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周舟莫UI设计

如何查看一个动态链接库中的依赖的其他动态链接库是绝对地址引用还是名字引用？

╰─➤ ldd libx264-2881b7ff.so.164 linux-vdso.so.1 (0x00007fff1bec0000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9f37919000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f9f37d5c000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f9f37d57000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9f37600000) /lib64/ld-linux-x86-64.so.2 (0x00007f9f37d77000) 比如上面的输出，哪些是「绝对」，哪些是「相对」呢？我觉得 "/lib64/ld-linux-x86-64.so.2 (0x00007f9f37d77000)" 是绝对 "linux-vdso.so.1 (0x00007fff1bec0000)" 是相对但是类似 "libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f9f37d5c000)" 这样的算绝对还是相对引用呢？这里的 "=>" 表示什么含义呢？ *** 我有一个问题，就是「如果没有 / ，那么就按找一个特定的方式在在磁盘上寻找这个文件。这个时候，ldd 会用 => 显示寻找的结果。」，我安装了一个 pyav，通过 "pip install av" 安装，然后我查看 av 的一个动态链接库 "ldd _core.cpython-310-x86_64-linux-gnu.so" ，发现这个动态链接库里面的 => 都是指向 "/home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs" 里面的某个文件，我不清楚这个「特定的方式」是什么？ (svddb_sdk) ╭─pon@admini ~/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av ╰─➤ ldd _core.cpython-310-x86_64-linux-gnu.so linux-vdso.so.1 (0x00007ffc8db53000) libavformat-20d4e1d0.so.59.27.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavformat-20d4e1d0.so.59.27.100 (0x00007fd001254000) libavcodec-8a88085f.so.59.37.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavcodec-8a88085f.so.59.37.100 (0x00007fcffff37000) libavdevice-ed40abdd.so.59.7.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavdevice-ed40abdd.so.59.7.100 (0x00007fcffff18000) libavutil-1701948d.so.57.28.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavutil-1701948d.so.57.28.100 (0x00007fcfffd3a000) libavfilter-2d5314ec.so.8.44.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavfilter-2d5314ec.so.8.44.100 (0x00007fcfff8e9000) libswscale-a6aee226.so.6.7.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libswscale-a6aee226.so.6.7.100 (0x00007fcfff846000) libswresample-b868a3ce.so.4.7.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libswresample-b868a3ce.so.4.7.100 (0x00007fcfff824000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fcfff7f5000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fcfff603000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fcfff4b4000) libxml2-47a785fa.so.2.9.13 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxml2-47a785fa.so.2.9.13 (0x00007fcfff328000) libbluray-69850b93.so.2.1.2 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libbluray-69850b93.so.2.1.2 (0x00007fcfff2d3000) libgmp-dbb9f291.so.10.4.1 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libgmp-dbb9f291.so.10.4.1 (0x00007fcfff25a000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fcfff23e000) libgnutls-58994bd7.so.30.31.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libgnutls-58994bd7.so.30.31.0 (0x00007fcfff005000) libvpx-c1705a7a.so.7.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libvpx-c1705a7a.so.7.0.0 (0x00007fcffedf0000) liblzma-f3a5963b.so.5.2.5 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/liblzma-f3a5963b.so.5.2.5 (0x00007fcffedc5000) libdav1d-df61568f.so.5.1.1 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libdav1d-df61568f.so.5.1.1 (0x00007fcffebff000) libopencore-amrwb-9db94aa9.so.0.0.3 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libopencore-amrwb-9db94aa9.so.0.0.3 (0x00007fcffebe9000) libaom-e9efed4a.so.3.2.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libaom-e9efed4a.so.3.2.0 (0x00007fcffe4a9000) libmp3lame-3ecc6556.so.0.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libmp3lame-3ecc6556.so.0.0.0 (0x00007fcffe415000) libopencore-amrnb-393dbae2.so.0.0.3 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libopencore-amrnb-393dbae2.so.0.0.3 (0x00007fcffe3e7000) libopenjp2-0d101c52.so.2.4.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libopenjp2-0d101c52.so.2.4.0 (0x00007fcffe363000) libopus-70bda348.so.0.8.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libopus-70bda348.so.0.8.0 (0x00007fcffe307000) libspeex-b6a53f7a.so.1.5.1 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libspeex-b6a53f7a.so.1.5.1 (0x00007fcffe2eb000) libtheoraenc-276df146.so.1.1.2 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libtheoraenc-276df146.so.1.1.2 (0x00007fcffe2a9000) libtheoradec-f01ee89e.so.1.1.4 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libtheoradec-f01ee89e.so.1.1.4 (0x00007fcffe287000) libtwolame-72d74ef7.so.0.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libtwolame-72d74ef7.so.0.0.0 (0x00007fcffe25e000) libvorbis-f4a9a6fd.so.0.4.9 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libvorbis-f4a9a6fd.so.0.4.9 (0x00007fcffe221000) libvorbisenc-0d9d5bdf.so.2.0.12 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libvorbisenc-0d9d5bdf.so.2.0.12 (0x00007fcffe170000) libx264-2881b7ff.so.164 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libx264-2881b7ff.so.164 (0x00007fcffde4d000) libx265-d8690e8d.so.199 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libx265-d8690e8d.so.199 (0x00007fcffcbc1000) libxvidcore-d29bca61.so.4.3 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxvidcore-d29bca61.so.4.3 (0x00007fcffcab3000) libxcb-65da195c.so.1.1.