多线程的坑

最新推荐文章于 2024-06-28 09:30:08 发布

原创最新推荐文章于 2024-06-28 09:30:08 发布 · 2k 阅读

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本文记录了在ROS环境下运行yuyilocation模块时遇到的多种错误，包括段错误、freeglut错误及xcb相关错误。文章指出在引入多线程（使用pthread_create）后，主函数需紧跟循环语句如while(1)，以避免出现异常。并提供了多线程编程技巧及调试建议。

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robot@robot:~/ck_test1_wjw $ rosrun yuyi location
Segmentation fault (core dumped)
robot@robot:~/ck_test1_wjw $ rosrun yuyi location
freeglut  ERROR:  Internal error <FBConfig with necessary capabilities not found> in function fgOpenWindow
robot@robot:~/ck_test1_wjw $ rosrun yuyi location
[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
location: ../../src/xcb_io.c:179: dequeue_pending_request: Assertion `!xcb_xlib_unknown_req_in_deq' failed.
Aborted (core dumped)
robot@robot:~/ck_test1_wjw $ rosrun yuyi location
[xcb] Extra reply data still left in queue
[xcb] This is most likely caused by a broken X extension library
[xcb] Aborting, sorry about that.
location: ../../src/xcb_io.c:576: _XReply: Assertion `!xcb_xlib_extra_reply_data_left' failed.
Aborted (core dumped)
robot@robot:~/ck_test1_wjw $ rosrun yuyi location
[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
location: ../../src/xcb_io.c:179: dequeue_pending_request: Assertion `!xcb_xlib_unknown_req_in_deq' failed.
Aborted (core dumped)
robot@robot:~/ck_test1_wjw $ rosrun yuyi location
^[[ASegmentation fault (core dumped)

加入多线程之后，也就是pthread_create，主函数的后面一定要跟一些循环语句。。。while(1)什么的。否则会出错。

https://blog.youkuaiyun.com/weixin_41931548/article/details/80802340多线程的讲解，加MFC的，挺不错