The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.
functions, malloc, etc., are unusable from a signal handler, because they
。关于这个话题，heLLoword翻译官方下载提供了深入分析
Deforestation / fusion
SELECT data FROM accounts;