00
parent 87c219243c
commit da386cdf33
1 changed files with 11 additions and 6 deletions
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17
src/scripting.c
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@ -203,7 +203,6 @@ void luaMaskCountHook(lua_State *lua, lua_Debug *ar) {
long long elapsed;
REDIS_NOTUSED(ar);
if (server.lua_time_limit <= 0) return;
elapsed = (ustime()/1000) - server.lua_time_start;
if (elapsed >= server.lua_time_limit) {
redisLog(REDIS_NOTICE,"Lua script aborted for max execution time after %lld milliseconds of running time.",elapsed);
@ -225,10 +224,6 @@ void scriptingInit(void) {
server.lua_client = createClient(-1);
server.lua_client->flags |= REDIS_LUA_CLIENT;
/* Set an hook in order to be able to stop the script execution if it
* is running for too much time. */
lua_sethook(lua,luaMaskCountHook,LUA_MASKCOUNT,100000);
server.lua = lua;
}
@ -389,10 +384,20 @@ void evalCommand(redisClient *c) {
/* Select the right DB in the context of the Lua client */
selectDb(server.lua_client,c->db->id);
/* Set an hook in order to be able to stop the script execution if it
* is running for too much time.
* We set the hook only if the time limit is enabled as the hook will
* make the Lua script execution slower. */
if (server.lua_time_limit > 0) {
lua_sethook(lua,luaMaskCountHook,LUA_MASKCOUNT,100000);
server.lua_time_start = ustime()/1000;
} else {
lua_sethook(lua,luaMaskCountHook,0,0);
}
/* At this point whatever this script was never seen before or if it was
* already defined, we can call it. We have zero arguments and expect
* a single return value. */
server.lua_time_start = ustime()/1000;
if (lua_pcall(lua,0,1,0)) {
selectDb(c,server.lua_client->db->id); /* set DB ID from Lua client */
addReplyErrorFormat(c,"Error running script (call to %s): %s\n",