shensunbo Blog

「离开世界之前一切都是过程」

gcov todo

// GCOVR_EXCL_LINE //GCOVR_EXCL_START //GCOVR_EXCL_STOP

Posted by shensunbo on May 15, 2025

english corner organized by me record

20250411 travel experiences 20250418 the book you want to recommend 20250425 good and bad feelings this week

Posted by shensunbo on April 23, 2025

delay Record

使用ffmpeg实现的一个预录制，用于保存开始录制之前的一段时间的视频 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 5...

Posted by shensunbo on March 18, 2025

json.hpp

常用操作读取数组 1 2 3 4 "ceer_color": [1.0, 1.0, 0.0, 0.3], std::vector<int> color = block.at("color").get<std::vector<int>>(); tmp_block.color = glm::vec3(color.at(0), color.at(1), co...

Posted by shensunbo on January 20, 2025

memcpy优化失败

尝试了多种方式，仍然无法明显优化memcpy的拷贝速度，memcpy应该是已经高度优化过的了 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 ...

Posted by shensunbo on October 31, 2024

修改gerrit的review意见

直接在网页上修改使用git修改 git fetch origin [git checkout <change-id>] git add . git commit --amend git push origin HEAD:refs/for/branch

Posted by shensunbo on October 21, 2024

LINUX 调试栈

info proc mappings 打印内存映射信息 ``` (gdb) info proc mappings process 104188 Mapped address spaces: 1 2 3 4 5 Start Addr End Addr Size Offset objfile 0x400000 ...

Posted by shensunbo on October 18, 2024

使用 Unix Domain Sockets 在不同进程间传递文件句柄

introduce Note: 句柄通过 msg_control 消息来发送，但是 msg_iov 仍然需要正确填充，不然会报错，可以随便填充一个字符发送一个描述符会使描述符的引用计数加1，意味着即使在接收进程调用recvmsg之前，发送进程关闭了该描述符，对于接收进程他任然保持打开状态在接收进程中会创建一个新的描述符，所以发送进程和接收进程的描述符是不相等的...

Posted by shensunbo on October 9, 2024

bgfx

Posted by shensunbo on September 29, 2024

blender脚本，

选中大于10000个三角形的对象 1 2 3 4 5 6 7 8 9 10 11 import bpy bpy.ops.object.select_all(action='DESELECT') for obj in bpy.data.objects: if obj.type == 'MESH': tri_count = len(obj.data.polygons)...

Posted by shensunbo on September 25, 2024