luanti-org/luanti
1
0
Fork 0
mirror of https://github.com/luanti-org/luanti.git synced 2025-10-13 08:35:20 +02:00
Code Activity

Emergeblocks: Fix occasional crash

Browse Source 
Modification of the emergeblocks internal state was not protected
by a lock, causing a race condition.
This can be reproduced by repeatedly running emergeblocks for an
already-generated section of the map (with multiple emerge threads).
This commit is contained in:
Rogier
2016-07-25 18:39:29 +02:00
committed by paramat
parent adad6e0a1c
commit 4b17105dc4
2 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/script/lua_api/l_env.cpp
View File

@@ -137,6 +137,10 @@ void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
assert(state->script != NULL);
assert(state->refcount > 0);
// state must be protected by envlock
Server *server = state->script->getServer();
MutexAutoLock envlock(server->m_env_mutex);
state->refcount--;
state->script->on_emerge_area_completion(blockpos, action, state);