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxcb-65da195c.so.1.1.0 (0x00007fcffc880000) libxcb-shm-7a199f70.so.0.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxcb-shm-7a199f70.so.0.0.0 (0x00007fcffc679000) libxcb-shape-25c2b258.so.0.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxcb-shape-25c2b258.so.0.0.0 (0x00007fcffc472000) libxcb-xfixes-9be3ba6f.so.0.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libxcb-xfixes-9be3ba6f.so.0.0.0 (0x00007fcffc262000) libpostproc-9d3ac700.so.56.6.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libpostproc-9d3ac700.so.56.6.100 (0x00007fcffc240000) libass-8499ab98.so.9.1.3 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libass-8499ab98.so.9.1.3 (0x00007fcffc1fe000) libfontconfig-99ba2620.so.1.12.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libfontconfig-99ba2620.so.1.12.0 (0x00007fcffc1aa000) libfreetype-19bd6cfb.so.6.17.1 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libfreetype-19bd6cfb.so.6.17.1 (0x00007fcffc0f9000) /lib64/ld-linux-x86-64.so.2 (0x00007fd0014fe000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fcffc0f1000) libunistring-aeeab030.so.2.1.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libunistring-aeeab030.so.2.1.0 (0x00007fcffbf6a000) libnettle-cb75a9d6.so.8.4 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libnettle-cb75a9d6.so.8.4 (0x00007fcffbf1f000) libhogweed-5d799758.so.6.4 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libhogweed-5d799758.so.6.4 (0x00007fcffbece000) libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fcffbcec000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fcffbccf000) libogg-bbd52b06.so.0.8.5 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libogg-bbd52b06.so.0.8.5 (0x00007fcffbcc3000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fcffbcb9000) libXau-00ec42fe.so.6.0.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libXau-00ec42fe.so.6.0.0 (0x00007fcffbab4000) libfribidi-baef595b.so.0.4.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libfribidi-baef595b.so.0.4.0 (0x00007fcffba91000) libharfbuzz-d40f381a.so.0.40100.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libharfbuzz-d40f381a.so.0.40100.0 (0x00007fcffb97d000) libuuid-f64cda11.so.1.3.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libuuid-f64cda11.so.1.3.0 (0x00007fcffb777000) libpng16-1f529098.so.16.37.0 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libpng16-1f529098.so.16.37.0 (0x00007fcffb746000) 比如其中的 "libavformat-20d4e1d0.so.59.27.100 => /home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavformat-20d4e1d0.so.59.27.100 (0x00007fd001254000)" 这个是按照什么规定让 "libavformat-20d4e1d0.so.59.27.100" 指向 "/home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/libavformat-20d4e1d0.so.59.27.100 (0x00007fd001254000)" 的呢？按理来说，"/home/pon/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av/./../av.libs/" 不应该存在于系统的默认搜索路径中吧？而且我也没有添加类似 LD_LIBRARY_PATH、LD_PRELOAD、LD_LIBRARYN、LD_DEBUG、LD_BIND_NOW 的环境变量 (svddb_sdk) ╭─pon@admini ~/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av ╰─➤ printenv | grep LD_ 1 ↵ (svddb_sdk) ╭─pon@admini ~/.local/share/virtualenvs/svddb_sdk-qAt4tE2E/lib/python3.10/site-packages/av *** 如果使用 readelf 查看，就是下面这样 ─➤ readelf -d _core.cpython-310-x86_64-linux-gnu.so 1 ↵ Dynamic section at offset 0x2d000 contains 33 entries: Tag Type Name/Value 0x000000000000000f (RPATH) Library rpath: [$ORIGIN/../av.libs] 0x0000000000000001 (NEEDED) Shared library: [libavformat-20d4e1d0.so.59.27.100] 0x0000000000000001 (NEEDED) Shared library: [libavcodec-8a88085f.so.59.37.100] 0x0000000000000001 (NEEDED) Shared library: [libavdevice-ed40abdd.so.59.7.100] 0x0000000000000001 (NEEDED) Shared library: [libavutil-1701948d.so.57.28.100] 0x0000000000000001 (NEEDED) Shared library: [libavfilter-2d5314ec.so.8.44.100] 0x0000000000000001 (NEEDED) Shared library: [libswscale-a6aee226.so.6.7.100] 0x0000000000000001 (NEEDED) Shared library: [libswresample-b868a3ce.so.4.7.100] 0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0] 0x0000000000000001 (NEEDED) Shared library: [libc.so.6] 0x000000000000000c (INIT) 0x3000 0x000000000000000d (FINI) 0x63c4 0x0000000000000019 (INIT_ARRAY) 0x8cd8 0x000000000000001b (INIT_ARRAYSZ) 8 (bytes) 0x000000000000001a (FINI_ARRAY) 0x8ce0 0x000000000000001c (FINI_ARRAYSZ) 8 (bytes) 0x000000006ffffef5 (GNU_HASH) 0xb358 0x0000000000000005 (STRTAB) 0x12250 0x0000000000000006 (SYMTAB) 0xa8d8 0x000000000000000a (STRSZ) 2479 (bytes) 0x000000000000000b (SYMENT) 24 (bytes) 0x0000000000000003 (PLTGOT) 0x9000 0x0000000000000002 (PLTRELSZ) 2016 (bytes) 0x0000000000000014 (PLTREL) RELA 0x0000000000000017 (JMPREL) 0x1e40 0x0000000000000007 (RELA) 0x17b0 0x0000000000000008 (RELASZ) 1680 (bytes) 0x0000000000000009 (RELAENT) 24 (bytes) 0x000000006ffffffe (VERNEED) 0x16b0 0x000000006fffffff (VERNEEDNUM) 8 0x000000006ffffff0 (VERSYM) 0x15ce 0x000000006ffffff9 (RELACOUNT) 44 0x0000000000000000 (NULL) 0x0

