voidtest_time(){structtimespec cur_time; unsignedlongt0,t1; clock_gettime(CLOCK_MONOTONIC,&cur_time); t0=MAKE_NS(cur_time.tv_sec,cur_time.tv_nsec); usleep(1000*500); clock_gettime(CLOCK_MONOTONIC,&cur_time); t1=MAKE_NS(cur_time.tv_sec,cur_time.tv_nsec); printf("interval = %ld ...
如果无法编译,默认没有加入该库,请用gcc test9.c -lrt运行 在引入的librt.so 的路径:{/usr/lib/x86_64-linux-gnu} 测试#time ./a.out http://www.cnblogs.com/daqiwancheng/archive/2010/07/01/1769522.html Linux下使用clock_gettime给程序计时 哦,clock_gettime( ) 提供了纳秒的精确度,给程序计时可...
如果无法编译,默认没有加入该库,请用gcc test9.c -lrt运行 在引入的librt.so 的路径:{/usr/lib/x86_64-linux-gnu} 测试#time ./a.out Linux下使用clock_gettime给程序计时 哦,clock_gettime( ) 提供了纳秒的精确度,给程序计时可是不错哦; 函数的原型如下: int clock_gettime(clockid_t clk_id...
Sep 27 16:52:07 localhost.localdomain chronyd[1287]: hz=100 shift_hz=7 freq_scale=1.00000000 nominal_tick=10000 slew_delta_tick=833 max_tick_bias=1000 shift_pll=2 Sep 27 16:52:07 localhost.localdomain chronyd[1287]: Frequency -1.497 +/- 1.312 ppm read from /var/lib/chrony/drift Sep...
#include <time.h> int clock_gettime( clockid_tclock_id, struct timespec *tp); Arguments: clock_id The ID of the clock whose time you want to get; one of the following: CLOCK_REALTIME— the standard POSIX-defined clock. Timers based on this clock wake up the processor if it's in ...
使用clock_gettime获取系统单调增长时间代替系统时间来实现超时机制,避免时间同步或修改系统时间时导致错误的超时。 TangCheng/libipcam_basePublic NotificationsYou must be signed in to change notification settings Fork11 Star6 Code Issues Pull requests
解决方案: 只需在我们运行Makefile文件里面添加 -lrt ,重新编译即可。 例如:LINK_LIBS += -Luintlib/x86/ -lrt lib.a 附上:Linux常用的库 libz 压缩库(Z) librt 实时库(real time) libm 数学库(math) libc 标准C库(C lib)
Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2017-09-27 16:52:07 CST; 3h 9min ago Main PID: 1287 (chronyd) CGroup: /system.slice/chronyd.service
_gettime in libevent.a(event.o) ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) 解决方法: 在工程的main.m 的main方法前加 #ifdefined(__MACH__) && !defined(CLOCK_REALTIME)#include<sys/time.h>#defineCL...
/data1/mooon/run/lib/libsys.a(lock.o): In function `sys::CLock::timed_lock(unsigned int)': /data1/mooon/src/common_library/src/sys/./lock.cpp:101: undefined reference to `clock_gettime' /data1/mooon/run/lib/libsys.a(event.o): In function `sys::CEvent::timed_wait(sys::CLock&...