我有一份来自瓦兰的产出:
==4836== 10,232 bytes in 1 blocks are still reachable in loss record 1 of 1
==4836== at 0x4C2779D: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==4836== by 0x401865: thrt() (main.cpp:221)
==4836== by 0x4048B1: main (tester.cpp:35)
==4836==是什么意思?
0x4C2779D
在linux上,man2open,我得到了关于以下标志的解释:
S_IRWXU
00700 user (file owner) has read, write and execute permission
S_IRUSR
00400 user has read permission
S_IWUSR
00200 user has write permission
S_IXUSR
00100 user has execute permission
S_IRWXG
我想知道什么是C语言标准是我目前安装gcc默认遵循。我运行了info gcc,它给了-std=standard。
-std=standard是什么意思?
我在期待像-std=gnu11这样的东西
操作系统: linux 19.1 gcc版本: 7.4.0,gcc预装了操作系统
我查看了在线手册:
但我没有发现任何默认的标准叫做“标准”。相反,我发现它应该是"gnu11“
gcc回应:
...
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TID在iotop中是什么意思?
Total DISK READ: 0.00 B/s | Total DISK WRITE: 3.90 M/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
2150 be/4 root 0.00 B/s 0.00 B/s 0.00 % 65.25 % [flush-202:0]
6694 be/4 www-data 0.00 B/s 19.64 K/s 0.00 % 0.00 % php-fpm: pool www
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