__weak_reference(__usleep, _usleep); Key function nanosleep,它能提供纳秒级的延时精度,该用户空间函数对应的内核实现是sys_nanosleep,它的工作交由高精度定时器系统的hrtimer_nanosleep函数实现,最终的大部分工作则由do_nanosleep完成。hrtimer_nanosleep函数首先在堆栈中创建一个高精度定时器,设置它的到期时间,...
I am working with ARM DS-5 builder.I want to use Usleep function but it always display error like: "undefined reference to `usleep'" - I have already included unistd.h and when I click on usleep then it opens unistd.h. - I have also added...
gcc.exe -c ujprog.c -o ujprog.o -I. [... snip ...] c:\mingw\include\unistd.h:100:29: note: declared here int __cdecl __MINGW_NOTHROW usleep( useconds_t )__MINGW_ATTRIB_DEPRECATED; ^~~~ ujprog.c: In function 'shutdown_usb': ujprog.c:621:2: warning: 'usleep' is depre...
1. What is the primary function of the usleep command? A. To suspend execution for a specified time B. To display system uptime C. To create a new user D. To list files in a directory Show Answer 2. What is the maximum duration that can be specified with usleep? A. 1 ...