例如 nice(2)-Linux man page Name nice-change process priority Synopsis #include <unistd.h> int nice(int inc); Description 仅作用于调用者进程 nice()adds inc to the nice value for the calling process.(A higher nice value means a low priority.)Only the superuser may specify a negative increment,or priority increase. The range for nice values is described in getpriority(2). Return Value On success,the new nice value is returned (but see NOTES below).On error,-1 is 室 2023/7/1 returned,and errno is set appropriately.2023/7/14 Linux操作系统分析 9/52 例如 仅作用于调用者进程