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silennn

请教一下c语言数组问题？是什么问题导致程序一会能行一会不行？

需求：实现将数组中所有元素调整为左右两部分，左边为奇数，右边为偶数。（c语言） int main(){ int size; printf("enter the size of arr:"); scanf("%d",&size); int arr[size]; for(int i;i

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代码剑客行

极坐标下二重积分问题?

"image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241222/ef0cdfa83c511a592582e49b76aecfef.png) "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241222/e7a57d8f9ba8d3cc427881e06589f88c.png) 一道很简单的二重积分问题，请问大佬，不按对称性的解法，按常规解法怎么算出结果的？我算的总是不对... 还有对称性的解法, 为什么关于y = 0对称就能推出上图的表达式。没找到对称性关于这点的知识点。 "45a554ef38e56a64d4e534dff2566cb.jpg" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241222/6895db72b2458e7b6fb6b37870ebb550.png)

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七安前

顺序存储，线性表的删除和插入中出现问题，未知代码哪里出错？

需求：编制C/C++程序，利用顺序存储方式实现下列功能：从键盘输入数据建立一个线性表（整数），并输出该线性表；然后根据屏幕提示，进行数据的插入或删除等操作，并在插入或删除数据后输出线性表。代码出现问题，无法运行，错误提醒是delete那块红了，估计是它出问题。未知是什么原因，望指教。 typedef struct { int data[MAX_SIZE]; int length; } SeqList; void init(SeqList *list) { list->length = 0; } void insert(SeqList *list, int position, int value) { if (position list->length || list->length == MAX_SIZE) { printf("The insert position is invalid or the linear table is full:\n"); return; } for (int i = list->length - 1; i >= position; i--) { list->data[i + 1] = list->data[i]; } list->data[position] = value; list->length++; } void delete(SeqList *list, int position) { if (position = list->length) { printf("Invalid delete location:\n"); return; } for (int i = position; i length - 1; i++) { list->data[i] = list->data[i + 1]; } list->length--; } void print(SeqList *list) { printf("Linear table contents:"); for (int i = 0; i length; i++) { printf("%d ", list->data[i]); } printf("\n"); } int main() { SeqList list; init(&list); printf("Please enter the length of the linear table:"); scanf("%d", &list.length); if (list.length > MAX_SIZE) { printf("The linear table length exceeds the maximum value:\n"); return 0; } printf("Enter the elements of the linear table:"); for (int i = 0; i < list.length; i++) { scanf("%d", &list.data[i]); } print(&list); int operation, position, value; printf("\nplese select:\n"); printf("1. insect the data:\n"); printf("2. delete the data\n"); printf("0. exit\n"); while (1) { printf("\nplease enter the ops:"); scanf("%d", &operation); if (operation == 1) { printf("Please enter insert position and insert value (separated by space)："); scanf("%d %d", &position, &value); insert(&list, position, value); } else if (operation == 2) { printf("Please enter the deletion location:"); scanf("%d", &position); delete(&list, position); } else if (operation == 0) { break; } else { printf("Invalid operation number:\n"); } print(&list); } return 0; } 顺便提问一句我的DEVC++底下变成这样，应该怎么恢复到初始可以看见报错原因的状态？ "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241228/8f98052c1059aa39d58623656470276e.png) 菜鸟上路，万分感谢指教。

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ciiiiinema

曲线积分问题?

"image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241222/f3d97b85ea1b942c8a245558afcad7d7.png) "image.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241222/fe398c544a5483e5fe0324da6f1c1a7b.png) 求教大佬，第三步是怎么化出来的啊？我用极坐标代入也没算出这个结果啊。。

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